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Performance analysis of selective decode and forward protocol with partner selection

Cooperative diversity is a technique that mitigates fading without additional cost, hardware and complexity. A cooperative diversity system having a source, multiple relays and a destination is considered. The end–to–end symbol error probability (SEP) of a full channel state information (CSI) selection combining scheme for cooperative communication, with selective decode and forward (S–DF) relaying for binary phase–shift keying (BPSK) symbol in a flat Rayleigh fading environment, is derived. Here, the effect of source–to–relay channel is included in the error analysis of cooperative diversity systems with selection combining. The threshold for S–DF is set with ratio factor α. On the basis of the optimised α value, the partner selection is performed. This scheme offers better SEP when compared with conventional selection combining scheme. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png International Journal of Mobile Communications Inderscience Publishers
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