Dynamic Resource Allocation in Non-orthogonal Multiple Access Using Weighted Maximin Fairness Strategy for a UAV Network

Dhruba Raj Dhakal, Zhenni Pan, Megumi Saito, Shigeru Shimamoto*

*この研究の対応する著者

研究成果: Article査読

1 被引用数 (Scopus)

抄録

Non-orthogonal multiple access (NOMA) with power domain multiplexing and successive interference cancellation (SIC) is one of the promising technologies for future wireless communication. The performance of NOMA is highly dependent on resource allocation such as power allocation and channel assignment. In this paper, we investigate the power allocation (PA) scheme, to optimize the weighted maximin fairness (MMF) for 2-user and 3-user clusters. We utilize the particle swarm optimization (PSO) based algorithm for power allocation due to its promising behavior. Application area of NOMA is becoming broader, then, we considered a cellular network, assisted by an unmanned aerial vehicle (UAV) as the base station (BS) which is integrated with the NOMA system. The PA for weighted MMF problem in NOMA is non-convex, it is difficult to find out the optimal solution directly. Simulation results show the performance of PSO-based algorithm in different adaptive weights and its convergence characteristics. We have also shown that the rate and fairness tradeoff using weighted maximin fairness. Numerical results compare the performance of NOMA and orthogonal multiple access (OMA) and prove the significance of the proposed algorithm.

本文言語English
ページ(範囲)1397-1406
ページ数10
ジャーナルJournal of Signal Processing Systems
92
12
DOI
出版ステータスPublished - 2020 12月 1

ASJC Scopus subject areas

  • 制御およびシステム工学
  • 理論的コンピュータサイエンス
  • 信号処理
  • 情報システム
  • モデリングとシミュレーション
  • ハードウェアとアーキテクチャ

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