Energy-Efficient Coverage Enhancement of Indoor THz-MISO Systems: An FD-NOMA Approach

Omar Maraqa, Aditya S. Rajasekaran, Hamza U. Sokun, Saad Al-Ahmadi, Halim Yanikomeroglu, Sadiq M. Sait

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

6 Scopus citations

Abstract

Terahertz (THz) communication is gaining more interest as one of the envisioned enablers of high-data-rate short-distance indoor applications in beyond 5G networks. Moreover, non-orthogonal multiple-access (NOMA)-enabled schemes are promising schemes to realize the target spectral efficiency, low latency, and user fairness requirements in future networks. In this paper, an energy-efficient cooperative NOMA (CNOMA) scheme that guarantees the minimum required rate for the cell-edge users in an indoor THz-MISO communications network is proposed. The proposed cooperative scheme consists of three stages: (i) beamforming stage that allocates base-station (BS) beams to THz cooperating cell-center users using analog beamforming with the aid of the cosine similarity metric, (ii) user pairing stage that is tackled using the Hungarian algorithm, and (iii) power allocation stage for both the BS THz-NOMA transmit power and the cooperation power of the cooperating cell-center users, which are optimized sequentially. The obtained results quantify the energy efficiency (EE) of the proposed scheme and shed new light on the performance of multi-user THz-NOMA-enabled networks.

Original languageEnglish
Title of host publication2021 IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages483-489
Number of pages7
ISBN (Electronic)9781728175867
DOIs
StatePublished - 13 Sep 2021

Publication series

NameIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
Volume2021-September

Bibliographical note

Funding Information:
This work was supported in part by the King Fahd University of Petroleum and Minerals under Grant SB191038; in part by Ericsson Canada Inc.; and in part by the Discovery Grant of the Natural Sciences and Engineering Research Council of Canada.

Publisher Copyright:
© 2021 IEEE.

Keywords

  • Non-orthogonal multiple access (NOMA)
  • beamforming
  • energy efficiency (EE)
  • full-duplex (FD)
  • power allocation
  • terahertz (THz) communication
  • user cooperation
  • user pairing

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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