| Resumen |
In this paper, we extend Wyner's three-node wiretap channel model by incorporating arbitrarily correlated shadow fading channels to better reflect real-world wireless environments and analyze its security performance at the physical layer in transmitting secure messages to a legitimate receiver over the main channel, where encoder-assisted side information (SI) is utilized to enhance the secrecy level. By adopting a Log-normal (LN) distribution model for the shadow fading of both the main and eavesdropper (transmitter-to-illegitimate-receiver) channels and assuming that the transmitter has full channel state information (CSI) of these channels, we derive closed-form expressions for the average secrecy capacity (ASC), secrecy outage probability (SOP), and the probability of non-zero secrecy capacity (PNSC) to provide an analytical understanding. Finally, the validity of our analytical results is confirmed through Monte Carlo (MC) simulations. © 2025 Elsevier B.V. |
