Performance analysis of energy harvesting AF relay systems over Nakagami-m fading channels with co-channel interferences

In this paper, we present performance analysis for an energy harvesting amplify-and-forward relay system with multiple co-channel interferences (CCIs) at the relay and destination, over Nakagami-m fading Channels. Specifically, exact and asymptotic closed-form expressions are derived for outage probability of the considered relay system. In addition, we also obtain an efficient numerical expression for the ergodic throughput by exploiting Gauss-Chebychev quadrature formula. Finally, the optimal time ratio for maximizing the system's ergodic throughput is studied numerically. The theoretical derivations are validated through Monte Carlo simulations. Through the asymptotic analysis, we show that the system diversity order is determined by the smaller channel fading severity parameters of the dual-hop desired transmission links, regardless of the fading channel parameters of CCIs.