Impact Analysis of Imperfect CSIS on Secrecy Performance of Two-Hop Cooperative Communication Networks

In this paper, we consider secure communication to analyze the physical layer security over a wireless dual-hop relay system in the presence of an eavesdropper with imperfect channel state information (CSI). In this scheme, the first hop from a source to a relay and the second hop from the relay to a destination is subject to Rayleigh fading. The relay will help to forward data signals from the source to the destination based on achievable secrecy rates. The secrecy performance is exactly evaluated by the secrecy outage probability of the achievable secrecy rates. Numerical examples are provided to corroborate the proposed studies.