Exact and Closed-Form Outage Probability of Opportunistic Single Relay Selection in Decode-and-Forward Relaying

Jung-Bin KIM  Dongwoo KIM  

IEICE TRANSACTIONS on Communications   Vol.E91-B   No.12   pp.4085-4088
Publication Date: 2008/12/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e91-b.12.4085
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Broadcast Systems
cooperative diversity,  outage probability,  opportunistic relaying,  decode-and-forward,  

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In this letter, we first provide the closed-form exact outage probability of opportunistic single relay selection in decode-and-forward (DF) relaying with the direct source-destination link under arbitrarily distributed Rayleigh fading channels. The signals from the source and the selected relay are combined at the destination by using maximal ratio combining (MRC). We derive the probability density function (PDF) and the cumulative density function (CDF) of received SNR at the destination. Numerical results show that the analytic results exactly match with the simulated ones.