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Accurate Outage Analysis of Incremental Decode-and-Forward Opportunistic Relaying

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3 Author(s)
Tourki, K. ; Dept. of Electr. & Comput. Eng., Texas A&M Univ. at Qatar, Qatar ; Hong-Chuan Yang ; Alouini, M.-S.

In this paper, we investigate a dual-hop decode-and-forward opportunistic relaying scheme where the selected relay chooses to cooperate only if the source-destination channel is of an unacceptable quality. We first derive the exact statistics of received signal-to-noise (SNR) over each hop with co-located relays, in terms of probability density function (PDF). Then, the PDFs are used to determine very accurate closed-form expression for the outage probability for a transmission rate R. Furthermore, we perform asymptotic analysis and we deduce the diversity order of the scheme. We validate our analysis by showing that performance simulation results coincide with our analytical results over different network architectures.

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Wireless Communications, IEEE Transactions on  (Volume:10 ,  Issue: 4 )