On the Impacts of Phase Shifting Design and Eavesdropping Uncertainty on Secrecy Metrics of RIS-aided Systems

被引：2

作者：

Kong, Long ^{[1
]}

Kisseleff, Steven ^{[2
]}

Chatzinotas, Symeon ^{[2
]}

Ottersten, Bjorn ^{[2
]}

Erol-Kantarci, Melike ^{[1
]}

机构：

[1] Univ Ottawa, Sch Elect Engn & Comp Sci, Ottawa, ON, Canada

[2] Univ Luxembourg, Interdisciplinary Ctr Secur Reliabil & Trust SnT, Luxembourg, Luxembourg

来源：

2022 JOINT EUROPEAN CONFERENCE ON NETWORKS AND COMMUNICATIONS & 6G SUMMIT (EUCNC/6G SUMMIT) | 2022年

关键词：

Reconfigurable intelligent surfaces (RISs); physical layer security (PLS); eavesdropping location uncertainty; random discrete phase shifting; imperfect coherent phase shifting; RECONFIGURABLE INTELLIGENT SURFACES; PHYSICAL LAYER SECURITY; PERFORMANCE ANALYSIS; ENHANCEMENT;

D O I：

10.1109/EuCNC/6GSummit54941.2022.9815614

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper investigates the secrecy outage probability (SOP), the lower bound of SOP, and the probability of non-zero secrecy capacity (PNZ) of reconfigurable intelligent surface (RIS)-assisted systems from an information-theoretic perspective. In particular, we consider the impacts of eavesdroppers' location uncertainty and the phase adjustment uncertainty, namely imperfect coherent phase shifting and discrete phase shifting on RIS. More specifically, analytical and simulation results are presented to show that (i) the SOP gain due to the increase of the RIS reflecting elements number gradually decreases; and (ii) both phase shifting designs demonstrate the same PNZ secrecy performance, in other words, the random discrete phase shifting outperforms the imperfect coherent phase shifting design with reduced complexity.

引用

页码：494 / 499

页数：6