ARIS-Empowered Wireless Communications: Joint Beamforming Design and Deployment Optimization

  • Xiaohui Gu
  • , Guoan Zhang*
  • , Wei Duan*
  • , Miaowen Wen
  • , Jaeho Choi
  • , Pin Han Ho
  • *Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

Abstract

This letter studies an aerial reconfigurable intelligent surface (ARIS)-aided multiple-input multiple-output (MIMO) ground communication system, where downlink transmission from a multi-antenna base station (BS) to a set of terrestrial single-antenna users is investigated. We target at optimizing the sum-rate of all users by jointly considering the active beamforming at BS, the passive beamforming at ARIS, and the ARIS deployment. A three-stage alternative algorithm, called JAPBD, is proposed to effectively solve the formulated problem, where the active and passive beamforming are designed by means of the block coordinate descent (BCD) method, while the ARIS deployment is optimized through successive convex approximation (SCA). Numerical results demonstrate the rapid convergence and superiority of the proposed scheme compared with existing works.

Original languageEnglish
Pages (from-to)2003-2007
Number of pages5
JournalIEEE Wireless Communications Letters
Volume12
Issue number12
DOIs
StatePublished - 2023.12.1

Keywords

  • active and passive beamforming design
  • Aerial reconfigurable intelligent surface
  • deployment optimization
  • successive convex approximation

Quacquarelli Symonds(QS) Subject Topics

  • Computer Science & Information Systems
  • Engineering - Electrical & Electronic
  • Engineering - Petroleum

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