Effects of Co-Channel Interference on Sum-Rate Based Relay Selection Method for A Dual-Hop Multiple Full-Duplex Two-Way Wireless Relaying Networks

Abstract

This paper investigates the co-channel interference effects on sum-rate based relay selection strategy. Theinvestigation considers a dual-hop multiple full-duplex bi-directional wireless relay in the system model. According toanalytical, asymptotic and the Monte-Carlo simulation results, sum-rate based relay section strategy outperforms themax-min based strategy. Results also show that the co-channel interference degrades the achievable diversity orderfrom N to 0 and also causes system coding gain losses in high signal-to-noise ratio regimes. On the other hand, the cochannelinterference also severely affects the system achievable rate performance and degrades the performance curvesat high SNR regimes.