Outage probability of Amplify-and-Forward two-way cooperative systems in presence of multiple co-channel interferers

We consider a two-way relaying (TWR) system over Rayleigh fading channels. An accurate closed form expression for its outage performance is derived assuming a fixed-gain relay. Unlike previous works that consider interference only at the relay or at the terminals, we assume interference at all three terminals of the system. Computer simulations demonstrate that the derived expressions are accurate at low and medium SNRs.