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Reconfigurable intelligent surfaces (RISs) are arrays of passive elements that can control the reflection of the incident electromagnetic waves. While RIS are particularly useful to avoid blockages, the protocol aspects for their…

Information Theory · Computer Science 2026-03-16 Victor Croisfelt , Fabio Saggese , Israel Leyva-Mayorga , Radoslaw Kotaba , Gabriele Gradoni , Petar Popovski

Beyond diagonal reconfigurable intelligent surfaces (BD-RIS) have emerged as a promising technology for 6G wireless networks, offering more advanced control over electromagnetic wave propagation than conventional diagonal RIS. This paper…

Signal Processing · Electrical Eng. & Systems 2025-10-01 Kexin Chen , Yijie Mao , Wonjae Shin

Meta-surfaces, also known as Reconfigurable Intelligent Surfaces (RIS), have emerged as a cost-effective, low power consumption, and flexible solution for enabling multiple applications in Internet of Things (IoT). However, in the context…

Signal Processing · Electrical Eng. & Systems 2023-12-18 Yufei Zhao , Yong Liang Guan , Afkar Mohamed Ismail , Gaohua Ju , Deyu Lin , Yilong Lu , Chau Yuen

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…

Signal Processing · Electrical Eng. & Systems 2025-11-24 Ziyuan Zheng , Qingqing Wu , Wen Chen , Weiren Zhu , Ying Gao

As a recently proposed idea for future wireless systems, intelligent reflecting surface (IRS) can assist communications between entities which do not have high-quality direct channels in between. Specifically, an IRS comprises many low-cost…

Information Theory · Computer Science 2020-01-29 Huimei Han , Jun Zhao , Dusit Niyato , Marco Di Renzo , Quoc-Viet Pham

Reconfigurable intelligent surface (RIS) or intelligent reflecting surface (IRS) has recently been envisioned as one of the most promising technologies in the future sixth-generation (6G) communications. In this paper, we consider the joint…

Information Theory · Computer Science 2021-12-14 Zhangjie Peng , Zhiwei Chen , Cunhua Pan , Gui Zhou , Hong Ren

This work focuses on the downlink of a single-cell multi-user system in which a base station (BS) equipped with $M$ antennas communicates with $K$ single-antenna users through a reconfigurable intelligent surface (RIS) installed in the…

Information Theory · Computer Science 2019-12-09 Qurrat-Ul-Ain Nadeem , Abla Kammoun , Anas Chaaban , Merouane Debbah , Mohamed-Slim Alouini

The sustainable design of Internet of Things (IoT) networks encompasses considerations related to energy efficiency and autonomy as well as considerations related to reliable communications, ensuring no energy is wasted on undelivered data.…

Signal Processing · Electrical Eng. & Systems 2025-01-10 Jimmy Fernandez Landivar , Khojiakbar Botirov , Hazem Sallouha , Marcos Katz , Sofie Pollin

Reconfigurable Intelligent Surfaces (RIS) have emerged as a transformative technology in wireless communications, offering unprecedented control over signal propagation. This study focuses on passive beyond diagonal reconfigurable…

Signal Processing · Electrical Eng. & Systems 2025-12-10 Ainna Yue Moreno-Locubiche , Josep Vidal

Reconfigurable Intelligent Surfaces (RIS)-empowered communication has emerged as a transformative technology for next generation wireless networks, enabling the programmable shaping of the propagation environment. However, conventional RISs…

Information Theory · Computer Science 2025-07-23 Recep Akif Tasci , Panagiotis Gavriilidis , Ertugrul Basar , George C. Alexandropoulos

Reconfigurable intelligent surface (RIS) have introduced unprecedented flexibility and adaptability toward smart wireless channels. Recent research on integrated sensing and communication (ISAC) systems has demonstrated that RIS platforms…

Signal Processing · Electrical Eng. & Systems 2024-02-27 Tara Esmaeilbeig , Kumar Vijay Mishra , Mojtaba Soltanalian

Power splitting based simultaneous wireless information and power transfer (PS-SWIPT) appears to be a promising solution to support future self-sustainable Internet of Things (SS-IoT) networks. However, the performance of these networks is…

Signal Processing · Electrical Eng. & Systems 2024-01-12 Haleema Sadia , Ahmad Kamal Hassan , Ziaul Haq Abbas , Ghulam Abbas , Thar Baker

Reconfigurable intelligent surface (RIS)-assisted communication have recently attracted the attention of the wireless communication community as a potential candidate for the next $6$-th generation (6G) of wireless networks. Various studies…

Signal Processing · Electrical Eng. & Systems 2022-05-18 Recep A. Tasci , Fatih Kilinc , Ertugrul Basar , George C. Alexandropoulos

Beyond-diagonal reconfigurable intelligent surfaces (BD-RISs) are an emerging RIS 2.0 technology for future wireless communication. However, BD-RISs are primarily passive without active amplification, suffering from severe multiplicative…

Signal Processing · Electrical Eng. & Systems 2026-03-17 Shanpu Shen , Hongyu Li , Matteo Nerini , Qingqing Wu , Bruno Clerckx

Challenging environments comprise a range of scenarios, which share the fact that it is extremely difficult to establish a communication link using conventional technology due to many impairments typically associated with the propagation…

Signal Processing · Electrical Eng. & Systems 2022-06-23 Steven Kisseleff , Symeon Chatzinotas , Björn Ottersten

This paper presents a batteryless wireless communication node for the Internet of Things, powered entirely by ambient light and capable of receiving data through visible light communication. A solar panel serves dual functions as an energy…

Systems and Control · Electrical Eng. & Systems 2026-01-08 Juan F. Gutierrez , Nhung Nguyen , Jesus M. Quintero , Andres Gomez

Reconfigurable intelligent surface (RIS) has become a promising technology to improve wireless communication in recent years. It steers the incident signals to create a favorable propagation environment by controlling the reconfigurable…

Information Theory · Computer Science 2021-11-15 Wangyang Xu , Lu Gan , Chongwen Huang

Reconfigurable intelligent surfaces (RISs) have been recently considered as a promising candidate for energy-efficient solutions in future wireless networks. Their dynamic and lowpower configuration enables coverage extension, massive…

Information Theory · Computer Science 2022-07-05 Li Wei , Chongwen Huang , Qinghua Guo , Zhaohui Yang , Zhaoyang Zhang , George C. Alexandropoulos , Merouane Debbah , Chau Yuen

The reconfigurable intelligent surface (RIS) technology is a potential solution to enhance network capacity and coverage without significant investment in additional infrastructure in 6G networks. This work highlights the interest of the…

An emerging technology to enhance the spectral efficiency (SE) and energy efficiency (EE) of wireless communication systems is reconfigurable intelligent surface (RIS), which is shown to be very powerful in single-carrier systems. However,…

Information Theory · Computer Science 2024-01-23 Mohammad Soleymani , Ignacio Santamaria , Aydin Sezgin , Eduard Jorswieck
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