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Reconfigurable intelligent surface (RIS) is considered as a promising solution for next-generation wireless communication networks due to a variety of merits, e.g., customizing the communication environment. Therefore, deploying multiple…

信号处理 · 电气工程与系统科学 2023-02-09 Mengbing Liu , Chongwen Huang , Marco Di Renzo , Merouane Debbah , Chau Yuen

By reconfiguring the propagation environment of electromagnetic waves artificially, reconfigurable intelligent surfaces (RISs) have been regarded as a promising and revolutionary hardware technology to improve the energy and spectrum…

信号处理 · 电气工程与系统科学 2020-06-03 Huiyuan Yang , Xiaojun Yuan , Jun Fang , Ying-Chang Liang

Reconfigurable intelligent surfaces (RISs) enable reliable low-latency millimeter wave (mmWave) communication links in cases of a blocked line-of-sight (LoS) between the base station (BS) and the user equipment (UE), i.e. a RIS mounted on a…

系统与控制 · 电气工程与系统科学 2024-02-13 Hamed Radpour , Markus Hofer , David Loschenbrand , Lukas Walter Mayer , Andreas Hofmann , Martin Schiefer , Thomas Zemen

Reconfigurable intelligent surfaces (RISs) have been proposed as a key enabler to improve the coverage of the signals and mitigate the frequent blockages in millimeter wave (mmWave) multiple-input multiple-output (MIMO) communications.…

信号处理 · 电气工程与系统科学 2021-07-16 Rafaela Schroeder , Jiguang He , Glauber Brante , Markku Juntti

Reconfigurable intelligent surface (RIS) provides a promising way to build programmable wireless transmission environments. Owing to the massive number of controllable reflecting elements on the surface, RIS is capable of providing…

信息论 · 计算机科学 2022-10-03 Xiaoyan Ma , Yuguang Fang , Haixia Zhang , Shuaishuai Guo , Dongfeng Yuan

Optimizing a real-life RIS-parametrized wireless channel with a physics-consistent multiport-network model necessitates prior remote estimation of the mutual coupling (MC) between RIS elements. The number of MC parameters grows…

应用物理 · 物理学 2025-07-31 Philipp del Hougne

The performance of wireless communication systems is fundamentally constrained by random and uncontrollable wireless channels. Recently, reconfigurable intelligent surfaces (RIS) has emerged as a promising solution to enhance wireless…

信号处理 · 电气工程与系统科学 2023-12-29 Xiaohao Mo , Lin Gui , Kai Ying , Xichao Sang , Xiaqing Diao

With the capability to support gigabit data rates, millimetre-wave (mm-Wave) communication is unanimously considered a key technology of future cellular networks. However, the harsh propagation at such high frequencies makes these networks…

网络与互联网体系结构 · 计算机科学 2021-06-09 Eugenio Moro , Ilario Filippini , Antonio Capone , Danilo De Donno

Orthogonal multi-user multiple-input multiple-output (MU-MIMO) channels allow for optimum performance with simplified precoding/equalization, and they achieve maximum multiplexing gain which is shared fairly among users. Reconfigurable…

信息论 · 计算机科学 2023-05-01 Juan Vidal Alegria , Fredrik Rusek

Reconfigurable intelligent surfaces (RISs) are rapidly gaining prominence in the realm of fifth generation (5G)-Advanced, and predominantly, sixth generation (6G) mobile networks, offering a revolutionary approach to optimizing wireless…

Future wireless networks are envisioned to deliver not only gigabit communications but also ubiquitous sensing. Reconfigurable intelligent surfaces (RISs) have emerged to reshape radio propagation, recently showing considerable promise for…

信号处理 · 电气工程与系统科学 2025-09-22 Ziyuan Zheng , Qingqing Wu , Yanze Zhu , Wen Chen , Ying Gao , Honghao Wang

This work studies the net sum-rate performance of a distributed reconfigurable intelligent surfaces (RISs)-assisted multi-user multiple-input-single-output (MISO) downlink communication system under imperfect instantaneous-channel state…

信息论 · 计算机科学 2023-07-04 Bayan Al-Nahhas , Qurrat-Ul-Ain Nadeem , Anas Chaaban

In traditional Reconfigurable Intelligent Surfaces (RIS) systems, the RIS is mounted on stationary structures like buildings, walls, or posts. They have shown promising results in enhancing the performance of wireless systems like capacity…

信号处理 · 电气工程与系统科学 2024-12-24 I. Zakir Ahmed , Hamid Sadjadpour

Reconfigurable intelligent surface (RIS) technology has recently emerged as a spectral- and cost-efficient approach for wireless communications systems. However, existing hand-engineered schemes for passive beamforming design and…

信号处理 · 电气工程与系统科学 2021-05-04 Nhan Thanh Nguyen , Ly V. Nguyen , Thien Huynh-The , Duy H. N. Nguyen , A. Lee Swindlehurst , Markku Juntti

Reconfigurable intelligent surfaces (RISs) have attracted great attention as a potential beyond 5G technology. These surfaces consist of many passive elements of metamaterials whose impedance can be controllable to change the phase,…

信息论 · 计算机科学 2021-09-09 Özlem Tuğfe Demir , Emil Björnson

Reconfigurable intelligent surface (RIS) is a type of wireless communication technology that uses a reconfigurable surface, such as a wall or building that is able to adjust its properties by an integrated optimization algorithm in order to…

应用物理 · 物理学 2023-09-25 Emanuel Colella , Luca Bastianelli , Franco Moglie , Valter Mariani Primiani

Reconfigurable intelligent surfaces (RISs) enable programmable control of wireless propagation. Beyond environmental deployments, integrating metasurfaces at the antenna front end allows direct manipulation of the radiated electromagnetic…

信号处理 · 电气工程与系统科学 2026-03-09 Chandan Kumar Sheemar , Wali Ullah Khan , Sourabh Solanki , George C. Alexandropoulos , Symeon Chatzinotas

Intelligent surfaces comprising of cost effective, nearly passive, and reconfigurable unit elements are lately gaining increasing interest due to their potential in enabling fully programmable wireless environments. They are envisioned to…

信息论 · 计算机科学 2022-05-26 George C. Alexandropoulos , Evangelos Vlachos

Reconfigurable intelligent surface (RIS) has been anticipated to be a novel cost-effective technology to improve the performance of future wireless systems. In this paper, we investigate a practical RIS-aided multiple-input-multiple-output…

信息论 · 计算机科学 2023-03-23 Jintao Wang , Shiqi Gong , Qingqing Wu , Shaodan Ma

The envisioned sixth-generation (6G) of wireless networks will involve an intelligent integration of communications and computing, thereby meeting the urgent demands of diverse applications. To realize the concept of the smart radio…

信号处理 · 电气工程与系统科学 2022-10-04 Bo Yang , Xuelin Cao , Jindan Xu , Chongwen Huang , George C. Alexandropoulos , Linglong Dai , M'erouane Debbah , H. Vincent Poor , Chau Yuen