A simple approximation for the secrecy outage probability (SOP) over generalized-K fading channels is developed. This approximation becomes tighter as the average signal-to-noise ratio (SNR) of the wiretap channel decreases. Based on this simple expression, we also analyze the asymptotic SOP in the high SNR region of the main channel. Besides simplifying the SOP expression significantly, this asymptotic SOP expression reveals the secrecy diversity order in a general case. Numerical results demonstrate the high accuracy of our proposed approximation results.
@article{arxiv.1907.01818,
title = {A Simple Evaluation for the Secrecy Outage Probability Over Generalized-K Fading Channels},
author = {Hui Zhao and Yuanwei Liu and Ahemd Sultan-Salem and Mohamed-Slim Alouini},
journal= {arXiv preprint arXiv:1907.01818},
year = {2019}
}