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Given its ability to control and manipulate wireless environments, reconfigurable intelligent surface (RIS), also known as intelligent reflecting surface (IRS), has emerged as a key enabler technology for the six-generation (6G) cellular…

信号处理 · 电气工程与系统科学 2021-02-01 Ahmed Al-Hilo , Moataz Samir , Mohamed Elhattab , Chadi Assi , Sanaa Sharafeddine

Reconfigurable intelligent surface has attracted the attention of academia and industry as soon as it appears because it can flexibly manipulate the electromagnetic characteristics of wireless channel. Especially in the past one or two…

网络与互联网体系结构 · 计算机科学 2022-01-19 Yajun Zhao , Mengnan Jian

Reconfigurable Intelligent Surfaces (RISs) are programmable metasurfaces that can adaptively steer received electromagnetic energy in desired directions by employing controllable phase shifting cells. Among other uses, an RIS can modify the…

信号处理 · 电气工程与系统科学 2025-05-15 Ender Ayanoglu , Filippo Capolino , A. Lee Swindlehurst

A conceptual example is first analyzed to show that efficient wireless communications is possible, when user equipment (UE) receiver, BS transmitter or/and the scatter (reflector) in wireless channels employ the required channel state…

信号处理 · 电气工程与系统科学 2024-03-19 Lie-Liang Yang

Reconfigurable intelligent surface (RIS)-assisted communication appears as one of the potential enablers for sixth generation (6G) wireless networks by providing a new way to optimize the communication system performance. This paper aims to…

信号处理 · 电气工程与系统科学 2020-09-01 E. Basar , I. Yildirim

Reconfigurable intelligent surfaces (RISs) have promising coverage and data rate gains for wireless communication systems in 5G and beyond. Prior work has mainly focused on analyzing the performance of these surfaces using computer…

In the recent years, the proliferation of wireless data traffic has led the scientific community to explore the use of higher unallocated frequency bands, such as the millimeter wave and terahertz (0.1-10 THz) bands. However, they are prone…

信号处理 · 电气工程与系统科学 2020-08-17 Evangelos N. Papasotiriou , Alexandros-Apostolos A. Boulogeorgos , Antigone Stratakou , Angeliki Alexiou

5G radio at millimeter wave (mmWave) and beyond 5G concepts at 0.1-1 THz can exploit angle and delay measurements for localization, by the virtue of increased bandwidth and large antenna arrays but are limited in terms of blockage caused by…

信号处理 · 电气工程与系统科学 2020-06-12 Henk Wymeersch , Jiguang He , Benoît Denis , Antonio Clemente , Markku Juntti

Reconfigurable intelligent surface (RIS) is a new paradigm that has great potential to achieve cost-effective, energy-efficient information modulation for wireless transmission, by the ability to change the reflection coefficients of the…

信号处理 · 电气工程与系统科学 2020-07-07 Wankai Tang , Jun Yan Dai , Ming Zheng Chen , Kai-Kit Wong , Xiao Li , Xinsheng Zhao , Shi Jin , Qiang Cheng , Tie Jun Cui

Millimeter-wave (mmWave) positioning has emerged as a promising technology for next-generation intelligent systems. The advent of reconfigurable intelligent surfaces (RISs) has revolutionized high-precision mmWave localization by enabling…

信号处理 · 电气工程与系统科学 2026-04-23 Xin Cheng , Yuqing Yang , Guangjie Han , Menglu Li , Ruoguang Li , Feng Shu

While the researchers have set their sights on future wireless networks of 2030, communications through reconfigurable intelligent surfaces (RISs) appears as one of the potential enabling technologies for 6G wireless networking. This…

信息论 · 计算机科学 2021-03-05 E. Basar , I. Yildirim

Reconfigurable intelligent surface~(RIS) has drawn a great attention worldwide as it can create favorable propagation conditions by controlling the phase shifts of the reflected signals at the surface to enhance the communication quality.…

信息论 · 计算机科学 2020-01-24 Hongliang Zhang , Boya Di , Lingyang Song , Zhu Han

Continuous efforts have been devoted to integrate millimeter wave (mmWave) and terahertz (THz) bands into future communication standards in order to overcome the bandwidth shortage problem and achieve high data rates, primarily through…

信号处理 · 电气工程与系统科学 2026-03-05 Sung Hyuck Hong , Junil Choi

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

Reconfigurable intelligent surface (RIS) can improve the communications between a source and a destination. Recently, continuous aperture RIS is proved to have better communication performance than discrete aperture RIS and has received…

信号处理 · 电气工程与系统科学 2022-10-04 Yuhua Jiang , Feifei Gao , Mengnan Jian , Shun Zhang , Wei Zhang

The reconfigurable intelligent surface (RIS) technology for metasurfaces is ushering in a new paradigm for wireless communication systems. It provides an accessible way for controlling the interaction between electromagnetic waves with the…

信号处理 · 电气工程与系统科学 2026-01-21 P. H. C. de Souza , M. Khazaee , L. L. Mendes

Antenna array technology enables directional transmission and reception of wireless signals, for communications, localization, and sensing purposes. The signal processing algorithms that underpin this technology began to be developed…

信号处理 · 电气工程与系统科学 2022-03-09 Emil Björnson , Henk Wymeersch , Bho Matthiesen , Petar Popovski , Luca Sanguinetti , Elisabeth de Carvalho

Reconfigurable intelligent surface (RIS) has recently emerged as a promising paradigm for future cellular networks. Specifically, due to its capability in reshaping the propagation environment, RIS was introduced to address the blockage…

信号处理 · 电气工程与系统科学 2022-03-28 Peilan Wang , Jun Fang , Weizheng Zhang , Zhi Chen , Hongbin Li , Wei Zhang

In the context of the joint radar and communications (JRC) framework, reconfigurable intelligent surfaces (RISs) emerged as a promising technology for their ability to shape the propagation environment by adjusting their phase-shift…

信号处理 · 电气工程与系统科学 2025-04-15 Steven Rivetti , Ozlem Tugfe Demir , Emil Bjornson , Mikael Skoglund

Millimeter wave (mmWave) band, or high frequencies such as THz, has large undeveloped band of spectrum. However, wireless channels over the mmWave band usually have one or two paths only due to the severe attenuation. The channel property…

信息论 · 计算机科学 2020-04-14 Xi Yang , Chao-Kai Wen , Shi Jin