Physical Layer Security of RIS-Assisted Networks Over Fisher-Snedecor F Fading Channels

This paper investigates the performance of physical layer security (PLS) in wireless communication systems, where a reconfigurable intelligent surfaces (RIS) is deployed between the transmitter and legitimate receiver to enhance the communication security. The Fisher-Snedecor F distribution is adopted to model the underlying fading channels, owing to its accuracy, tractability and generality. On this basis, this paper evaluates the performance of the proposed system by deriving the average secrecy capacity (ASC) and the secrecy outage probability (SOP) in two scenarios: uncorrelated and correlated Fisher-Snedecor F channel coefficients. Furthermore, the asymptotic behavior of the ASC and SOP in high signal-to-noise ratio (SNR) regime is examined. The primary objective of this endeavor is to elicit deeper and more comprehensive insights into the overall performance characteristics of the system under examination. Finally, this paper verifies the analytical results through numerical illustrations, and demonstrate the effectiveness of employing RIS.