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<div class="ant-row ThreeColumnLayout_wrapper__gPK_l"> <div class="ant-col ThreeColumnLayout_leftColumn__yqNgV"> <div> <div> <div id="article-table-of-contents" data-ismobile="false"> <div class="TableOfContents_tableOfContents__0jAuv"> <div class="TableOfContents_tableOfContents__title__CH9Lz"> 在这一页上</d我v> <a class="TableOfContents_tableOfContents__item__JJil1" href="#abstract">文摘</gydF4y2Baa> <a class="TableOfContents_tableOfContents__item__JJil1" href="#introduction">介绍</gydF4y2Baa> <a class="TableOfContents_tableOfContents__item__JJil1" href="#system-model">系统模型</gydF4y2Baa> <a class="TableOfContents_tableOfContents__item__JJil1" href="#conclusions">结论</gydF4y2Baa> <a class="TableOfContents_tableOfContents__item__JJil1" href="#acknowledgments">确认</gydF4y2Baa> <a class="TableOfContents_tableOfContents__item__JJil1" href="#references">引用</gydF4y2Baa> <a class="TableOfContents_tableOfContents__item__JJil1" href="#copyright">版权</gydF4y2Baa> <a class="TableOfContents_tableOfContents__item__JJil1" href="#related-articles">相关文章</gydF4y2Baa> </div> </div> </div> </div> </div> <div class="ant-col ThreeColumnLayout_middleColumn__sbd41"> <div class="ArticleMiddleSection_articleMiddleSection__gAv9z"> <div class="articleHeader"> <div class="articleHeader__specialIssue"> <span class="articleHeader__specialIssue_tag">特殊的问题</gydF4y2Baspan> <h2 class="articleHeader__specialIssue_title">天线设计和系统技术的进步为下一代蜂窝系统</h2><gydF4y2Baa href="//www.newsama.com/journals/ijap/si/150639/" class="articleHeader__specialIssue_url" target="_blank" rel="noreferrer">把这个特殊的问题</gydF4y2Baa> </div> <strong>研究文章|<gydF4y2Ba!-- -->开放获取</gydF4y2Bastrong> <div class="articleHeader__meta"> <span>体积<gydF4y2Ba!-- -->2012年<gydF4y2Ba!-- -->|</gydF4y2Baspan> <span>文章的ID<gydF4y2Ba!-- -->910824年<gydF4y2Ba!-- -->|</gydF4y2Baspan> <span class="articleHeader__meta_doiLink"><a href="https://doi.org/10.1155/2012/910824" aria-label="Doi-link" target="_blank" rel="noreferrer">https://doi.org/10.1155/2012/910824</gydF4y2Baa></span> </div> <div class="simpleShowMore"> <button class="simpleShowMore__button">显示引用</gydF4y2Babutton> </div> <h1 class="articleHeader__title">部分PIC-MRC接收机设计单载波块传输系统在多径衰落信道</h1><d我v class="articleHeader__authors"> <span class="articleHeader__authors_author"><strong>Juinn-Horng邓</gydF4y2Bastrong><a href="//www.newsama.com/cdn-cgi/l/email-protection" aria-label="Mail Option"><span role="img" class="anticon"> <svg version="1.0" xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" viewbox="0 0 1401 1101"> <path fill="#6ba439" d="M132.5 2.1C101.4 6 71.1 20.5 48.3 42.4c-22.7 21.7-37.5 48.3-44.6 80l-2.2 10.1v837l2.2 10.1c6.7 30 19.3 53.9 39.8 75.3 23.3 24.3 56.4 40.9 90 45 12.8 1.6 1122.2 1.6 1135 0 38.9-4.8 75.9-25.6 100-56.4 15-19.3 24.2-39 29.8-63.9l2.2-10.1v-837l-2.2-10.1c-7.1-31.8-21.9-58.3-44.6-80.1-20.2-19.2-43.9-31.7-73.6-38.5l-9.6-2.3L705 1.4c-321.9-.1-568.5.2-572.5.7zm1123.4 99.5c1.7.4 3.1 1 3.1 1.4 0 .5-125.6 87.7-279 194L700.9 490.2 422 297C268.5 190.7 143 103.4 143 103c0-.5 1-1.1 2.3-1.3 3.5-.7 1107.1-.8 1110.6-.1zM401 404c164.4 113.8 299.4 207 300 207 .6 0 135.6-93.2 300.1-207 164.5-113.9 299.3-207 299.5-207 .2 0 .4 170.9.4 379.7 0 417.9.5 386-6.1 398.3-6.2 11.6-19 21.4-31.9 24.4-5.8 1.4-67.4 1.6-562 1.6s-556.2-.2-562-1.6c-12.9-3-25.7-12.8-31.9-24.4-6.6-12.3-6.1 19.6-6.1-398.3 0-208.8.2-379.7.5-379.7S236.6 290.1 401 404z"></path> </svg></span></a><sup>1</gydF4y2Basup></span> <span class="articleHeader__authors_author">和<gydF4y2Ba!-- -->胜洋黄<gydF4y2Basup>1</gydF4y2Basup></span> </div> <div class="simpleShowMore"> <button class="simpleShowMore__button">显示更多</gydF4y2Babutton> </div> <div class="articleHeader__academicEditor"> <strong>学术编辑器:</gydF4y2Bastrong> <span>Chih-Peng李</gydF4y2Baspan> </div> <div class="articleHeader__timeline"> <div class="articleHeader__timeline_item "> <strong>收到了</gydF4y2Bastrong> <span>2012年5月20</gydF4y2Baspan> </div> <div class="articleHeader__timeline_item "> <strong>修改后的</gydF4y2Bastrong> <span>2012年7月25日</gydF4y2Baspan> </div> <div class="articleHeader__timeline_item "> <strong>接受</gydF4y2Bastrong> <span>2012年7月26日</gydF4y2Baspan> </div> <div class="articleHeader__timeline_item articleHeader__timeline_item_sticky"> <strong>发表</gydF4y2Bastrong> <span>2012年9月08</gydF4y2Baspan> </div> </div> </div> <div class="articleBody"> <div class="xml-content"> <h4 class="header" id="abstract">文摘</h4><p>gydF4y2Ba单载波块传输系统(SCBT)已成为最受欢迎的调制系统由于其低peak-to-average功率比(地表铺面),它逐渐被认为是用于上行无线通信系统。在这篇文章中,一个低复杂性部分并行干扰消除(PIC)和最大比合并(MRC)技术,提出了用于接收机对抗码间干扰(ISI)问题在多径衰落信道。MRC的援助计划,该部分图片技术可以有效地执行干扰消除和获得时间分集增益的好处。最后,该系统可以扩展到使用多个天线系统提供出色的性能。仿真结果表明,该低复杂性部分PIC-MRC单系统可以提供强劲的性能和超越传统的图片和迭代频域判决反馈均衡器(FD-DFE)系统在多径衰落信道环境。</p><gydF4y2Baspan class="end-abs"></span> <h4 id="introduction">1。介绍</h4><p>gydF4y2Ba在过去的十年中,正交频分复用(OFDM)系统已经成为最流行的无线通信系统。这种技术现在被视为一个强大的候选人未来的蜂窝移动网络,但它涉及的问题高peak-to-average功率比(地表铺面),它会导致功率放大器工作在非线性区。因此,它需要后退输出功率降低功率放大器的效率。单载波块传输(SCBT)系统,是近年来流行的一个主题(<gydF4y2Baa href="#B1">1</gydF4y2Baa>- - - - - -<gydF4y2Baa href="#B2">6</gydF4y2Baa>]。它可以提供较低的地表铺面的性能,所以我们试图研究干扰消除技术提供优秀的比特误码率(BER)性能,减少接收机的计算复杂性。</p><p>gydF4y2Ba参考文献(<gydF4y2Baa href="#B6">2</gydF4y2Baa>,<gydF4y2Baa href="#B5">3</gydF4y2Baa>)与迭代频域判决反馈均衡器(FD-DFE)提出了SCBT系统。有人指出FD-DFE的决定和迭代计划在频域处理。更多的迭代之后,系统的性能明显提高。此外,这些系统的误码性能显然只有当执行迭代数量是足够高的。然而,大量的迭代接收机将诱导高复杂性。并行干扰消除(PIC)计划(<gydF4y2Baa href="#B7">7</gydF4y2Baa>- - - - - -<gydF4y2Baa href="#B10">10</gydF4y2Baa>)能有效克服码间干扰(ISI)的问题,提高误码性能明显。然而,误码性能比FD-DFE (<gydF4y2Baa href="#B5">3</gydF4y2Baa>甚至]使用更多的迭代循环。</p><p>gydF4y2Ba因此,为了缓解上述问题,部分图片最大比率梳理(MRC)技术提出了本文。也就是说,MRC的援助计划(<gydF4y2Baa href="#B11">11</gydF4y2Baa>),该部分图片技术可以有效地执行干扰消除和获得时间分集增益的好处。事实上,更多的阀门进行加权组合,这将导致更高的时间分集增益。此外,它表明该技术可以实现更好的误码率由于分集增益。这主要是由于该方案的能力来有效地处理干扰的影响,实现固有的时间和MRC多样性。而且还可以扩展到多个天线系统和获得更多的性能。此外,天线选择技术(AST) (<gydF4y2Baa href="#B12">12</gydF4y2Baa>- - - - - -<gydF4y2Baa href="#B15">15</gydF4y2Baa>]是用来降低成本和权力联系在一起(极点)单输入多输出系统。仿真结果表明,该低复杂性部分PIC-MRC系统可以提供降低接收机复杂度和强劲的性能比传统的图片和迭代FD-DFE系统在多径衰落信道环境。</p><p>gydF4y2Ba本文的其余部分组织如下:部分<gydF4y2Baa href="#sec2">2</gydF4y2Baa>介绍了系统模型和FD-DFE SCBT系统。节<gydF4y2Baa href="#sec3">3</gydF4y2Baa>PIC算法用于取消屏蔽干扰,和迭代局部PIC-MRC方案提出了进一步提高系统性能。节<gydF4y2Baa href="#sec4">4</gydF4y2Baa>,该系统扩展到多个天线系统。提出系统的性能测试的结果然后给出部分<gydF4y2Baa href="#sec5">5</gydF4y2Baa>,部分<gydF4y2Baa href="#sec6">6</gydF4y2Baa>总结了研究。</p><h4gydF4y2Baid="system-model">2。系统模型</h4><h5gydF4y2Baid="sec2.1">2.1。频域均衡系统</h5><p>gydF4y2Ba图<gydF4y2Baa href="//www.newsama.com/journals/ijap/2012/910824/fig1/" target="_blank">1</gydF4y2Baa>显示了SCBT系统的基本配置。首先,<gydF4y2Basvg height="7.1374998" id="M1" style="vertical-align:-0.10033pt;width:7.8874998px;" version="1.1" viewbox="0 0 7.8874998 7.1374998" width="7.8874998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,7.1375)"> <g transform="translate(72,-66.29)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>信息信号块大小<gydF4y2Basvg height="11.075" id="M2" style="vertical-align:-0.3135pt;width:38.1875px;" version="1.1" viewbox="0 0 38.1875 11.075" width="38.1875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.075)"> <g transform="translate(72,-63.14)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="13.415719" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="24.193304" y="0"> 1</tgydF4y2Baspan> </text> </g> </g> </svg>可以被定义为<gydF4y2Basvg height="17.7875" id="M3" style="vertical-align:-3.25793pt;width:178.10001px;" version="1.1" viewbox="0 0 178.10001 17.7875" width="178.10001" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,17.7875)"> <g transform="translate(72,-57.77)"> <text transform="matrix(1,0,0,-1,-71.95,61.07)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="6.2515001" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="10.414999" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="16.62899" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="24.255819" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="36.296207" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="40.459709" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-24.61,57.94)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-19.73,61.07)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="10.37749" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="14.540989" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="19.742237" y="0"> …</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="34.333237" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="39.534485" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,26.69,57.94)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="7.4479518" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="13.443072" y="0"> 1</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,45.01,61.07)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="10.37749" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="14.540989" y="0"> ]</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,63.71,66.24)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>的上标<gydF4y2Basvg height="16.5" id="M4" style="vertical-align:-2.21957pt;width:23.387501px;" version="1.1" viewbox="0 0 23.387501 16.5" width="23.387501" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,16.5)"> <g transform="translate(72,-58.8)"> <text transform="matrix(1,0,0,-1,-71.95,61.07)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> ⋅</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="7.739357" y="0"> )</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-60.05,66.24)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>代表转置。信号传输块大小<gydF4y2Basvg height="13.45" id="M5" style="vertical-align:-2.21957pt;width:78.162498px;" version="1.1" viewbox="0 0 78.162498 13.45" width="78.162498" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.45)"> <g transform="translate(72,-61.24)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="17.579218" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="28.919439" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="38.446724" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="45.385891" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="56.163475" y="0"> 1</tgydF4y2Baspan> </text> </g> </g> </svg>生成的<gydF4y2Basvg height="13.45" id="M6" style="vertical-align:-2.21957pt;width:26.112499px;" version="1.1" viewbox="0 0 26.112499 13.45" width="26.112499" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.45)"> <g transform="translate(72,-61.24)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="6.2515001" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="10.414999" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="16.62899" y="0"> )</tgydF4y2Baspan> </text> </g> </g> </svg>通过添加循环前缀(CP)<gydF4y2Basvg height="10.325" id="M7" style="vertical-align:-0.0pt;width:13.2875px;" version="1.1" viewbox="0 0 13.2875 10.325" width="13.2875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.325)"> <g transform="translate(72,-63.74)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>符号长度的间隔(GI)。<gydF4y2Basvg height="16.612499" id="M8" style="vertical-align:-5.03984pt;width:19.674999px;" version="1.1" viewbox="0 0 19.674999 16.612499" width="19.674999" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,16.6125)"> <g transform="translate(72,-58.71)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-65.07,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> c</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="3.8858881" y="0"> p</tgydF4y2Baspan> </text> </g> </g> </svg>捐赠的CP插入矩阵大小<gydF4y2Basvg height="13.45" id="M9" style="vertical-align:-2.21957pt;width:85.050003px;" version="1.1" viewbox="0 0 85.050003 13.45" width="85.050003" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.45)"> <g transform="translate(72,-61.24)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="17.579218" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="28.919439" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="38.446724" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="45.385891" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="56.163475" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>定义为<gydF4y2Baspan class="equation" id="EEq1"> <svg height="67.462502" id="M10" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 67.462502" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,67.4625)"> <g transform="translate(72,-18.03)"> <text transform="matrix(1,0,0,-1,129.22,42.88)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,137.56,39.75)"> <tspan style="font-size: 8.75px; " x="0" y="0"> c</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="3.8858881" y="0"> p</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,149.8,42.88)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.03" y="-14.01"> ⎡</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.03" y="-2.55"> ⎢</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.03" y="8.9200001"> ⎢</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.03" y="20.33"> ⎣</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="20.65" y="-9.6899996"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,180.18,49.44)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="6.669024" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="12.270304" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="15.18472" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="22.632671" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="28.627792" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="35.296818" y="0"> )</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,224.86,52.57)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,229.73,49.44)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,197.22,27.56)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,202.09,24.44)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,240.58,56.89)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ⎤</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="0" y="11.46"> ⎥</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="0" y="22.93"> ⎥</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="0" y="34.34"> ⎦</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,246.21,19.62)"> <tspan style="font-size: 8.75px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="2.9144161" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="10.362368" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="16.357489" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="23.026512" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="25.940928" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="31.542208" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,286.49,42.88)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 。</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="187.63" y="0.99000001"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="191.7935" y="0.99000001"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="198.045" y="0.99000001"> )</tgydF4y2Baspan> </text> </g> </g> </svg></span> <svg height="16.762501" id="M11" style="vertical-align:-4.68874pt;width:60.674999px;" version="1.1" viewbox="0 0 60.674999 16.762501" width="60.674999" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,16.7625)"> <g transform="translate(72,-58.59)"> <text transform="matrix(1,0,0,-1,-71.95,63.31)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-62.22,60.18)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="6.669024" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="12.270304" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="15.18472" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="22.632671" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="28.627792" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="35.296818" y="0"> )</tgydF4y2Baspan> </text> </g> </g> </svg>是一个零矩阵的大小<gydF4y2Basvg height="13.45" id="M12" style="vertical-align:-2.21957pt;width:82.25px;" version="1.1" viewbox="0 0 82.25 13.45" width="82.25" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.45)"> <g transform="translate(72,-61.24)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.302952" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="23.080538" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="27.244038" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="40.659756" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="51.999977" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="61.527264" y="0"> )</tgydF4y2Baspan> </text> </g> </g> </svg>,<gydF4y2Basvg height="14.6" id="M13" style="vertical-align:-3.13504pt;width:17.125px;" version="1.1" viewbox="0 0 17.125 14.6" width="17.125" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.6)"> <g transform="translate(72,-60.32)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-67.09,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>是一个单位矩阵的大小<gydF4y2Basvg height="10.725" id="M14" style="vertical-align:-0.3135pt;width:45.075001px;" version="1.1" viewbox="0 0 45.075001 10.725" width="45.075001" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.725)"> <g transform="translate(72,-63.42)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="13.415719" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="24.193304" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>。接收到的信号块<gydF4y2Basvg height="14.0375" id="M15" style="vertical-align:-2.5707pt;width:26.424999px;" version="1.1" viewbox="0 0 26.424999 14.0375" width="26.424999" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.0375)"> <g transform="translate(72,-60.77)"> <text transform="matrix(1,0,0,-1,-65.82,63.52)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ̂</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-6.1300001" y="0.13"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="0.35905701" y="0.13"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.5225558" y="0.13"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="10.736547" y="0.13"> )</tgydF4y2Baspan> </text> </g> </g> </svg>被编写为<gydF4y2Baspan class="equation" id="EEq2"> <svg height="18.8375" id="M16" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 18.8375" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,18.8375)"> <g transform="translate(72,-56.93)"> <text transform="matrix(1,0,0,-1,97.13,62.14)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ̂</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-6.1300001" y="0.14"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="2.46" y="0.13"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="6.6234989" y="0.13"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.83749" y="0.13"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="20.464319" y="0.13"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="32.504707" y="0.13"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="42.232044" y="0.13"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,147.71,58.88)"> <tspan style="font-size: 8.75px; " x="0" y="0"> c</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="3.8858881" y="0"> p</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,156.47,62)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="8.5799999" y="-0.0099999998"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.743499" y="-0.0099999998"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="18.957491" y="-0.0099999998"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="25.896654" y="-0.0099999998"> +</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="37.236877" y="-0.0099999998"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,200.67,67.01)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,206.22,62.01)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="10.37749" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="18.016823" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="30.044708" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="36.996376" y="0"> ⊗</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,253.76,58.88)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,264.45,62.14)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ̂</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-6.1300001" y="0.14"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="2.46" y="0.13"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="6.6234989" y="0.13"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.83749" y="0.13"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="19.776655" y="0.13"> +</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="31.116877" y="0.13"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,302.52,67.01)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,308.08,62.01)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="10.37749" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="16.616488" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="166.03999" y="0.67000002"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="170.20351" y="0.67000002"> 2</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="176.455" y="0.67000002"> )</tgydF4y2Baspan> </text> </g> </g> </svg></span>在哪里<gydF4y2Basvg height="15.325" id="M17" style="vertical-align:-2.21957pt;width:31.3375px;" version="1.1" viewbox="0 0 31.3375 15.325" width="31.3375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.325)"> <g transform="translate(72,-59.74)"> <text transform="matrix(1,0,0,-1,-71.95,62)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-65,67.01)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-61.52,62)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="10.37749" y="0"> )</tgydF4y2Baspan> </text> </g> </g> </svg>是一个信道噪声向量的大小<gydF4y2Basvg height="14.7125" id="M18" style="vertical-align:-3.2316pt;width:100.9375px;" version="1.1" viewbox="0 0 100.9375 14.7125" width="100.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.7125)"> <g transform="translate(72,-60.23)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="17.579218" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="28.919439" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="38.446724" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="45.385891" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="56.163475" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="62.414974" y="0"> 。</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="65.540726" y="0"> ⊗</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,4.13,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>作为循环卷积和代表<gydF4y2Basvg height="14.8625" id="M19" style="vertical-align:-3.25793pt;width:120.2125px;" version="1.1" viewbox="0 0 120.2125 14.8625" width="120.2125" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.8625)"> <g transform="translate(72,-60.11)"> <text transform="matrix(1,0,0,-1,-71.95,63.41)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="10.414999" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="22.455387" y="0"> {</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="28.456827" y="0"> ℎ</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-36.27,60.28)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-31.4,63.41)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="5.2012482" y="0"> …</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="19.79225" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="25.006001" y="0"> ℎ</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,0.82,60.28)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="6.4239678" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="12.419088" y="0"> 1</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,18.12,63.41)"> <tspan style="font-size: 12.50px; " x="0" y="0"> }</tgydF4y2Baspan> </text> </g> </g> </svg>表示信道脉冲响应可以安排托普利兹矩阵通道<gydF4y2Basvg height="10.6875" id="M20" style="vertical-align:-0.0pt;width:12.2875px;" version="1.1" viewbox="0 0 12.2875 10.6875" width="12.2875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.6875)"> <g transform="translate(72,-63.45)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>的大小<gydF4y2Basvg height="13.45" id="M21" style="vertical-align:-2.21957pt;width:123.6125px;" version="1.1" viewbox="0 0 123.6125 13.45" width="123.6125" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.45)"> <g transform="translate(72,-61.24)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="17.579218" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="28.919439" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="38.446724" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="45.385891" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="56.163475" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="60.326977" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="73.755196" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="85.095421" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="94.622704" y="0"> )</tgydF4y2Baspan> </text> </g> </g> </svg>,<gydF4y2Basvg height="10.75" id="M22" style="vertical-align:-0.15048pt;width:11.9125px;" version="1.1" viewbox="0 0 11.9125 10.75" width="11.9125" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.75)"> <g transform="translate(72,-63.4)"> <text transform="matrix(1,0,0,-1,-71.95,63.