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Reconfigurable Intelligent Surfaces (RISs) are envisioned to play a key role in future wireless communications, enabling programmable radio propagation environments. They are usually considered as nearly passive planar structures that…

信号处理 · 电气工程与系统科学 2022-02-14 Haiyang Zhang , Nir Shlezinger , Idban Alamzadeh , George C. Alexandropoulos , Mohammadreza F. Imani , Yonina C. Eldar

A Reconfigurable Intelligent Surface (RIS) can significantly enhance network positioning and mapping, acting as an additional anchor point in the reference system and improving signal strength and measurement diversity through the…

In this paper, we survey state-of-the-art research outcomes in the burgeoning field of reconfigurable intelligent surface (RIS) in view of its potential for significant performance enhancement for next generation wireless communication…

信号处理 · 电气工程与系统科学 2020-10-16 Miguel Dajer , Zhengxiang Ma , Leonard Piazzi , Narayan Prasad , Xiao-Feng Qi , Baoling Sheen , Jin Yang , Guosen Yue

The reconfigurable intelligent surface (RIS) with low hardware cost and energy consumption has been recognized as a potential technique for future 6G communications to enhance coverage and capacity. To achieve this goal, accurate channel…

信息论 · 计算机科学 2021-01-26 Xiuhong Wei , Decai Shen , Linglong Dai

Reconfigurable intelligent surface (RIS) can effectively control the wavefront of the impinging signals and has emerged as a cost-effective promising solution to improve the spectrum and energy efficiency of wireless systems. Most existing…

信息论 · 计算机科学 2022-06-07 Yiming Liu , Erwu Liu , Rui Wang , Binyu Lu , Zhu Han

One of the key enablers of future wireless communications is constituted by massive multiple-input multiple-output (MIMO) systems, which can improve the spectral efficiency by orders of magnitude. However, in existing massive MIMO systems,…

Reconfigurable Intelligent Surfaces (RISs) have attracted major attention in the last few years, thanks to their useful characteristics. An RIS is a nearly passive thin surface that can dynamically change the reradiated field, and can…

信号处理 · 电气工程与系统科学 2022-02-24 V. Degli-Esposti , E. M. Vitucci , M. Di Renzo , S. Tretyakov

The advantages of millimeter-wave and large antenna arrays technologies for accurate wireless localization received extensive attentions recently. However, how to further improve the accuracy of wireless localization, even in the case of…

信息论 · 计算机科学 2020-09-17 Yiming Liu , Erwu Liu , Rui Wang

With the development of the next generation of mobile networks, new research challenges have emerged, and new technologies have been proposed to face them. On the one hand, the reconfigurable intelligent surface (RIS) technology is being…

信号处理 · 电气工程与系统科学 2021-05-26 Romain Fara , Philippe Ratajczak , Dinh-Thuy Phan Huy , Abdelwaheb Ourir , Marco Di Renzo , Julien De Rosny

The reconfigurable intelligent surface (RIS) is an emerging technology that changes how wireless networks are perceived, therefore its potential benefits and applications are currently under intense research and investigation. In this…

信息论 · 计算机科学 2023-05-18 Placido Mursia , Sendy Phang , Vincenzo Sciancalepore , Gabriele Gradoni , Marco Di Renzo

Reconfigurable Intelligent Surfaces (RISs) are announced as a truly transformative technology, capable of smartly shaping wireless environments to optimize next-generation communication networks. Among their numerous foreseen applications,…

信号处理 · 电气工程与系统科学 2023-06-21 Moustafa Rahal , Benoit Denis , Taghrid Mazloum , Frederic Munoz , Raffaele D Errico

Reconfigurable intelligent surface (RIS) is a promising technology that has the potential to change the way we interact with the wireless propagating environment. In this paper, we design and fabricate an RIS system that can be used in the…

信号处理 · 电气工程与系统科学 2023-08-08 Xilong Pei , Haifan Yin , Li Tan , Lin Cao , Taorui Yang

Reconfigurable intelligent surface (RIS) is an emerging technique employing metasurface to reflect the signal from the source node to the destination node. By smartly reconfiguring the electromagnetic (EM) properties of the metasurface and…

信息论 · 计算机科学 2022-06-30 Qi Gu , Dan Wu , Xin Su , Hanning Wang , Jingyuan Cui , Yifei Yuan

The integration of Reconfigurable Intelligent Surfaces (RIS) holds substantial promise for revolutionizing 6G wireless networks, offering unprecedented capabilities for real-time control over communication environments. However, determining…

网络与互联网体系结构 · 计算机科学 2024-02-02 Kevin Weinberger , Simon Tewes , Aydin Sezgin

Reconfigurable intelligent surface (RIS), a recently introduced technology for future wireless com-munication systems, enhances the spectral and energy efficiency by intelligently adjusting the propaga-tion conditions between a base station…

信号处理 · 电气工程与系统科学 2022-03-08 Huimei Han , Jun Zhao , Zehui Xiong , Dusit Niyato , Wenchao Zhai , Marco Di Renzo , Quoc-Viet Pham , Weidang Lu

Intelligent surfaces that reshape electromagnetic waves are regarded as disruptive technologies for wireless networks. However, existing designs sit at two costly extremes: dynamic reconfigurable intelligent surfaces (RISs) offer fine beam…

信号处理 · 电气工程与系统科学 2025-11-24 Ziyuan Zheng , Qingqing Wu , Wen Chen , Weiren Zhu , Ying Gao

The future 6G of wireless communication networks will have to meet multiple requirements in increasingly demanding levels, either individually or in combinations in small groups. This trend has spurred recent research activities on…

信号处理 · 电气工程与系统科学 2020-06-22 George C. Alexandropoulos , Geoffroy Lerosey , Merouane Debbah , Mathias Fink

Current scene depth estimation approaches mainly rely on optical sensing, which carries privacy concerns and suffers from estimation ambiguity for distant, shiny, and transparent surfaces/objects. Reconfigurable intelligent surfaces (RISs)…

信号处理 · 电气工程与系统科学 2022-11-16 Abdelrahman Taha , Hao Luo , Ahmed Alkhateeb

As the wireless research community moves toward shaping the vision of sixth-generation (6G) networks, reconfigurable intelligent surfaces (RIS) have emerged as a promising technology for controlling the propagation environment. Although RIS…

信号处理 · 电气工程与系统科学 2025-06-25 Prasetyo Putranto , Anis Amazigh Hamza , Sameh Mabrouki , Nasrullah Armi , Iyad Dayoub

Reconfigurable Intelligent Surfaces (RISs), comprising large numbers of low-cost and almost passive metamaterials with tunable reflection properties, have been recently proposed as an enabling technology for programmable wireless…

信息论 · 计算机科学 2022-08-23 Aris L. Moustakas , George C. Alexandropoulos , Mérouane Debbah