Secrecy performance of AF relaying in cooperative NOMA over rician channel

Abstract

In this paper, we investigate the secrecy performance of an Amplify-and-Forward (AF) relay in a cooperative NOMA system. The AF relay ensures the transmission of the signal in the presence of one passive eavesdropper where all channels are assumed to undergo a Rician fading. In this context, analytical and asymptotic expressions for Secrecy Outage Probability (SOP) are derived. To verify our theoretical analysis, numerical results are presented, showing the effect of different Rician factors on secrecy performance.