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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, 18 (7). pp. 3599-3612. doi:10.1109/TWC.2019.2916363

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Official URL: https://doi.org/10.1109/TWC.2019.2916363

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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
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: July 2019
Dates:
DateEvent
July 2019Published
20 May 2019Available
7 May 2019Accepted
Volume: 18
Number: 7
Page Range: pp. 3599-3612
DOI: 10.1109/TWC.2019.2916363
Status: Peer Reviewed
Publication Status: Published
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:
Project/Grant IDRIOXX Funder NameFunder ID
61871065[NSFC] National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809
61871139[NSFC] National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809
ISN19-02State Key Laboratory of Integrated Services NetworksUNSPECIFIED
UNSPECIFIEDXinghai Scholars ProgramUNSPECIFIED
EP/L025272/2[EPSRC] Engineering and Physical Sciences Research Councilhttp://dx.doi.org/10.13039/501100000266
61728101[NSFC] National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809
690750H2020 European Research Councilhttp://dx.doi.org/10.13039/100010663
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