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Reconfigurable intelligent surfaces (RISs) have emerged as a candidate technology for future 6G networks. However, due to the "multiplicative fading" effect, the existing passive RISs only achieve a negligible capacity gain in environments…

信息论 · 计算机科学 2023-01-20 Zijian Zhang , Linglong Dai , Xibi Chen , Changhao Liu , Fan Yang , Robert Schober , H. Vincent Poor

Reconfigurable intelligent surfaces (RISs) represent a promising candidate for sixth-generation (6G) wireless networks, as the RIS technology provides a new solution to control the propagation channel in order to improve the efficiency of a…

信息论 · 计算机科学 2022-08-15 Mohamad H. Dinan , Nemanja Stefan Perovic , Mark F. Flanagan

Reconfigurable intelligent surface (RIS) has emerged as a cost-effective and energy-efficient technique for 6G. By adjusting the phase shifts of passive reflecting elements, RIS is capable of suppressing the interference and combining the…

信息论 · 计算机科学 2023-04-26 Jinglian He , Yijie Mao , Yong Zhou , Ting Wang , Yuanming Shi

Active reconfigurable intelligent surface (RIS) emerges as an effective technique to resist the double-fading attenuation of passive RIS. By embedding with power harvesting function, it further evolves to zero-power active RIS, which can…

信息论 · 计算机科学 2025-10-17 Xiao Zheng , Wenchi Cheng , Jingqing Wang , Zhuohui Yao , Jiangzhou Wang

This paper presents a multi-bit reconfigurable intelligent surface (RIS) with a high phase resolution, capable of beam-steering in the azimuthal plane at sub-6 Gigahertz (GHz). Field trials in realistic indoor deployments have been carried…

信号处理 · 电气工程与系统科学 2022-10-21 James Rains , Jalil ur Rehman Kazim , Anvar Tukmanov , Tie Jun Cui , Lei Zhang , Qammer H. Abbasi , Muhammad Ali Imran

This paper presents a sophisticated reconfigurable metasurface architecture that introduces an advanced concept of flexible full-array space-time wavefront manipulation with enhanced dynamic capabilities. The practical 2-bit phase-shifting…

信号处理 · 电气工程与系统科学 2024-07-30 Yufei Zhao , Yuan Feng , Afkar Mohamed Ismail , Ziyue Wang , Yong Liang Guan , Yongxin Guo , Chau Yuen

Reconfigurable intelligent surface (RIS)-assisted communication is a key enabling technology for next-generation wireless communication networks, allowing for the reshaping of wireless channels without requiring traditional radio frequency…

信号处理 · 电气工程与系统科学 2025-11-18 Recep Vural , Aymen Khaleel , Ertugrul Basar

Positioning is expected to be a core function in intelligent transportation systems (ITSs) to support communication and location-based services, such as autonomous driving, traffic control, etc. With the advent of low-cost reflective…

信号处理 · 电气工程与系统科学 2023-11-15 Hui Chen , Pinjun Zheng , Musa Furkan Keskin , Tareq Al-Naffouri , Henk Wymeersch

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 surface (RIS) has been regarded as a revolutionary and promising technology owing to its powerful feature of adaptively shaping wireless propagation environment. However, as a frequency-selective device, the RIS…

信号处理 · 电气工程与系统科学 2021-06-29 Sifan Liu , Pengfei Ni , Rang Liu , Yang Liu , Ming Li , Qian Liu

Among various promising candidate technologies for the sixth-generation (6G) wireless communications, recent advances in microwave metasurfaces have sparked a new research area of reconfigurable intelligent surfaces (RISs). By controllably…

信号处理 · 电气工程与系统科学 2024-03-26 Jieao Zhu , Ze Gu , Qian Ma , Linglong Dai , Tie Jun Cui

Recent advances in the fabrication and experimentation of Reconfigurable Intelligent Surfaces (RISs) have motivated the concept of the smart radio environment, according to which the propagation of information-bearing waveforms in the…

信息论 · 计算机科学 2021-07-27 George C. Alexandropoulos , Nir Shlezinger , Philipp del Hougne

Reconfigurable intelligent surfaces (RISs), also known as intelligent reflecting surfaces (IRSs), or large intelligent surfaces (LISs), have received significant attention for their potential to enhance the capacity and coverage of wireless…

信号处理 · 电气工程与系统科学 2021-05-05 Yuanwei Liu , Xiao Liu , Xidong Mu , Tianwei Hou , Jiaqi Xu , Marco Di Renzo , Naofal Al-Dhahir

Programmable metasurfaces have garnered significant attention due to their exceptional ability to manipulate electromagnetic (EM) waves in real time, leading to the emergence of a prominent area in wireless communication, namely…

The integration of Smart Surfaces in 6G communication networks, also dubbed as Reconfigurable Intelligent Surfaces (RISs), is a promising paradigm change gaining significant attention given its disruptive features. RISs are a key enabler in…

网络与互联网体系结构 · 计算机科学 2025-03-31 Guillermo Encinas-Lago , Francesco Devoti , Marco Rossanese , Vincenzo Sciancalepore , Marco Di Renzo , Xavier Costa-Pérez

In next-generation wireless networks, reconfigurable intelligent surface (RIS)-assisted multiple-input multiple-output (MIMO) systems are foreseeable to support a large number of antennas at the transceiver as well as a large number of…

信息论 · 计算机科学 2023-01-24 Chang Cai , Xiaojun Yuan , Ying-Jun Angela Zhang

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

The march towards 6G is accelerating and future wireless network architectures require enhanced performance along with significant coverage especially, to combat impairments on account of the wireless channel. Reconfigurable intelligent…

信号处理 · 电气工程与系统科学 2023-08-16 Emre Arslan , Fatih Kilinc , Ertugrul Basar , Huseyin Arslan

Reconfigurable intelligent surface (RIS) is considered as an extraordinarily promising technology to solve the blockage problem of millimeter wave (mmWave) communications owing to its capable of establishing a reconfigurable wireless…

信息论 · 计算机科学 2022-02-22 Yuqian Zhu , Ming Li , Yang Liu , Qian Liu , Zheng Chang , Yulin Hu

The concept of fluid reconfigurable intelligent surface (FRIS) upgrades the conventional reconfigurable intelligent surface (RIS) paradigm by empowering its reflecting elements with positioning reconfigurability. This letter aims to…

信息论 · 计算机科学 2025-11-21 Xusheng Zhu , Kai-Kit Wong , Boyi Tang , Wen Chen , Chan-Byoung Chae