Joint Source-Relay Precoder and Decoder Designs for Amplify-and-Forward MIMO Relay System with Imperfect Channel State Information

被引：0
|
作者：
Zhang, Jianhua [1 ]
Bao, Wei [1 ]
Zhang, Ping [1 ]
Wang, Qiang [1 ]
机构：
[1] Beijing Univ Posts & Telecom, Wireless Technol Innovat Inst, Minist Educ, Key Lab Universal Wireless Commun, Beijing, Peoples R China
来源：
2012 IEEE VEHICULAR TECHNOLOGY CONFERENCE (VTC FALL) | 2012年
关键词：
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中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
This paper addresses joint source-relay precoder and decoder designs for a single data flow transmission in amplify-and-forward (AF) multiple-input-multiple-output (MIMO) relay networks with imperfect channel state information (CSI). First, the precoder is obtained by improving the lower bound of the received SNR under power constraints at source and relay. Then, we derive the decoder to maximize the average received signal-to-noise ratio (SNR). Numerical results show a great improvement on the received SNR by applying our proposed schemes. Besides, we also make a discussion about the impact which brought by the channel correlation coefficients based on our derived received SNR expression and the numerical results.
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页数：5
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