Uplink power control scheme for spectral efficiency maximization in NOMA systems

Bilal Ur Rehman; Mohammad Inayatullah Babar; Gamil Abdel Azim; Muhammad Amir; Hesham Alhumyani; Mohammed S. Alzaidi; Majid Alshammari; Rashid Saeed

Alexandria Engineering Journal (Feb 2023)

Uplink power control scheme for spectral efficiency maximization in NOMA systems

Bilal Ur Rehman,
Mohammad Inayatullah Babar,
Gamil Abdel Azim,
Muhammad Amir,
Hesham Alhumyani,
Mohammed S. Alzaidi,
Majid Alshammari,
Rashid Saeed

Affiliations

Bilal Ur Rehman: Department of Electrical Engineering, Faculty of Electrical and Computer Engineering, University of Engineering and Technology, Peshawar, Pakistan; Corresponding author.
Mohammad Inayatullah Babar: Department of Electrical Engineering, Faculty of Electrical and Computer Engineering, University of Engineering and Technology, Peshawar, Pakistan
Gamil Abdel Azim: Department of Computer Science, Faculty of Computer Science, Canal Suez University, Egypt
Muhammad Amir: Department of Electrical Engineering, Faculty of Electrical and Computer Engineering, University of Engineering and Technology, Peshawar, Pakistan
Hesham Alhumyani: Department of Computer Engineering, College of Computers and Information Technology, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
Mohammed S. Alzaidi: Department of Electrical Engineering, College of Engineering, Taif University, Taif 21944, Saudi Arabia
Majid Alshammari: Department of Information Technology, College of Computers and Information Technology, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
Rashid Saeed: Department of Computer Engineering, Taif University, Saudi Arabia

Journal volume & issue: Vol. 64
pp. 667 – 677

Abstract

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Non-orthogonal multiple access (NOMA) has recently gained much research attention as a possible multiple access solution for fifth-generation (5G) wireless communication. The NOMA can further enhance spectral performance compared with orthogonal multiple access (OMA). This paper focuses on the joint optimization problem of power control and user grouping by considering the uplink NOMA system. The power control issues are solved using a linear programming approach and three alternative algorithms solve user grouping: Randomly, 2-Opt, and the Hybrid. The numerical results show that the proposed solution for power control and user-grouping achieves significant spectral performance compared to OMA and existing schemes reported in the literature with lower system complexity for uplink NOMA systems.

Published in Alexandria Engineering Journal

ISSN: 1110-0168 (Print); 2090-2670 (Online)
Publisher: Elsevier
Country of publisher: Egypt
LCC subjects: Technology: Engineering (General). Civil engineering (General)
Website: http://www.journals.elsevier.com/alexandria-engineering-journal/

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