Secrecy Outage Analysis of Two-Hop Decode-and-Forward Mixed RF/UWOC Systems

The secrecy performance is analyzed for a two-hop mixed radio frequency (RF)/underwater wireless optical communication (UWOC) system using decode-and-forward (DF) relay. All RF and UWOC links are modeled by the $\alpha -\mu $ exponential-generalized Gamma distributions, respectively. We first derive expressions of lower bound outage probability in closed-form, these used to asymptotic simple functions at high signal-to-noise ratio. Moreover, based on expressions, we can numerically determine suboptimal transmit power wide variety channel conditions. analyses validated Monte Carlo simulation.