Secure Wireless Communication in RIS-Aided MISO System With Hardware Impairments

Zhou, Gui, Pan, Cunhua, Ren, Hong, Wang, Kezhi and Peng, Zhangjie (2021) Secure Wireless Communication in RIS-Aided MISO System With Hardware Impairments. IEEE Wireless Communications Letters, 10 (6). pp. 1309-1313. ISSN 2162-2337

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In practice, residual transceiver hardware impairments inevitably lead to distortion noise which causes the performance loss. In this letter, we study the robust transmission design for a reconfigurable intelligent surface (RIS)-aided secure communication system in the presence of transceiver hardware impairments. We aim for maximizing the secrecy rate while ensuring the transmit power constraint on the active beamforming at the base station and the unit-modulus constraint on the passive beamforming at the RIS. To address this problem, we adopt the alternate optimization method to iteratively optimize one set of variables while keeping the other set fixed. Specifically, the successive convex approximation (SCA) method is used to solve the active beamforming optimization subproblem, while the passive beamforming is obtained by using the semidefinite program (SDP) method. Numerical results illustrate that the proposed transmission design scheme is more robust to the hardware impairments than the conventional non-robust scheme that ignores the impact of the hardware impairments.

Item Type: Article
Additional Information: Funding Information: NSFC Grant 61701307 National Mobile Communications Research Laboratory, Southeast University Grant 2018D14
Uncontrolled Keywords: hardware Impairments, Intelligent reflecting surface (IRS), reconfigurable intelligent surface (RIS), secure communication
Subjects: G500 Information Systems
H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Computer and Information Sciences
Depositing User: Rachel Branson
Date Deposited: 13 Jan 2022 09:25
Last Modified: 13 Jan 2022 09:30

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