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>是多路径的长度。后丢弃的CP部分接收信号,接收到的信号<gydF4y2Basvg height="13.8875" id="M23" style="vertical-align:-2.5707pt;width:26.112499px;" version="1.1" viewbox="0 0 26.112499 13.8875" width="26.112499" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.8875)"> <g transform="translate(72,-60.89)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="6.2515001" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="10.414999" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="16.62899" y="0"> )</tgydF4y2Baspan> </text> </g> </g> </svg>的大小<gydF4y2Basvg height="11.075" id="M24" style="vertical-align:-0.3135pt;width:38.1875px;" version="1.1" viewbox="0 0 38.1875 11.075" width="38.1875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.075)"> <g transform="translate(72,-63.14)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="13.415719" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="24.193304" y="0"> 1</tgydF4y2Baspan> </text> </g> </g> </svg>可以写成<gydF4y2Baspan class="equation" id="EEq3"> <svg height="17.35" id="M25" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 17.35" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,17.35)"> <g transform="translate(72,-58.12)"> <text transform="matrix(1,0,0,-1,134.77,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="8.5895615" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.75306" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="18.967051" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="26.593882" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="38.63427" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,182.44,60.07)"> <tspan style="font-size: 8.75px; " x="0" y="0"> c</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="3.8858881" y="0"> p</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,191.2,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="9.727334" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,209.27,60.07)"> <tspan style="font-size: 8.75px; " x="0" y="0"> c</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="3.8858881" y="0"> p</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,218.03,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="8.5770578" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.740557" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="18.954548" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="25.893713" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="37.233932" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="46.273602" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="50.437103" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="56.651093" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="62.902592" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="256.09" y="1.26"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="260.25351" y="1.26"> 3</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="266.505" y="1.26"> )</tgydF4y2Baspan> </text> </g> </g> </svg></span>在哪里<gydF4y2Basvg height="16.975" id="M26" style="vertical-align:-5.03984pt;width:22.362499px;" version="1.1" viewbox="0 0 22.362499 16.975" width="22.362499" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,16.975)"> <g transform="translate(72,-58.42)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-62.92,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> c</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="3.8858881" y="0"> p</tgydF4y2Baspan> </text> </g> </g> </svg>表示CP丢弃矩阵的大小<gydF4y2Basvg height="13.45" id="M27" style="vertical-align:-2.21957pt;width:83.637497px;" version="1.1" viewbox="0 0 83.637497 13.45" width="83.637497" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.45)"> <g transform="translate(72,-61.24)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="13.415719" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="24.193304" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="28.356804" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="41.772522" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="53.112743" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="62.64003" y="0"> )</tgydF4y2Baspan> </text> </g> </g> </svg>定义为<gydF4y2Baspan class="equation" id="EEq4"> <svg height="33.862499" id="M28" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 33.862499" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,33.8625)"> <g transform="translate(72,-44.91)"> <text transform="matrix(1,0,0,-1,142.18,56.32)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,151.2,53.2)"> <tspan style="font-size: 8.75px; " x="0" y="0"> c</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="3.8858881" y="0"> p</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,163.44,56.32)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.03" y="4.9200001"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="17.77" y="1.87"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,190.94,51.32)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="7.4479518" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="13.049232" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,217.83,54.45)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,222.7,51.32)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,231.43,51.4)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,237.17,46.51)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="7.4479518" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="13.049232" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="15.963648" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="23.4116" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="29.406719" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="36.075745" y="0"> )</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,474.12,55.33)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> 4</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="10.414999" y="0"> )</tgydF4y2Baspan> </text> </g> </g> </svg></span>和<gydF4y2Basvg height="17" id="M29" style="vertical-align:-5.03984pt;width:100px;" version="1.1" viewbox="0 0 100 17" width="100" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,17)"> <g transform="translate(72,-58.4)"> <text transform="matrix(1,0,0,-1,-71.95,63.47)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="6.9516678" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="11.115167" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="17.329159" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="24.955988" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="36.996376" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-25.92,60.35)"> <tspan style="font-size: 8.75px; " x="0" y="0"> c</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="3.8858881" y="0"> p</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-17.16,63.47)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="6.9516678" y="0"> ′</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="10.565035" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="14.728534" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="20.942526" y="0"> )</tgydF4y2Baspan> </text> </g> </g> </svg>。接下来,CP插入和丢弃CP部分后,信道矩阵<gydF4y2Basvg height="10.6875" id="M30" style="vertical-align:-0.0pt;width:12.2875px;" version="1.1" viewbox="0 0 12.2875 10.6875" width="12.2875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.6875)"> <g transform="translate(72,-63.45)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>会变成了循环矩阵吗<gydF4y2Basvg height="14.7125" id="M31" style="vertical-align:-3.2316pt;width:17.987499px;" version="1.1" viewbox="0 0 17.987499 14.7125" width="17.987499" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.7125)"> <g transform="translate(72,-60.23)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-62.22,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>的大小<gydF4y2Basvg height="10.725" id="M32" style="vertical-align:-0.3135pt;width:45.075001px;" version="1.1" viewbox="0 0 45.075001 10.725" width="45.075001" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.725)"> <g transform="translate(72,-63.42)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="13.415719" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="24.193304" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>可以写成<gydF4y2Baspan class="equation" id="EEq5"> <svg height="20.012501" id="M33" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 20.012501" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,20.0125)"> <g transform="translate(72,-55.99)"> <text transform="matrix(1,0,0,-1,146.37,61.07)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,156.09,57.94)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,164.13,61.07)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.040389" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,185.2,57.94)"> <tspan style="font-size: 8.75px; " x="0" y="0"> c</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="3.8858881" y="0"> p</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,193.96,61.07)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="9.727334" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,212.03,57.94)"> <tspan style="font-size: 8.75px; " x="0" y="0"> c</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="3.8858881" y="0"> p</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,224.26,61.07)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,243.94,66.24)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,252.86,61.07)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="8.8396206" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="16.478954" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="221.25999" y="0.2"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="225.42349" y="0.2"> 5</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="231.675" y="0.2"> )</tgydF4y2Baspan> </text> </g> </g> </svg></span>在哪里<gydF4y2Basvg height="10.6625" id="M34" style="vertical-align:-0.0pt;width:11.1px;" version="1.1" viewbox="0 0 11.1 10.6625" width="11.1" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.6625)"> <g transform="translate(72,-63.47)"> <text transform="matrix(1,0,0,-1,-71.95,63.52)"> <tspan style="font-size: 12.50px; " x="0" y="0"> Λ</tgydF4y2Baspan> </text> </g> </g> </svg>频域信道响应,<gydF4y2Basvg height="10.6875" id="M35" style="vertical-align:-0.0pt;width:9.6750002px;" version="1.1" viewbox="0 0 9.6750002 10.6875" width="9.6750002" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.6875)"> <g transform="translate(72,-63.45)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>被定义为一个离散傅里叶变换(DFT)矩阵。DFT后,频域均衡器<gydF4y2Basvg height="10.925" id="M36" style="vertical-align:-0.1881pt;width:15.75px;" version="1.1" viewbox="0 0 15.75 10.925" width="15.75" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.925)"> <g transform="translate(72,-63.26)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>和IDFT ara处理、平衡的信号可以写成<gydF4y2Baspan class="equation" id="EEq6"> <svg height="18.424999" id="M37" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 18.424999" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,18.425)"> <g transform="translate(72,-57.26)"> <text transform="matrix(1,0,0,-1,122.08,61.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ̂</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-6.1300001" y="0.13"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="2.447058" y="0.13"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="6.6105571" y="0.13"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.824548" y="0.13"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="20.463881" y="0.13"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="32.504269" y="0.13"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,162.23,66.24)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,171.16,61.07)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.503" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="21.342621" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="28.981955" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="37.559013" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="41.722511" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="47.936501" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="54.875668" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="66.215889" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,245.03,66.24)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,253.95,61.07)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.503" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="20.142332" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="29.169498" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="33.332996" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="39.546989" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="45.798489" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="220.17" y="-0.44"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="224.3335" y="-0.44"> 6</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="230.58499" y="-0.44"> )</tgydF4y2Baspan> </text> </g> </g> </svg></span>在哪里<gydF4y2Basvg height="16.5" id="M38" style="vertical-align:-2.21957pt;width:26.1625px;" version="1.1" viewbox="0 0 26.1625 16.5" width="26.1625" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,16.5)"> <g transform="translate(72,-58.8)"> <text transform="matrix(1,0,0,-1,-71.95,61.07)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> ⋅</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="7.739357" y="0"> )</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-60.05,66.24)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>代表了共轭转置。均衡器由zero-forcing (ZF)和最小均方误差(MMSE)均衡器,地方ZF被定义为<gydF4y2Basvg height="17.862499" id="M39" style="vertical-align:-3.13504pt;width:73.099998px;" version="1.1" viewbox="0 0 73.099998 17.862499" width="73.099998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,17.8625)"> <g transform="translate(72,-57.71)"> <text transform="matrix(1,0,0,-1,-71.95,60.89)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-59.45,57.76)"> <tspan style="font-size: 8.75px; " x="0" y="0"> Z</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="5.3562241" y="0"> F</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-45.25,60.89)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> Λ</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-24.44,66.03)"> <tspan style="font-size: 8.75px; " x="0" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="5.99512" y="0"> 1</tgydF4y2Baspan> </text> </g> </g> </svg>和MMSE被定义为<gydF4y2Basvg height="21.125" id="M40" style="vertical-align:-3.25792pt;width:216.7375px;" version="1.1" viewbox="0 0 216.7375 21.125" width="216.7375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,21.125)"> <g transform="translate(72,-55.1)"> <text transform="matrix(1,0,0,-1,-71.95,58.4)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-59.45,55.27)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 米</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="7.7805281" y="0"> 米</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="15.561056" y="0"> 年代</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="20.427168" y="0"> E</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-29.7,58.4)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="16.191385" y="0"> Λ</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-4.72,63.54)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,4.2,58.4)"> <tspan style="font-size: 12.50px; " x="0" y="0"> Λ</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="11.552772" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="22.892994" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,34.44,63.4)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="-0.62" y="8.1300001"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,39.32,58.4)"> <tspan style="font-size: 12.50px; " x="0" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="3.4758339" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,50.13,63.4)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="-0.62" y="8.1300001"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,55.01,58.4)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,59.87,55.27)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,68.6,58.4)"> <tspan style="font-size: 12.50px; " x="0" y="0"> )</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,72.77,66.03)"> <tspan style="font-size: 8.75px; " x="0" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="5.99512" y="0"> 1</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,83.64,58.4)"> <tspan style="font-size: 12.50px; " x="0" y="0"> Λ</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,92.41,63.54)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>,<gydF4y2Basvg height="17.762501" id="M41" style="vertical-align:-3.20526pt;width:15.3875px;" version="1.1" viewbox="0 0 15.3875 17.762501" width="15.3875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,17.7625)"> <g transform="translate(72,-57.79)"> <text transform="matrix(1,0,0,-1,-71.95,61.03)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-64.61,66.03)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="-0.63" y="8.1199999"> </tgydF4y2Baspan> </text> </g> </g> </svg>和<gydF4y2Basvg height="17.775" id="M42" style="vertical-align:-3.21404pt;width:15.3875px;" version="1.1" viewbox="0 0 15.3875 17.775" width="15.3875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,17.775)"> <g transform="translate(72,-57.78)"> <text transform="matrix(1,0,0,-1,-71.95,61.03)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-64.61,66.03)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="-0.63" y="8.1199999"> </tgydF4y2Baspan> </text> </g> </g> </svg>噪声和信号的方差。平衡的信号可以写成<gydF4y2Baspan class="equation" id="EEq7"> <svg height="92.137497" id="M43" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 92.137497" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,92.1375)"> <g transform="translate(72,1.71)"> <text transform="matrix(1,0,0,-1,94.64,61.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ̂</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-6.1199999" y="0.13"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="2.457058" y="0.13"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="6.6205568" y="0.13"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.834548" y="0.13"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="20.473881" y="0.13"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="32.501766" y="0.13"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,134.79,66.24)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,143.72,61.07)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,156.22,57.94)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 米</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="7.7805281" y="0"> 米</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="15.561056" y="0"> 年代</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="20.427168" y="0"> E</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,182.49,61.07)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="7.6393328" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,199.86,57.94)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,204.43,61.07)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="8.5770578" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.740557" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="18.954548" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="25.893713" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="37.246437" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,249.32,66.24)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,258.24,61.07)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,270.75,57.94)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 米</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="7.7805281" y="0"> 米</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="15.561056" y="0"> 年代</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="20.427168" y="0"> E</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,297.02,61.07)"> <tspan style="font-size: 12.50px; " x="-182.39" y="55.23"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="7.6393328" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="16.666498" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="20.829998" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="27.043989" y="0"> )</tgydF4y2Baspan> </text> <g> <path d="m 126.67,17.18 9.73,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,126.67,5.84)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="9.727334" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="18.304392" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="22.467892" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="28.681883" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="35.621048" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="46.961269" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,181.28,11.01)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,190.21,5.84)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,202.71,2.71)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 米</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="7.7805281" y="0"> 米</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="15.561056" y="0"> 年代</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="20.427168" y="0"> E</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,228.99,5.84)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="7.6393328" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="16.666498" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="20.829998" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="27.043989" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="33.29549" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="245.13" y="-26.18"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="249.2935" y="-26.18"> 7</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="255.545" y="-26.18"> )</tgydF4y2Baspan> </text> </g> </g> </svg></span>在哪里<gydF4y2Basvg height="19.9125" id="M44" style="vertical-align:-3.25792pt;width:128.2625px;" version="1.1" viewbox="0 0 128.2625 19.9125" width="128.2625" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.9125)"> <g transform="translate(72,-56.07)"> <g> <path d="m -71.95,70.71 9.73,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-71.95,59.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="13.190665" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="25.231054" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-39.07,64.54)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-30.15,59.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-17.64,56.25)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 米</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="7.7805281" y="0"> 米</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="15.561056" y="0"> 年代</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="20.427168" y="0"> E</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,8.63,59.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="7.6393328" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,26,56.25)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>,<gydF4y2Basvg height="15.85" id="M45" style="vertical-align:-0.0pt;width:12.2875px;" version="1.1" viewbox="0 0 12.2875 15.85" width="12.2875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.85)"> <g transform="translate(72,-59.32)"> <g> <path d="m -71.95,70.71 9.73,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-71.95,59.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>是一个新的通道矩阵的大小<gydF4y2Basvg height="10.725" id="M46" style="vertical-align:-0.3135pt;width:45.075001px;" version="1.1" viewbox="0 0 45.075001 10.725" width="45.075001" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.725)"> <g transform="translate(72,-63.42)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="13.415719" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="24.193304" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>。在图<gydF4y2Baa href="//www.newsama.com/journals/ijap/2012/910824/fig2/" target="_blank">3</gydF4y2Baa>的能量,<gydF4y2Basvg height="15.85" id="M47" style="vertical-align:-0.0pt;width:12.2875px;" version="1.1" viewbox="0 0 12.2875 15.85" width="12.2875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.85)"> <g transform="translate(72,-59.32)"> <g> <path d="m -71.95,70.71 9.73,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-71.95,59.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>集中对角线上,但仍然有残留ISI,这将降低系统的性能。所以干扰消除系统提出了取消三军情报局,实现更好的性能。