Joint optimization of relay-precoders and decoders with partial channel side information in cooperative networks

Authors:
Zhihang Yi;Il-Min Kim
Affiliations:
Department of Electrical and Computer Engineering, Queen's University, Kingston, Ontario, Canada;Department of Electrical and Computer Engineering, Queen's University, Kingston, Ontario, Canada
Venue:
MILCOM'06 Proceedings of the 2006 IEEE conference on Military communications
Year:
2006

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Abstract

In this paper, we jointly optimize the relayprecoders and decoders with partial channel side information (CSI) in a cooperative network. Specifically, two different CSI assumptions are considered: 1) full CSI at the destination terminal and partial CSI at the relay terminals; 2) partial CSI at the destination terminal and the relay terminals. We show that the optimum relay-precoders and decoders work in a fashion of channel selection. It is demonstrated by numerical results that the proposed optimum relay-precoders and decoders improve the performance considerably.