  In this paper, we investigate the impact of side information (SI) on the
performance of physical layer security (PLS) under correlated fading channels.
By considering non-causally known SI at the transmitter and exploiting the
copula technique to describe the fading correlation, we derive closed-from
expressions for the average secrecy capacity (ASC) and secrecy outage
probability (SOP) under positive/negative dependence conditions. We indicate
that considering such knowledge at the transmitter is beneficial for system
performance and ensures reliable communication with higher rates, as it
improves the SOP and brings higher values of the ASC.
