RIS-Empowered Non-Linear Energy Harvesting Communications Over Nakagami-m Channels


Alakoca H., Babaei M., Durak Ata L., Basar E.

IEEE COMMUNICATIONS LETTERS, vol.26, no.9, pp.2215-2219, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 26 Issue: 9
  • Publication Date: 2022
  • Doi Number: 10.1109/lcomm.2022.3182482
  • Journal Name: IEEE COMMUNICATIONS LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, PASCAL, Aerospace Database, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.2215-2219
  • Keywords: Average harvested power, energy harvesting, outage probability, reconfigurable intelligent surfaces, INFORMATION
  • Istanbul Technical University Affiliated: Yes

Abstract

We propose novel reconfigurable-intelligent-surface (RIS)-based energy harvesting (EH) systems with linear EH (L-EH) and non-linear EH (NL-EH) models where channels are exposed to Nakagami-m fading. We also compare two RIS-based EH systems in terms of RIS locations, namely RIS-EH and RIS-information processing (RIS-IP). In the RIS-EH, RIS increases the amount of harvested energy, while in the RIS-IP, RIS is utilized to improve the information processing link. Closed-formed expressions of throughput, outage probability, and average harvested power are derived and confirmed via simulation. The L-EH model overestimates system performance, while the NL-EH model provides a realistic interpretation of EH system design.