</p><d我v class="partial-carousel-wrapper"> <div class="floats-partial-section"> <div class="floats-partial-content"> <div class="partial-carousel--full-image partial-carousel-ed495f0207f45be90526696d0205ab38"> <div class="partial-carousel--single-image"> <img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/figures/910824.fig.001.jpg"> <br> <strong></strong> </div> </div> </div> <div class="floats-partial-middle"> <div class="floats-partial-middle--thumbs"> <div class="partial-carousel-dots-ed495f0207f45be90526696d0205ab38 partial-carousel-thumbnail"> <button aria-label="Slide to " class="partial-carousel-dot"><img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/thumbnails/910824.fig.001_th.jpg"><br><strong></strong></button> </div> </div> <div class="floats-partial-middle--nav"> <div class="partial-carousel-next-prev-ed495f0207f45be90526696d0205ab38 partial-carousel-next-prev"> <button aria-label="Previous" class="carousel-prev"></button> <button aria-label="Next" class="carousel-next"></button> </div> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图1</gydF4y2Baspan> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/ijap/2012/910824/fig1/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> <table> <tbody> <tr> <td>SCBT系统的框图。</td></tgydF4y2Bar> </tbody> </table> </div> </div> </div> </div> <h5 id="sec2.2">2.2。频域判决反馈均衡器</h5><h6gydF4y2Baid="sec2.2.1">2.2.1。迭代MMSE判决反馈均衡器</h6><p>gydF4y2Ba图<gydF4y2Baa href="//www.newsama.com/journals/ijap/2012/910824/fig3/" target="_blank">2</gydF4y2Baa>显示了一个烈性黑啤酒FD-DFE图系统,假设接收块喂DFT运算符,它的输出块被表示为(<gydF4y2Basvg height="14.3875" id="M48" style="vertical-align:-3.25793pt;width:98.0625px;" version="1.1" viewbox="0 0 98.0625 14.3875" width="98.0625" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.3875)"> <g transform="translate(72,-60.49)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-65.26,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-60.39,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="5.2012482" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-48.49,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 1</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-43.61,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="5.2012482" y="0"> …</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="19.79225" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="24.993498" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-11.92,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="7.4479518" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="13.443072" y="0"> 1</tgydF4y2Baspan> </text> </g> </g> </svg>)。均衡器繁殖这个信号块与前馈系数(<gydF4y2Basvg height="14.3875" id="M49" style="vertical-align:-3.25793pt;width:101.95px;" version="1.1" viewbox="0 0 101.95 14.3875" width="101.95" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.3875)"> <g transform="translate(72,-60.49)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-64.22,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-59.35,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="5.2012482" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-46.41,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 1</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-41.54,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="5.2012482" y="0"> …</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="19.79225" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="25.006001" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-8.81,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="7.4479518" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="13.443072" y="0"> 1</tgydF4y2Baspan> </text> </g> </g> </svg>),以及由此产生的信号块进入逆DFT,收益率输出块(<gydF4y2Basvg height="14.725" id="M50" style="vertical-align:-3.25793pt;width:98.762497px;" version="1.1" viewbox="0 0 98.762497 14.725" width="98.762497" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.725)"> <g transform="translate(72,-60.22)"> <text transform="matrix(1,0,0,-1,-65.27,63.52)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ̂</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-6.6766019" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-65.07,60.4)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-60.2,63.52)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="11.87785" y="0"> ̂</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="5.2137508" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-48.11,60.4)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 1</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-43.24,63.52)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="5.2012482" y="0"> …</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="19.79225" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="31.682602" y="0"> ̂</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="25.018503" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-11.36,60.4)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="7.4479518" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="13.443072" y="0"> 1</tgydF4y2Baspan> </text> </g> </g> </svg>)的阈值检测器为信号传输块基地首次决定。</p><d我v class="partial-carousel-wrapper"> <div class="floats-partial-section"> <div class="floats-partial-content"> <div class="partial-carousel--full-image partial-carousel-96b8f7f1ec28dbd0045ac12bc56d7972"> <div class="partial-carousel--single-image"> <img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/figures/910824.fig.003.jpg"> <br> <strong></strong> </div> </div> </div> <div class="floats-partial-middle"> <div class="floats-partial-middle--thumbs"> <div class="partial-carousel-dots-96b8f7f1ec28dbd0045ac12bc56d7972 partial-carousel-thumbnail"> <button aria-label="Slide to " class="partial-carousel-dot"><img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/thumbnails/910824.fig.003_th.jpg"><br><strong></strong></button> </div> </div> <div class="floats-partial-middle--nav"> <div class="partial-carousel-next-prev-96b8f7f1ec28dbd0045ac12bc56d7972 partial-carousel-next-prev"> <button aria-label="Previous" class="carousel-prev"></button> <button aria-label="Next" class="carousel-next"></button> </div> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图2</gydF4y2Baspan> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/ijap/2012/910824/fig3/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> <table> <tbody> <tr> <td>迭代FD-DFE框图。</td></tgydF4y2Bar> </tbody> </table> </div> </div> </div> </div> <div class="partial-carousel-wrapper"> <div class="floats-partial-section"> <div class="floats-partial-content"> <div class="partial-carousel--full-image partial-carousel-9b2bea4b3748dd1cf8a871a4da8e5fef"> <div class="partial-carousel--single-image"> <img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/figures/910824.fig.002.jpg"> <br> <strong></strong> </div> </div> </div> <div class="floats-partial-middle"> <div class="floats-partial-middle--thumbs"> <div class="partial-carousel-dots-9b2bea4b3748dd1cf8a871a4da8e5fef partial-carousel-thumbnail"> <button aria-label="Slide to " class="partial-carousel-dot"><img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/thumbnails/910824.fig.002_th.jpg"><br><strong></strong></button> </div> </div> <div class="floats-partial-middle--nav"> <div class="partial-carousel-next-prev-9b2bea4b3748dd1cf8a871a4da8e5fef partial-carousel-next-prev"> <button aria-label="Previous" class="carousel-prev"></button> <button aria-label="Next" class="carousel-next"></button> </div> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图3</gydF4y2Baspan> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/ijap/2012/910824/fig2/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> <table> <tbody> <tr> <td>时域信道矩阵的特点<gydF4y2Basvg height="15.85" id="M51" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 12.2875 15.85" width="12.2875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.85)"> <g transform="translate(72,-59.32)"> <g> <path d="m -71.95,70.71 9.73,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-71.95,59.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>。</td></tgydF4y2Bar> </tbody> </table> </div> </div> </div> </div> <p>一旦接收第一组的决定,这个决定块喂给一个反馈滤波器系数(<gydF4y2Basvg height="14.3875" id="M52" style="vertical-align:-3.25793pt;width:105.6125px;" version="1.1" viewbox="0 0 105.6125 14.3875" width="105.6125" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.3875)"> <g transform="translate(72,-60.49)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-63.25,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-58.37,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="5.2012482" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-44.46,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 1</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-39.59,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="5.2012482" y="0"> …</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="19.79225" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="25.006001" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-5.88,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="7.4479518" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="13.443072" y="0"> 1</tgydF4y2Baspan> </text> </g> </g> </svg>)和迭代的价值实现。在<gydF4y2Basvg height="10.95" id="M53" style="vertical-align:-0.1254pt;width:17.6875px;" version="1.1" viewbox="0 0 17.6875 10.95" width="17.6875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.95)"> <g transform="translate(72,-63.24)"> <text transform="matrix(1,0,0,-1,-71.95,63.41)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.213511" y="0"> t</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="7.7893691" y="0"> h</tgydF4y2Baspan> </text> </g> </g> </svg>迭代,前馈和反馈滤波器块供应<gydF4y2Baspan class="equation" id="EEq8"> <svg height="16.5375" id="M54" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 16.5375" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,16.5375)"> <g transform="translate(72,-58.77)"> <text transform="matrix(1,0,0,-1,62.02,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,71.27,60.07)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,78.2,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="8.389513" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="16.028847" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="28.056732" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,113.99,60.07)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,120.93,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="8.3770103" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="14.62851" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,142.25,60.07)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,149.88,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="11.340221" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,169.92,60.07)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,176.86,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="8.3770103" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="14.62851" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,201.37,60.07)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,208.3,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="10.915119" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="22.255341" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="28.50684" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="34.758339" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="49.92448" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="59.614304" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="71.654694" y="0"> 0</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="77.906197" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="83.107445" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="89.35894" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="94.572693" y="0"> …</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="109.1637" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="114.36494" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="127.79316" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="139.13338" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="145.38489" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="265.82001" y="0.63"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="269.98349" y="0.63"> 8</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="276.23499" y="0.63"> )</tgydF4y2Baspan> </text> </g> </g> </svg></span>在哪里<gydF4y2Basvg height="14.6875" id="M55" style="vertical-align:-3.20526pt;width:31.225px;" version="1.1" viewbox="0 0 31.225 14.6875" width="31.225" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.6875)"> <g transform="translate(72,-60.25)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-64.22,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-59.38,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="8.1394529" y="0"> )</tgydF4y2Baspan> </text> </g> </g> </svg>和<gydF4y2Basvg height="14.6875" id="M56" style="vertical-align:-3.20526pt;width:32.4375px;" version="1.1" viewbox="0 0 32.4375 14.6875" width="32.4375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.6875)"> <g transform="translate(72,-60.25)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-63.25,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-58.4,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="8.1394529" y="0"> )</tgydF4y2Baspan> </text> </g> </g> </svg>系数集,分别的前馈和反馈滤波器系数<gydF4y2Basvg height="10.95" id="M57" style="vertical-align:-0.1254pt;width:17.6875px;" version="1.1" viewbox="0 0 17.6875 10.95" width="17.6875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.95)"> <g transform="translate(72,-63.24)"> <text transform="matrix(1,0,0,-1,-71.95,63.41)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.213511" y="0"> t</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="7.7893691" y="0"> h</tgydF4y2Baspan> </text> </g> </g> </svg>迭代,<gydF4y2Basvg height="14.6875" id="M58" style="vertical-align:-3.20526pt;width:59.375px;" version="1.1" viewbox="0 0 59.375 14.6875" width="59.375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.6875)"> <g transform="translate(72,-60.25)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-62.07,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-57.22,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="10.902616" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="22.255341" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="28.50684" y="0"> )</tgydF4y2Baspan> </text> </g> </g> </svg>在上一次迭代频域的决定。给出初始MMSE均衡器<gydF4y2Baspan class="equation" id="EEq9"> <svg height="45.4375" id="M59" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 45.4375" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,45.4375)"> <g transform="translate(72,-35.65)"> <text transform="matrix(1,0,0,-1,89.31,53.47)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,97.04,50.35)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,103.97,53.48)"> <tspan style="font-size: 12.50px; " x="64.019997" y="-9.1999998"> Λ</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> 0</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="10.414999" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="18.054333" y="0"> =</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,176.76,67.83)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ∗</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="0" y="8.2700005"> </tgydF4y2Baspan> </text> <g> <path d="m 135.26,56.6 79.31,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,135.26,40.26)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,142.6,44.76)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="-0.63" y="7.1599998"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,147.47,40.26)"> <tspan style="font-size: 12.50px; " x="0" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="3.4758339" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,158.29,44.76)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="-0.63" y="7.1599998"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,165.94,40.26)"> <tspan style="font-size: 12.50px; " x="0" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="11.34" y="2.51"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="17.190001" y="-1.59"> |</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="17.190001" y="1.5700001"> |</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="19.690001" y="-7.1054274e-015"> Λ</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,194.41,37.14)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,199.26,41.85)"> <tspan style="font-size: 12.50px; " x="0" y="0"> |</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="0" y="3.1600001"> |</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.5799999" y="4.0999999"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,209.7,47.79)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,215.77,53.47)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="15.166139" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="24.84346" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="36.88385" y="0"> 0</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="43.135349" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="48.349102" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="54.600601" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="59.81435" y="0"> …</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="74.392853" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="79.606598" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="93.022324" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="104.36254" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="110.61404" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="258.35001" y="2.77"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="262.51349" y="2.77"> 9</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="268.76498" y="2.77"> )</tgydF4y2Baspan> </text> </g> </g> </svg></span>在哪里<gydF4y2Basvg height="14.65" id="M60" style="vertical-align:-3.20526pt;width:17.15px;" version="1.1" viewbox="0 0 17.15 14.65" width="17.15" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.65)"> <g transform="translate(72,-60.28)"> <text transform="matrix(1,0,0,-1,-71.95,63.52)"> <tspan style="font-size: 12.50px; " x="0" y="0"> Λ</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-63.17,60.4)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>频域信道响应,初步反馈滤波器系数给出吗<gydF4y2Baspan class="equation" id="EEq10"> <svg height="16.5375" id="M61" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 16.5375" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,16.5375)"> <g transform="translate(72,-58.77)"> <text transform="matrix(1,0,0,-1,181.87,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,190.57,60.07)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,197.5,63.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> 0</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="10.414999" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="18.041828" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="30.082218" y="0"> 0</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="36.333717" y="0"> 。</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="270.37" y="0.63"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="274.53351" y="0.63"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="280.785" y="0.63"> 0</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="287.0365" y="0.63"> )</tgydF4y2Baspan> </text> </g> </g> </svg></span>第一个均衡器决策使用<gydF4y2Basvg height="14.75" id="M62" style="vertical-align:-3.25793pt;width:41.612499px;" version="1.1" viewbox="0 0 41.612499 14.75" width="41.612499" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.75)"> <g transform="translate(72,-60.2)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-65.4,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-57.05,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 1</tgydF4y2Baspan> </text> </g> </g> </svg>和的定义<gydF4y2Basvg height="11.05" id="M63" style="vertical-align:-3.2316pt;width:14.8625px;" version="1.1" viewbox="0 0 14.8625 11.05" width="14.8625" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.05)"> <g transform="translate(72,-63.16)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-65.4,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>给出了在<gydF4y2Baa href="#B3">4</gydF4y2Baa>]<gydF4y2Baspan class="equation" id="EEq11"> <svg height="47.912498" id="M64" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 47.912498" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,47.9125)"> <g transform="translate(72,-33.67)"> <text transform="matrix(1,0,0,-1,171.74,49.71)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,178.3,46.58)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,185.23,49.71)"> <tspan style="font-size: 12.50px; " x="37.66" y="-9.25"> √</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="0" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="21.055052" y="0"> −</tgydF4y2Baspan> </text> <g> <path d="m 234.49,70.71 4.23,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,234.49,58.38)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <g> <path d="m 218.83,52.83 23.94,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,221.59,44)"> <tspan style="font-size: 6.25px; " x="0" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="3.1259999" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,222.31,36.95)"> <tspan style="font-size: 12.50px; " x="0" y="0"> √</tgydF4y2Baspan> </text> <g> <path d="m 233.92,48.71 8.85,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,233.92,36.41)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="10.04" y="-13.3"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="233.95" y="-13.3"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="238.11349" y="-13.3"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="244.36501" y="-13.3"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="250.6165" y="-13.3"> )</tgydF4y2Baspan> </text> </g> </g> </svg></span>在哪里<gydF4y2Basvg height="10.325" id="M65" style="vertical-align:-0.0pt;width:11.1875px;" version="1.1" viewbox="0 0 11.1875 10.325" width="11.1875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.325)"> <g transform="translate(72,-63.74)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>是迭代的数量。在<gydF4y2Basvg height="10.95" id="M66" style="vertical-align:-0.1254pt;width:17.6875px;" version="1.1" viewbox="0 0 17.6875 10.95" width="17.6875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.95)"> <g transform="translate(72,-63.24)"> <text transform="matrix(1,0,0,-1,-71.95,63.41)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.213511" y="0"> t</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="7.7893691" y="0"> h</tgydF4y2Baspan> </text> </g> </g> </svg>迭代,前馈和反馈滤波器系数,分别给出了<gydF4y2Baspan class="equation" id="EEq12"> <svg height="106.4875" id="M67" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 106.4875" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,106.4875)"> <g transform="translate(72,13.19)"> <text transform="matrix(1,0,0,-1,124.31,53.47)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,132.04,50.35)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,138.97,53.48)"> <tspan style="font-size: 12.50px; " x="83.32" y="-9.1999998"> Λ</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="8.389513" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="16.016342" y="0"> =</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,231.07,67.83)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ∗</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="0" y="8.2700005"> </tgydF4y2Baspan> </text> <g> <path d="m 168.23,56.6 121.97,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,168.23,41.04)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,175.57,45.54)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="-0.63" y="7.1599998"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,180.44,41.04)"> <tspan style="font-size: 12.50px; " x="0" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="3.4758339" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,191.26,45.54)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="-0.63" y="7.1599998"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,198.91,41.04)"> <tspan style="font-size: 12.50px; " x="0" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="11.34" y="2.52"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="17.200001" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="26.214663" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="37.567387" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,243.53,45.54)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="-0.5" y="9.2200003"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="2.2831359" y="9.2200003"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="8.2782564" y="9.2200003"> 1</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,256.68,38.52)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="7.9400001" y="-4.0999999"> |</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="7.9400001" y="-0.94"> |</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="10.44" y="-2.52"> Λ</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,275.9,37.91)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,280.74,42.62)"> <tspan style="font-size: 12.50px; " x="0" y="0"> |</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="0" y="3.1600001"> |</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,285.33,47.79)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,291.4,53.47)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-188.89999" y="50.34"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,111.2,0.01)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,118.14,3.14)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="8.3770103" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="16.016342" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="28.056732" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,152.75,0.01)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="2.7831359" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="8.7782564" y="0"> 1</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,168.49,-6.