CSI acquisition in RIS-assisted mobile communication systems

Yu Han; Wankai Tang; Xiao Li; Michalis Matthaiou; Shi Jin

doi:10.1093/nsr/nwad127

CSI acquisition in RIS-assisted mobile communication systems

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

^*Corresponding author for this work

School of Electronics, Electrical Engineering and Computer Science

Research output: Contribution to journal › Article › peer-review

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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 language	English
Article number	nwad127
Number of pages	16
Journal	National Science Review
Volume	10
Issue number	8
Early online date	05 May 2023
DOIs	https://doi.org/10.1093/nsr/nwad127
Publication status	Published - 01 Aug 2023

Keywords

RIS
channel estimation
hybrid RIS
implicit CSI

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10.1093/nsr/nwad127Licence: CC BY

CSI acquisition in RIS-assisted mobile communication systems
Copyright 2023 The Authors. This is an open access article published under a Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
Final published version, 579 KBLicence: CC BY

Cite this

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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.",

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AU - Matthaiou, Michalis

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AB - 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.

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KW - implicit CSI

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CSI acquisition in RIS-assisted mobile communication systems

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Keywords

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