Relay Fairness in Opportunistic Cooperative Communication Systems
Yuan Zhang · Communications technology · 2011
To improve the performance of relay fairness in opportunistic cooperative communication systems,a cooperation scheme is suggested,aiming at no outage performance deterioration.Based on the constructed system model,a new opportunistic cooperation scheme is proposed,and by introducing proportional fair algorithm,this scheme is improved.The relay selection probability and outage probability of these two schemes are analyzed.In the light of defined fairness factor,the relay fairness and the upper limit of ideal fairness are represented.Numerical Simulation indicates that the proposed opportunistic cooperation scheme could greatly improve the relay fairness,and under large signal-to-noise ratio condition,this relay fairness approximates to the upper limit of ideal fairness without any loss of outage performance.