高速铁路移动通信系统多天线分集接收方案  

Multi-antenna diversity receiving scheme for mobile communication system in high-speed railway

作　　者：罗万团[1,2] 方旭明[1] 程梦[1] 赵亚军[3] 

机构地区：[1]西南交通大学信息编码与传输四川省重点实验室,四川成都610031 [2]广西民族大学物理与电子工程学院,广西南宁530006 [3]中兴通讯股份有限公司基带算法部,北京100191

出　　处：《通信学报》2014年第6期73-81,共9页Journal on Communications

基　　金：国家重点基础研究发展计划("973"计划)基金资助项目(2012CB316100);国家自然科学基金资助项目(61071108;61032002);铁道部科技研究开发计划重点课题基金资助项目(2011X011-A);中兴通讯产学研合作基金资助项目~~

摘　　要：在差分调制解调的信号模型下,提出了高铁场景下2种多天线分集接收模型——线性合并分集接收和统计合并分集接收,从而得出高铁场景下车地无线宽带通信较有效的分集接收方案,提升系统性能。数学分析和仿真结果表明,所提出的线性合并分集和统计合并分集都可以通过增加分集数来降低高速移动带来的误码率平层,统计合并分集的性能要优于线性合并分集,但是其接收机复杂度也比线性合并分集要高。在实际应用中可以根据QoS的要求在性能和复杂度之间进行折衷。Under the signal model of differential modulation and demodulation, two multi-antenna diversity receptions （linear combiner and statistic combiner） were proposed, and then the effective diversity reception scheme of Wain-to-ground wireless broadband communication for high-speed railway scenarios was concluded. Mathematical analysis and simulation results indicate that by increasing the diversity number, the proposals can reduce the error floor because of high mobility. The performance of linear combiner is much better than that of statistic combiner, but the re- ceiver complexity of linear combiner is also higher than that of statistic combiner. In term of practical application, the tradeoff between performance and complexity must be made according to the quality of service （QoS） requirements.

关 键 词：高速铁路 线性合并分集 统计合并分集 误码率 误码率平层 

分 类 号：U285[交通运输工程—交通信息工程及控制] TN925[交通运输工程—道路与铁道工程]