TY - JOUR A2 - Salous，萨纳AU - 赵某，金盟盟 - 雄，雷盟 - 他，丹萍AU - 杜，张家栋PY - 2018 DA - 2018年8月1日TI - 轨道交通隧道方案的信道特性基于雷-Tracing模拟器SP - 9284639 VL - 2018 AB - 隧道方案是一个主要的铁路通信场景。在本文中，隧道场景具有不同的载波频率的无线电信道特性，发射器（Tx）和接收机（Rx），和横截面之间的不同距离进行了仿真用光线跟踪工具。关键参数诸如路径损耗，莱斯K系数，均方根（RMS）延迟扩展，和角展了研究。According to the results, higher frequencies introduce larger path loss and the presence of the vehicle body increases the path loss by about 35 dB in the scenario; at the same time it will also cause the fluctuation and instability of the path loss. Besides, the influence of reflections from the side walls is significant on radio propagation. The channel experiences more severe fading in a narrow tunnel compared with others. SN - 1530-8669 UR - https://doi.org/10.1155/2018/9284639 DO - 10.1155/2018/9284639 JF - Wireless Communications and Mobile Computing PB - Hindawi KW - ER -