Intelligent Reflecting Surface Enhanced Millimeter-Wave NOMA Systems

Jiakuo Zuo; Yuanwei Liu; Ertugrul Basar; Octavia A. Dobre

doi:10.1109/LCOMM.2020.3009158

Intelligent Reflecting Surface Enhanced Millimeter-Wave NOMA Systems

Jiakuo Zuo, Yuanwei Liu, Ertugrul Basar, Octavia A. Dobre

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

79 Citations (Scopus)

Abstract

In this letter, a downlink intelligent reflecting surface (IRS) enhanced millimeter-wave (mmWave) non-orthogonal multiple access (NOMA) system is considered. A joint optimization problem over active beamforming, passive beamforming and power allocation is formulated. Due to the highly coupled variables, the formulated optimization problem is non-convex. To solve this problem, an alternative optimization and successive convex approximation based iterative algorithm is proposed. Numerical results illustrate that: 1) the proposed scheme offers significant sum-rate gains, which confirms the effectiveness of introducing IRS for mmWave-NOMA systems; 2) the proposed algorithm with discrete phase shifts can achieve close performance to that of continuous phase shifts.

Original language	English
Article number	9140006
Pages (from-to)	2632-2636
Number of pages	5
Journal	IEEE Communications Letters
Volume	24
Issue number	11
DOIs	https://doi.org/10.1109/LCOMM.2020.3009158
Publication status	Published - Nov 2020
Externally published	Yes
Publication type	A1 Journal article-refereed

Keywords

beamforming
Iintelligent reflecting surface
millimeter-wave
non-orthogonal multiple access

ASJC Scopus subject areas

Modelling and Simulation
Computer Science Applications
Electrical and Electronic Engineering

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10.1109/LCOMM.2020.3009158

Cite this

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title = "Intelligent Reflecting Surface Enhanced Millimeter-Wave NOMA Systems",

abstract = "In this letter, a downlink intelligent reflecting surface (IRS) enhanced millimeter-wave (mmWave) non-orthogonal multiple access (NOMA) system is considered. A joint optimization problem over active beamforming, passive beamforming and power allocation is formulated. Due to the highly coupled variables, the formulated optimization problem is non-convex. To solve this problem, an alternative optimization and successive convex approximation based iterative algorithm is proposed. Numerical results illustrate that: 1) the proposed scheme offers significant sum-rate gains, which confirms the effectiveness of introducing IRS for mmWave-NOMA systems; 2) the proposed algorithm with discrete phase shifts can achieve close performance to that of continuous phase shifts.",

keywords = "beamforming, Iintelligent reflecting surface, millimeter-wave, non-orthogonal multiple access",

author = "Jiakuo Zuo and Yuanwei Liu and Ertugrul Basar and Dobre, \{Octavia A.\}",

note = "Publisher Copyright: {\textcopyright} 1997-2012 IEEE.",

year = "2020",

month = nov,

doi = "10.1109/LCOMM.2020.3009158",

language = "English",

volume = "24",

pages = "2632--2636",

journal = "IEEE Communications Letters",

issn = "1089-7798",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "11",

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TY - JOUR

T1 - Intelligent Reflecting Surface Enhanced Millimeter-Wave NOMA Systems

AU - Zuo, Jiakuo

AU - Liu, Yuanwei

AU - Basar, Ertugrul

AU - Dobre, Octavia A.

PY - 2020/11

Y1 - 2020/11

N2 - In this letter, a downlink intelligent reflecting surface (IRS) enhanced millimeter-wave (mmWave) non-orthogonal multiple access (NOMA) system is considered. A joint optimization problem over active beamforming, passive beamforming and power allocation is formulated. Due to the highly coupled variables, the formulated optimization problem is non-convex. To solve this problem, an alternative optimization and successive convex approximation based iterative algorithm is proposed. Numerical results illustrate that: 1) the proposed scheme offers significant sum-rate gains, which confirms the effectiveness of introducing IRS for mmWave-NOMA systems; 2) the proposed algorithm with discrete phase shifts can achieve close performance to that of continuous phase shifts.

AB - In this letter, a downlink intelligent reflecting surface (IRS) enhanced millimeter-wave (mmWave) non-orthogonal multiple access (NOMA) system is considered. A joint optimization problem over active beamforming, passive beamforming and power allocation is formulated. Due to the highly coupled variables, the formulated optimization problem is non-convex. To solve this problem, an alternative optimization and successive convex approximation based iterative algorithm is proposed. Numerical results illustrate that: 1) the proposed scheme offers significant sum-rate gains, which confirms the effectiveness of introducing IRS for mmWave-NOMA systems; 2) the proposed algorithm with discrete phase shifts can achieve close performance to that of continuous phase shifts.

KW - beamforming

KW - Iintelligent reflecting surface

KW - millimeter-wave

KW - non-orthogonal multiple access

U2 - 10.1109/LCOMM.2020.3009158

DO - 10.1109/LCOMM.2020.3009158

M3 - Article

AN - SCOPUS:85096176184

SN - 1089-7798

VL - 24

SP - 2632

EP - 2636

JO - IEEE Communications Letters

JF - IEEE Communications Letters

IS - 11

M1 - 9140006

ER -

Intelligent Reflecting Surface Enhanced Millimeter-Wave NOMA Systems

Abstract

Keywords

ASJC Scopus subject areas

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