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="8.2600002" y="-9.7299995"> Λ</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,185.53,0.01)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,190.38,3.13)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,198.1,0.01)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,205.04,3.14)"> <tspan style="font-size: 12.50px; " x="30.620001" y="-7.25"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="8.3770103" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="15.316175" y="0"> −</tgydF4y2Baspan> </text> <g> <path d="m 232.91,6.26 11.76,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,232.91,-5.62)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,249.83,19.08)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,245.87,-3.42)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,246.58,-10.6)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="4.3497438" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="10.344864" y="0"> 1</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,262.02,3.13)"> <tspan style="font-size: 12.50px; " x="0" y="0"> Λ</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,270.8,0.01)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,275.65,3.13)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,283.37,0.01)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,290.31,3.14)"> <tspan style="font-size: 12.50px; " x="12.55" y="9.7399998"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="22.9" y="0.0099999998"> 。</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="8.3770103" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="177.56" y="-23.139999"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="181.7235" y="-23.139999"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="187.97501" y="-23.139999"> 2</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="194.2265" y="-23.139999"> )</tgydF4y2Baspan> </text> </g> </g> </svg></span></p> <h6 id="sec2.2.2">2.2.2。迭代MF-Based判决反馈均衡器</h6><p>gydF4y2Ba在迭代教育部提出的在<gydF4y2Baa href="#B4">5</gydF4y2Baa>),教育部的前馈滤波器转变从一个线性MMSE线性过滤在第一<gydF4y2Basvg height="13.45" id="M68" style="vertical-align:-2.21957pt;width:47.0625px;" version="1.1" viewbox="0 0 47.0625 13.45" width="47.0625" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.45)"> <g transform="translate(72,-61.24)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="15.791289" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="27.13151" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="33.383011" y="0"> )</tgydF4y2Baspan> </text> </g> </g> </svg>迭代匹配滤波器(MF)在最后的迭代。在<gydF4y2Basvg height="10.95" id="M69" style="vertical-align:-0.1254pt;width:17.6875px;" version="1.1" viewbox="0 0 17.6875 10.95" width="17.6875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.95)"> <g transform="translate(72,-63.24)"> <text transform="matrix(1,0,0,-1,-71.95,63.41)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.213511" y="0"> t</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="7.7893691" y="0"> h</tgydF4y2Baspan> </text> </g> </g> </svg>迭代,前馈和反馈滤波器系数,分别给出了<gydF4y2Baspan class="equation" id="EEq14"> <svg height="70.337502" id="M70" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 70.337502" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,70.3375)"> <g transform="translate(72,-15.73)"> <text transform="matrix(1,0,0,-1,110.42,53.47)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,118.15,50.35)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,125.08,53.48)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="8.3770103" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="16.016342" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="28.056732" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,159.69,50.35)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,191.22,62.68)"> <tspan style="font-size: 12.50px; " x="0" y="0"> Λ</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,200,67.83)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ∗</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="0" y="8.2700005"> </tgydF4y2Baspan> </text> <g> <path d="m 164.34,56.6 67.61,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,164.34,41.04)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,171.68,45.54)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="-0.62" y="7.1599998"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,176.56,41.04)"> <tspan style="font-size: 12.50px; " x="0" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="3.4758339" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,187.37,45.54)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="-0.62" y="7.1599998"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,195.03,41.04)"> <tspan style="font-size: 12.50px; " x="0" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="11.34" y="-1.58"> |</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="11.34" y="1.58"> |</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="13.84" y="0"> Λ</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,217.65,37.91)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,222.49,42.62)"> <tspan style="font-size: 12.50px; " x="0" y="0"> |</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="0" y="3.1600001"> |</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,227.08,47.79)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,235.93,53.47)"> <tspan style="font-size: 12.50px; " x="0" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="11.34" y="2.51"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="17.190001" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="26.217167" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="37.557388" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,280.05,50.35)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,283.5,50.96)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="7.9400001" y="-2.51"> Λ</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,300.22,58.62)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ∗</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="0" y="8.2700005"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,305.29,53.47)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-150.92999" y="33.939999"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,163.06,16.4)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,169.99,19.54)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1700001" y="0.0099999998"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="8.3835106" y="0.0099999998"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="16.022844" y="0.0099999998"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="28.063232" y="0.0099999998"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="37.090401" y="0.0099999998"> −</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="48.430618" y="0.0099999998"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,226.16,16.4)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,233.09,19.54)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1599998" y="0.0099999998"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="8.386014" y="0.0099999998"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="14.625011" y="0.0099999998"> Λ</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,256.5,16.4)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,261.35,19.53)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 。</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="206.52" y="-21.209999"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="210.6835" y="-21.209999"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="216.935" y="-21.209999"> 3</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="223.18649" y="-21.209999"> )</tgydF4y2Baspan> </text> </g> </g> </svg></span>第一个均衡器决策使用<gydF4y2Basvg height="14.75" id="M71" style="vertical-align:-3.25793pt;width:41.612499px;" version="1.1" viewbox="0 0 41.612499 14.75" width="41.612499" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.75)"> <g transform="translate(72,-60.2)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-65.4,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-57.05,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 1</tgydF4y2Baspan> </text> </g> </g> </svg>也就是说,均衡器显然是一个线性MMSE均衡器。然后,<gydF4y2Basvg height="11.0375" id="M72" style="vertical-align:-3.22282pt;width:12.6375px;" version="1.1" viewbox="0 0 12.6375 11.0375" width="12.6375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.0375)"> <g transform="translate(72,-63.17)"> <text transform="matrix(1,0,0,-1,-71.95,66.44)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-65.4,63.31)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>参数线性减少,<gydF4y2Baspan class="equation" id="EEq16"> <svg height="30.575001" id="M73" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 30.575001" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,30.575)"> <g transform="translate(72,-47.54)"> <text transform="matrix(1,0,0,-1,179.29,56.35)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,185.84,53.22)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,192.77,56.35)"> <tspan style="font-size: 12.50px; " x="35.919998" y="-7.25"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="0" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="21.055052" y="0"> −</tgydF4y2Baspan> </text> <g> <path d="m 226.37,59.47 8.86,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,226.37,47.59)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="10.05" y="-8.7600002"> 。</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="241.5" y="-9.0600004"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="245.6635" y="-9.0600004"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="251.91499" y="-9.0600004"> 4</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="258.1665" y="-9.0600004"> )</tgydF4y2Baspan> </text> </g> </g> </svg></span>在最后的迭代,<gydF4y2Basvg height="14.7125" id="M74" style="vertical-align:-3.22282pt;width:39.837502px;" version="1.1" viewbox="0 0 39.837502 14.7125" width="39.837502" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.7125)"> <g transform="translate(72,-60.23)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-65.4,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-58.47,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 0</tgydF4y2Baspan> </text> </g> </g> </svg>,前馈滤波器成为MF。</p><h4gydF4y2Baid="parallel-interference-cancellation">3所示。并行干扰消除</h4><p>gydF4y2BaISI残渣会降低系统的性能。因此,在本节中,使用图片取消了ICI SCBT系统中存在的问题。</p><h5gydF4y2Baid="sec3.1">3.1。传统的并行干扰消除</h5><p>gydF4y2Ba图<gydF4y2Baa href="//www.newsama.com/journals/ijap/2012/910824/fig4/" target="_blank">4</gydF4y2Baa>干扰的原理图,彩色盒子干涉接收的符号。<gydF4y2Basvg height="20.9375" id="M75" style="vertical-align:-4.37273pt;width:28.4125px;" version="1.1" viewbox="0 0 28.4125 20.9375" width="28.4125" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,20.9375)"> <g transform="translate(72,-55.25)"> <g> <path d="m -71.95,70.71 12.04,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-71.95,59.66)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-59.91,56.53)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="4.9098721" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>是表示为<gydF4y2Basvg height="10.9875" id="M76" style="vertical-align:-0.15048pt;width:21.6625px;" version="1.1" viewbox="0 0 21.6625 10.9875" width="21.6625" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.9875)"> <g transform="translate(72,-63.21)"> <text transform="matrix(1,0,0,-1,-71.95,63.41)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="7.3892732" y="0"> t</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="10.965131" y="0"> h</tgydF4y2Baspan> </text> </g> </g> </svg>符号数据<gydF4y2Basvg height="10.975" id="M77" style="vertical-align:-0.13794pt;width:17.275px;" version="1.1" viewbox="0 0 17.275 10.975" width="17.275" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.975)"> <g transform="translate(72,-63.22)"> <text transform="matrix(1,0,0,-1,-71.95,63.41)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="3.888433" y="0"> t</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="7.4517879" y="0"> h</tgydF4y2Baspan> </text> </g> </g> </svg>干扰的象征。当<gydF4y2Basvg height="9.9250002" id="M78" style="vertical-align:-0.13794pt;width:4.9875002px;" version="1.1" viewbox="0 0 4.9875002 9.9250002" width="4.9875002" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,9.925)"> <g transform="translate(72,-64.06)"> <text transform="matrix(1,0,0,-1,-71.95,64.25)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>不同于<gydF4y2Basvg height="10.75" id="M79" style="vertical-align:-0.15048pt;width:9.375px;" version="1.1" viewbox="0 0 9.375 10.75" width="9.375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.75)"> <g transform="translate(72,-63.4)"> <text transform="matrix(1,0,0,-1,-71.95,63.6)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>,也就是说,<gydF4y2Basvg height="20.9375" id="M80" style="vertical-align:-4.37273pt;width:90.787498px;" version="1.1" viewbox="0 0 90.787498 20.9375" width="90.787498" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,20.9375)"> <g transform="translate(72,-55.25)"> <text transform="matrix(1,0,0,-1,-71.95,59.66)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="5.9639311" y="0"> ≠</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="16.616488" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="23.268084" y="0"> ,</tgydF4y2Baspan> </text> <g> <path d="m -43.47,70.71 12.04,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-43.47,59.66)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-31.43,56.53)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="2.7218721" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="4.9098721" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-20.84,59.66)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="6.8766499" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="11.040149" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="17.254141" y="0"> )</tgydF4y2Baspan> </text> </g> </g> </svg>三军情报局将会降低系统的性能。图<gydF4y2Baa href="//www.newsama.com/journals/ijap/2012/910824/fig5/" target="_blank">5</gydF4y2Baa>是图片在SCBT系统的框图。<gydF4y2Basvg height="14.0875" id="M81" style="vertical-align:-3.20526pt;width:14.775px;" version="1.1" viewbox="0 0 14.775 14.0875" width="14.775" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.0875)"> <g transform="translate(72,-60.73)"> <text transform="matrix(1,0,0,-1,-65.27,63.97)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-6.6766019" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-65.07,60.85)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>是平衡的信号<gydF4y2Basvg height="14.65" id="M82" style="vertical-align:-3.20526pt;width:14.775px;" version="1.1" viewbox="0 0 14.775 14.65" width="14.775" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.65)"> <g transform="translate(72,-60.28)"> <text transform="matrix(1,0,0,-1,-65.27,63.52)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ̂</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-6.6766019" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-65.07,60.4)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>在(<gydF4y2Baa href="#EEq7">7</gydF4y2Baa>取消ISI)后,可以给出<gydF4y2Baspan class="equation" id="EEq17"> <svg height="29.2875" id="M83" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 29.2875" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,29.2875)"> <g transform="translate(72,-48.57)"> <text transform="matrix(1,0,0,-1,118.08,57.03)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-6.6766019" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,118.28,53.9)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,126.6,57.03)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.04" y="4.9200001"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="26.08" y="0"> ̂</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="19.403399" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,152.88,53.9)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,160.51,57.03)"> <tspan style="font-size: 12.50px; " x="0" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="11.34" y="4.9200001"> </tgydF4y2Baspan> </text> <g> <path d="m 179.21,68.37 6.95,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,179.21,57.03)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,186.16,53.9)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,193.79,57.03)"> <tspan style="font-size: 12.50px; " x="0" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="11.340221" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,212.09,53.9)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,216.93,52.11)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="9.6899996" y="-2.4000001"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="23.42" y="-7.7399998"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="44.490002" y="-7.7399998"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="36.610001" y="-4.9200001"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="15.54" y="-4.9200001"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="25.267334" y="-4.9200001"> −</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,260.5,53.9)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,265.34,54.51)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="5.8600001" y="2.4000001"> </tgydF4y2Baspan> </text> <g> <path d="m 280.88,68.08 12.04,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,280.88,57.03)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,292.92,66.03)"> <tspan style="font-size: 8.75px; " x="0" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="5.99512" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="0" y="12.13"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="4.3497438" y="12.13"> ,</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="6.537744" y="12.13"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,304.31,57.03)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="163.56" y="-0.13"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="167.7235" y="-0.13"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="173.97501" y="-0.13"> 5</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="180.2265" y="-0.13"> )</tgydF4y2Baspan> </text> </g> </g> </svg></span>在哪里<gydF4y2Basvg height="19.8375" id="M84" style="vertical-align:-3.20526pt;width:14.875px;" version="1.1" viewbox="0 0 14.875 19.8375" width="14.875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.8375)"> <g transform="translate(72,-56.13)"> <g> <path d="m -71.95,70.71 6.95,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-71.95,59.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-65,56.25)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>是<gydF4y2Basvg height="13.5625" id="M85" style="vertical-align:-2.21957pt;width:56.049999px;" version="1.1" viewbox="0 0 56.049999 13.5625" width="56.049999" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.5625)"> <g transform="translate(72,-61.15)"> <text transform="matrix(1,0,0,-1,-71.95,63.41)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="13.153156" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="24.493378" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="30.744877" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="34.908375" y="0"> t</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="38.484234" y="0"> h</tgydF4y2Baspan> </text> </g> </g> </svg>行向量的<gydF4y2Basvg height="15.85" id="M86" style="vertical-align:-0.0pt;width:12.2875px;" version="1.1" viewbox="0 0 12.2875 15.85" width="12.2875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.85)"> <g transform="translate(72,-59.32)"> <g> <path d="m -71.95,70.71 9.73,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-71.95,59.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>,<gydF4y2Basvg height="14.6875" id="M87" style="vertical-align:-3.20526pt;width:14.875px;" version="1.1" viewbox="0 0 14.875 14.6875" width="14.875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.6875)"> <g transform="translate(72,-60.25)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-65,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>被定义为<gydF4y2Basvg height="19.35" id="M88" style="vertical-align:-4.57706pt;width:168.2625px;" version="1.1" viewbox="0 0 168.2625 19.35" width="168.2625" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.35)"> <g transform="translate(72,-56.52)"> <text transform="matrix(1,0,0,-1,-71.95,61.13)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-65,58.01)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-56.68,61.13)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.04" y="2.51"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-37.77,61.61)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-33.39,59.42)"> <tspan style="font-size: 6.25px; " x="0" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="3.1259999" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="7.1272802" y="0"> </tgydF4y2Baspan> </text> <g> <path d="m -19.19,69.34 8.43,0" style="fill:none;stroke:#000000;stroke-width:0.57800001;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-19.19,61.61)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-10.76,59.42)"> <tspan style="font-size: 6.25px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="3.107244" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="4.6702442" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,0.99,61.61)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,5.36,59.42)"> <tspan style="font-size: 6.25px; " x="0" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="3.1259999" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="7.1272802" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="9.2091961" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="14.529648" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="18.812267" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="21.919512" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="26.202131" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="29.328133" y="0"> )</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,39.35,58.62)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="6.8800001" y="-2.51"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="24.129999" y="-5.3400002"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="16.25" y="-2.51"> </tgydF4y2Baspan> </text> </g> </g> </svg>是QPSK的调制信号后决定<gydF4y2Baspan class="equation" id="EEq18"> <svg height="34.424999" id="M89" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 34.424999" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,34.425)"> <g transform="translate(72,-44.46)"> <text transform="matrix(1,0,0,-1,156.04,56.71)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="14.58" y="7.7399998"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="20.52" y="1.97"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="20.32" y="4.6999998"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-7.8800001" y="2.8199999"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="2.5349989" y="2.8199999"> =</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,183.76,48.89)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,194.81,54.74)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-0.2" y="2.73"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,202.02,48.89)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 1</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,212.87,52.01)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ⋯</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="19.84" y="-2.73"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="19.639999" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,239.91,48.89)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="7.4479518" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="13.443072" y="0"> 1</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,258.23,48.97)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,263.96,66.24)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,467.87,55.1)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="10.414999" y="0"> 6</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="16.666498" y="0"> )</tgydF4y2Baspan> </text> </g> </g> </svg></span>和<gydF4y2Basvg height="17.625" id="M90" style="vertical-align:-3.20526pt;width:14.875px;" version="1.1" viewbox="0 0 14.875 17.625" width="14.875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,17.625)"> <g transform="translate(72,-57.9)"> <text transform="matrix(1,0,0,-1,-64.07,63.97)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-7.8800001" y="2.8199999"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-65,58.02)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>被定义为<gydF4y2Baspan class="equation" id="EEq19"> <svg height="34.424999" id="M91" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 34.424999" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,34.425)"> <g transform="translate(72,-44.46)"> <text transform="matrix(1,0,0,-1,144.98,56.71)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-7.8800001" y="2.8199999"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,144.06,50.76)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,152.38,53.89)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.03" y="4.9200001"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="17.77" y="1.88"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,176.4,48.89)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="4.3759999" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="9.9772797" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,197.41,54.74)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-0.2" y="2.73"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,204.61,48.89)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,215.43,52.01)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,221.69,48.89)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="4.3759999" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="9.9772797" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="12.891696" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="20.339647" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="26.334768" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="30.684511" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="36.67963" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="41.055634" y="0"> )</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,266.16,48.97)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,271.89,66.24)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,278.61,53.89)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 。