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Performance Analysis of a Threshold-Based Relay Selection Algorithm in Wireless Networks
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Communications and Network·Volume 02 (2010)·Pages 87–92·Published 31 May 2010·DOI10.4236/cn.2010.22014
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Abstract
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.
KeywordsRelay SelectionOutage ProbabilityThresholdWireless Networks
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