CSI acquisition in RIS-assisted mobile communication systems

Yu Han, Wankai Tang, Xiao Li, Michalis Matthaiou, Shi Jin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)
25 Downloads (Pure)

Abstract

Reconfigurable intelligent surface (RIS)-assisted mobile communication is a promising technological paradigm thanks to the attractive advantages of low cost and flexible control of electromagnetic waves. However, the low-cost features of RISs entail some fundamental challenges to the acquisition of channel state information (CSI), which is essential for the optimal RIS design. To tackle this problem, there have been extensive studies on CSI acquisition in RIS-assisted mobile communication systems, from the perspective of architectural improvement as well as specific mathematical solutions. This article aims to overview the existing works on CSI acquisition in RIS-assisted mobile communication systems.

Original languageEnglish
Article numbernwad127
Number of pages16
JournalNational Science Review
Volume10
Issue number8
Early online date05 May 2023
DOIs
Publication statusPublished - 01 Aug 2023

Keywords

  • RIS
  • channel estimation
  • hybrid RIS
  • implicit CSI

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