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Beamforming and jamming optimization for IRS-aided secure NOMA networks
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Wang, Wei, Liu, Xin, Tang, Jie, Zhao, Nan, Chen, Yunfei, Ding, Zhiguo and Wang, Xianbin (2021) Beamforming and jamming optimization for IRS-aided secure NOMA networks. IEEE Transactions on Wireless Communications . doi:10.1109/TWC.2021.3104856 (In Press)
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Official URL: https://doi.org/10.1109/TWC.2021.3104856
Abstract
The integration of intelligent reflecting surface (IRS) and multiple access provides a promising solution to improved coverage and massive connections at low cost. However, securing IRS-aided networks remains a challenge since the potential eavesdropper also has access to an additional IRS reflection link, especially when the eavesdropping channel state information is unknown. In this paper, we propose an IRS-assisted non-orthogonal multiple access (NOMA) scheme to achieve secure communication via artificial jamming, where the multi-antenna base station sends the NOMA and jamming signals together to the legitimate users with the assistance of IRS, in the presence of a passive eavesdropper. The sum rate of legitimate users is maximized by optimizing the transmit beamforming, the jamming vector and the IRS reflecting vector, satisfying the quality of service requirement, the IRS reflecting constraint and the successive interference cancellation (SIC) decoding condition. In addition, the received jamming power is adapted at the highest level at all legitimate users for successful cancellation via SIC. To tackle this non-convex optimization problem, we first decompose it into two subproblems, and then each subproblem is converted into a convex one using successive convex approximation. An alternate optimization algorithm is proposed to solve them iteratively. Numerical results show that the secure transmission in the proposed IRS-NOMA scheme can be effectively guaranteed with the assistance of artificial jamming.
| Item Type: | Journal Article | |||||||||
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| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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| Divisions: | Faculty of Science > Engineering | |||||||||
| Library of Congress Subject Headings (LCSH): | Wireless communication systems, Wireless communication systems -- Security measures, Mobile communication systems, Wireless sensor networks, Surfaces (Technology), Beamforming | |||||||||
| Journal or Publication Title: | IEEE Transactions on Wireless Communications | |||||||||
| Publisher: | IEEE | |||||||||
| ISSN: | 1536-1276 | |||||||||
| Official Date: | 2021 | |||||||||
| Dates: |
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| DOI: | 10.1109/TWC.2021.3104856 | |||||||||
| Status: | Peer Reviewed | |||||||||
| Publication Status: | In Press | |||||||||
| Publisher Statement: | © 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. | |||||||||
| Access rights to Published version: | Restricted or Subscription Access | |||||||||
| RIOXX Funder/Project Grant: |
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