Energy-efficient downlink for non-orthogonal multiple access with SWIPT under constrained throughput

Research output: Contribution to journalArticle

Abstract

Non-Orthogonal Multiple Access (NOMA) has been proposed recently as an emerging radio access technology for the Fifth Generation (5G) to achieve high spectral efficiency (SE). In addition, simultaneous wireless information and power transfer (SWIPT) has been receiving exceptional attention because of its role in increasing energy efficiency (EE). In this paper, the performance of the downlink SWIPT-NOMA system has been evaluated. In this paper, signal to interference and noise ratio (SINR) is derived for near and far users with outage probability for each user, where the near user acts as an energy harvesting (EH) node. The Genetic algorithm (GA) is used as an optimization technique for the power splitting ratio and power allocation coefficients to maximize the EE under eligible SE. The outage probability for the near and far user is taken into consideration for the optimization process. In this work, the results from the SE-EE metric show that the maximum EE reached 0.325 Mbits/J at SE of 9 bits/sec/Hz.

Original languageEnglish
Article number110
JournalEnergies
Volume13
Issue number1
DOIs
Publication statusPublished - 24 Dec 2019

Fingerprint

Spectral Efficiency
Multiple Access
Energy Efficiency
Energy Efficient
Energy efficiency
Throughput
Outage Probability
Outages
Energy Harvesting
Energy harvesting
Power Allocation
Process Optimization
Optimization Techniques
High Efficiency
Genetic algorithms
Interference
Maximise
Genetic Algorithm
Metric
Coefficient

Keywords

  • Energy efficiency
  • Energy harvesting
  • NOMA
  • Spectral efficiency
  • SWIPT

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Energy (miscellaneous)
  • Control and Optimization
  • Electrical and Electronic Engineering

Cite this

Energy-efficient downlink for non-orthogonal multiple access with SWIPT under constrained throughput. / Andrawes, Admoon; Nordin, Rosdiadee; Abdullah, Nor Fadzilah.

In: Energies, Vol. 13, No. 1, 110, 24.12.2019.

Research output: Contribution to journalArticle

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