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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

Reconfigurable intelligent surface (RIS) enhances signal quality by adjusting the phase of electromagnetic waves in wireless communication. Spatial modulation (SM), a prominent index modulation (IM) technique, provides high spectral…

信号处理 · 电气工程与系统科学 2023-11-23 Burak Ahmet Ozden , Erdogan Aydin

Reconfigurable intelligent surface (RIS)-assisted communications is one of the promising candidates for next generation wireless networks by controlling the propagation environment dynamically. In this study, a channel modeling strategy for…

信息论 · 计算机科学 2021-11-03 Fatih Kilinc , Ibrahim Yildirim , Ertugrul Basar

Cooperative rate splitting (CRS), built upon rate splitting multiple access (RSMA) and opportunistic user relaying, has been recognized as a promising transmission strategy to enhance the user fairness and spectral efficiency in…

信息论 · 计算机科学 2022-08-09 Kangchun Zhao , Yijie Mao , Zhaohui Yang , Lixiang Lian , Bruno Clerckx

In this paper, we use a reconfigurable intelligent surface (RIS) to enhance the radar sensing and communication capabilities of a mmWave dual function radar communication system. To simultaneously localize the target and to serve the user,…

信号处理 · 电气工程与系统科学 2021-05-06 R. S. Prasobh Sankar , Battu Deepak , Sundeep Prabhakar Chepuri

As a novel approach to flexibly adjust the wireless environment, reconfigurable intelligent surfaces (RIS) have shown significant application potential across various domains, including wireless communication, radar detection, and the…

应用物理 · 物理学 2025-02-26 Zhen Zhang , Qiang Chen

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

Future wireless networks require the ability to actively adjust the wireless environment to meet strict performance indicators. Reconfigurable Intelligent Surface (RIS) technology is gaining attention for its advantages of low power…

信息论 · 计算机科学 2024-10-28 De-Ming Chian , Chao-Kai Wen , Chi-Hung Wu , Fu-Kang Wang , Kai-Kit Wong

Antenna selection is capable of reducing the hardware complexity of massive multiple-input multiple-output (MIMO) networks at the cost of certain performance degradation. Reconfigurable intelligent surface (RIS) has emerged as a…

信息论 · 计算机科学 2020-09-17 Jinglian He , Kaiqiang Yu , Yuanming Shi , Yong Zhou , Wei Chen , Khaled B. Letaief

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

Reconfigurable Intelligent Surface (RIS) technology has emerged as a key enabler for future wireless communications. However, its potential is constrained by the difficulty of acquiring accurate user-to-RIS channel state information (CSI),…

信号处理 · 电气工程与系统科学 2026-04-20 Md. Shahriar Sadid , Ali A. Nasir , Saad Al-Ahmadi , Samir Al-Ghadhban

Reconfigurable intelligent surfaces (RISs) offer a low-cost, energy-efficient means for enhancing wireless coverage. Yet, their inherently programmable reflections may unintentionally amplify interference, particularly in large-scale,…

网络与互联网体系结构 · 计算机科学 2026-02-10 Kaining Wang , Bo Yang , Yusheng Lei , Zhibo Li , Zhiwen Yu , Xuelin Cao , Bin Guo , George C. Alexandropoulos , Dusit Niyato , Mérouane Debbah , Zhu Han

A reconfigurable intelligent surface (RIS) is a nearly-passive flat layer made of inexpensive elements that can add a tunable phase shift to the impinging electromagnetic wave and are controlled by a low-power electronic circuit. This paper…

信号处理 · 电气工程与系统科学 2022-05-04 Stefano Buzzi , Emanuele Grossi , Marco Lops , Luca Venturino

Reconfigurable intelligent surfaces (RIS) can both help and hinder the physical layer secret key generation (PL-SKG) of communications systems. Whilst a legitimate RIS can yield beneficial impacts, including increased channel randomness to…

密码学与安全 · 计算机科学 2024-12-10 Zhuangkun Wei , Wenxiu Hu , Junqing Zhang , Weisi Guo , Julie McCann

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

The intelligent reflecting surface (IRS) is a promising new paradigm in wireless communications for meeting the growing connectivity demands in next-generation mobile networks. IRS, also known as software-controlled metasurfaces, consist of…

密码学与安全 · 计算机科学 2021-08-04 Paul Staat , Harald Elders-Boll , Markus Heinrichs , Christian Zenger , Christof Paar

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

This paper studies reconfigurable intelligent surface (RIS) assisted device activity detection for grant-free (GF) uplink transmission in wireless communication networks. In particular, we consider mobile devices located in an area where…

信号处理 · 电气工程与系统科学 2024-10-28 Friedemann Laue , Vahid Jamali , Robert Schober

Reconfigurable surface (RS) has been shown to be an effective solution for improving wireless communication links in general multi-user multiple-input multiple-output (MU-MIMO) setting. Current research efforts have been largely directed…

信息论 · 计算机科学 2023-10-31 Juan Vidal Alegria , Joao Vieira , Fredrik Rusek

Reconfigurable intelligent surfaces (RIS) have emerged as a transformative technology for electromagnetic (EM) wave manipulation, offering unprecedented control over wave reflections compared to traditional metallic reflectors. By utilizing…

信号处理 · 电气工程与系统科学 2025-06-11 Hossein Rezaei , Mehmet Emin Arslan , George Yammine , Niels Neumann , Norman Franchi