Joint User Pairing and Power Allocation with Compressive Sensing in NOMA Systems

Ahmed Nasser, Osamu Muta, Haris Gacanin, Maha Elsabrouty

研究成果: Contribution to journalArticle査読

抄録

In this letter, we propose a novel low-complexity user pairing (UP) and power allocation (PA) technique utilizing the compressive sensing (CS) theory for non-orthogonal multiple access (NOMA) systems. In the proposed scheme, we formulate the joint UP and PA optimization problem in NOMA systems as a relaxed sparse l_{1} -norm problem, based on the fact that a limited, i.e., 'sparse,' number of users has to be paired among a large number of users over a dedicated resource block (RB). By exploiting this inherent sparsity property, we can obtain a near-optimal solution by relaxing the original NP-hard problem of joint UP and PA. Then, a CS technique is proposed to find a solution for the relaxed problem. Simulation results validate the effectiveness of our proposed idea regarding the sum-rate and the reduced complexity compared to the state-of-the-art schemes.

本文言語英語
論文番号9194721
ページ(範囲)151-155
ページ数5
ジャーナルIEEE Wireless Communications Letters
10
1
DOI
出版ステータス出版済み - 1 2021

All Science Journal Classification (ASJC) codes

  • 制御およびシステム工学
  • 電子工学および電気工学

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