Journal of Beijing University of Posts and Telecommunications

  • EI核心期刊

JOURNAL OF BEIJING UNIVERSITY OF POSTS AND TELECOM ›› 2010, Vol. 33 ›› Issue (2): 29-33.doi: 10.13190/jbupt.201002.29.263

• Papers • Previous Articles     Next Articles

Robust Linear Transceiver Design in MIMO Relay System

ZHANG Bin, HE Zhi-qiang, NIU Kai   

  1. (Key Laboratory of Universal Wireless Communications (Beijing University of Posts and Telecommunications),Ministry of Education, Beijing 10086, China)
  • Received:2009-06-02 Revised:2009-10-10 Online:2010-04-28 Published:2010-04-28
  • Contact: Zhang Bin E-mail:zhangbin.bupt@gmail.com

Abstract:

Considering that the channel state information is often imperfect due to the noise and interference, a robust joint linear transceiver design scheme is proposed based on minimum mean square error criterion for a nonregenerative multipleinput multipleoutput(MIMO) relay system. Assuming that the channel estimation errors are independent complex Gaussian with zero mean and known secondorder statistics, the processing matrices at the source, relay and destination nodes could be derived through an iterative algorithm under average power constraint at both the source and the relay nodes. Simulations show that the joint design scheme is more robust and it can achieve a better bit error rate performance compared with the conventional zero forcing and minimum mean square error transceiver design schemes. 

Key words: multipleinput multipleoutput relay system, channel state information, minimum mean square error, joint design

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