Novel SWIPT Schemes for 5G Wireless Networks

Akashkumar Rajaram, Rabia Khan, Selvakumar Tharranetharan, Dushantha Nalin K. Jayakody, Rui Dinis, Stefan Panic

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

In this paper, we present a few novel simultaneous wireless information and power transfer (SWIPT) schemes that can be effectively used in various 5G wireless network implementations. First, we study the possibility of integrating distributed energy beamforming with the data rate fairness beamforming in a cooperative communication system with multiple cooperative relays and multiple destination users communicating simultaneously. We show that the system exploits significant performance gain using such a joint energy and data rate fairness beamforming scheme. Further, we propose an enhanced version of the SWIPT scheme, the energy-efficient modulation-based non-orthogonal multiple access (M-NOMA) SWIPT scheme, and observe its system efficiency in terms of more harvested energy. Finally, we consider an energy-harvesting SWIPT scheme where the channel response is estimated using the energy-harvesting signal as pilots superimposed on the information signal. For such a scheme, we compute the optimum transmit power ratio between the pilot and information signals under varying SNR conditions and improve the accuracy of the decoding process at the reception.

Original languageEnglish
JournalSensors (Basel, Switzerland)
Volume19
Issue number5
DOIs
Publication statusPublished - 7 Mar 2019

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Keywords

  • channel estimation
  • cooperative communications
  • M-NOMA
  • receiver design
  • SWIPT
  • WPT

ASJC Scopus subject areas

  • Analytical Chemistry
  • Atomic and Molecular Physics, and Optics
  • Biochemistry
  • Instrumentation
  • Electrical and Electronic Engineering

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