MIMO在高速铁路GSM-R车地通信系统中应用的研究

Application research on MIMO technology in Train-ground Communication System of GSM-R for high speed railway

GSM-R(GSM for Railways)系统作为一种新的铁路无线通信网络,应用于CTCS-3级列车控制系统,以满足高速铁路可靠的信号传输需求。但从实际的运行效果来看,对于车地无线传输质量的影响主要来自于多径效应,为此,本文在分析MIMO(Mu1t1ple-1nput-multiple-output,多输入多输出)的基础上,证实了将MIMO技术引入GSM-R系统能使通信质量得到改善,非常适合高速铁路移动通信的特点。

With the rapid construction of high speed railway and dedicated passenger railway lines,GSM-R System,as a new railway wireless communication network,was used in the CTCS level 3 Train Operating Control System to fulfill the high speed railway reliability requirements of signal transforming.According to the test result of several lines,which for the most part seriously affected the communication quality was the multi-path effect.To deal with these problems,Based on the analysis of MIMO technology,it was certified by this dissertation that,using MIMO technology in the GSM-R System could improve the communication quality and fit the characteristic of high speed railway communication.