铁路编组站GSM-R分层覆盖系统及其干扰共存分析  

Analysis on Interference Co-existence of GSM-R Hierarchical Coverage System in Marshalling Yards

作　　者：杨焱[1] 钟章队[1] 

机构地区：[1]北京交通大学轨道交通控制与安全国家重点实验室,北京100044

出　　处：《铁道学报》2014年第12期40-45,共6页Journal of the China Railway Society

基　　金：轨道交通控制与安全国家重点实验室自主课题(RCS2008ZT004);铁道部科技研究开发计划(2010X002-A)

摘　　要：GSM-R技术在高速铁路领域取得了巨大的成功,但是在铁路编组站的应用方面一直进展缓慢,主要问题在于,编组站属于典型高强度、高密度的通信热点区域,有限的频率资源很难同时满足高速铁路、编组站的容量需求,系统间干扰又导致系统容量进一步下降.本文分析铁路编组站GSM-R系统容量需求及其流量统计特性,提出一种基于GSM-R分层结构的分布式天线覆盖系统,能够有效提高编组站业务系统容量并满足系统间干扰共存的需要.仿真结果表明,该系统具有更好的无线覆盖特性,系统干扰隔离度指标邻信道干扰比ACIR下降约10～15 dB,有利于在铁路编组站区域实现多个GSM-R系统共存.The GSM-R （GSM for Railway） technology has achieved great success in the field of high-speed rail-ways,but its application progress in marshalling yards remains very slow all the time.The main problem is that marshalling yards belong to typcal hot-spot commumication regions with high strength and high density traffic loads where limited frequency sources are hard to meet the capacity needs of marshalling yards and high-speed railways simultaneously and inter-system interference also declines the system capacity.In this paper,the capacity requirements and characteristics of traffic statistics of GSM-R systems in marshalling yards were analyzed.The hierarchical GSM-R based distributed antenna coverage system was fut forward to effectively improve the system capacity and meet the weeds of the co-existence of inter-system interference.Simulation results show that the hierarchical antenna system has better characteristics of wireless coverage,and the system interference isolation parameter ACIR（Adjacent Channel Interference Ratio） is significantly declined by about 10～15clB,which contributes to co-existence of multiple GSM-R systems in marshalling yards.

关 键 词：GSM-R 分层网络结构 分布式天线系统 干扰共存 铁路编组站 

分 类 号：U285[交通运输工程—交通信息工程及控制]