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Reconfigurable Intelligent Surfaces (RISs) promise improved, secure and more efficient wireless communications. We propose and demonstrate how to exploit the diversity offered by RISs to generate and select easily differentiable radio maps…

Signal Processing · Electrical Eng. & Systems 2020-10-08 Cam Ly Nguyen , Orestis Georgiou , Gabriele Gradoni

Reconfigurable intelligent surfaces (RISs) have tremendous potential for both communication and localization. While communication benefits are now well-understood, the breakthrough nature of the technology may well lie in its capability to…

Reconfigurable intelligent surfaces (RISs) are regarded as a promising emerging hardware technology to improve the spectrum and energy efficiency of wireless networks by artificially reconfiguring the propagation environment of…

Information Theory · Computer Science 2020-08-18 Xiaojun Yuan , Ying-Jun Angela Zhang , Yuanming Shi , Wenjing Yan , Hang Liu

High-precision localization and environmental sensing are essential for a new wave of applications, ranging from industrial automation and autonomous systems to augmented reality and remote healthcare. Conventional wireless methods,…

The integration of reconfigurable intelligent surfaces (RIS) in wireless environments offers channel programmability and dynamic control over propagation channels, which is expected to play a crucial role in sixth generation (6G) networks.…

Signal Processing · Electrical Eng. & Systems 2025-01-22 Anum Umer , Ivo Müürsepp , Muhammad Mahtab Alam

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…

Signal Processing · Electrical Eng. & Systems 2021-05-05 Yuanwei Liu , Xiao Liu , Xidong Mu , Tianwei Hou , Jiaqi Xu , Marco Di Renzo , Naofal Al-Dhahir

With both the standardization and commercialization completed in an unforeseen pace for the 5th generation (5G) wireless network, researchers, engineers and executives from the academia and the industry have turned their sights on candidate…

Networking and Internet Architecture · Computer Science 2024-02-20 Ruiqi Liu , Qingqing Wu , Marco Di Renzo , Yifei Yuan

Recently there has been a flurry of research on the use of reconfigurable intelligent surfaces (RIS) in wireless networks to create smart radio environments. In a smart radio environment, surfaces are capable of manipulating the propagation…

Signal Processing · Electrical Eng. & Systems 2020-05-05 Mohamed A. ElMossallamy , Hongliang Zhang , Lingyang Song , Karim G. Seddik , Zhu Han , Geoffrey Ye Li

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…

Signal Processing · Electrical Eng. & Systems 2020-10-16 Miguel Dajer , Zhengxiang Ma , Leonard Piazzi , Narayan Prasad , Xiao-Feng Qi , Baoling Sheen , Jin Yang , Guosen Yue

Reconfigurable Intelligent Surfaces (RISs) constitute the enabler for programmable propagation of electromagnetic signals, and are lately being considered as a candidate physical-layer technology for the demanding connectivity, reliability,…

Reconfigurable intelligent surfaces (RISs) or intelligent reflecting surfaces (IRSs), are regarded as one of the most promising and revolutionizing techniques for enhancing the spectrum and/or energy efficiency of wireless systems. These…

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…

Information Theory · Computer Science 2020-09-17 Yiming Liu , Erwu Liu , Rui Wang

In this paper, a novel approach for wireless localization is proposed and experimentally validated that leverages space-time coded reconfigurable intelligent surfaces (RIS). It is demonstrated that applying proper single-bit codes to each…

Systems and Control · Electrical Eng. & Systems 2024-10-29 Mehdi Gholami , Soheil Khajavi , Mohammad Neshat , Simon Tewes , Aydin Sezgin

In this letter, we investigate the design of multiple reconfigurable intelligent sensing surfaces (RISSs) that enhance both communication and sensing tasks. An RISS incorporates additional active elements tailored to improve sensing…

Signal Processing · Electrical Eng. & Systems 2024-09-11 Cheng Luo , Jie Hu , Luping Xiang , Kun Yang , Bo Lei

Reconfigurable intelligent surfaces (RISs) are considered a promising technology for boosting the coverage and for enhancing the spectral efficiency of wireless systems, as well as for taming the wireless environment. The potential benefits…

Information Theory · Computer Science 2021-11-23 Bjorn Sihlbom , Marios I. Poulakis , Marco Di Renzo

Integrated sensing and communications (ISAC) are envisioned to be an integral part of future wireless networks, especially when operating at the millimeter-wave (mmWave) and terahertz (THz) frequency bands. However, establishing wireless…

Signal Processing · Electrical Eng. & Systems 2022-11-03 Sundeep Prabhakar Chepuri , Nir Shlezinger , Fan Liu , George C. Alexandropoulos , Stefano Buzzi , Yonina C. Eldar

Future wireless communication networks are expected to be smarter and more aware of their surroundings, enabling a wide range of context-aware applications. Reconfigurable intelligent surfaces (RISs) are set to play a critical role in…

Information Theory · Computer Science 2025-03-13 Yixuan Huang , Jie Yang , Chao-Kai Wen , Shi Jin

Reconfigurable intelligent surfaces (RISs) are rapidly gaining prominence in the realm of fifth generation (5G)-Advanced, and predominantly, sixth generation (6G) mobile networks, offering a revolutionary approach to optimizing wireless…

Information Theory · Computer Science 2024-06-17 Ertugrul Basar , George C. Alexandropoulos , Yuanwei Liu , Qingqing Wu , Shi Jin , Chau Yuen , Octavia A. Dobre , Robert Schober

The advent of the sixth generation (6G) wireless networks heralds a transformative era for mobile communication, where the integration of cutting-edge technologies like Reconfigurable Intelligent Surfaces (RISs) is paramount in addressing…

Signal Processing · Electrical Eng. & Systems 2024-07-09 Emre Arslan , Ali Tugberk Dogukan , Fatih Kilinc , Ahmet Faruk Coskun , Ertugrul Basar

The demanding objectives for the future sixth generation (6G) of wireless communication networks have spurred recent research efforts on novel materials and radio-frequency front-end architectures for wireless connectivity, as well as…

Information Theory · Computer Science 2022-03-08 Mengnan Jian , George C. Alexandropoulos , Ertugrul Basar , Chongwen Huang , Ruiqi Liu , Yuanwei Liu , Chau Yuen
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