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Title: Wireless communications through reconfigurable intelligent surfaces
Authors: Basar, E.
Di Renzo, M.
De Rosny, J.
Debbah, M.
Alouini, M.-S.
Zhang, R. 
Keywords: 6G
Large intelligent surfaces
Reconfigurable intelligent surfaces
Smart reflect-arrays
Software-defined surfaces
Wireless communications
Wireless networks
Issue Date: 2019
Publisher: Institute of Electrical and Electronics Engineers Inc.
Citation: Basar, E., Di Renzo, M., De Rosny, J., Debbah, M., Alouini, M.-S., Zhang, R. (2019). Wireless communications through reconfigurable intelligent surfaces. IEEE Access 7 : 116753-116773. ScholarBank@NUS Repository.
Rights: Attribution-NonCommercial-NoDerivatives 4.0 International
Abstract: The future of mobile communications looks exciting with the potential new use cases and challenging requirements of future 6th generation (6G) and beyond wireless networks. Since the beginning of the modern era of wireless communications, the propagation medium has been perceived as a randomly behaving entity between the transmitter and the receiver, which degrades the quality of the received signal due to the uncontrollable interactions of the transmitted radio waves with the surrounding objects. The recent advent of reconflgurable intelligent surfaces in wireless communications enables, on the other hand, network operators to control the scattering, reflection, and refraction characteristics of the radiowaves, by overcoming the negative effects of natural wireless propagation. Recent results have revealed that reconflgurable intelligent surfaces can effectively control the wavefront, e.g., the phase, amplitude, frequency, and even polarization, of the impinging signals without the need of complex decoding, encoding, and radio frequency processing operations. Motivated by the potential of this emerging technology, the present article is aimed to provide the readers with a detailed overview and historical perspective on state-of-the-art solutions, and to elaborate on the fundamental differences with other technologies, the most important open research issues to tackle, and the reasons why the use of reconflgurable intelligent surfaces necessitates to rethink the communication-theoretic models currently employed in wireless networks. This article also explores theoretical performance limits of reconflgurable intelligent surface-assisted communication systems using mathematical techniques and elaborates on the potential use cases of intelligent surfaces in 6G and beyond wireless networks. © 2019 Institute of Electrical and Electronics Engineers Inc.. All rights reserved.
Source Title: IEEE Access
ISSN: 2169-3536
DOI: 10.1109/ACCESS.2019.2935192
Rights: Attribution-NonCommercial-NoDerivatives 4.0 International
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