Secrecy Performance Analysis and Optimization of Intelligent Reflecting Surface-Aided Indoor Wireless Communications

This paper studies the secrecy performance of an intelligent reflecting surface (IRS)-aided indoor wireless communication where the IRS is capable of adjusting the direction and phase shift of reflected signal on its surface and assists a source to communicate with an authenticated user in the prese...

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Main Authors: Van Phu Tuan, Ic Pyo Hong
Format: Article
Language:English
Published: IEEE 2020-01-01
Series:IEEE Access
Subjects:
Online Access:https://ieeexplore.ieee.org/document/9116951/
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author Van Phu Tuan
Ic Pyo Hong
author_facet Van Phu Tuan
Ic Pyo Hong
author_sort Van Phu Tuan
collection DOAJ
description This paper studies the secrecy performance of an intelligent reflecting surface (IRS)-aided indoor wireless communication where the IRS is capable of adjusting the direction and phase shift of reflected signal on its surface and assists a source to communicate with an authenticated user in the presence of several unauthenticated users, which can be potential eavesdroppers. The goal of this paper is to design a tile-allocation-and-phase-shift-adjustment (TAaPSA) strategy for the IRS to optimize the average secrecy rate (ASR); moreover, the respective secrecy outage probability (SOP) for this TAaPSA is evaluated. To achieve this goal, the ray model and the Rice distribution are adopted to describe the propagation of the IRS's reflected signals and the fading process, respectively. Closed-form analytical expressions for the ASR and the SOP are derived. Using these analytical results, a genetic algorithm (GA) is utilized to find an optimal TAaPSA strategy for the IRS. The accuracy of the analytical results and the improvement in ASR using GA-based TAaPSA strategy are verified by simulation results.
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spelling doaj.art-b2a56ca0111c4de38524edcd9adef7762022-12-21T22:20:36ZengIEEEIEEE Access2169-35362020-01-01810944010945210.1109/ACCESS.2020.30023829116951Secrecy Performance Analysis and Optimization of Intelligent Reflecting Surface-Aided Indoor Wireless CommunicationsVan Phu Tuan0https://orcid.org/0000-0003-1844-8471Ic Pyo Hong1https://orcid.org/0000-0003-1875-5420Department of Information and Communication Engineering, Kongju National University, Cheonan, South KoreaDepartment of Information and Communication Engineering, Kongju National University, Cheonan, South KoreaThis paper studies the secrecy performance of an intelligent reflecting surface (IRS)-aided indoor wireless communication where the IRS is capable of adjusting the direction and phase shift of reflected signal on its surface and assists a source to communicate with an authenticated user in the presence of several unauthenticated users, which can be potential eavesdroppers. The goal of this paper is to design a tile-allocation-and-phase-shift-adjustment (TAaPSA) strategy for the IRS to optimize the average secrecy rate (ASR); moreover, the respective secrecy outage probability (SOP) for this TAaPSA is evaluated. To achieve this goal, the ray model and the Rice distribution are adopted to describe the propagation of the IRS's reflected signals and the fading process, respectively. Closed-form analytical expressions for the ASR and the SOP are derived. Using these analytical results, a genetic algorithm (GA) is utilized to find an optimal TAaPSA strategy for the IRS. The accuracy of the analytical results and the improvement in ASR using GA-based TAaPSA strategy are verified by simulation results.https://ieeexplore.ieee.org/document/9116951/Physical layer securityintelligent reflecting surfaceaverage secrecy ratesecrecy outage probabilitygenetic algorithm
spellingShingle Van Phu Tuan
Ic Pyo Hong
Secrecy Performance Analysis and Optimization of Intelligent Reflecting Surface-Aided Indoor Wireless Communications
IEEE Access
Physical layer security
intelligent reflecting surface
average secrecy rate
secrecy outage probability
genetic algorithm
title Secrecy Performance Analysis and Optimization of Intelligent Reflecting Surface-Aided Indoor Wireless Communications
title_full Secrecy Performance Analysis and Optimization of Intelligent Reflecting Surface-Aided Indoor Wireless Communications
title_fullStr Secrecy Performance Analysis and Optimization of Intelligent Reflecting Surface-Aided Indoor Wireless Communications
title_full_unstemmed Secrecy Performance Analysis and Optimization of Intelligent Reflecting Surface-Aided Indoor Wireless Communications
title_short Secrecy Performance Analysis and Optimization of Intelligent Reflecting Surface-Aided Indoor Wireless Communications
title_sort secrecy performance analysis and optimization of intelligent reflecting surface aided indoor wireless communications
topic Physical layer security
intelligent reflecting surface
average secrecy rate
secrecy outage probability
genetic algorithm
url https://ieeexplore.ieee.org/document/9116951/
work_keys_str_mv AT vanphutuan secrecyperformanceanalysisandoptimizationofintelligentreflectingsurfaceaidedindoorwirelesscommunications
AT icpyohong secrecyperformanceanalysisandoptimizationofintelligentreflectingsurfaceaidedindoorwirelesscommunications