Error performance analysis of linear zero forcing and MMSE precoders for MIMO broadcast channels

被引：54
|
作者：
Shao, X. [1 ]
Yuan, J.
Shao, Y.
机构：
[1] Univ New S Wales, Sch Elect Engn & Telecommun, Sydney, NSW 2052, Australia
[2] Kunming Univ Sci & Technol, Fac Informat Engn & Automat, Kunming, Peoples R China
来源：
IET COMMUNICATIONS | 2007年 / 1卷 / 05期
关键词：
D O I：
10.1049/iet-com:20070037
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：
Linear precoding (LP) techniques for a multiuser multiple-input-multiple-output broadcast channel is investigated and analytical results of the achievable sum capacity and error performance for zero forcing (ZF) linear precoders is presented. It is shown that the detection signal-to-noise ratio of ZF-LP can be accurately approximated by a shrinking Chi-square distribution. The symbol error rate and its achievable diversity gain of ZF-LP are given. Then, an improved linear precoder based on the minimum mean-square error (MMSE) criterion is derived. Its error performance and sum capacity are analysed and compared with that of the ZF-LP. It is shown that the MMSE-LP can achieve much better error performance and a high sum capacity than the existing ZF-LP.
引用
收藏
页码：1067 / 1074
页数：8
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