\textcolor{blue}{In} this paper, we investigate the performance of physical layer security (PLS) over reconfigurable intelligent surfaces (RIS)-aided wireless communication systems, where all fading channels are modeled with Fisher-Snedecor $\mathcal{F}$ distribution. Specifically, we consider a RIS with $N$ reflecting elements between the transmitter and the legitimate receiver to develop a smart environment and also meliorate secure communications. In this regard, we derive the closed-form expressions for the secrecy outage probability (SOP) and average secrecy capacity (ASC). \textcolor{blue}{We also analyze the asymptotic behaviour of the SOP and ASC by exploiting the residue approach}. Monte-Carlo (MC) simulation results are provided throughout to validate the correctness of the developed analytical results, showing that considering RIS in wireless communication systems has constructive effects on the secrecy performance.
翻译:本文研究了基于可重构智能表面(RIS)辅助无线通信系统的物理层安全性能,其中所有衰落信道均采用Fisher-Snedecor $\mathcal{F}$分布模型。具体而言,在发射机和合法接收机之间考虑带有$N$个反射元素的RIS以开发智能环境并改善安全通信。为此,我们推导了秘密失效概率(SOP)和平均秘密容量(ASC)的闭式表达式。 通过利用残留法分析SOP和ASC的渐近行为,提供了Monte-Carlo(MC)仿真结果以验证所开发的分析结果的正确性,表明在无线通信系统中考虑RIS具有建设性的安全性能效果。