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The next generation of wireless systems will take the concept of communications and networking to another level through the seamless integration of terrestrial, aerial, satellite, maritime and underwater communication systems.…

Networking and Internet Architecture · Computer Science 2022-08-02 Parisa Ramezani , Bin Lyu , Abbas Jamalipour

Reconfigurable intelligent surface (RIS) is a promising solution to boost coverage sustainably by reflecting waves from a transmitter to a receiver and acting as a low-power and passive relay. In this paper, for the first time, we…

Information Theory · Computer Science 2023-07-14 Philippe Ratajczak , Eric Séguenot , Dinh-Thuy Phan-Huy

Reconfigurable intelligent surfaces (RISs), an emerging technology proposed for inclusion in next generation wireless communication systems, are programmable surfaces that can adaptively reflect incident electromagnetic radiation in…

Signal Processing · Electrical Eng. & Systems 2025-12-30 Miguel Saavedra-Melo , Benjamin Bradshaw , Vanessa Yao , Ender Ayanoglu , Lee Swindlehurst , Filippo Capolino

The requirement of wireless data demands is increasingly high as the sixth-generation (6G) technology evolves. Reconfigurable intelligent surface (RIS) is promisingly deemed to be one of 6G techniques for extending service coverage,…

Signal Processing · Electrical Eng. & Systems 2023-11-09 Li-Hsiang Shen , Kai-Ten Feng , Ta-Sung Lee , Yuan-Chun Lin , Shih-Cheng Lin , Chia-Chan Chang , Sheng-Fuh Chang

Reconfigurable intelligent surface (RIS) is an emerging technology for application to wireless communications. In this paper, we consider the problem of anomalous reflection and model the RIS as a periodic surface impedance boundary. We…

Optimization and Control · Mathematics 2026-02-09 Ahmed Najjar , Hajar El Hassani , Marco Di Renzo , Kezhi Wang , Merouane Debbah

Reconfigurable Intelligent Surfaces (RIS) are currently considered for adoption in future 6G stantards. ETSI and 3GPP have started feasibility and performance investigations of such a technology. This work proposes an analytical model to…

Networking and Internet Architecture · Computer Science 2024-08-06 Hamza Adrat , Laurent Decreusefond , Philippe Martins

Intelligent reflecting surface (IRS), which consists of a large number of tunable reflective elements, is capable of enhancing the wireless propagation environment in a cellular network by intelligently reflecting the electromagnetic waves…

Signal Processing · Electrical Eng. & Systems 2021-06-10 Tao Jiang , Hei Victor Cheng , Wei Yu

Conventional Reconfigurable intelligent surfaces (RIS) for wireless communications have a local position-dependent (phase-gradient) scattering response on the surface. We consider more general RIS structures, called nonlocal (or…

Information Theory · Computer Science 2024-04-04 Amine Mezghani , Faouzi Bellili , Ekram Hossain

The integration of Reconfigurable Intelligent Surfaces (RISs) into wireless environments endows channels with programmability, and is expected to play a key role in future communication standards. To date, most RIS-related efforts focus on…

Information Theory · Computer Science 2022-02-17 Kyriakos Stylianopoulos , Nir Shlezinger , Philipp del Hougne , George C. Alexandropoulos

Reconfigurable Intelligent Surfaces (RISs) have risen to the forefront of wireless communications research due to their proactive ability to alter the wireless environment intelligently, promising improved wireless network capacity and…

Signal Processing · Electrical Eng. & Systems 2024-02-19 Gurjot Singh Bhatia , Yoann Corre , Thierry Tenoux , M. Di Renzo

Reconfigurable intelligent surface (RIS) is a promising candidate technology for the upcoming Sixth Generation (6G) communication system for its ability to manipulate the wireless communication environment by controlling the coefficients of…

Information Theory · Computer Science 2023-09-29 Haochen Li , Zhiwen Pan , Bin Wang , Nan Liu , Xiaohu You

Reconfigurable Intelligent Surfaces (RISs) have emerged as a promising technology to enhance wireless communication systems by enabling dynamic control over the propagation environment. However, practical experiments are crucial towards the…

Information Theory · Computer Science 2025-02-18 Dimitris Vordonis , Dimitris Kompostiotis , Vassilis Paliouras , George C. Alexandropoulos , Florin Grec

Reconfigurable Intelligent Surfaces (RISs) constitute a promising emerging technology that enables wireless systems to control the propagation environment to enhance diverse communication objectives. To mitigate double-fading attenuation in…

Signal Processing · Electrical Eng. & Systems 2025-04-01 Panagiotis Gavriilidis , Deepak Mishra , Besma Smida , Ertugrul Basar , Chau Yuen , George C. Alexandropoulos

Recently, the reconfigurable intelligent surface (RIS) technology has ushered in the prospect of control over the wireless propagation environment. By establishing alternative propagation paths for the transmitted signals, and by reflecting…

Signal Processing · Electrical Eng. & Systems 2025-11-18 Pedro H. C. de Souza , Luciano Mendes

The technology of reconfigurable intelligent surfaces (RIS) has been showing promising potential in a variety of applications relying on Beyond-5G networks. Reconfigurable intelligent surface (RIS) can indeed provide fine channel…

Signal Processing · Electrical Eng. & Systems 2023-03-28 Moustafa Rahal , Benoit Denis , Kamran Keykhosravi , Musa Furkan Keskin , Bernard Uguen , George C. Alexandropoulos , Henk Wymeersch

The concept of smart wireless environments envisions dynamic programmable propagation of information-bearing signals through the deployment of Reconfigurable Intelligent Surfaces (RISs). Typical RIS implementations include metasurfaces with…

Signal Processing · Electrical Eng. & Systems 2025-07-23 George C. Alexandropoulos , Nir Shlezinger , Ioannis Gavras , Haiyang Zhang

In the sixth-generation (6G) era, emerging large-scale computing based applications (for example processing enormous amounts of images in real-time in autonomous driving) tend to lead to excessive energy consumption for the end users, whose…

Signal Processing · Electrical Eng. & Systems 2021-09-06 Bo Yang , Xuelin Cao , Chongwen Huang , Yong Liang Guan , Chau Yuen , Marco Di Renzo , Dusit Niyato , Merouane Debbah , Lajos Hanzo

The demand for unprecedented performance in the upcoming 6G wireless networks is fomenting the research on THz communications empowered by Reconfigurable Inteligent Surfaces (RISs). A wide range of use cases have been proposed, most of…

Reconfigurable intelligent surfaces (RISs) have the potential of realizing the emerging concept of smart radio environments by leveraging the unique properties of meta-surfaces. In this article, we discuss the potential applications of RISs…

Signal Processing · Electrical Eng. & Systems 2020-02-24 M. Di Renzo , K. Ntontin , J. Song , F. H. Danufane , X. Qian , F. Lazarakis , J. de Rosny , D. -T. Phan-Huy , O. Simeone , R. Zhang , M. Debbah , G. Lerosey , M. Fink , S. Tretyakov , S. Shamai

A reconfigurable intelligent surface (RIS) can shape the wireless propagation channel by inducing controlled phase shift variations to the impinging signals. Multiple works have considered the use of RIS by time-varying configurations of…

Information Theory · Computer Science 2025-10-07 João Henrique Inacio de Souza , Victor Croisfelt , Fabio Saggese , Taufik Abrão , Petar Popovski
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