Outage Performance for Decode-and-Forward Two-Way Relay Network with Multiple Interferers and Noisy Relay

In this paper, we investigate the outage performance for a decode-and-forward two-way relay network in the presence of multiple strong interferers at the source/destination terminals. We first derive closed-form expressions for the outage probability of the system under asymmetrical and symmetrical cases, of whether the received powers at the relay from both source terminals are the same or different. Based on the analytical expressions, we perform asymptotic analysis in the case where the power of relay or/and the power of terminals become infinite. Our analysis shows that the outage probability is lower when there is one dominating interferer than when there are several equal-power interferers. In addition, optimal power allocation between the two source terminals and the diversity order of the system are investigated in asymptotic analysis. Simulation results demonstrate that our analytical results are in excellent agreement with the Monte Carlo simulations.