Quantized RIS-Aided Multi-User Secure Beamforming Against Multiple Eavesdroppers

H. D. Tuan; Ali A. Nasir; Y. Chen; E. Dutkiewicz; H. V. Poor

doi:10.1109/TIFS.2023.3298517

Quantized RIS-Aided Multi-User Secure Beamforming Against Multiple Eavesdroppers

H. D. Tuan^*, Ali A. Nasir, Y. Chen, E. Dutkiewicz, H. V. Poor

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

This paper focuses on a network scenario where a multi-antenna access point serves multiple single-antenna users in the presence of multiple eavesdroppers, with the aid of a reconfigurable intelligent surface (RIS). The RIS employs low-resolution programmable reflecting elements (PREs) for cost-effective implementation. In order to establish secure links for all users, we consider the joint design of the transmit beamformers and PREs to maximize either the geometric mean of secrecy rates or the worst user's secrecy rate. Novel computational algorithms of low computational complexity are developed for the solution of these mixed discrete continuous optimization problems. Simulations show the merit of the proposed designs in in achieving fair secrecy rate distributions and ensuring secure links for all users.

Original language	English
Pages (from-to)	4695-4706
Number of pages	12
Journal	IEEE Transactions on Information Forensics and Security
Volume	18
DOIs	https://doi.org/10.1109/TIFS.2023.3298517
State	Published - 2023

Bibliographical note

Publisher Copyright:
© 2005-2012 IEEE.

Keywords

Reconfigurable intelligent surface (RIS)
fairness
mixed discrete continuous optimization
physical layer security (PLS)
secrecy rate

ASJC Scopus subject areas

Safety, Risk, Reliability and Quality
Computer Networks and Communications

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10.1109/TIFS.2023.3298517

Cite this

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title = "Quantized RIS-Aided Multi-User Secure Beamforming Against Multiple Eavesdroppers",

abstract = "This paper focuses on a network scenario where a multi-antenna access point serves multiple single-antenna users in the presence of multiple eavesdroppers, with the aid of a reconfigurable intelligent surface (RIS). The RIS employs low-resolution programmable reflecting elements (PREs) for cost-effective implementation. In order to establish secure links for all users, we consider the joint design of the transmit beamformers and PREs to maximize either the geometric mean of secrecy rates or the worst user's secrecy rate. Novel computational algorithms of low computational complexity are developed for the solution of these mixed discrete continuous optimization problems. Simulations show the merit of the proposed designs in in achieving fair secrecy rate distributions and ensuring secure links for all users.",

keywords = "Reconfigurable intelligent surface (RIS), fairness, mixed discrete continuous optimization, physical layer security (PLS), secrecy rate",

author = "Tuan, {H. D.} and Nasir, {Ali A.} and Y. Chen and E. Dutkiewicz and Poor, {H. V.}",

note = "Publisher Copyright: {\textcopyright} 2005-2012 IEEE.",

year = "2023",

doi = "10.1109/TIFS.2023.3298517",

language = "English",

volume = "18",

pages = "4695--4706",

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publisher = "Institute of Electrical and Electronics Engineers Inc.",

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T1 - Quantized RIS-Aided Multi-User Secure Beamforming Against Multiple Eavesdroppers

AU - Tuan, H. D.

AU - Nasir, Ali A.

AU - Chen, Y.

AU - Dutkiewicz, E.

AU - Poor, H. V.

PY - 2023

Y1 - 2023

N2 - This paper focuses on a network scenario where a multi-antenna access point serves multiple single-antenna users in the presence of multiple eavesdroppers, with the aid of a reconfigurable intelligent surface (RIS). The RIS employs low-resolution programmable reflecting elements (PREs) for cost-effective implementation. In order to establish secure links for all users, we consider the joint design of the transmit beamformers and PREs to maximize either the geometric mean of secrecy rates or the worst user's secrecy rate. Novel computational algorithms of low computational complexity are developed for the solution of these mixed discrete continuous optimization problems. Simulations show the merit of the proposed designs in in achieving fair secrecy rate distributions and ensuring secure links for all users.

AB - This paper focuses on a network scenario where a multi-antenna access point serves multiple single-antenna users in the presence of multiple eavesdroppers, with the aid of a reconfigurable intelligent surface (RIS). The RIS employs low-resolution programmable reflecting elements (PREs) for cost-effective implementation. In order to establish secure links for all users, we consider the joint design of the transmit beamformers and PREs to maximize either the geometric mean of secrecy rates or the worst user's secrecy rate. Novel computational algorithms of low computational complexity are developed for the solution of these mixed discrete continuous optimization problems. Simulations show the merit of the proposed designs in in achieving fair secrecy rate distributions and ensuring secure links for all users.

KW - Reconfigurable intelligent surface (RIS)

KW - fairness

KW - mixed discrete continuous optimization

KW - physical layer security (PLS)

KW - secrecy rate

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DO - 10.1109/TIFS.2023.3298517

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SN - 1556-6013

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SP - 4695

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JO - IEEE Transactions on Information Forensics and Security

JF - IEEE Transactions on Information Forensics and Security

ER -

Quantized RIS-Aided Multi-User Secure Beamforming Against Multiple Eavesdroppers

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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