Exact Outage Probability Analysis for Selection Decode-and-Forward Cooperation Systems

Abstract:

In this paper, we present a selection decode-and- forward (S-DF) cooperation scheme where only the “best” relay, which is selected as the one who can decode correctly its received signal from source node and can achieve the highest instantaneous signal-to-noise ratio (SNR) at the destination, participates in relaying the source’s signal. We derive a novel exact closed-form expression of outage probability for the S-DF scheme over Rayleigh fading channels, based on which an asymptotic outage analysis is further presented in high SNR regime, showing that given M potential relays, M+1 diversity order is achieved by source node. Consequently, the proposed S-DF scheme with the best relay selection can achieve the full diversity at the expense of just two channels only regardless of the number of candidate relays.

• Periodical: Advanced Materials Research (Volumes 341-342)
• Pages: 509-513
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.341-342.509
• Online since: September 2011
• Authors: Yu Long Zou, Yu Dong Yao
• Keywords: Cooperative Diversity, Decode-and-Forward, Outage Probability, Relays Selection, Selection Cooperation

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