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Physical Layer Security Enhancement With Reconfigurable Intelligent Surface-Aided Networks by Zhang, Jiayi; Du, Hongyang; Sun, Qiang; Ai, Bo; Ng, Derrick Wing Kwan is a scholarly article available to read on EtoBox.

What is Physical Layer Security Enhancement With Reconfigurable Intelligent Surface-Aided Networks about?

Reconfigurable intelligent surface (RIS)-aided wireless communications have drawn significant attention recently. We study the physical layer security of the downlink RIS-aided transmission framework for randomly located users in the presence of a multi-antenna eavesdropper. To show the advantages of RIS-aided networks, we consider two practical scenarios: Communication with and without RIS. In both cases, we apply the stochastic geometry theory to derive exact probability density function (PDF) and cumulative distribution function (CDF) of the received signal-to-interference-plus-noise ratio. Furthermore, the obtained PDF and CDF are exploited to evaluate important security performance of wireless communication including the secrecy outage probability, the probability of nonzero secrecy capacity, and the average secrecy rate. Monte-Carlo simulations are subsequently conducted to validate the accuracy of our analytical results. Compared with traditional MIMO systems, the RIS-aided system offers better performance in terms of physical layer security. In particular, the security performance is improved significantly by increasing the number of reflecting elements equipped in a RIS. H

Author

Zhang, Jiayi; Du, Hongyang; Sun, Qiang; Ai, Bo; Ng, Derrick Wing Kwan

Published

2020

Language

EN