Outage Performance of Decode-and-Forward Relay Systems Using Imperfect MRC Receiver over Nakagami-m Fading Channels

Weiwei YANG  Yueming CAI  Lei WANG  

IEICE TRANSACTIONS on Information and Systems   Vol.E93-D   No.12   pp.3273-3275
Publication Date: 2010/12/01
Online ISSN: 1745-1361
DOI: 10.1587/transinf.E93.D.3273
Print ISSN: 0916-8532
Type of Manuscript: Special Section LETTER (Special Section on Parallel and Distributed Computing and Networking)
decode-and-forward,  imperfect MRC,  outage probability,  

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In this letter, we analyze the outage performance of decode-and-forward relay systems with imperfect MRC receiver at the destination. Unlike the conventional perfect MRC, the weight of each branch of the imperfect MRC receiver is only the conjugate of the channel impulse response, not being normalized by the noise variance. We derive an exact closed-form expression for the outage probability over dissimilar Nakagami-m fading channels. Various numerical examples confirm the proposed analysis.