MIMO衰落信道的多用户分集性能分析  

On the Performance of Multi-User Diversity Gain in MIMO Fading Channel

作　　者：周华[1] 杨大成[1] 马敏[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4期64-68,共5页Journal of Beijing University of Posts and Telecommunications

基　　金：国家"973"基金项目(G1998030409)

摘　　要：利用秩统计量和随机矩阵的理论分析了单天线和多天线下的多用户分集增益的性能.结论是多输入多输出(MIMO)系统下的多用户分集随天线数的增加而减少.另外,通过实例说明了在设计多用户MIMO系统收发机的结构时,除了多天线的空间复用增益是要考虑的因素之外,多用户分集增益也是应该考虑的因素.The performance of multi-user diversity gain (MDG) multiple input-multiple output (MIMO) fading channels is studied by the theory of the order statistics and random matrices. It is found that the MDG decreases with the increase of the number of antennas. It is also pointed out that the total gain, which includes the MDG and spatial multiplexing gain (SMG), must be optimized when designing the multiuser MIMO communication systems.

关 键 词：多输入多输出系统 衰落信道 多用户分集 空间复用 信道容量 无线通信 

分 类 号：TN929.5[电子电信—通信与信息系统]