Space-Time Codes for Multiple Access Systems with Low MMSE Decoding Complexity

被引：1

作者：

Hsu, Fu-Te ^{[1
,2
]}

Su, Hsuan-Jung ^{[1
,2
]}

机构：

[1] Natl Taiwan Univ, Dept Elect Engn, Taipei 10764, Taiwan

[2] Natl Taiwan Univ, Grad Inst Commun Engn, Taipei 10764, Taiwan

来源：

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2009年 / 8卷 / 10期

关键词：

Space-time codes; multiple access channels; minimum mean-square error (MMSE); interference suppression; multiple-input multiple-output (MIMO) systems; DIVERSITY;

D O I：

10.1109/TWC.2009.081722

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：

We study a class of space-time codes constructed by linear dispersion encoding that allow low-complexity linear minimum mean square error (MMSE) decoding for a multiple access system. Considering that the information symbols are drawn from square QAM constellations, we optimize rate-one space-time code designs with MMSE decoding to achieve minimum bit error rate (BER) for any channel realization. In addition, the performance is further improved with a simple MMSE successive interference cancellation (MMSE-SIC) method. Simulation results compare the proposed design with existing rate-one designs and show that simple rate-one circulant designs are also good candidates for deployment in multiple access systems.

引用

页码：4988 / 4992

页数：5

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