Smart Radio Environments Empowered by Reconfigurable Intelligent Surfaces: How It Works, State of Research, and The Road Ahead
@article{Renzo2020SmartRE,
title={Smart Radio Environments Empowered by Reconfigurable Intelligent Surfaces: How It Works, State of Research, and The Road Ahead},
author={Marco di Renzo and Alessio Zappone and M{\'e}rouane Debbah and Mohamed-Slim Alouini and Chau Yuen and Julien de Rosny and Sergei A. Tretyakov},
journal={IEEE Journal on Selected Areas in Communications},
year={2020},
volume={38},
pages={2450-2525}
}Reconfigurable intelligent surfaces (RISs) are an emerging transmission technology for application to wireless communications. RISs can be realized in different ways, which include (i) large arrays of inexpensive antennas that are usually spaced half of the wavelength apart; and (ii) metamaterial-based planar or conformal large surfaces whose scattering elements have sizes and inter-distances much smaller than the wavelength. Compared with other transmission technologies, e.g., phased arrays…
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439 Citations
Reconfigurable intelligent surfaces for smart wireless environments: channel estimation, system design and applications in 6G networks
- Computer ScienceSci. China Inf. Sci.
- 2021
An overview of the RIS-aided wireless systems, including the reflection principle, channel estimation, and system design is provided, and two types of emerging RIS systems are considered: RIS- aided wireless communications (RAWC and RIS-based information transmission (RBIT), where the RIS plays the role of the reflector and the transmitter, respectively.
On communication-theoretic models for programmable wireless environments enabled by reconfigurable intelligent surfaces
- Computer Science
- 2021
Reconfigurable intelligent surfaces (RISs) have emerged as a promising technology for their capability of customizing the wireless propagation environment through nearly passive signal transformations to fulfill the stringent requirements of 6G networks.
Reconfigurable Intelligent Surfaces vs. Relaying: Differences, Similarities, and Performance Comparison
- BusinessIEEE Open Journal of the Communications Society
- 2020
The present paper elaborates on the key differences and similarities between RISs that are configured to operate as anomalous reflectors and relays and illustrates numerical results that highlight the spectral efficiency gains of RISs when their size is sufficiently large as compared with the wavelength of the radio waves.
Optimization of Reconfigurable Intelligent Surfaces Through Trace Maximization
- Computer Science2021 IEEE International Conference on Communications Workshops (ICC Workshops)
- 2021
This paper investigates optimized (amplitude and phase) RIS design in a point-to-point multipath MIMO link and studies the impact on link capacity under the assumption of perfect channel state information at the transmitter, receiver and RIS.
Reconfigurable Intelligent Surfaces in Challenging Environments
- Computer ScienceArXiv
- 2020
The benefits of RIS for wireless networking in underwater and underground medium as well as in industrial and disaster environments have not been addressed yet and a motivation for the application of RISs in CEs is provided.
A Path to Smart Radio Environments: An Industrial Viewpoint on Reconfigurable Intelligent Surfaces
- Computer ScienceIEEE Wireless Communications
- 2022
This article intends to shed some light on RISs from an industrial view-point and to provide a roadmap in order to make RISs feasible in industry.
Design and Evaluation of Reconfigurable Intelligent Surfaces in Real-World Environment
- Computer ScienceIEEE Open Journal of the Communications Society
- 2022
This paper develops an RIS proof-of-concept prototype and extensively evaluates its potential gains in the field under realistic wireless communication settings, drawing useful insights into the design and performance of RIS systems and providing an important proof for their potential gain in real-world far-field wireless communication environments.
Communication Models for Reconfigurable Intelligent Surfaces: From Surface Electromagnetics to Wireless Networks Optimization
- Computer ScienceArXiv
- 2021
This tutorial paper focuses on communication models for RISs that are based on inhomogeneous sheets of surface impedance, and offers a step-by-step tutorial on formulating electromagnetically-consistent analytical models for optimizing the surface impedance.
Wireless Environment as a Service Enabled by Reconfigurable Intelligent Surfaces: The RISE-6G Perspective
- Computer Science2021 Joint European Conference on Networks and Communications & 6G Summit (EuCNC/6G Summit)
- 2021
The RISE-6G project aims at investigating innovative solutions that capitalize on the latest advances in the emerging technology of Reconfigurable Intelligent Surfaces (RISs), which offers dynamic and goal-oriented radio wave propagation control, enabling the concept of the wireless environment as a service.
System Performance Insights into Design of RIS-assisted Smart Radio Environments for 6G
- Business2021 IEEE Wireless Communications and Networking Conference (WCNC)
- 2021
Performance insights for design of RIS-assisted smart radio environments are provided by extending a recent system-level simulator and through extensive simulations, which investigates the impact of positioning/placement of RISs, the number of reflecting elements and the tilt/rotation of riss in both single and multi-RIS environments.
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Reconfigurable Intelligent Surfaces vs. Relaying: Differences, Similarities, and Performance Comparison
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The present paper elaborates on the key differences and similarities between RISs that are configured to operate as anomalous reflectors and relays and illustrates numerical results that highlight the spectral efficiency gains of RISs when their size is sufficiently large as compared with the wavelength of the radio waves.
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