滤波器对无线网络中干扰问题的作用探讨  

Discussion on Effect of Filter on Eliminating Interferences on Wireless Network

作　　者：全楠楠 孟景辉 杨树忠 刘晓亮 Quan Nanan;Meng Jinghui;Yang Shuzhong;Liu Xiaoliang

机构地区：[1]北京铁科英迈技术有限公司,北京100081 [2]中国铁道科学研究院集团有限公司基础设施检测研究所,北京100081

出　　处：《铁道通信信号》2020年第12期64-68,共5页Railway Signalling & Communication

基　　金：中国铁道科学研究院集团有限公司青年基金项目,高铁无线通信干扰检测及干扰源识别方法研究,2018YJ150.

摘　　要：GSM-R作为铁路专用移动通信系统,承载着铁路调度通信和通用集群等多项重要的功能,保障其可靠、稳定的运行已成为工作中的重点内容。电磁波多在空间中传输,环境条件较为复杂且多变,干扰也随之产生,而加装滤波器可有效解决部分干扰问题。本文通过在车载MT终端加装滤波器进行模拟对比测试,结果表明:滤波器可以有效解决带外阻塞干扰、互调干扰等问题,但对带内同频、邻频干扰问题的处理效果不理想。As a special railway mobile communication system,GSM-R carries many important functions,such as railway dispatching communication and general trunking.So,it isa key task to ensure its reliable and stable operation.Electromagnetic waves are transmitted in space and the interferences will occur due to complex and changing environment conditions while the installa-tion of filters can effectively solve some of the interferences.Therefore,a filter is installed in the.onboard MT terminal for simulation test.The test results show that the filter can effectively e-liminate out-of-band blocking interference and inter-modulation interference but not quite effective in tackling in-band co-frequency and adjacent frequency interference.

关 键 词：铁路综合数字移动通信系统 滤波器 无线干扰 MT终端 

分 类 号：TN713[电子电信—电路与系统] TN975[交通运输工程—交通信息工程及控制] U285.21[交通运输工程—道路与铁道工程]