Wireless energy harvesting with cooperative relaying under the best relay selection scheme

Research output: Contribution to journalArticle

Abstract

One of the most notable challenges in wireless communications is energy scarcity, which has attracted considerable attention in Fifth Generation (5G) wireless network research. This paper investigates the performance of energy harvesting (EH) relays under the best relay selection (BRS) scheme. The results show degradation of spectral efficiency (SE) due to EH relaying compared with conventional cooperative relaying (CR). Conversely, EH relaying provides a positive gain compared with conventional CR, increasing the lifetime of the network and decreasing energy consumption (EC) and operational cost. Moreover, the EH relaying network has better energy efficiency (EE) compared with conventional relaying networks. Results show that when EH relaying is applied, EE is improved through an increased number of relays. Finally, the SE-EE metric is presented for both conventional and EH relays. Results show that the performance of the proposed technique was able to achieve a maximum SE of 1.4 bits/s/Hz and maximum EE at 0.6 bits/s/Hz, and for the case of conventional relays, a maximum SE of 2 bits/s/Hz and EE at 1.1 bits/s/Hz. This result implies that the proposed EH scheme provides an optimum solution for energy-constrained wireless CR systems.

Original languageEnglish
Article number892
JournalEnergies
Volume12
Issue number5
DOIs
Publication statusPublished - 1 Jan 2019

Fingerprint

Cooperative Relaying
Relay Selection
Energy Harvesting
Energy harvesting
Energy Efficiency
Spectral Efficiency
Energy efficiency
Relay
Energy
Wireless Communication
Wireless Networks
Energy Consumption
Wireless networks
Lifetime
Degradation
Energy utilization
Imply
Metric
Communication
Costs

Keywords

  • Energy efficiency
  • Energy harvesting
  • Outage probability
  • Simultaneous wireless information and power transfer
  • Spectral efficiency

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

Wireless energy harvesting with cooperative relaying under the best relay selection scheme. / Andrawes, Admoon; Nordin, Rosdiadee; Ismail, Mahamod.

In: Energies, Vol. 12, No. 5, 892, 01.01.2019.

Research output: Contribution to journalArticle

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