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Privacy preservation via beamforming for NOMA
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Cao, Yang, Zhao, Nan, Chen, Yunfei, Jin, Minglu, Fan, Lisheng, Ding, Zhiguo and Yu, F.Richard (2019) Privacy preservation via beamforming for NOMA. IEEE Transactions on Wireless Communications . (In Press)
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WRAP-privacy-preservation-via-beamforming-NOMA-Chen-2019.pdf - Accepted Version - Requires a PDF viewer. Download (3969Kb) | Preview |
Abstract
Non-orthogonal multiple access (NOMA) has been proposed as a promising multiple access approach for 5G mobile systems because of its superior spectrum efficiency. However, the privacy between the NOMA users may be compromised due to the transmission of a superposition of all users’ signals to successive interference cancellation (SIC) receivers. In this paper, we propose two schemes based on beamforming optimization for NOMA that can enhance the security of a specific private user while guaranteeing the other users’ quality of service (QoS). Specifically, in the first scheme, when the transmit antennas are inadequate, we intend to maximize the secrecy rate of the private user, under the constraint that the other users’ QoS is satisfied. In the second scheme, the private user’s signal is zero-forced at the other users when redundant antennas are available. In this case, the transmission rate of the private user is also maximized while satisfying the QoS of the other users. Due to the nonconvexity of optimization in these two schemes, we first convert them into convex forms and then, an iterative algorithm based on the ConCave-Convex Procedure is proposed to obtain their solutions. Extensive simulation results are presented to evaluate the effectiveness of the proposed schemes
| Item Type: | Journal Article | ||||||||||||||||||||||||
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| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | ||||||||||||||||||||||||
| Divisions: | Faculty of Science > Engineering | ||||||||||||||||||||||||
| Library of Congress Subject Headings (LCSH): | Multiple access protocols (Computer network protocols), Multiplexing | ||||||||||||||||||||||||
| Journal or Publication Title: | IEEE Transactions on Wireless Communications | ||||||||||||||||||||||||
| Publisher: | IEEE | ||||||||||||||||||||||||
| ISSN: | 1536-1276 | ||||||||||||||||||||||||
| Official Date: | 7 May 2019 | ||||||||||||||||||||||||
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| Date of first compliant deposit: | 9 May 2019 | ||||||||||||||||||||||||
| Status: | Peer Reviewed | ||||||||||||||||||||||||
| Publication Status: | In Press | ||||||||||||||||||||||||
| Publisher Statement: | © 2019 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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