On the performance of the MIMO zero-forcing receiver in the presence of channel estimation error

被引：242

作者：

Wang, Cheng ^{[1
]}

Au, Edward K. S. ^{[1
]}

Murch, Ross D. ^{[1
]}

Mow, Wai Ho ^{[1
]}

Cheng, Roger S. ^{[1
]}

Lau, Vincent ^{[1
]}

机构：

[1] Hong Kong Univ Sci & Technol, Dept Elect & Comp Engn, Hong Kong, Hong Kong, Peoples R China

来源：

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2007年 / 6卷 / 03期

关键词：

MIMO; MIMO ZF receiver; channel estimation error;

D O I：

10.1109/TWC.2007.05384

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

By employing spatial multiplexing, Multiple-Input Multiple-Output (MIMO) wireless antenna systems provide increases in capacity without the need for additional spectrum or power. Zero-Forcing (ZF) detection is a simple and effective technique for retrieving multiple transmitted data streams at the receiver. However the detection requires knowledge of the channel state information (CSI) and in practice accurate CSI may not be available. In this letter, we investigate the effect of channel estimation error on the performance of MIMO ZF receivers in uncorrelated Rayleigh flat fading channels. By modeling the estimation error as independent complex Gaussian random variables, tight approximations for both the post-processing SNR distribution and bit error rate (BER) for MIMO ZF receivers with M-QAM and M-PSK modulated signals are derived in closed-form. Numerical results demonstrate the tightness of our analysis.

引用

页码：805 / 810

页数：6