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On-line Access: 2024-08-27

Received: 2023-10-17

Revision Accepted: 2024-05-08

Crosschecked: 2024-01-26

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Frontiers of Information Technology & Electronic Engineering  2023 Vol.24 No.12 P.1665-1668

http://doi.org/10.1631/FITEE.2320000


Reconfigurable intelligent surfaces for wireless communications


Author(s):  Qiang CHENG, Shi JIN, Tie Jun CUI

Affiliation(s):  School of Information Science and Engineering, Southeast University, Nanjing 210096, China

Corresponding email(s):   qiangcheng@seu.edu.cn

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Abstract: 
Reconfigurable intelligent surface (RIS) is a two-dimensional artificial material with reconfigurable electromagnetic characteristics. Since the phase, amplitude, polarization, and frequency responses of electromagnetic waves at each element can be independently adjusted by changing the biasing signals of tunable devices embedded in the RIS elements, it is possible to reshape the wavefront of the spatial electromagnetic waves in a programmable way. Therefore, RIS provides powerful capability to control the wireless propagation environment and improve the performance of wireless communication networks, along with the advantages of low complexity, simple structure, and low cost, showing great potentials for many applications including wireless coverage extension, wireless coverage enhancement, and wireless system capacity improvement. There are several important technical points in the development of RIS-aided wireless communication technology.

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