Secrecy Sum Rate Maximization in Non-orthogonal Multiple Access

Yi Zhang; Hui Ming Wang; Qian Yang; Zhiguo Ding

doi:10.1109/LCOMM.2016.2539162

Secrecy Sum Rate Maximization in Non-orthogonal Multiple Access

Yi Zhang
, Hui Ming Wang
, Qian Yang
, Zhiguo Ding

Electrical Engineering

Xi'an Jiaotong University

Research output: Contribution to journal › Article › peer-review

302 Scopus citations

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).

Original language	British English
Article number	7426798
Pages (from-to)	930-933
Number of pages	4
Journal	IEEE Communications Letters
Volume	20
Issue number	5
DOIs	https://doi.org/10.1109/LCOMM.2016.2539162
State	Published - May 2016

Keywords

Non-orthogonal multiple access
optimization
physical layer security
power allocation

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10.1109/LCOMM.2016.2539162

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title = "Secrecy Sum Rate Maximization in Non-orthogonal Multiple Access",

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).",

keywords = "Non-orthogonal multiple access, optimization, physical layer security, power allocation",

author = "Yi Zhang and Wang, \{Hui Ming\} and Qian Yang and Zhiguo Ding",

note = "Funding Information: The work was supported in part by the National Excellent Doctoral Dissertation of China under Grant 201340, in part by the New Century Excellent Talents Support Fund of China under Grant NCET-13-0458, and in part by the Young Talent Support Fund of Science and Technology of Shanxi Province under Grant 2015KJXX-01. The work of Z. Ding was supported in part by the U.K. EPSRC under Grant EP/L025272/1 and in part by H2020-MSCA-RISE-2015 under Grant 690750. Publisher Copyright: {\textcopyright} 2016 IEEE.",

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N1 - Funding Information: The work was supported in part by the National Excellent Doctoral Dissertation of China under Grant 201340, in part by the New Century Excellent Talents Support Fund of China under Grant NCET-13-0458, and in part by the Young Talent Support Fund of Science and Technology of Shanxi Province under Grant 2015KJXX-01. The work of Z. Ding was supported in part by the U.K. EPSRC under Grant EP/L025272/1 and in part by H2020-MSCA-RISE-2015 under Grant 690750. Publisher Copyright: © 2016 IEEE.

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N2 - 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).

AB - 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).

KW - Non-orthogonal multiple access

KW - optimization

KW - physical layer security

KW - power allocation

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Secrecy Sum Rate Maximization in Non-orthogonal Multiple Access

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Keywords

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