Device-to Devie (D2D) system for communication in regard to an amplify-and-forward (AF) relay-assistance over  fading channels with its outage and success performance expression are presented in this work. The assumption for the presence of co-channel interference (CCI) at the relay and D2D receiver is made. To mitigate the fading conditions the selection combining (SC) scheme is also involved in the process. Characteristic approach function is used to derive the expressions for success and outage probabilities. The expressions depend on the path-loss of channels, distances between various nodes in the system and  distribution parameters. The numerical analysis of the outage and success probability are presented under different conditions of the system.

Index Terms- Co-channel Interference signals, Device-to-Device Communication,  fading, Outage Probability, Success Probability