LEI Xi-qian, JIANG Zhan-jun, FENG Jing, HE Jie-wen
（School of Electronic and Information Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China）
Abstract： The user signal quality as well as the performance of transmission link experiences severe loss due to wireless channel fading and propagation loss in high-speed railway scenario. To improve the quality at the receiving end, spatial diversity was realized by means of cooperative communication technology based on the uncorrelated characteristics of the channels. The model of mobile communication system in high-speed railway was set up, and a cooperative scheme based on statistics was proposed. Mathematical analysis and simulation results show that the quality of the received signal and the performance of the transmission link are significantly improved using cooperative communication technology compared to that in non-cooperative communication mode.
Key words： high-speed train; channel fading; propagation loss； cooperative communication technology; spatial diversity
CLD number： TN925 Document code： A
Article ID： 1674-8042（2018）04-0367-06 doi： 10.3969/j.issn.1674-8042.2018.04.010
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高铁场景下基于中继天线的协作通信技术研究
雷锡骞， 蒋占军， 冯 婧， 何杰文
（兰州交通大学 电子与信息工程学院， 甘肃 兰州 730070）
摘 要: 高速铁路环境下无线信道衰落和传输损耗会使用户接收端信号质量变差， 传输链路性能急剧下降。 为了提高接收端的信号质量， 采用协作技术利用信道的非相关性以实现空间分集 搭建了高速铁路移动通信系统模型， 提出了一种基于统计的中继协作方案。 理论推导和仿真结果表明， 与无中继协作方式相比， 采用协作方案使接收端信号质量得到了显著的提升， 改善了传输链路性能。
关键词: 高铁； 信道衰落； 传输损耗； 协作通信技术； 空间分集
引用格式： LEI Xi-qian, JIANG Zhan-jun, FENG Jing, et al. Cooperative communication technology based on relay antenna in high-speed train scenario. Journal of Measurement Science and Instrumentation, 2018, 9(4)： 367-372. ［doi： 10.3969／j.issn.1674-8042.2018.04.010］
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