超高速列车车地无线通信系统性能分析  

System performance analysis on train-ground wireless communication for the ultra high-speed train

作　　者：王凯[1] 刘留[1] 于蒙 韩柏涛[1] 周涛[1] 刘盛尧 WANG Kai;LIU Liu;YU Meng;HAN Botao;ZHOU Tao;LIU Shengyao(School of Electronic and Information Engineering,Beijing Jiaotong University,Beijing 100044,China;China Railway Zhengzhou Group Co.,Ltd.,Telecommunication Depot,Zhengzhou 450052,China;Railway Engineering Consulting Group Co.,Ltd.,Beijing 100055,China)

机构地区：[1]北京交通大学电子信息工程学院,北京100044 [2]郑州局集团公司电务部,郑州450052 [3]中铁工程设计咨询集团有限公司,北京100055

出　　处：《北京交通大学学报》2021年第4期117-126,共10页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

基　　金：中国铁路郑州集团有限公司2021年科技研究开发计划(2021D7);北京市自然科学基金-丰台轨道交通前沿研究联合基金资助(L202012)。

摘　　要：为了解现有通信系统在超高速移动场景下的性能,利用系统级仿真平台分析在超高速(600 km/h)磁悬浮列车场景下的LTE-A(Long Term Evolution-Advanced)、5G两种网络系统性能.研究两种通信系统下基于位置的车地通信误码率(Block Error Ratio,BLER)、频谱效率(Spectral Efficiency,SE)以及吞吐量仿真结果,并对网络性能进一步分析.仿真结果表明,LTE-A与5G系统在频谱效率和吞吐量方面可以较好地支持超高速磁悬浮列车列控业务通信,但随着磁悬浮列车远离基站,BLER逐渐上升,最终达到10-1以上,无法有效保障车地通信质量.In order to understand the performance of the exist communication systems in the ultra-high speed scenarios,the system level simulator is used to evaluate system performance of LTE-A(Long Term Evolution-Advanced)and 5G networks for the maglev in ultra-high speed scenarios(600 km/h)in this paper.Based on two typical communication systems,position-based results of BLock Error Ratio(BLER),Spectral Efficiency(SE)and throughput are obtained and the performance of the networks is analyzed.Simulation results show that LTE-A and 5G system present satisfying performance results for the train-ground wireless communication in the ultra-high speed maglev scenarios in terms of SE and throughput,but with the maglev train far away from the base station,BLER gradually rises,and finally reaches more than 10-1,which can not effectively guarantee the quality of train ground communication.

关 键 词：超高速磁悬浮列车 车地通信 误码率 频谱效率 吞吐量 

分 类 号：U285[交通运输工程—交通信息工程及控制]