</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="189.25999" y="-1.21"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="193.42349" y="-1.21"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="199.675" y="-1.21"> 7</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="205.9265" y="-1.21"> )</tgydF4y2Baspan> </text> </g> </g> </svg></span>取消ISI条款后,取消了信号干扰<gydF4y2Basvg height="10.2625" id="M92" style="vertical-align:-0.17555pt;width:8.25px;" version="1.1" viewbox="0 0 8.25 10.2625" width="8.25" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.2625)"> <g transform="translate(72,-63.79)"> <text transform="matrix(1,0,0,-1,-65.82,63.97)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-6.1300001" y="0.13"> </tgydF4y2Baspan> </text> </g> </g> </svg>可以检测到决定操作。</p><d我v class="partial-carousel-wrapper"> <div class="floats-partial-section"> <div class="floats-partial-content"> <div class="partial-carousel--full-image partial-carousel-86bba2e80f48c2ee411e53322b5a9bee"> <div class="partial-carousel--single-image"> <img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/figures/910824.fig.004.jpg"> <br> <strong></strong> </div> </div> </div> <div class="floats-partial-middle"> <div class="floats-partial-middle--thumbs"> <div class="partial-carousel-dots-86bba2e80f48c2ee411e53322b5a9bee partial-carousel-thumbnail"> <button aria-label="Slide to " class="partial-carousel-dot"><img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/thumbnails/910824.fig.004_th.jpg"><br><strong></strong></button> </div> </div> <div class="floats-partial-middle--nav"> <div class="partial-carousel-next-prev-86bba2e80f48c2ee411e53322b5a9bee partial-carousel-next-prev"> <button aria-label="Previous" class="carousel-prev"></button> <button aria-label="Next" class="carousel-next"></button> </div> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图4</gydF4y2Baspan> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/ijap/2012/910824/fig4/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> <table> <tbody> <tr> <td>原理图符号间干扰。</td></tgydF4y2Bar> </tbody> </table> </div> </div> </div> </div> <div class="partial-carousel-wrapper"> <div class="floats-partial-section"> <div class="floats-partial-content"> <div class="partial-carousel--full-image partial-carousel-e34384e9a6ddf8d4542b927d00f8f185"> <div class="partial-carousel--single-image"> <img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/figures/910824.fig.005.jpg"> <br> <strong></strong> </div> </div> </div> <div class="floats-partial-middle"> <div class="floats-partial-middle--thumbs"> <div class="partial-carousel-dots-e34384e9a6ddf8d4542b927d00f8f185 partial-carousel-thumbnail"> <button aria-label="Slide to " class="partial-carousel-dot"><img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/thumbnails/910824.fig.005_th.jpg"><br><strong></strong></button> </div> </div> <div class="floats-partial-middle--nav"> <div class="partial-carousel-next-prev-e34384e9a6ddf8d4542b927d00f8f185 partial-carousel-next-prev"> <button aria-label="Previous" class="carousel-prev"></button> <button aria-label="Next" class="carousel-next"></button> </div> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图5</gydF4y2Baspan> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/ijap/2012/910824/fig5/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> <table> <tbody> <tr> <td>SCBT系统框图的图片。</td></tgydF4y2Bar> </tbody> </table> </div> </div> </div> </div> <h5 id="sec3.2">3.2。部分图片最大比率相结合</h5><p>gydF4y2BaPIC算法可以有效地克服ISI问题明显,提高系统性能。然而,所示(<gydF4y2Baa href="#EEq17">15</gydF4y2Baa>)只有一抽头均衡器,它将导致损失的能量检测标志。此外,为了提高接收机性能<gydF4y2Baa href="#sec3.1">3.1</gydF4y2Baa>,需要的迭代次数增加。它将促使更多的计算复杂性。因此,为了缓解上述问题,部分图片最大比精梳技术提出了本文。MRC的援助计划,提议的部分图片技术可以有效地执行干扰消除和获得时间分集增益的好处。事实上,更多的阀门进行加权组合,这将导致更高的时间分集增益。此外,它表明该技术可以实现更好的误码率由于分集增益。这主要是由于该方案的能力来有效地处理干扰的影响,实现固有的时间和MRC多样性。</p><p>框图如图<gydF4y2Baa href="//www.newsama.com/journals/ijap/2012/910824/fig6/" target="_blank">6</gydF4y2Baa>和部分图片的说明图所示<gydF4y2Baa href="//www.newsama.com/journals/ijap/2012/910824/fig7/" target="_blank">7</gydF4y2Baa>。其结构类似于图片。主要的区别在于,PIC-MRC做部分图片,然后结合其他收到了MRC符号的部分能量算法。最后,使用MRC均衡器可以获得检测信号。为了简化博览会,我们考虑一个简单的例子。首先,从(<gydF4y2Baa href="#EEq7">7</gydF4y2Baa>)和(<gydF4y2Baa href="#EEq17">15</gydF4y2Baa>),部分并行干扰重建<gydF4y2Basvg height="19.9125" id="M93" style="vertical-align:-3.25793pt;width:128.3875px;" version="1.1" viewbox="0 0 128.3875 19.9125" width="128.3875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,19.9125)"> <g transform="translate(72,-56.07)"> <text transform="matrix(1,0,0,-1,-71.95,59.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-62.22,56.25)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-57.35,59.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> </text> <g> <path d="m -53.19,70.71 9.73,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-53.19,59.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.503" y="0"> −</tgydF4y2Baspan> </text> <g> <path d="m -29.34,70.71 9.73,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-29.34,59.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-19.61,56.25)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-14.73,59.37)"> <tspan style="font-size: 12.50px; " x="16.200001" y="-2.8299999"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="37.27" y="-2.8299999"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="29.4" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="0" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="8.3199997" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="18.047335" y="0"> −</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,21.62,56.25)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,26.49,59.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> )</tgydF4y2Baspan> </text> </g> </g> </svg>,在那里<gydF4y2Basvg height="14.9875" id="M94" style="vertical-align:-3.25793pt;width:18.375px;" version="1.1" viewbox="0 0 18.375 14.9875" width="18.375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.9875)"> <g transform="translate(72,-60.01)"> <text transform="matrix(1,0,0,-1,-71.95,63.31)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-62.22,60.18)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> </g> </g> </svg>是并行干扰的部分选择矩阵窗口大小<gydF4y2Basvg height="10.325" id="M95" style="vertical-align:-0.0pt;width:17.237499px;" version="1.1" viewbox="0 0 17.237499 10.325" width="17.237499" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.325)"> <g transform="translate(72,-63.74)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>选择,<gydF4y2Basvg height="14.9875" id="M96" style="vertical-align:-3.25793pt;width:286.39999px;" version="1.1" viewbox="0 0 286.39999 14.9875" width="286.39999" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.9875)"> <g transform="translate(72,-60.01)"> <text transform="matrix(1,0,0,-1,-71.95,63.31)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-62.22,60.18)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-53.88,63.31)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.04" y="0.039999999"> (</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-35.59,64.29)"> <tspan style="font-size: 8.75px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="2.9144161" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-29.27,62.1)"> <tspan style="font-size: 6.25px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="6.2832599" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="8.0213156" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="11.147316" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="15.148596" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="21.431856" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="23.169912" y="0"> 2</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-2.48,64.29)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,1.9,62.1)"> <tspan style="font-size: 6.25px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="6.2832599" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="8.0213156" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="11.147316" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="15.148596" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="21.431856" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="23.169912" y="0"> 2</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,28.69,64.29)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ]</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,31.6,67.79)"> <tspan style="font-size: 6.25px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,40.01,64.29)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,44.39,62.1)"> <tspan style="font-size: 6.25px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="6.2832599" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="10.28454" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="12.366456" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="17.686909" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="21.969528" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="28.252789" y="0"> )</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,78.69,64.29)"> <tspan style="font-size: 8.75px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="2.9144161" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,85.98,62.1)"> <tspan style="font-size: 6.25px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="6.2832599" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="8.0213156" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="11.147316" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="15.148596" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="21.431856" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="23.169912" y="0"> 2</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,112.77,64.29)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,116.18,62.1)"> <tspan style="font-size: 6.25px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="6.2832599" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="8.0213156" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="11.147316" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="15.148596" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="21.431856" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 6.25px; " x="23.169912" y="0"> 2</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,142.97,64.29)"> <tspan style="font-size: 8.75px; " x="0" y="0"> ]</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,145.88,67.79)"> <tspan style="font-size: 6.25px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,152.91,63.27)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ]</tgydF4y2Baspan> </text> </g> </g> </svg>与单位矩阵<gydF4y2Basvg height="14.875" id="M97" style="vertical-align:-3.35449pt;width:52.837502px;" version="1.1" viewbox="0 0 52.837502 14.875" width="52.837502" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.875)"> <g transform="translate(72,-60.1)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-67.09,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="8.7957602" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="11.228816" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="15.604816" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="21.206097" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="30.001856" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="32.434914" y="0"> 2</tgydF4y2Baspan> </text> </g> </g> </svg>,零矩阵<gydF4y2Basvg height="16.725" id="M98" style="vertical-align:-4.68874pt;width:61.637501px;" version="1.1" viewbox="0 0 61.637501 16.725" width="61.637501" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,16.725)"> <g transform="translate(72,-58.62)"> <text transform="matrix(1,0,0,-1,-71.95,63.35)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-65.7,60.22)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="8.7957602" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="14.39704" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="17.311457" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="24.759409" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="30.754528" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="39.550289" y="0"> )</tgydF4y2Baspan> </text> </g> </g> </svg>和<gydF4y2Basvg height="15.0625" id="M99" style="vertical-align:-3.35449pt;width:54.575001px;" version="1.1" viewbox="0 0 54.575001 15.0625" width="54.575001" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.0625)"> <g transform="translate(72,-59.95)"> <text transform="matrix(1,0,0,-1,-71.95,63.35)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-65.7,60.22)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="8.7957602" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="11.228816" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="15.604816" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="21.206097" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="30.001856" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="32.434914" y="0"> 2</tgydF4y2Baspan> </text> </g> </g> </svg>。接下来,收到部分信号<gydF4y2Basvg height="14.9875" id="M100" style="vertical-align:-3.25793pt;width:26.5px;" version="1.1" viewbox="0 0 26.5 14.9875" width="26.5" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.9875)"> <g transform="translate(72,-60.01)"> <text transform="matrix(1,0,0,-1,-71.95,63.31)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-62.22,60.18)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-51.22,63.45)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ̂</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-6.1300001" y="0.14"> </tgydF4y2Baspan> </text> </g> </g> </svg>可以减去的部分并行干扰。可以表达的残余信号<gydF4y2Baspan class="equation" id="EEq20"> <svg height="28.9625" id="M101" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 28.9625" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,28.9625)"> <g transform="translate(72,-48.83)"> <text transform="matrix(1,0,0,-1,123.41,57.58)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ̂</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-6.27" y="0.28999999"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,124.09,54.16)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,132.44,57.29)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,154.2,54.16)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,165.2,57.43)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ̂</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-6.1199999" y="0.14"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="3.1447229" y="0.14"> −</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="14.497447" y="0.14"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,189.43,54.16)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,196.38,52.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <g> <path d="m 203.75,68.63 9.73,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,203.75,57.29)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.503" y="0"> −</tgydF4y2Baspan> </text> <g> <path d="m 227.6,68.63 9.73,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,227.6,57.29)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,237.33,54.16)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,242.2,52.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="9.6899996" y="-2.4100001"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="23.41" y="-7.75"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="44.490002" y="-7.75"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="36.610001" y="-4.9200001"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="15.54" y="-4.9200001"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="25.254831" y="-4.9200001"> −</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,285.76,54.16)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,290.64,54.78)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="7.9299998" y="-2.51"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="177.23" y="-2.51"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="181.39349" y="-2.51"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="187.645" y="-2.51"> 8</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="193.8965" y="-2.51"> )</tgydF4y2Baspan> </text> </g> </g> </svg></span>在哪里<gydF4y2Basvg height="21.6875" id="M102" style="vertical-align:-4.68874pt;width:127.6875px;" version="1.1" viewbox="0 0 127.6875 21.6875" width="127.6875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,21.6875)"> <g transform="translate(72,-54.65)"> <g> <path d="m -71.95,70.71 9.73,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-71.95,59.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-62.22,56.25)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-53.88,59.37)"> <tspan style="font-size: 12.50px; " x="20.709999" y="-2.8299999"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="16.209999" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="0" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.040389" y="0"> (</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-30.72,56.25)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-17.51,59.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-11.26,56.25)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="7.4479518" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="13.049232" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="15.963648" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="23.4116" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="29.406719" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="33.782719" y="0"> )</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,25.93,59.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ]</tgydF4y2Baspan> </text> </g> </g> </svg>,<gydF4y2Basvg height="13.85" id="M103" style="vertical-align:-0.17555pt;width:8.8125px;" version="1.1" viewbox="0 0 8.8125 13.85" width="8.8125" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.85)"> <g transform="translate(72,-60.92)"> <text transform="matrix(1,0,0,-1,-64.07,63.97)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-7.8800001" y="2.8199999"> </tgydF4y2Baspan> </text> </g> </g> </svg>和<gydF4y2Basvg height="17.6875" id="M104" style="vertical-align:-3.25793pt;width:14.9125px;" version="1.1" viewbox="0 0 14.9125 17.6875" width="14.9125" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,17.6875)"> <g transform="translate(72,-57.85)"> <text transform="matrix(1,0,0,-1,-64.07,63.97)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-7.8800001" y="2.8199999"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-65,58.02)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> </g> </g> </svg>决定后的调制信号(<gydF4y2Baa href="#EEq18">16</gydF4y2Baa>)- (<gydF4y2Baa href="#EEq19">17</gydF4y2Baa>),<gydF4y2Basvg height="17.6875" id="M105" style="vertical-align:-3.25793pt;width:14.9125px;" version="1.1" viewbox="0 0 14.9125 17.6875" width="14.9125" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,17.6875)"> <g transform="translate(72,-57.85)"> <text transform="matrix(1,0,0,-1,-67.45,63.97)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-4.5" y="2.8199999"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-65,58.02)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> </g> </g> </svg>是第一个列向量的<gydF4y2Basvg height="15.85" id="M106" style="vertical-align:-0.0pt;width:12.2875px;" version="1.1" viewbox="0 0 12.2875 15.85" width="12.2875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.85)"> <g transform="translate(72,-59.32)"> <g> <path d="m -71.95,70.71 9.73,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-71.95,59.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>。MRC操作后,检测到的信号可以由MRC获得均衡<gydF4y2Baspan class="equation" id="EEq21"> <svg height="57.712502" id="M107" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 57.712502" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,57.7125)"> <g transform="translate(72,-25.83)"> <text transform="matrix(1,0,0,-1,115.58,42.87)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-6.6766019" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,115.78,39.74)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,124.12,42.87)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="17.74" y="-17.25"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="13.24" y="-14.42"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,144.31,64.81)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="0" y="10.65"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,153.24,57.29)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,162.96,54.16)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,169.92,52.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="13.49" y="-5.0599999"> ̂</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="27.99" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="7.3699999" y="-4.9200001"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="16.634724" y="-4.9200001"> −</tgydF4y2Baspan> </text> <g> <path d="m 205.27,68.63 9.73,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,205.27,57.29)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.503" y="0"> −</tgydF4y2Baspan> </text> <g> <path d="m 229.12,68.63 9.73,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,229.12,57.29)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,238.85,54.16)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,243.72,52.