Widely Linear MMSE Receivers for Linear Dispersion Space-Time Block-Codes

被引：18

作者：

Aghaei, Amirhossein S. ^{[1
]}

Plataniotis, Konstantinos N. ^{[1
]}

Pasupathy, Subbarayan ^{[1
]}

机构：

[1] Univ Toronto, Edward S Rogers Sr Dept Elect & Comp Engn, Toronto, ON M5S 3G4, Canada

来源：

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2010年 / 9卷 / 01期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Improper complex random vector; linear dispersion codes; MIMO systems; space-time codes; widely-linear estimation;

D O I：

10.1109/TWC.2010.01.080897

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：

This paper proposes a new receiver structure for linear-dispersion (LD) codes, subsuming orthogonal, quasi-orthogonal and V-BLAST codes. We suggest to use widely-linear minimum-mean-squared-error (WL-MMSE) estimates of transmitted symbols in lieu of the sufficient statistics for maximum likelihood (ML) detection of these symbols. Proposed structure offers both optimal (ML) and suboptimal solutions. Simulation results show that the suboptimal receiver performs close to the optimal one, while reducing the receiver's complexity. Structure of the proposed receiver is particularly studied for orthogonal and quasi-orthogonal LD codes. Specifically, it is proved that Alamouti's combining scheme provides WL-MMSE estimates of the transmitted symbols.

引用

页码：8 / 13

页数：6

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