Quasi-Orthogonal Space Time Block Code for Decode-and-Forward Relay Networks

被引：2
|
作者：
Li Zhengquan [1 ,2 ]
Shen Lianfeng [2 ]
Wang Jingjing [1 ]
机构：
[1] Yangzhou Univ, Informat Engn Coll, Yangzhou 225009, Peoples R China
[2] Southeast Univ, NMC Res Lab, Nanjing 210096, Peoples R China
来源：
2009 INTERNATIONAL FORUM ON COMPUTER SCIENCE-TECHNOLOGY AND APPLICATIONS, VOL 3, PROCEEDINGS | 2009年
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
space time block code; decode-and-forward; bit error rate; maximum-likelihood decoding algorithm; pair-wise decoding algorithm;
D O I：
10.1109/IFCSTA.2009.252
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
A kind of quasi-orthogonal space time block code for decode-and-forward relay networks is analyzed in this paper. At the source, 4 single-antenna users transmit the quasi-orthogonal space time block code matrix. At the relay node, maximum-likelihood decoding algorithm is adopted and the decoded symbols are then encoded into quasi-orthogonal code which is transmitted through transmit antenna. At the destination, pair-wise decoding algorithm is utilized. Finally we compare the performance of the quasi-orthogonal space time block code in relay networks with that of the quasi-orthogonal space time block code in traditional communication system. Simulation results show that at the given BER of 10-3, the new code can provide a gain of 4dB and 1.8dB comparing with that for the traditional quasi-orthogonal code. And at the given BER of 10-5, the new code can provide a gain of 4.5dB and 3.5dB comparing with that for the old quasi-orthogonal code.
引用
收藏
页码：58 / +
页数：2
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