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="9.6899996" y="-2.4100001"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="23.42" y="-7.75"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="44.490002" y="-7.75"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="36.610001" y="-4.9200001"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="15.54" y="-4.9200001"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="25.267334" y="-4.9200001"> −</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,287.29,54.16)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,292.16,54.78)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="5.8499999" y="2.4100001"> </tgydF4y2Baspan> </text> <g> <path d="m 137.36,45.99 168.25,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,198.25,31.08)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 为</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="0" y="2.8299999"> 为</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="6.54" y="1.41"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,214.52,26.54)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,223.9,32.49)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-4.5100002" y="2.8199999"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,226.35,26.54)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,231.22,31.08)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 为</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="0" y="2.8299999"> 为</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,239.84,37.19)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,306.81,42.87)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 。</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="161.06" y="-2.9200001"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="165.2235" y="-2.9200001"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="171.47501" y="-2.9200001"> 9</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="177.7265" y="-2.9200001"> )</tgydF4y2Baspan> </text> </g> </g> </svg></span>同样的程序(<gydF4y2Baa href="#EEq20">18</gydF4y2Baa>)和(<gydF4y2Baa href="#EEq21">19</gydF4y2Baa>),<gydF4y2Basvg height="10.95" id="M108" style="vertical-align:-0.12538pt;width:20.174999px;" version="1.1" viewbox="0 0 20.174999 10.95" width="20.174999" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.95)"> <g transform="translate(72,-63.24)"> <text transform="matrix(1,0,0,-1,-71.95,63.41)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="6.2139912" y="0"> t</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="9.7773457" y="0"> h</tgydF4y2Baspan> </text> </g> </g> </svg>部分PIC-MRC信号可以获得的<gydF4y2Baspan class="equation" id="EEq22"> <svg height="57.712502" id="M109" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 57.712502" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,57.7125)"> <g transform="translate(72,-25.83)"> <text transform="matrix(1,0,0,-1,115.63,42.87)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-6.6766019" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,115.83,39.74)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,124.15,42.87)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="17.73" y="-17.25"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="13.23" y="-14.42"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,144.34,64.81)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="0" y="10.65"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,153.26,57.29)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,162.99,54.16)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,169.92,52.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="13.49" y="-5.0599999"> ̂</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="27.99" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="7.3699999" y="-4.9200001"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="16.634724" y="-4.9200001"> −</tgydF4y2Baspan> </text> <g> <path d="m 205.27,68.63 9.73,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,205.27,57.29)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.503" y="0"> −</tgydF4y2Baspan> </text> <g> <path d="m 229.12,68.63 9.73,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,229.12,57.29)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,238.85,54.16)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,243.7,52.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="9.6800003" y="-2.4100001"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="23.41" y="-7.75"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="44.48" y="-7.75"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="36.610001" y="-4.9200001"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="15.53" y="-4.9200001"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="25.257334" y="-4.9200001"> −</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,287.26,54.16)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,292.11,54.78)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="5.8499999" y="2.4100001"> </tgydF4y2Baspan> </text> <g> <path d="m 137.38,45.99 168.18,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,198.27,31.08)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 为</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="0" y="2.8299999"> 为</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="6.54" y="1.41"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,214.53,26.54)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,223.88,32.49)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-4.5" y="2.8199999"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,226.33,26.54)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,231.18,31.08)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 为</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="0" y="2.8299999"> 为</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,239.8,37.19)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,306.76,42.87)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="161.11" y="-2.9200001"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="165.2735" y="-2.9200001"> 2</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="171.52499" y="-2.9200001"> 0</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="177.7765" y="-2.9200001"> )</tgydF4y2Baspan> </text> </g> </g> </svg></span>在哪里<gydF4y2Basvg height="21.6875" id="M110" style="vertical-align:-4.68874pt;width:181.14999px;" version="1.1" viewbox="0 0 181.14999 21.6875" width="181.14999" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,21.6875)"> <g transform="translate(72,-54.65)"> <g> <path d="m -71.95,70.71 9.73,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-71.95,59.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-62.22,56.25)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-53.9,59.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="16.191385" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-31.45,56.25)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="7.4479518" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="13.049232" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-0.72,62.2)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-4.5" y="2.8299999"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,1.74,56.25)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,14.92,59.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,21.17,56.25)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="7.4479518" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="13.049232" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="15.963648" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="23.4116" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="29.406719" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="33.756462" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="39.751583" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="44.127583" y="0"> )</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,68.71,59.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ]</tgydF4y2Baspan> </text> </g> </g> </svg>,<gydF4y2Basvg height="17.625" id="M111" style="vertical-align:-3.20526pt;width:14.875px;" version="1.1" viewbox="0 0 14.875 17.625" width="14.875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,17.625)"> <g transform="translate(72,-57.9)"> <text transform="matrix(1,0,0,-1,-67.45,63.97)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-4.5" y="2.8199999"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-65,58.02)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>是<gydF4y2Basvg height="13.5625" id="M112" style="vertical-align:-2.21957pt;width:56.049999px;" version="1.1" viewbox="0 0 56.049999 13.5625" width="56.049999" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.5625)"> <g transform="translate(72,-61.15)"> <text transform="matrix(1,0,0,-1,-71.95,63.41)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="13.153156" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="24.493378" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="30.744877" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="34.908375" y="0"> t</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="38.484234" y="0"> h</tgydF4y2Baspan> </text> </g> </g> </svg>列向量的<gydF4y2Basvg height="15.85" id="M113" style="vertical-align:-0.0pt;width:12.2875px;" version="1.1" viewbox="0 0 12.2875 15.85" width="12.2875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,15.85)"> <g transform="translate(72,-59.32)"> <g> <path d="m -71.95,70.71 9.73,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,-71.95,59.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>和部分选择矩阵<gydF4y2Basvg height="14.925" id="M114" style="vertical-align:-3.20526pt;width:18.3375px;" version="1.1" viewbox="0 0 18.3375 14.925" width="18.3375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.925)"> <g transform="translate(72,-60.06)"> <text transform="matrix(1,0,0,-1,-71.95,63.31)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-62.22,60.18)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>是<gydF4y2Baspan class="equation" id="EEq23"> <svg height="211.41251" id="M115" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 211.41251" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,211.4125)"> <g transform="translate(72,97.13)"> <text transform="matrix(1,0,0,-1,-71.95,-8.94)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-62.22,-12.07)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-53.9,-8.94)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.04" y="-65.830002"> ⎧</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.04" y="-55.099998"> ⎪</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.04" y="-43.439999"> ⎪</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.04" y="-31.780001"> ⎪</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.04" y="-20.129999"> ⎪</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.04" y="-8.4700003"> ⎪</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.04" y="3.1900001"> ⎨</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.04" y="14.85"> ⎪</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.04" y="26.5"> ⎪</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.04" y="38.16"> ⎪</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.04" y="49.82"> ⎪</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.04" y="61.48"> ⎪</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.04" y="72.150002"> ⎩</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="36.709999" y="-60.549999"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="42.450001" y="-61.799999"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="47.240002" y="-64.519997"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-1.8,52.46)"> <tspan style="font-size: 8.75px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="2.9144161" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="11.710176" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="14.143232" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="18.519232" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="24.514353" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="28.864096" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="31.778511" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="37.379791" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="40.294209" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="49.08997" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="51.523026" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="55.899025" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="61.894142" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="66.243889" y="0"> )</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,73.84,55.58)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,80.09,52.46)"> <tspan style="font-size: 8.75px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="2.9144161" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="11.710176" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="14.143232" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="18.519232" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="24.514353" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="28.864096" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="31.778511" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="37.379791" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="40.294209" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="49.08997" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="51.523026" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="55.899025" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="61.894142" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="66.243889" y="0"> )</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,149.74,52.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,154.53,62.91)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,167.22,55.37)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,173.47,52.25)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="8.7957602" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="14.39704" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="17.311457" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="24.759409" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="30.754528" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="39.550289" y="0"> )</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,222.42,52.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.7800002" y="-2.72"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,233.46,52.46)"> <tspan style="font-size: 8.75px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="2.9144161" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="11.710176" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="14.143232" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="18.519232" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="24.514353" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="28.864096" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="31.778511" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="37.379791" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="40.294209" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="49.08997" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="51.523026" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="55.899025" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="61.894142" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="66.243889" y="0"> )</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,309.09,55.58)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,313.95,52.46)"> <tspan style="font-size: 8.75px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="2.9144161" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="11.710176" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="14.143232" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="18.519232" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="24.514353" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="28.864096" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="31.778511" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="37.379791" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="40.294209" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="49.08997" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="51.523026" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="55.899025" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="61.894142" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="66.243889" y="0"> )</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,383.61,52.86)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,388.4,62.91)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,395.11,51.61)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="66.059998" y="-12.18"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="7.8299999" y="-4.9200001"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="27.159637" y="-4.9200001"> 我</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="30.635471" y="-4.9200001"> f</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="43.138474" y="-4.9200001"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="52.815796" y="-4.9200001"> <</tgydF4y2Baspan> </text> <g> <path d="m 461.17,59.66 13.69,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,464.89,47.78)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-482.07999" y="37.91"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-477.29001" y="35.189999"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-6.15,9.47)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="8.7957602" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="14.39704" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="17.311457" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="21.6612" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="27.656321" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="36.45208" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="38.885136" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="43.261135" y="0"> )</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,46.5,12.59)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,51.36,9.47)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="8.7957602" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="14.39704" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,81.82,12.59)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,88.07,9.47)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="8.7957602" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="14.39704" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="17.311457" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="24.759409" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="30.754528" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="39.550289" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="41.983345" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="46.359344" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="52.354465" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="56.704208" y="0"> )</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,148.19,9.87)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="58.860001" y="-9.7600002"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="6.8699999" y="-2.51"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="24.12414" y="-2.51"> 我</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="27.599974" y="-2.51"> f</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="35.926971" y="-2.51"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="45.616798" y="-2.51"> ≥</tgydF4y2Baspan> </text> <g> <path d="m 207.05,15.51 13.69,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,210.77,3.63)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="68.220001" y="-16"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="11.16" y="-8.75"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="20.537251" y="-8.75"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="30.227076" y="-8.75"> ≤</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="42.254959" y="-8.75"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="55.683182" y="-8.75"> −</tgydF4y2Baspan> </text> <g> <path d="m 278.99,15.51 13.69,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,282.71,3.63)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-299.89999" y="39.57"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-294.16" y="38.32"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-289.37" y="35.599998"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-1.8,-35.09)"> <tspan style="font-size: 8.75px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="2.9144161" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="11.710176" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="14.143232" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="18.519232" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="24.514353" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="28.864096" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="34.859215" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="42.307167" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="45.221584" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="50.822865" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="53.737282" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="62.533039" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="64.966095" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="69.342094" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="75.337219" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="79.686958" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="85.682083" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="93.130035" y="0"> )</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,100.72,-31.97)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,106.97,-35.09)"> <tspan style="font-size: 8.75px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="2.9144161" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="11.710176" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="14.143232" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="18.519232" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="24.514353" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="28.864096" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="34.859215" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="42.307167" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="45.221584" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="50.822865" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="53.737282" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="62.533039" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="64.966095" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="69.342094" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="75.337219" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="79.686958" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="85.682083" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="93.130035" y="0"> )</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,203.52,-34.69)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,208.31,-24.64)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,221,-32.18)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,227.25,-35.3)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="8.7957602" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="14.39704" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="17.311457" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="24.759409" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="30.754528" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="39.550289" y="0"> )</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,276.19,-34.69)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.79" y="-2.72"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,287.23,-35.09)"> <tspan style="font-size: 8.75px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="2.9144161" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="11.710176" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="14.143232" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="18.519232" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="24.514353" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="28.864096" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="34.859215" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="42.307167" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="45.221584" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="50.822865" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="53.737282" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="62.533039" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="64.966095" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="69.342094" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="75.337219" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="79.686958" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="85.682083" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="93.130035" y="0"> )</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,389.75,-31.97)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,394.61,-35.09)"> <tspan style="font-size: 8.75px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="2.9144161" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="11.710176" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="14.143232" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="18.519232" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="24.514353" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="28.864096" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="34.859215" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="42.307167" y="0"> )</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="45.221584" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="50.822865" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="53.737282" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="62.533039" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="64.966095" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="69.342094" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="75.337219" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="79.686958" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="85.682083" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="93.130035" y="0"> )</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,491.16,-34.69)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,495.95,-24.65)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,502.66,-35.94)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-87.120003" y="31.639999"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-146.61" y="38.889999"> 我</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-143.13417" y="38.889999"> f</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-134.80717" y="38.889999"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-125.11734" y="38.889999"> ></tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-113.08945" y="38.889999"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-99.661232" y="38.889999"> −</tgydF4y2Baspan> </text> <g> <path d="m 415.54,-71.7 13.69,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,419.26,-83.58)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="11.17" y="-8.75"> 。