通信学报 ›› 2014, Vol. 35 ›› Issue (6): 73-81.doi: 10.3969/j.issn.1000-436x.2014.06.010

• 学术论文 • 上一篇    下一篇

高速铁路移动通信系统多天线分集接收方案

罗万团1,2,方旭明1,程梦1,赵亚军3   

  1. 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
  • 出版日期:2014-06-25 发布日期:2017-06-29
  • 基金资助:
    国家重点基础研究发展计划(“973计划)基金资助项目;国家自然科学基金资助项目;国家自然科学基金资助项目;铁道部科技研究开发计划重点课题基金资助项目;中兴通讯产学研合作基金资助项目

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

Wan-tuan LUO1,2,ANGXu-ming F1,Meng CHENG1,Ya-jun ZHAO3   

  1. 1 Key Lab of Information Coding and Transmission, Southwest Jiaotong University, Chengdu 610031, China
    2 College of Physics and Electronic Engineering, Guangxi University for Nationalities, Nanning 530006, China
    3 Baseband Algorithm Department, ZTE, Beijing 100191, China
  • Online:2014-06-25 Published:2017-06-29
  • Supported by:
    The National Basic Research and Development Program of China (973 Program);The Na-tional Natural Science Foundation of China;The Na-tional Natural Science Foundation of China;The Key Programs of Technological Research and Development of the Ministry of Railways;The ZTE Research and Development Fund

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。

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

Abstract:

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 train-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.

Key words: high-speed railway, linear combiner, statistic combiner, bit error rate, error floor

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