Performance analysis of dual-hop DF relaying in G fading channel in the presence of co-channel interference

In this paper, we investigate the performance of a dual-hop adaptive decode-and-forward (DF) relaying system in composite Nakagami-m/Inverse-Gaussian fading channels in the presence of multiple interferers. This type of fading is called G fading in the literature and has attracted increasing research interest recently. It has a better ability to approximate the Nakagami-m/lognormal model comparing with the Nakagami-m/gamma model. We present exact or approximate closed-form expressions for the outage probability and the analytical upper bounds for the ergodic capacity. These closed-form solutions are highly desirable because they allow for rapid and efficient evaluation of system performance. The results of this paper are verified by Monte Carlo simulations.