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Design of Reconfigurable Intelligent Surfaces for Wireless Communication: A Review

Authors :
Xiong, Rujing
Zhang, Jianan
Wang, Fuhai
Wang, Zhengyu
Ren, Xiang
Liu, Junshuo
Lu, Jialong
Wan, Kai
Mi, Tiebin
Qiu, Robert Caiming
Publication Year :
2023

Abstract

This paper addresses the hardware structure of Reconfigurable Intelligent Surfaces (RIS) and presents a comprehensive overview of RIS design, considering both unit design and prototype systems. It commences by tracing the evolutionary trajectory of RIS, originating from static cell-structured hypersurfaces. The article conducts a meticulous examination from the standpoint of adaptability, elucidating the diverse array of unit structures and design philosophies that underlie existing RIS frameworks. Following this, the study systematically categorizes and synthesizes channel modeling research for RIS-facilitated wireless communication, leveraging both physical insights and statistical data. Additionally, the article provides a detailed exposition of current RIS experimental setups and their corresponding empirical findings, delving into the attributes of prototype design and system functionalities. Moreover, this work introduces an in-house developed RIS prototype. The prototype undergoes rigorous empirical evaluation, encompassing multi-hop RIS signal amplification, image reconstruction, and real-world indoor signal coverage experiments. The empirical results robustly affirm the efficacy of RIS in effectively mitigating signal coverage blind spots and enabling radio wave imaging. With RIS-enhanced augmentation, the average indoor signal gain surpasses 8 dB.

Details

Database :
arXiv
Publication Type :
Report
Accession number :
edsarx.2304.14232
Document Type :
Working Paper