A PSO-Based Approach for User-Pairing Schemes in NOMA Systems: Theory and Applications

Antonino Masaracchia, Daniel Benevides Da Costa, Trung Q. Duong*, Minh Nghia Nguyen, Minh T. Nguyen

*Corresponding author for this work

Research output: Contribution to journalArticle

4 Citations (Scopus)
82 Downloads (Pure)

Abstract

This paper proposes an exhaustive analysis of a particle swarm optimization (PSO)-based configuration applied in non-orthogonal multiple access (NOMA) systems in order to perform user aggregation along different sub-channels. The idea behind this is to highlight the main characteristics of this PSO-based configuration for understanding how this policy enables the transmitter to require the minimum downlink transmitting power while guaranteeing the quality-of-service (QoS) constraint of each user. The analysis is carried out for two representative power-constrained scenarios, i.e., disaster relief network communications and unmanned aerial vehicle (UAV) communications, in which performing low-power transmissions represent an important aspect. Our results find applicability in the definition of explicit channel-state-aware strategies for user multiplexing in NOMA systems, which, at the date, represents a research field that remains to be investigated more in depth. Insightful discussions are provided from our analysis. For instance, depending on the number of available sub-channels and the channel gains experienced by each users along with the whole available bandwidth, it is shown how users must be multiplexed by the transmitter in order to reach the minimum transmitting power.

Original languageEnglish
Pages (from-to)90550-90564
Number of pages15
JournalIEEE Access
Volume7
Early online date03 Jul 2019
DOIs
Publication statusEarly online date - 03 Jul 2019

Keywords

  • NOMA
  • PSO
  • sub-band mapping
  • user-aggregation

ASJC Scopus subject areas

  • Computer Science(all)
  • Materials Science(all)
  • Engineering(all)

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