相关瑞利信道下的分集与复用折衷  

Diversity-Multiplexing Tradeoff for Correlated Rayleigh MIMO Channels

作　　者：栾添[1] 孙怡[1] 

机构地区：[1]大连理工大学电子与信息工程学院,辽宁大连116024

出　　处：《中国电子商情（通信市场）》2007年第10期12-17,共6页

摘　　要：多天线可以用来增加通信系统的分集增益或者复用增益，二者之间存在着基本的折衷关系。相关瑞利信道的折衷性能差于i．i．d瑞利衰落信道，并且相关矩阵降秩时，折衷性能进一步下降。本文给出了相关瑞利信道下分集增益和复用增益的最优折衷关系。Multiple antennas can be used to increase the amount of diversity gain or multiplexing gain in wireless communication systems, and there is a fundamental tradeoff between how much of each gain can be achieved. The tradeoff performance of correlated Rayleigh MIMO channels is worser than that of iid Rayleigh channels. Moreover, for channels with rank-deficient correlated matrices, the tradeoff performance is worser, compared with that of channels with full rank correlated matrices. In this paper, we give a simple characterization of the optimal tradeoff curve for correlated Rayleigh MIMO channels.

关 键 词：多输入多输出 分集增益 复用增益 相关信道 

分 类 号：TN911.2[电子电信—通信与信息系统]