基于裂缝波导的车地无线通信系统性能指标测试分析  

Test and Analysis of the Performance Indicators for Train/Ground Wireless Communication System Based on Leaky Waveguide

作　　者：赵朝娜 郑国莘[1] 徐靖 尹柯伟 ZHAO Chaona;ZHENG Guoxin;XU Jing;YIN Kewei(Key Laboratory of Specialty Fiber Optics and Optical Access Networks,Joint International Research Laboratory of Specialty Fiber Optics and Advanced Comunication,Shanghai Institute for Advanced Communication and Data Science,Shanghai University,200072,Shanghai,China)

机构地区：[1]上海大学特种光纤与光接入网重点实验室特种光纤与先进通信国际合作联合实验室上海先进通信与数据科学研究院,上海200072 [2]中电科微波通信(上海)股份有限公司,上海201802

出　　处：《城市轨道交通研究》2019年第1期44-49,共6页Urban Mass Transit

基　　金：国家自然科学基金面上项目(61571282)

摘　　要：车地无线通信基于LTE(长期演进)技术的无线传输媒介主要是泄漏电缆、自由天线及裂缝波导。裂缝波导是一种抗干扰性更强、信号覆盖均匀的无线传输介质。采用HFSS软件仿真裂缝波导的耦合强度等参数,并利用近场测试系统测试裂缝波导的耦合强度,从而得到波导接收天线最佳接收高度。通过裂缝波导、波导接收天线、LTE基站和车载终端测试车地通信系统的吞吐量、丢包和延时等性能指标,验证了基于裂缝波导的车地通信系统在CBTC(基于通信的列车控制)中的适用性。The wireless transmission media of train/ground wireless communication combined with LTE( long term evolution)technology is mainly the leaky cable,free antenna and leaky waveguide. The last one is a wireless transmission medium featuring stronger anti-interference and uniform signal coverage.In this paper,the coupling strength of leaky waveguide is simulated by HFSS software,the coupling strength parameters are measured by the near field testing system,the optimum antenna reception height is finally obtained. Parameters like the throughput,packet loss and delay of the train/ground communication system are measured by building a test network with the leaky waveguide,the receiving antenna,the LTE base station and vehicle-mounted facilities. It is concluded that the leaky waveguide used in train/ground wireless communication system is feasible in CBTC application.

关 键 词：轨道交通 裂缝波导 LTE技术 车地通信 

分 类 号：TN928[电子电信—通信与信息系统] U285.211[电子电信—信息与通信工程]