</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="48.610001" y="9.75"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="52.773499" y="9.75"> 2</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="59.024998" y="9.75"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="65.276497" y="9.75"> )</tgydF4y2Baspan> </text> </g> </g> </svg></span></p> <div class="partial-carousel-wrapper"> <div class="floats-partial-section"> <div class="floats-partial-content"> <div class="partial-carousel--full-image partial-carousel-0f8947cdbf45c0037080ec454a63093d"> <div class="partial-carousel--single-image"> <img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/figures/910824.fig.006.jpg"> <br> <strong></strong> </div> </div> </div> <div class="floats-partial-middle"> <div class="floats-partial-middle--thumbs"> <div class="partial-carousel-dots-0f8947cdbf45c0037080ec454a63093d partial-carousel-thumbnail"> <button aria-label="Slide to " class="partial-carousel-dot"><img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/thumbnails/910824.fig.006_th.jpg"><br><strong></strong></button> </div> </div> <div class="floats-partial-middle--nav"> <div class="partial-carousel-next-prev-0f8947cdbf45c0037080ec454a63093d partial-carousel-next-prev"> <button aria-label="Previous" class="carousel-prev"></button> <button aria-label="Next" class="carousel-next"></button> </div> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图6</gydF4y2Baspan> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/ijap/2012/910824/fig6/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> <table> <tbody> <tr> <td>框图的迭代局部PIC-MRC SCBT系统。</td></tgydF4y2Bar> </tbody> </table> </div> </div> </div> </div> <div class="partial-carousel-wrapper"> <div class="floats-partial-section"> <div class="floats-partial-content"> <div class="partial-carousel--full-image partial-carousel-fc2b4f5c6e3b91a62478de9a04036cd1"> <div class="partial-carousel--single-image"> <img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/figures/910824.fig.007.jpg"> <br> <strong></strong> </div> </div> </div> <div class="floats-partial-middle"> <div class="floats-partial-middle--thumbs"> <div class="partial-carousel-dots-fc2b4f5c6e3b91a62478de9a04036cd1 partial-carousel-thumbnail"> <button aria-label="Slide to " class="partial-carousel-dot"><img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/thumbnails/910824.fig.007_th.jpg"><br><strong></strong></button> </div> </div> <div class="floats-partial-middle--nav"> <div class="partial-carousel-next-prev-fc2b4f5c6e3b91a62478de9a04036cd1 partial-carousel-next-prev"> <button aria-label="Previous" class="carousel-prev"></button> <button aria-label="Next" class="carousel-next"></button> </div> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图7</gydF4y2Baspan> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/ijap/2012/910824/fig7/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> <table> <tbody> <tr> <td>部分选择矩阵部分PIC-MRC的插图。</td></tgydF4y2Bar> </tbody> </table> </div> </div> </div> </div> <p>值得注意的是,均衡器(<gydF4y2Baa href="#EEq21">19</gydF4y2Baa>)和(<gydF4y2Baa href="#EEq22">20.</gydF4y2Baa>)仍一抽头均衡器复杂性较低,不产生噪音由于增强问题<gydF4y2Basvg height="20.9125" id="M116" style="vertical-align:-3.20526pt;width:55.537498px;" version="1.1" viewbox="0 0 55.537498 20.9125" width="55.537498" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,20.9125)"> <g transform="translate(72,-55.27)"> <text transform="matrix(1,0,0,-1,-71.95,58.51)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 为</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="6.5390692" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-55.68,55.39)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-46.33,61.34)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-4.5100002" y="2.8299999"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-43.88,55.39)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-39.04,58.51)"> <tspan style="font-size: 12.50px; " x="0" y="0"> 为</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-32.5,66.03)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</tgydF4y2Baspan> </text> </g> </g> </svg>健壮的通道响应总结。部分PIC-MRC算法不仅可以获得分集增益,但也减少了计算复杂度比传统图片方案<gydF4y2Baa href="#sec3.1">3.1</gydF4y2Baa>因为它需要更多的迭代循环在接收机端提高性能。</p><h4gydF4y2Baid="partial-pic-mrc-simo-system">4所示。部分PIC-MRC单系统</h4><p>gydF4y2Ba在本节中,提出部分PIC-MRC系统扩展到多个天线系统。</p><h5gydF4y2Baid="sec4.1">4.1。部分PIC-MRC单系统</h5><p>gydF4y2Ba单系统的优点是,可以实现更好的误码性能不使用任何额外的传输能量和带宽。与一个传输和单系统<gydF4y2Basvg height="14.2375" id="M117" style="vertical-align:-3.13504pt;width:22.137501px;" version="1.1" viewbox="0 0 22.137501 14.2375" width="22.137501" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.2375)"> <g transform="translate(72,-60.61)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-61.31,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>接收天线如图<gydF4y2Baa href="//www.newsama.com/journals/ijap/2012/910824/fig8/" target="_blank">8</gydF4y2Baa>。在每个接收天线,相同的均衡器处理程序,例如,频域均衡和局部PIC-MRC操作与迭代数<gydF4y2Basvg height="10.325" id="M118" style="vertical-align:-0.0pt;width:11.1875px;" version="1.1" viewbox="0 0 11.1875 10.325" width="11.1875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.325)"> <g transform="translate(72,-63.74)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>。最后,决定方案用于检测信号的组合<gydF4y2Basvg height="14.2375" id="M119" style="vertical-align:-3.13504pt;width:22.137501px;" version="1.1" viewbox="0 0 22.137501 14.2375" width="22.137501" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.2375)"> <g transform="translate(72,-60.61)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-61.31,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>均衡器。</p><d我v class="partial-carousel-wrapper"> <div class="floats-partial-section"> <div class="floats-partial-content"> <div class="partial-carousel--full-image partial-carousel-d4e0e341a1978d95afa4ea3cedbbd8b3"> <div class="partial-carousel--single-image"> <img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/figures/910824.fig.008.jpg"> <br> <strong></strong> </div> </div> </div> <div class="floats-partial-middle"> <div class="floats-partial-middle--thumbs"> <div class="partial-carousel-dots-d4e0e341a1978d95afa4ea3cedbbd8b3 partial-carousel-thumbnail"> <button aria-label="Slide to " class="partial-carousel-dot"><img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/thumbnails/910824.fig.008_th.jpg"><br><strong></strong></button> </div> </div> <div class="floats-partial-middle--nav"> <div class="partial-carousel-next-prev-d4e0e341a1978d95afa4ea3cedbbd8b3 partial-carousel-next-prev"> <button aria-label="Previous" class="carousel-prev"></button> <button aria-label="Next" class="carousel-next"></button> </div> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图8</gydF4y2Baspan> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/ijap/2012/910824/fig8/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> <table> <tbody> <tr> <td>部分极点PIC-MRC SCBT系统的框图。</td></tgydF4y2Bar> </tbody> </table> </div> </div> </div> </div> <h5 id="sec4.2">4.2。天线选择技术</h5><p>gydF4y2Ba虽然单系统部分<gydF4y2Baa href="#sec4.1">4.1</gydF4y2Baa>可以提供更好的误码性能比传统的单输入单输出(输出)天线系统,单系统的主要缺点是额外的高成本的要求射频(RF)模块。射频模块包括低噪声放大器、混频器、带通滤波器、低通滤波器和模拟-数字转换器。对于单系统中多个射频模块,需要更高的成本和功耗。为了降低成本和权力与单系统,天线选择技术用于提出单系统,也就是说,接收天线的数量大于射频模块。图<gydF4y2Baa href="//www.newsama.com/journals/ijap/2012/910824/fig9/" target="_blank">9</gydF4y2Baa>天线选择技术的框图(AST)只有吗<gydF4y2Basvg height="12.925" id="M120" style="vertical-align:-1.90608pt;width:12.325px;" version="1.1" viewbox="0 0 12.325 12.925" width="12.325" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,12.925)"> <g transform="translate(72,-61.66)"> <text transform="matrix(1,0,0,-1,-71.95,63.61)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>射频模块用于支持<gydF4y2Basvg height="14.2375" id="M121" style="vertical-align:-3.13504pt;width:22.137501px;" version="1.1" viewbox="0 0 22.137501 14.2375" width="22.137501" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.2375)"> <g transform="translate(72,-60.61)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-61.31,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>接收天线。</p><d我v class="partial-carousel-wrapper"> <div class="floats-partial-section"> <div class="floats-partial-content"> <div class="partial-carousel--full-image partial-carousel-34e3042bc0a624c4c88ccfb9bdbc9790"> <div class="partial-carousel--single-image"> <img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/figures/910824.fig.009.jpg"> <br> <strong></strong> </div> </div> </div> <div class="floats-partial-middle"> <div class="floats-partial-middle--thumbs"> <div class="partial-carousel-dots-34e3042bc0a624c4c88ccfb9bdbc9790 partial-carousel-thumbnail"> <button aria-label="Slide to " class="partial-carousel-dot"><img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/thumbnails/910824.fig.009_th.jpg"><br><strong></strong></button> </div> </div> <div class="floats-partial-middle--nav"> <div class="partial-carousel-next-prev-34e3042bc0a624c4c88ccfb9bdbc9790 partial-carousel-next-prev"> <button aria-label="Previous" class="carousel-prev"></button> <button aria-label="Next" class="carousel-next"></button> </div> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图9</gydF4y2Baspan> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/ijap/2012/910824/fig9/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> <table> <tbody> <tr> <td>天线的结构选择<gydF4y2Basvg height="12.925" id="M122" style="vertical-align:-1.90608pt" version="1.1" viewbox="0 0 12.325 12.925" width="12.325" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,12.925)"> <g transform="translate(72,-61.66)"> <text transform="matrix(1,0,0,-1,-71.95,63.61)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>射频模块和<gydF4y2Basvg height="14.2375" id="M123" style="vertical-align:-3.13504pt" version="1.1" viewbox="0 0 22.137501 14.2375" width="22.137501" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.2375)"> <g transform="translate(72,-60.61)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-61.31,60.66)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>接收天线。</td></tgydF4y2Bar> </tbody> </table> </div> </div> </div> </div> <p>AST算法,我们首先使用通道容量算法,也就是说,<gydF4y2Baspan class="equation" id="EEq24"> <svg height="41.4375" id="M124" preserveaspectratio="xMaxYMin" style="vertical-align:-0pt;width:700.9375px;" version="1.1" viewbox="0 0 700.9375 41.4375" width="700.9375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,41.4375)"> <g transform="translate(72,-38.85)"> <text transform="matrix(1,0,0,-1,82.04,51.81)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,91.43,56.82)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,98.13,51.81)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> l</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="15.50372" y="0"> o</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="21.75522" y="0"> g</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,126.14,48.65)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,133.1,51.81)"> <tspan style="font-size: 12.50px; " x="20.200001" y="7.3200002"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="29.58" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="0" y="0"> d</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="6.2515001" y="0"> e</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="11.802832" y="0"> t</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,167.54,48.69)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,179.05,51.81)"> <tspan style="font-size: 12.50px; " x="0" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.54" y="-9.2200003"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,198.93,66.03)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="-0.63" y="8.1199999"> </tgydF4y2Baspan> </text> <g> <path d="m 191.59,54.94 12.21,0" style="fill:none;stroke:#000000;stroke-width:0.82499999;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:10;stroke-opacity:1;stroke-dasharray:none"></path> </g> <text transform="matrix(1,0,0,-1,191.59,41.63)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,198.93,46.14)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="-0.63" y="7.1700001"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,205,51.81)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,214.73,56.98)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="0" y="8.29"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,219.29,51.81)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,229.02,56.98)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,231.74,60.48)"> <tspan style="font-size: 6.25px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,229.02,48.69)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,238.76,44.49)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="11.46" y="-7.3200002"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="26.626139" y="-7.3200002"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="33.990406" y="-7.3200002"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="46.030796" y="-7.3200002"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="52.282295" y="-7.3200002"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="57.483543" y="-7.3200002"> …</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="72.074547" y="-7.3200002"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="77.288292" y="-7.3200002"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,326.69,48.69)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,333.67,51.81)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ,</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="134.2" y="-0.49000001"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="138.36349" y="-0.49000001"> 2</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="144.61501" y="-0.49000001"> 2</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="150.8665" y="-0.49000001"> )</tgydF4y2Baspan> </text> </g> </g> </svg></span>在哪里<gydF4y2Basvg height="17.35" id="M125" style="vertical-align:-3.2316pt;width:17.987499px;" version="1.1" viewbox="0 0 17.987499 17.35" width="17.987499" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,17.35)"> <g transform="translate(72,-58.12)"> <text transform="matrix(1,0,0,-1,-71.95,61.39)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-62.22,66.56)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="0" y="8.3000002"> </tgydF4y2Baspan> </text> </g> </g> </svg>信道矩阵的选择吗<gydF4y2Basvg height="9.9250002" id="M126" style="vertical-align:-0.13794pt;width:4.9875002px;" version="1.1" viewbox="0 0 4.9875002 9.9250002" width="4.9875002" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,9.925)"> <g transform="translate(72,-64.06)"> <text transform="matrix(1,0,0,-1,-71.95,64.25)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>接收天线。接下来,基于信道矩阵的不同组合,AST算法最终选择<gydF4y2Basvg height="12.925" id="M127" style="vertical-align:-1.90608pt;width:12.325px;" version="1.1" viewbox="0 0 12.325 12.925" width="12.325" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,12.925)"> <g transform="translate(72,-61.66)"> <text transform="matrix(1,0,0,-1,-71.95,63.61)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>接收天线,可以提供的最大信道容量<gydF4y2Basvg height="13.3" id="M128" style="vertical-align:-0.15048pt;width:15.8875px;" version="1.1" viewbox="0 0 15.8875 13.3" width="15.8875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.3)"> <g transform="translate(72,-61.36)"> <text transform="matrix(1,0,0,-1,-71.95,61.56)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-62.56,66.56)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>用于提出单系统。</p><h4gydF4y2Baid="simulation-results">5。仿真结果</h4><p>gydF4y2Ba在本节中,仿真结果验证了该部分的性能进行PIC-MRC系统,和表<gydF4y2Baa href="//www.newsama.com/journals/ijap/2012/910824/tab1/" target="_blank">1</gydF4y2Baa>系统参数设置。为模拟假设完美的信道状态信息。</p><d我v class="floats-partial-section partial-other-wrapper" data-section="tab1"> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">表1</gydF4y2Baspan> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/ijap/2012/910824/tab1/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> 系统仿真参数。</d我v> <a class="table-thumb-overlay" href="//www.newsama.com/journals/ijap/2012/910824/tab1" target="_blank" aria-label="View full page"></a> </div> </div> <p>图<gydF4y2Baa href="//www.newsama.com/journals/ijap/2012/910824/fig10/" target="_blank">10</gydF4y2Baa>显示了迭代MMSE判决反馈均衡器的误码性能和迭代MF-based判决反馈均衡器。迭代的数量是2,4,6次。如图<gydF4y2Baa href="//www.newsama.com/journals/ijap/2012/910824/fig10/" target="_blank">10</gydF4y2Baa>,系统性能更好的迭代的数量增加。此外,迭代数是2,迭代MMSE FDE的性能可以方法MMSE均衡器。在迭代数量是4和6,迭代MMSE FDE的性能提高约1 dB和1.5 dB比MMSE均衡器<gydF4y2Basvg height="14.5" id="M130" style="vertical-align:-0.3135pt;width:103.8875px;" version="1.1" viewbox="0 0 103.8875 14.5" width="103.8875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.5)"> <g transform="translate(72,-60.4)"> <text transform="matrix(1,0,0,-1,-71.95,60.76)"> <tspan style="font-size: 12.50px; " x="0" y="0"> B</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="8.3395014" y="0"> E</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="15.978834" y="0"> R</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="27.781666" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="39.822056" y="0"> 4</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="48.84922" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="59.626808" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="65.878304" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,0.19,65.93)"> <tspan style="font-size: 8.75px; " x="0" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="5.99512" y="0"> 5</tgydF4y2Baspan> </text> </g> </g> </svg>,分别。当迭代的数量是6,迭代MMSE DFE的性能比迭代MF-based DFE接收机约1.4 dB<gydF4y2Basvg height="14.5" id="M131" style="vertical-align:-0.3135pt;width:103.8875px;" version="1.1" viewbox="0 0 103.8875 14.5" width="103.8875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.5)"> <g transform="translate(72,-60.4)"> <text transform="matrix(1,0,0,-1,-71.95,60.76)"> <tspan style="font-size: 12.50px; " x="0" y="0"> B</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="8.3395014" y="0"> E</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="15.978834" y="0"> R</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="27.781666" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="39.822056" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="48.84922" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="59.626808" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="65.878304" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,0.19,65.93)"> <tspan style="font-size: 8.75px; " x="0" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="5.99512" y="0"> 5</tgydF4y2Baspan> </text> </g> </g> </svg>。</p><d我v class="partial-carousel-wrapper"> <div class="floats-partial-section"> <div class="floats-partial-content"> <div class="partial-carousel--full-image partial-carousel-4e937e38e0df2ad5fcb1ceffdf30635e"> <div class="partial-carousel--single-image"> <img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/figures/910824.fig.0010.jpg"> <br> <strong></strong> </div> </div> </div> <div class="floats-partial-middle"> <div class="floats-partial-middle--thumbs"> <div class="partial-carousel-dots-4e937e38e0df2ad5fcb1ceffdf30635e partial-carousel-thumbnail"> <button aria-label="Slide to " class="partial-carousel-dot"><img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/thumbnails/910824.fig.0010_th.jpg"><br><strong></strong></button> </div> </div> <div class="floats-partial-middle--nav"> <div class="partial-carousel-next-prev-4e937e38e0df2ad5fcb1ceffdf30635e partial-carousel-next-prev"> <button aria-label="Previous" class="carousel-prev"></button> <button aria-label="Next" class="carousel-next"></button> </div> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图10</gydF4y2Baspan> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/ijap/2012/910824/fig10/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> <table> <tbody> <tr> <td>迭代MMSE / MF-based DFE的误码性能。</td></tgydF4y2Bar> </tbody> </table> </div> </div> </div> </div> <p>对部分PIC-MRC SCBT系统,窗口大小<gydF4y2Basvg height="10.325" id="M132" style="vertical-align:-0.0pt;width:17.237499px;" version="1.1" viewbox="0 0 17.237499 10.325" width="17.237499" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.325)"> <g transform="translate(72,-63.74)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>在(<gydF4y2Baa href="#EEq20">18</gydF4y2Baa>)- (<gydF4y2Baa href="#EEq22">20.</gydF4y2Baa>)可以选择的仿真结果如图所示<gydF4y2Baa href="//www.newsama.com/journals/ijap/2012/910824/fig11/" target="_blank">11</gydF4y2Baa>。很显然,当<gydF4y2Basvg height="10.325" id="M133" style="vertical-align:-0.0pt;width:17.237499px;" version="1.1" viewbox="0 0 17.237499 10.325" width="17.237499" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.325)"> <g transform="translate(72,-63.74)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>大于16在不同<gydF4y2Basvg height="14.75" id="M134" style="vertical-align:-3.25793pt;width:40.787498px;" version="1.1" viewbox="0 0 40.787498 14.75" width="40.787498" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.75)"> <g transform="translate(72,-60.2)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-63.02,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-58.41,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="3.4758339" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-44.3,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> </g> </g> </svg>,性能将实现完整的PIC-MRC系统的约束。因此,在结果的基础上,窗口的大小<gydF4y2Basvg height="11.0375" id="M135" style="vertical-align:-0.17555pt;width:50.849998px;" version="1.1" viewbox="0 0 50.849998 11.0375" width="50.849998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.0375)"> <g transform="translate(72,-63.17)"> <text transform="matrix(1,0,0,-1,-71.95,63.4)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="16.028847" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="28.069235" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="34.320736" y="0"> 6</tgydF4y2Baspan> </text> </g> </g> </svg>将用于以下模拟。