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Asymptotic performance of amplify-and-forward MIMO relaying with transmit antenna selection

Science china(information Sciences) 2010年第12期53卷 2631-2641页

作者： cao lei ,yang dacheng,yang hongwen,feng chao & zhang xin school of information and communication,{4. University of posts and telecommunications,beijing 100876,china 1. school of information and communication Beijing University of Posts and Telecommunications Beijing 100876 China

This paper proposes two schemes,TAS-SD&RD and TAS-SR&RD,in which transmit antenna selection(TAS) strategies are combined with amplify-and-forward(AF) protocol in MIMO relaying scenario considering the destination has only limited channel state information(CSI) of the source-to-relay channel,and analyzes asymptotic performance of the two *** source,destination,and relay are equipped with multiple antennas,denoted by N S,N D,and N R,***,the paper derives the asymptotic outage probability and symbol error rate(SER) of the proposed schemes in the cooperative AF MIMO relaying *** analyses in high SNR regime lead to the conclusion that TAS-SD&RD and TAS-SR&RD can achieve full diversity order,N S N D + N R min{N S,N D },in some antenna configurations of the cooperative *** results that confirm our analyses are also presented in the paper.

关键词： cooperative amplify-and-forward(AF) multiple-input multiple-output(MIMO) relaying transmit antenna selection(TAS)

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Diversity order of decode-and-forward MIMO relaying with transmit antenna selection

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The Journal of china Universities of posts and telecommunications 2009年第5期16卷 1-7页

作者： cao lei yang Hong-wen zhang xin yang Da-cheng school of information and communication Engineering Beijing University of Posts and Telecommunications Beijing 100876 China

This article analyzes the diversity order of several proposed schemes, where the transmit antenna selection （TAS） strategies are combined with low-complexity decode-and-forward （DF） protocols in the multiple-input multiple-output （MIMO） relaying scenario. Although antenna selection is a suboptimal form of beamforming, it enjoys the advantages of tractable optimization and low feedback overhead. Specifically, this article proposes schemes that combine TAS strategies with fixed decode-and-forward （FDF） and selection decode-and-forward （SDF） protocols. Following that, the asymptotic expressions of outage probabilities are derived and the diversity order of the proposed schemes analyzed. These kinds of combination of transmit antenna selection strategies and low-complexity decode-and-forward protocols can achieve partial diversity order in the MIMO relaying scenario. The numerical simulations verify the analysis.

关键词： transmit antenna selection decode-and-forward MIMO relaying outage probability diversity order

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