Adaptive Power Factor Allocation for Cooperative Full-Duplex NOMA Systems with Imperfect SIC and Rate Fairness

Brena K. S. Lima, Daniel Benevides da Costa, F. Rafael M. Lima, Liang Yang, Rodolfo Oliveira, Ugo S. Dias

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)

Abstract

This paper investigates the performance of cooperative networks based on non-orthogonal multiple access (NOMA) with multiple full-duplex decode-and-forward relays. Taking into account rate fairness between the users and assuming imperfect successive interference cancellation (SIC), the problem is formulated so that power allocation is performed adaptively by the multiple relays in order to maximize the minimum users' achievable rate. We demonstrate that the proposed optimization problem is convex and a closed-form expression for the power allocation factor is derived. The attained results show that the proposed scheme achieves satisfactory results in terms of achievable rate, fairness, and outage probability when compared to other adaptive power allocation strategies.
Original languageEnglish
Article number9219185
Pages (from-to)14061-14066
Number of pages6
JournalIEEE Transactions on Vehicular Technology
Volume69
Issue number11
DOIs
Publication statusPublished - Nov 2020

Keywords

  • Full-duplex
  • NOMA
  • power allocation
  • rate fairness
  • relay selection

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