</p><d我v class="partial-carousel-wrapper"> <div class="floats-partial-section"> <div class="floats-partial-content"> <div class="partial-carousel--full-image partial-carousel-699cbe23763851cba19bd0e494db04a7"> <div class="partial-carousel--single-image"> <img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/figures/910824.fig.0011.jpg"> <br> <strong></strong> </div> </div> </div> <div class="floats-partial-middle"> <div class="floats-partial-middle--thumbs"> <div class="partial-carousel-dots-699cbe23763851cba19bd0e494db04a7 partial-carousel-thumbnail"> <button aria-label="Slide to " class="partial-carousel-dot"><img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/thumbnails/910824.fig.0011_th.jpg"><br><strong></strong></button> </div> </div> <div class="floats-partial-middle--nav"> <div class="partial-carousel-next-prev-699cbe23763851cba19bd0e494db04a7 partial-carousel-next-prev"> <button aria-label="Previous" class="carousel-prev"></button> <button aria-label="Next" class="carousel-next"></button> </div> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图11</gydF4y2Baspan> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/ijap/2012/910824/fig11/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> <table> <tbody> <tr> <td>误码性能部分PIC-MRC在不同窗口大小<gydF4y2Basvg height="10.325" id="M136" style="vertical-align:-0.0pt" version="1.1" viewbox="0 0 17.237499 10.325" width="17.237499" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.325)"> <g transform="translate(72,-63.74)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>SCBT系统。</td></tgydF4y2Bar> </tbody> </table> </div> </div> </div> </div> <p>图<gydF4y2Baa href="//www.newsama.com/journals/ijap/2012/910824/fig12/" target="_blank">12</gydF4y2Baa>显示图片的误码性能和部分PIC-MRC SCBT系统。虚线是最好的性能约束的图片和部分PIC-MRC,分别。注意,绑定性能评估的假设完美的信号检测用于图片取消。接下来,我们可以看到,提出部分PIC-MRC方案的性能优于传统图片方案1 dB<gydF4y2Basvg height="14.3375" id="M137" style="vertical-align:-0.17555pt;width:79.125px;" version="1.1" viewbox="0 0 79.125 14.3375" width="79.125" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.3375)"> <g transform="translate(72,-60.53)"> <text transform="matrix(1,0,0,-1,-71.95,60.76)"> <tspan style="font-size: 12.50px; " x="0" y="0"> B</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="8.3395014" y="0"> E</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="15.978834" y="0"> R</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="27.781666" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="39.822056" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="46.073555" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-19.62,65.93)"> <tspan style="font-size: 8.75px; " x="0" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="5.99512" y="0"> 5</tgydF4y2Baspan> </text> </g> </g> </svg>,但是性能比迭代MMSE DFE低<gydF4y2Basvg height="13.575" id="M138" style="vertical-align:-2.21957pt;width:48.799999px;" version="1.1" viewbox="0 0 48.799999 13.575" width="48.799999" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.575)"> <g transform="translate(72,-61.14)"> <text transform="matrix(1,0,0,-1,-71.95,63.4)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="16.478954" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="28.519342" y="0"> 6</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="34.770844" y="0"> )</tgydF4y2Baspan> </text> </g> </g> </svg>约为0.6分贝。</p><d我v class="partial-carousel-wrapper"> <div class="floats-partial-section"> <div class="floats-partial-content"> <div class="partial-carousel--full-image partial-carousel-b435243a73f593d38edd6b63bac041ad"> <div class="partial-carousel--single-image"> <img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/figures/910824.fig.0012.jpg"> <br> <strong></strong> </div> </div> </div> <div class="floats-partial-middle"> <div class="floats-partial-middle--thumbs"> <div class="partial-carousel-dots-b435243a73f593d38edd6b63bac041ad partial-carousel-thumbnail"> <button aria-label="Slide to " class="partial-carousel-dot"><img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/thumbnails/910824.fig.0012_th.jpg"><br><strong></strong></button> </div> </div> <div class="floats-partial-middle--nav"> <div class="partial-carousel-next-prev-b435243a73f593d38edd6b63bac041ad partial-carousel-next-prev"> <button aria-label="Previous" class="carousel-prev"></button> <button aria-label="Next" class="carousel-next"></button> </div> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图12</gydF4y2Baspan> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/ijap/2012/910824/fig12/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> <table> <tbody> <tr> <td>误码性能的图片,部分PIC-MRC MMSE-DFE SCBT系统。</td></tgydF4y2Bar> </tbody> </table> </div> </div> </div> </div> <p>接下来,误码性能评估的迭代局部PIC-MRC和MMSE DFE系统。如图<gydF4y2Baa href="//www.newsama.com/journals/ijap/2012/910824/fig13/" target="_blank">13</gydF4y2Baa>更多的迭代之后,提出了部分PIC-MRC系统的性能明显增加了。2次迭代后,表现比0.6 dB迭代MMSE DFE系统<gydF4y2Basvg height="14.4625" id="M139" style="vertical-align:-0.3135pt;width:114.3125px;" version="1.1" viewbox="0 0 114.3125 14.4625" width="114.3125" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.4625)"> <g transform="translate(72,-60.43)"> <text transform="matrix(1,0,0,-1,-71.95,60.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> B</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="8.3395014" y="0"> E</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="15.978834" y="0"> R</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="27.781666" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="39.822056" y="0"> 4</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="53.025223" y="0"> ×</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="67.966309" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="74.217812" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,8.53,65.96)"> <tspan style="font-size: 8.75px; " x="0" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="5.99512" y="0"> 6</tgydF4y2Baspan> </text> </g> </g> </svg>,然后再次性能提高约0.2 dB迭代。从以上仿真结果,提出了迭代局部PIC-MRC SCBT系统方案可以获得更好的误码性能和提供低复杂度计算。图的计算复杂性<gydF4y2Baa href="//www.newsama.com/journals/ijap/2012/910824/fig13/" target="_blank">13</gydF4y2Baa>,复杂的迭代MMSE DFE乘法<gydF4y2Basvg height="13.575" id="M140" style="vertical-align:-2.21957pt;width:48.799999px;" version="1.1" viewbox="0 0 48.799999 13.575" width="48.799999" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.575)"> <g transform="translate(72,-61.14)"> <text transform="matrix(1,0,0,-1,-71.95,63.4)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="16.478954" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="28.519342" y="0"> 6</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="34.770844" y="0"> )</tgydF4y2Baspan> </text> </g> </g> </svg>计算有关<gydF4y2Basvg height="14.75" id="M141" style="vertical-align:-3.17262pt;width:152.575px;" version="1.1" viewbox="0 0 152.575 14.75" width="152.575" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.75)"> <g transform="translate(72,-60.2)"> <text transform="matrix(1,0,0,-1,-71.95,63.41)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="9.1521959" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="13.315695" y="0"> 3</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="19.567196" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="28.419319" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="42.260139" y="0"> l</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="45.735973" y="0"> o</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="51.987473" y="0"> g</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-9.53,60.25)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-4.66,63.41)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="13.415719" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="24.755939" y="0"> 7</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="31.007441" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="41.647491" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="50.499619" y="0"> )</tgydF4y2Baspan> </text> </g> </g> </svg>由于迭代DFE-MMSE重量操作。接下来,提出部分PIC-MRC计划(<gydF4y2Baa href="#EEq21">19</gydF4y2Baa>)- (<gydF4y2Baa href="#EEq22">20.</gydF4y2Baa>),它涉及的优势<gydF4y2Basvg height="13.85" id="M142" style="vertical-align:-0.17555pt;width:8.8125px;" version="1.1" viewbox="0 0 8.8125 13.85" width="8.8125" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.85)"> <g transform="translate(72,-60.92)"> <text transform="matrix(1,0,0,-1,-64.07,63.97)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ̃</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="-7.8800001" y="2.8199999"> </tgydF4y2Baspan> </text> </g> </g> </svg>固定值(即。QPSK符号:<gydF4y2Basvg height="13.6125" id="M143" style="vertical-align:-2.34499pt;width:43.3125px;" version="1.1" viewbox="0 0 43.3125 13.6125" width="43.3125" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.6125)"> <g transform="translate(72,-61.11)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> ±</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="8.5645552" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="17.591721" y="0"> ±</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="28.931942" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>)。因此,它不需要复杂的乘法运算的并行干扰重建。此外,复杂的乘法提出部分PIC-MRC<gydF4y2Basvg height="13.45" id="M144" style="vertical-align:-2.21957pt;width:48.799999px;" version="1.1" viewbox="0 0 48.799999 13.45" width="48.799999" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.45)"> <g transform="translate(72,-61.24)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="4.1634989" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="16.478954" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="28.519342" y="0"> 3</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="34.770844" y="0"> )</tgydF4y2Baspan> </text> </g> </g> </svg>可以计算<gydF4y2Basvg height="14.75" id="M145" style="vertical-align:-3.17262pt;width:182.6875px;" version="1.1" viewbox="0 0 182.6875 14.75" width="182.6875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.75)"> <g transform="translate(72,-60.2)"> <text transform="matrix(1,0,0,-1,-71.95,63.41)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="9.1521959" y="0"> (</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="13.315695" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="19.567196" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="33.408016" y="0"> l</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="36.88385" y="0"> o</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="43.135349" y="0"> g</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-18.39,60.25)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 2</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-13.51,63.41)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="13.415719" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="24.755939" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="31.007441" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="44.423161" y="0"> +</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="55.763378" y="0"> 2</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="62.014881" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="74.580399" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="83.432518" y="0"> )</tgydF4y2Baspan> </text> </g> </g> </svg>。例如,考虑图的迭代MMSE DFE系统<gydF4y2Baa href="//www.newsama.com/journals/ijap/2012/910824/fig13/" target="_blank">13</gydF4y2Baa>与<gydF4y2Basvg height="11.0375" id="M146" style="vertical-align:-0.17555pt;width:38.387501px;" version="1.1" viewbox="0 0 38.387501 11.0375" width="38.387501" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.0375)"> <g transform="translate(72,-63.17)"> <text transform="matrix(1,0,0,-1,-71.95,63.4)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.315455" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="24.355844" y="0"> 6</tgydF4y2Baspan> </text> </g> </g> </svg>和<gydF4y2Basvg height="11.0375" id="M147" style="vertical-align:-0.17555pt;width:48.4375px;" version="1.1" viewbox="0 0 48.4375 11.0375" width="48.4375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.0375)"> <g transform="translate(72,-63.17)"> <text transform="matrix(1,0,0,-1,-71.95,63.4)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="14.103384" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="26.143772" y="0"> 6</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="32.395271" y="0"> 4</tgydF4y2Baspan> </text> </g> </g> </svg>,复杂的乘法的数量约为9600。并考虑该部分PIC-MRC系统图<gydF4y2Baa href="//www.newsama.com/journals/ijap/2012/910824/fig13/" target="_blank">13</gydF4y2Baa>与<gydF4y2Basvg height="10.9125" id="M148" style="vertical-align:-0.17555pt;width:38.387501px;" version="1.1" viewbox="0 0 38.387501 10.9125" width="38.387501" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.9125)"> <g transform="translate(72,-63.27)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.315455" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="24.355844" y="0"> 3</tgydF4y2Baspan> </text> </g> </g> </svg>,<gydF4y2Basvg height="11.0375" id="M149" style="vertical-align:-0.17555pt;width:50.849998px;" version="1.1" viewbox="0 0 50.849998 11.0375" width="50.849998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.0375)"> <g transform="translate(72,-63.17)"> <text transform="matrix(1,0,0,-1,-71.95,63.4)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="16.028847" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="28.069235" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="34.320736" y="0"> 6</tgydF4y2Baspan> </text> </g> </g> </svg>,<gydF4y2Basvg height="11.0375" id="M150" style="vertical-align:-0.17555pt;width:48.4375px;" version="1.1" viewbox="0 0 48.4375 11.0375" width="48.4375" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,11.0375)"> <g transform="translate(72,-63.17)"> <text transform="matrix(1,0,0,-1,-71.95,63.4)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="14.103384" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="26.143772" y="0"> 6</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="32.395271" y="0"> 4</tgydF4y2Baspan> </text> </g> </g> </svg>,复杂的乘法的数量约为992。很明显,该方案与较低的窗口大小<gydF4y2Basvg height="10.325" id="M151" style="vertical-align:-0.0pt;width:17.237499px;" version="1.1" viewbox="0 0 17.237499 10.325" width="17.237499" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.325)"> <g transform="translate(72,-63.74)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>和迭代规模<gydF4y2Basvg height="10.325" id="M152" style="vertical-align:-0.0pt;width:11.1875px;" version="1.1" viewbox="0 0 11.1875 10.325" width="11.1875" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,10.325)"> <g transform="translate(72,-63.74)"> <text transform="matrix(1,0,0,-1,-71.95,63.79)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>可以提供低计算复杂度的优点。</p><d我v class="partial-carousel-wrapper"> <div class="floats-partial-section"> <div class="floats-partial-content"> <div class="partial-carousel--full-image partial-carousel-92c45b151f42da55aecbb3183e40d6ce"> <div class="partial-carousel--single-image"> <img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/figures/910824.fig.0013.jpg"> <br> <strong></strong> </div> </div> </div> <div class="floats-partial-middle"> <div class="floats-partial-middle--thumbs"> <div class="partial-carousel-dots-92c45b151f42da55aecbb3183e40d6ce partial-carousel-thumbnail"> <button aria-label="Slide to " class="partial-carousel-dot"><img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/thumbnails/910824.fig.0013_th.jpg"><br><strong></strong></button> </div> </div> <div class="floats-partial-middle--nav"> <div class="partial-carousel-next-prev-92c45b151f42da55aecbb3183e40d6ce partial-carousel-next-prev"> <button aria-label="Previous" class="carousel-prev"></button> <button aria-label="Next" class="carousel-next"></button> </div> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图13</gydF4y2Baspan> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/ijap/2012/910824/fig13/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> <table> <tbody> <tr> <td>误码性能的迭代局部PIC-MRC和MMSE-DFE SCBT系统。</td></tgydF4y2Bar> </tbody> </table> </div> </div> </div> </div> <p>最后,提出了系统扩展到多个天线系统。图<gydF4y2Baa href="//www.newsama.com/journals/ijap/2012/910824/fig14/" target="_blank">14</gydF4y2Baa>显示该部分PIC-MRC单系统的误码性能与接收天线数量从2到4。有更多的接收天线,明显显示了误码性能更好。和图<gydF4y2Baa href="//www.newsama.com/journals/ijap/2012/910824/fig15/" target="_blank">15</gydF4y2Baa>是该AST的误码性能技术部分PIC-MRC单系统。假设射频模块<gydF4y2Basvg height="12.925" id="M153" style="vertical-align:-1.90608pt;width:12.325px;" version="1.1" viewbox="0 0 12.325 12.925" width="12.325" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,12.925)"> <g transform="translate(72,-61.66)"> <text transform="matrix(1,0,0,-1,-71.95,63.61)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> </g> </g> </svg>是一个和总接收天线数量从2到4。如果天线数等于2,性能提高约3 dB<gydF4y2Basvg height="14.3375" id="M154" style="vertical-align:-0.17555pt;width:79.125px;" version="1.1" viewbox="0 0 79.125 14.3375" width="79.125" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.3375)"> <g transform="translate(72,-60.53)"> <text transform="matrix(1,0,0,-1,-71.95,60.76)"> <tspan style="font-size: 12.50px; " x="0" y="0"> B</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="8.3395014" y="0"> E</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="15.978834" y="0"> R</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="27.781666" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="39.822056" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="46.073555" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-19.62,65.93)"> <tspan style="font-size: 8.75px; " x="0" y="0"> −</tgydF4y2Baspan> <tspan style="font-size: 8.75px; " x="5.99512" y="0"> 5</tgydF4y2Baspan> </text> </g> </g> </svg>比输出系统。接收天线数等于4时,性能几乎达到了极点系统与一个标记这些天线和两个接收天线<gydF4y2Basvg height="14.8625" id="M155" style="vertical-align:-3.25793pt;width:96.650002px;" version="1.1" viewbox="0 0 96.650002 14.8625" width="96.650002" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.8625)"> <g transform="translate(72,-60.11)"> <text transform="matrix(1,0,0,-1,-71.95,63.41)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-63.02,60.28)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-58.41,63.41)"> <tspan style="font-size: 12.50px; " x="0" y="0"> /</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="3.4758339" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-44.3,60.28)"> <tspan style="font-size: 8.75px; " x="0" y="0"> 0</tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-35.95,63.41)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 1</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="18.279387" y="0"> 4</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="26.618887" y="0"> d</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="32.870388" y="0"> B</tgydF4y2Baspan> </text> </g> </g> </svg>。注意,该AST系统低成本和权力的好处是由于射频模块<gydF4y2Basvg height="13.0625" id="M156" style="vertical-align:-1.90608pt;width:39.537498px;" version="1.1" viewbox="0 0 39.537498 13.0625" width="39.537498" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.0625)"> <g transform="translate(72,-61.55)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="13.228174" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="25.268562" y="0"> 1</tgydF4y2Baspan> </text> </g> </g> </svg>和接收天线数<gydF4y2Basvg height="14.6" id="M157" style="vertical-align:-3.13504pt;width:49.349998px;" version="1.1" viewbox="0 0 49.349998 14.6" width="49.349998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.6)"> <g transform="translate(72,-60.32)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-61.31,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-50.86,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 4</tgydF4y2Baspan> </text> </g> </g> </svg>,射频模块的方案小于RF模块<gydF4y2Basvg height="13.0625" id="M158" style="vertical-align:-1.90608pt;width:39.537498px;" version="1.1" viewbox="0 0 39.537498 13.0625" width="39.537498" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.0625)"> <g transform="translate(72,-61.55)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="13.228174" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="25.268562" y="0"> 2</tgydF4y2Baspan> </text> </g> </g> </svg>单系统。值得注意的是该单AST PIC-MRC系统算法<gydF4y2Basvg height="13.0625" id="M159" style="vertical-align:-1.90608pt;width:39.537498px;" version="1.1" viewbox="0 0 39.537498 13.0625" width="39.537498" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.0625)"> <g transform="translate(72,-61.55)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="13.228174" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="25.268562" y="0"> 1</tgydF4y2Baspan> </text> </g> </g> </svg>和<gydF4y2Basvg height="14.6" id="M160" style="vertical-align:-3.13504pt;width:49.349998px;" version="1.1" viewbox="0 0 49.349998 14.6" width="49.349998" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,14.6)"> <g transform="translate(72,-60.32)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-61.31,60.37)"> <tspan style="font-size: 8.75px; " x="0" y="0"> </tgydF4y2Baspan> </text> <text transform="matrix(1,0,0,-1,-50.86,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="12.027886" y="0"> 4</tgydF4y2Baspan> </text> </g> </g> </svg>场景的射频和多个输出系统与单天线的选择。因此,在这种情况下,该AST单系统仍然是一个输出系统与多个天线扩展。接下来,如图<gydF4y2Baa href="//www.newsama.com/journals/ijap/2012/910824/fig15/" target="_blank">15</gydF4y2Baa>极点,该AST系统可以单系统的误码性能的方法<gydF4y2Basvg height="13.0625" id="M161" style="vertical-align:-1.90608pt;width:39.537498px;" version="1.1" viewbox="0 0 39.537498 13.0625" width="39.537498" xmlns="http://www.w3.org/2000/svg"> <g transform="matrix(1.25,0,0,-1.25,0,13.0625)"> <g transform="translate(72,-61.55)"> <text transform="matrix(1,0,0,-1,-71.95,63.5)"> <tspan style="font-size: 12.50px; " x="0" y="0"> </tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="13.228174" y="0"> =</tgydF4y2Baspan> <tspan style="font-size: 12.50px; " x="25.268562" y="0"> 2</tgydF4y2Baspan> </text> </g> </g> </svg>(两个RFs)。因此,拟议的AST单系统包括多个天线的柔性结构的优势和RFs选择。</p><d我v class="partial-carousel-wrapper"> <div class="floats-partial-section"> <div class="floats-partial-content"> <div class="partial-carousel--full-image partial-carousel-f4f9f54cd9d4816cc1dccc33a35873c2"> <div class="partial-carousel--single-image"> <img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/figures/910824.fig.0014.jpg"> <br> <strong></strong> </div> </div> </div> <div class="floats-partial-middle"> <div class="floats-partial-middle--thumbs"> <div class="partial-carousel-dots-f4f9f54cd9d4816cc1dccc33a35873c2 partial-carousel-thumbnail"> <button aria-label="Slide to " class="partial-carousel-dot"><img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/thumbnails/910824.fig.0014_th.jpg"><br><strong></strong></button> </div> </div> <div class="floats-partial-middle--nav"> <div class="partial-carousel-next-prev-f4f9f54cd9d4816cc1dccc33a35873c2 partial-carousel-next-prev"> <button aria-label="Previous" class="carousel-prev"></button> <button aria-label="Next" class="carousel-next"></button> </div> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图14</gydF4y2Baspan> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/ijap/2012/910824/fig14/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> <table> <tbody> <tr> <td>部分PIC-MRC单系统的误码性能。</td></tgydF4y2Bar> </tbody> </table> </div> </div> </div> </div> <div class="partial-carousel-wrapper"> <div class="floats-partial-section"> <div class="floats-partial-content"> <div class="partial-carousel--full-image partial-carousel-d55b02ac555abf88ecb6f7177d2a99bb"> <div class="partial-carousel--single-image"> <img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/figures/910824.fig.0015.jpg"> <br> <strong></strong> </div> </div> </div> <div class="floats-partial-middle"> <div class="floats-partial-middle--thumbs"> <div class="partial-carousel-dots-d55b02ac555abf88ecb6f7177d2a99bb partial-carousel-thumbnail"> <button aria-label="Slide to " class="partial-carousel-dot"><img loading="lazy" alt="" src="https://static.hindawi.com/articles/ijap/volume-2012/910824/thumbnails/910824.fig.0015_th.jpg"><br><strong></strong></button> </div> </div> <div class="floats-partial-middle--nav"> <div class="partial-carousel-next-prev-d55b02ac555abf88ecb6f7177d2a99bb partial-carousel-next-prev"> <button aria-label="Previous" class="carousel-prev"></button> <button aria-label="Next" class="carousel-next"></button> </div> </div> </div> <div class="floats-partial-footer"> <div class="floats-partial-caption"> <span class="caption-text">图15</gydF4y2Baspan> <a aria-label="View full page" class="caption-partial-url" href="//www.newsama.com/journals/ijap/2012/910824/fig15/" title="" target="_blank"></a> </div> <div class="floats-partial-caption-text"> <table> <tbody> <tr> <td>偏PIC-MRC天线选择技术的误码性能。</td></tgydF4y2Bar> </tbody> </table> </div> </div> </div> </div> <h4 id="conclusions">6。结论</h4><p>gydF4y2Ba部分PIC-MRC系统提出了SCBT系统,这是为了实现更好的误码性能和低复杂性在接收机端。MRC的援助计划,该部分图片技术可以有效地执行干扰消除和获得的好处时间分集增益,从而取得更好的误码性能。它还可以扩展到多个天线结构更好的误码性能。AST将介绍选择的多样性,减少单系统的成本和功耗。仿真结果证实,该部分AST PIC-MRC单系统方案可以提供健壮的性能在多径衰落信道环境。</p><h4我d="acknowledgments">确认</h4><p>gydF4y2Ba作者要感谢美国国家科学委员会中华民国,台湾在经济上支持这号合同下的研究。NSC 100 - 2220 - e - 155 - 006和101 NSC - 2220 - e - 155 - 006。作者还要感谢编辑和匿名评论者对他们有用的评论和建议在提高文章的质量。</p></d我v> </div> <div class="ArticleReferences_xmlContent__p_40j"> <h4 class="ArticleReferences_references__GH2t_" id="references">引用</h4><olclgydF4y2Baass="ArticleReferences_orderedReferences__mJr9M"> <li class="ArticleReferences_articleReference__ouEuh" id="B1"> <div class="referenceContent"> <p class="referenceText">王z、x Ma和g . b . 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