Reconfigurable intelligent surface empowered underlaying device-to-device communication

Gang Yang, Yating Liao, Ying Chang Liang, Olav Tirkkonen

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

5 Citations (Scopus)
119 Downloads (Pure)

Abstract

Reconfigurable intelligent surfaces (RIS) are a new and revolutionary technology to achieve spectrum-, energy- and cost-efficient wireless networks. This paper studies the resource allocation for RIS-empowered device-to-device (D2D) communication underlaying a cellular network, in which an RIS is employed to enhance desired signals and suppress interference between paired D2D and cellular links. We maximize the sum rate of D2D users and cellular users by jointly optimizing the resource reuse indicators, the transmit power and the RIS’s passive beamforming. To solve the formulated non-convex problem, we first propose an efficient user-pairing scheme based on relative channel strength to determine the resource reuse indicators. Then, the transmit power and the RIS’s passive beamforming are jointly optimized by an iterative algorithm, based on the techniques of alternating optimization, successive convex approximation, Lagrangian dual transform and quadratic transform. Numerical results show that the proposed design outperforms the traditional D2D network without RIS.

Original languageEnglish
Title of host publication2021 IEEE Wireless Communications and Networking Conference, WCNC 2021
PublisherIEEE
Number of pages6
ISBN (Electronic)978-1-7281-9505-6
DOIs
Publication statusPublished - 2021
MoE publication typeA4 Conference publication
EventIEEE Wireless Communications and Networking Conference - Nanjing, China
Duration: 29 Mar 20211 Apr 2021

Publication series

NameIEEE Wireless Communications and Networking Conference
ISSN (Print)1525-3511

Conference

ConferenceIEEE Wireless Communications and Networking Conference
Abbreviated titleWCNC
Country/TerritoryChina
CityNanjing
Period29/03/202101/04/2021

Keywords

  • Device-to-device communication
  • Iterative algorithm
  • Passive beamforming
  • Power allocation
  • Reconfigurable intelligent surfaces

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