Secrecy sum rate maximization in non-orthogonal multiple access

Zhang, Yi and Wang, Hui-Ming and Yang, Qian and Ding, Zhiguo (2016) Secrecy sum rate maximization in non-orthogonal multiple access. IEEE Communications Letters, 20 (5). pp. 930-933. ISSN 1089-7798

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Abstract

Non-orthogonal multiple access (NOMA) has been recognized as a promising technique for providing high data rates in 5G systems. This letter is to study physical layer security in a single-input single-output (SISO) NOMA system consisting of a transmitter, multiple legitimate users and an eavesdropper. The aim of this letter is to maximize the secrecy sum rate (SSR) of the NOMA system subject to the users' quality of service (QoS) requirements. We firstly identify the feasible region of the transmit power for satisfying all users' QoS requirements. Then we derive the closed-form expression of an optimal power allocation policy that maximizes the SSR. Numerical results are provided to show a significant SSR improvement by NOMA compared with conventional orthogonal multiple access (OMA).

Item Type:
Journal Article
Journal or Publication Title:
IEEE Communications Letters
Additional Information:
©2016 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2200/2208
Subjects:
ID Code:
80013
Deposited By:
Deposited On:
15 Jun 2016 12:30
Refereed?:
Yes
Published?:
Published
Last Modified:
30 Sep 2020 06:25