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.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
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)
