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Secure transmission via joint precoding optimization for downlink MISO NOMA

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Zhao, Nan, Li, Dongdong, Liu, Mingqian, Cao, Yang, Chen, Yunfei, Ding, Zhiguo and Wang, Xianbin (2019) Secure transmission via joint precoding optimization for downlink MISO NOMA. IEEE Transactions on Vehicular Technology, 68 (8). 7603 -7615. doi:10.1109/TVT.2019.2920144 ISSN 0018-9545.

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Official URL: https://doi.org/10.1109/TVT.2019.2920144

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Abstract

Non-orthogonal multiple access (NOMA) is a prospective technology for radio resource constrained future mobile networks. However, NOMA users far from base station (BS) tend to be more susceptible to eavesdropping because they are allocated more transmit power. In this paper, we aim to jointly optimize the precoding vectors at BS to ensure the legitimate security in a downlink multiple-input single-output (MISO) NOMA network. When the eavesdropping channel state information (CSI) is available at BS, we can maximize the sum secrecy rate by joint precoding optimization. Owing to its non-convexity, the problem is converted into a convex one, which is solved by a second-order cone programming based iterative algorithm. When the CSI of the eavesdropping channel is not available, we first consider the case that the secure user is not the farthest from BS, and the transmit power of the farther users is maximized via joint precoding optimization to guarantee its security. Then, we consider the case when the farthest user from BS requires secure transmission, and the modified successive interference cancellation order and joint precoding optimization can be adopted to ensure its security. Similar method can be exploited to solve the two non-convex problems when the CSI is unknown. Simulation results demonstrate that the proposed schemes can improve the security performance for MISO NOMA systems effectively, with and without eavesdropping CSI.

Item Type: Journal Article
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Science, Engineering and Medicine > Engineering > Engineering
Library of Congress Subject Headings (LCSH): Wireless communication systems -- Security measures
Journal or Publication Title: IEEE Transactions on Vehicular Technology
Publisher: IEEE
ISSN: 0018-9545
Official Date: August 2019
Dates:
DateEvent
August 2019Published
31 May 2019Available
27 May 2019Accepted
Volume: 68
Number: 8
Page Range: 7603 -7615
DOI: 10.1109/TVT.2019.2920144
Status: Peer Reviewed
Publication Status: Published
Reuse Statement (publisher, data, author rights): © 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
Date of first compliant deposit: 28 May 2019
Date of first compliant Open Access: 30 May 2019
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
61871065[NSFC] National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809
201806965031China Scholarship Councilhttp://dx.doi.org/10.13039/501100004543
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 Marie Skłodowska-Curie Actionshttp://dx.doi.org/10.13039/100010665
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