Article (Périodiques scientifiques)
RIS-Assisted Robust Hybrid Beamforming AgainstSimultaneous Jamming and Eavesdropping Attacks
Sun, Yifu; An, Kang; Zhu, Yonggang et al.
2022In IEEE Transactions on Wireless Communications, 21 (11), p. 9212 - 9231
Peer reviewed vérifié par ORBi
 

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Résumé :
[en] Wireless communications are increasingly vulnera-ble to simultaneous jamming and eavesdropping attacks due tothe inherent broadcast nature of wireless channels. With thisfocus, due to the potential of reconfigurable intelligent surface(RIS) in substantially saving power consumption and boostinginformation security, this paper is the first work to investigate theeffect of the RIS-assisted wireless transmitter in improving boththe spectrum efficiency and the security of multi-user cellularnetwork. Specifically, with the imperfect angular channel stateinformation (CSI), we aim to address the worst-case sum ratemaximization problem by jointly designing the receive decoder atthe users, both the digital precoder and the artificial noise (AN)at the base station (BS), and the analog precoder at the RIS, whilemeeting the minimum achievable rate constraint, the maximumwiretap rate requirement, and the maximum power constraint.To address the non-convexity of the formulated problem, we firstpropose an alternative optimization (AO) method to obtain anefficient solution. In particular, a heuristic scheme is proposedto convert the imperfect angular CSI into a robust one andfacilitate the developing a closed-form solution to the receivedecoder. Then, after reformulating the original problem into atractable one by exploiting the majorization-minimization (MM)method, the digital precoder and AN can be addressed by thequadratically constrained quadratic programming (QCQP), andthe RIS-aided analog precoder is solved by the proposed pricemechanism-based Riemannian manifold optimization (RMO).To further reduce the computational complexity of the pro-posed AO method and gain more insights, we develop a low-complexity monotonic optimization algorithm combined with thedual method (MO-dual) to identify the closed-form solution.Numerical simulations using realistic RIS and communicationmodels demonstrate the superiority and validity of our proposedschemes over the existing benchmark schemes.
Disciplines :
Sciences informatiques
Auteur, co-auteur :
Sun, Yifu
An, Kang
Zhu, Yonggang
Zhen, Gan
Wong, Kai-Kit
CHATZINOTAS, Symeon  ;  University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) > SigCom
Yin, Haifan
Liu, Pengtao
Co-auteurs externes :
yes
Langue du document :
Anglais
Titre :
RIS-Assisted Robust Hybrid Beamforming AgainstSimultaneous Jamming and Eavesdropping Attacks
Date de publication/diffusion :
novembre 2022
Titre du périodique :
IEEE Transactions on Wireless Communications
ISSN :
1536-1276
eISSN :
1558-2248
Maison d'édition :
Institute of Electrical and Electronics Engineers, New York, Etats-Unis - New York
Volume/Tome :
21
Fascicule/Saison :
11
Pagination :
9212 - 9231
Peer reviewed :
Peer reviewed vérifié par ORBi
Focus Area :
Computational Sciences
Disponible sur ORBilu :
depuis le 13 décembre 2022

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