Rate-Splitting Multiple Access Networks Assisted by Aerial Intelligent Reflecting Surfaces

Brena Kelly S. Lima, Rui Dinis, Daniel Benevides da Costa, Marko Beko, Rodolfo Oliveira, Rui Vigelis, Merouane Debbah

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

Abstract

This paper investigates rate-splitting multiple access (RSMA) networks assisted by aerial intelligent reflecting surfaces (AIRS) and assuming a downlink multiple-input single-output (MISO) scenario (AIRS-RSMA) with imperfect successive interference cancelation (SIC). An optimization problem is formulated in order to maximize the total achievable rate by optimizing the transmit beamforming and common achievable rate of the users. By using approximation and transformation techniques, we convert the optimization problem into a semi-definite program (SDP) problem. To solve this problem, an algorithm based on alternating optimization (AO) is proposed to iteratively solve the transmit beamforming problem. Simulation results are provided to demonstrate the efficiency of the proposed method, in which it is revealed that the performance gains in terms of sum-rate of AIRS-RSMA networks with robust beamforming are significantly greater than the non-optimized AIRS-RSMA and conventional non-orthogonal multiple access (NOMA) schemes.

Original languageEnglish
Title of host publication2022 IEEE Latin-American Conference on Communications, LATINCOM 2022
EditorsIgor M. Moraes, Miguel Elias M. Campista, Yacine Ghamri-Doudane, Costa Luis Henrique M. K. Costa, Marcelo G. Rubinstein
Place of PublicationNew Jersey
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages6
ISBN (Electronic)978-1-6654-8225-7
ISBN (Print)978-1-6654-8226-4
DOIs
Publication statusPublished - 2022
Event14th IEEE Latin-American Conference on Communications, LATINCOM 2022 - Rio de Janeiro, Brazil
Duration: 30 Nov 20222 Dec 2022

Publication series

NameIEEE Latin American Conference on Communications
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISSN (Print)2330-989X

Conference

Conference14th IEEE Latin-American Conference on Communications, LATINCOM 2022
Country/TerritoryBrazil
CityRio de Janeiro
Period30/11/222/12/22

Keywords

  • Intelligent reflecting surface (IRS)
  • rate-splitting multiple access (RSMA)
  • transmit beamfoming design
  • unmanned aerial vehicle (UAV)

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