Author(s)

Hao Niu, Taiyi Zhang, Li Sun

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Relay selection is an effective method to realize the cooperative diversity gain in wireless networks. In this paper, we study a threshold-based single relay selection algorithm. A reasonable threshold value is set at each relay node, and the first relay with the instantaneous channel gain larger than the threshold will be se-lected to cooperate with the source. The exact and closed form expression for its outage probability is de-rived over independent, non-identically distributed (i. n. i. d) Rayleigh channels. The complexity of the algo-rithm is also analyzed in detail. Simulation results are presented to verify our theoretical analysis.

Relay Selection, Outage Probability, Threshold, Wireless Networks

H. Niu, T. Zhang and L. Sun, "Performance Analysis of a Threshold-Based Relay Selection Algorithm in Wireless Networks," Communications and Network, Vol. 2 No. 2, 2010, pp. 87-92. doi: 10.4236/cn.2010.22014.