Space-time power optimization of variable-rate space-time block codes based on successive interference cancellation

被引：11
|
作者：
Kim, IM [1 ]
机构：
[1] Queens Univ, Dept Elect & Comp Engn, Kingston, ON K7L 3N6, Canada
来源：
IEEE TRANSACTIONS ON COMMUNICATIONS | 2004年 / 52卷 / 07期
基金：
美国国家科学基金会;
关键词：
successive interference cancellation (SIC); transmit power; variable-rate space-time block codes (STBCs); wireless communications; zero-forcing (ZF);
D O I：
10.1109/TCOMM.2004.831345
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：
Based on a zero-forcing with successive interference cancellation (ZFSIC) method, we construct variable-rate space-time block codes (STBCs) for two, three, and four transmit antennas in Rayleigh fading channels. Considering the error-propagation effect in the ZFSIC scheme, we analyze the bit-error rate (BER) and optimize the transmit power so that the average BER is minimized. Unlike the approach based on zero-forcing (M), the method adopted in this paper can construct. variable-rate STBCs even when the receive antennas are fewer than the transmit antennas. In addition, to improve the BERs further, we propose space-time power optimization. Numerical results show that the codes presented in this paper provide much lower BERs, compared with the codes developed by Kim and Tarokh.
引用
收藏
页码：1204 / 1213
页数：10
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