Performance analysis of two-way decode-and-forward relaying in the presence of co-channel interferences

In this paper we investigate the performance of practical dual-hop decode-and-forward (DF) two-way relaying networks in the presence of a finite number of co-channel interferes and thermal noise at the relay and the source nodes. Our study generalizes previous results, since it accounts for interference affecting all nodes in the network. Considering transmissions over independent but not necessarily identically distributed (i.n.i.d.) Rayleigh fading channels, specifically, closed-form expressions for the cumulative distribution function (CDF) of the signal-to-interference-plus-noise ratio (SINR) at all nodes are obtained based on which the end-to-end outage probability (OP) and the symbol error probability (SEP) of the system, under the general case namely asymmetrical case, are presented. Furthermore, the high SNR approximation is also derived. The numerical results corroborate the analytical results and they are illustrated to be efficient tools for exact evaluation of the system performance.