时变平衰落信道下结合Doppler分集的MIMO系统性能分析  

Joint Space Diversity with Doppler Diversity in MIMO Wireless Communications

作　　者：王健康[1] 刘江华[1] 罗涛[1] 乐光新[1] 

机构地区：[1]北京邮电大学电信工程学院,北京100876

出　　处：《北京邮电大学学报》2004年第5期80-84,共5页Journal of Beijing University of Posts and Telecommunications

基　　金：国家自然科学基金重大研究计划项目(90104018);"863计划"项目(2001AA123016);国家自然科学基金项目(60172052)

摘　　要：本文提出一种联合考虑空间分集与Doppler分集方法来提高时变多径衰落信道下高速移动通信系统的性能.给出了联合空间分集与Doppler分集的多天线发送多天线接收(MIMO)系统模型,推导出了时变衰落信道下系统所能获得的最大分集阶为ML(Q+1),并提出了实现该分集增益的编码方法.研究了系统的中断性能,并通过仿真验证了2种分集技术的结合可以带来系统性能的提高.Jointing space diversity with Doppler diversity in MIMO (multiple input multiple output) wireless communications is researched in this paper. The MIMO channel model that joints space diversity with Doppler diversity is set up. Based on it, we show that the maximum diversity order is ML(Q+1). Then, the coding scheme in this situation is proposed. Following this, outage capacity is researched, and simulations are provided to corroborate our theoretical findings.

关 键 词：空间分集 DOPPLER分集 时间选择性信道 多天线发送多天线接收 

分 类 号：TN911.22[电子电信—通信与信息系统]