Transmit selection in spatial multiplexing systems

被引：307

作者：

Gore, DA ^{[1
]}

Heath, RW

Paulraj, AJ

机构：

[1] Stanford Univ, Informat Syst Lab, Stanford, CA 94305 USA

[2] Univ Texas, Dept Elect & Comp Engn, Austin, TX 78712 USA

来源：

IEEE COMMUNICATIONS LETTERS | 2002年 / 6卷 / 11期

关键词：

D O I：

10.1109/LCOMM.2002.805517

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

In this letter we solve the transmit antenna selection problem for a zero forcing spatial multiplexing system with knowledge of the channel statistics at the transmitter. We show through Wishart matrix analysis that the signal-to-noise ratio on the kth stream is a weighted Chi-squared variable with the weight equal to the kth diagonal entry of the inverted transmit correlation matrix. We use this result to develop selection algorithms for two cases-maximizing ergodic capacity and minimizing the average probability of error. Monte Carlo simulations illustrate potential performance improvements.

引用

页码：491 / 493

页数：3

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