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Reconfigurable intelligent surface (RIS)-assisted communication appears as one of the potential enablers for sixth generation (6G) wireless networks by providing a new degree of freedom in the system design to telecom operators.…

Signal Processing · Electrical Eng. & Systems 2021-09-21 E. Basar , I. Yildirim , F. Kilinc

Reconfigurable intelligent surface (RIS) has been recognized as a promising solution for enhancing localization accuracy. Traditional RIS-based localization methods typically rely on prior channel knowledge, beam scanning, and pilot-based…

Signal Processing · Electrical Eng. & Systems 2025-04-04 Jiawei Yao , Yijie Mao , Mingzhe Chen

A reconfigurable intelligent surface (RIS) allows a reflection transmission path between a base station (BS) and user equipment (UE). In wireless localization, this reflection path aids in positioning accuracy, especially when the…

Signal Processing · Electrical Eng. & Systems 2023-06-14 Wei Zhang , Zhenni Wang , Wee Peng Tay

The plethora of wirelessly connected devices, whose deployment density is expected to largely increase in the upcoming sixth Generation (6G) of wireless networks, will naturally necessitate substantial advances in multiple access schemes.…

Information Theory · Computer Science 2024-10-29 Konstantinos D. Katsanos , Paolo Di Lorenzo , George C. Alexandropoulos

In this paper, we investigate the potential of reconfigurable intelligent surfaces (RISs) in facilitating passive/device-free three-dimensional (3D) drone localization within existing cellular infrastructure operating at millimeter-wave…

Signal Processing · Electrical Eng. & Systems 2025-01-03 Jiguang He , Charles Vanwynsberghe , Hui Chen , Chongwen Huang , Aymen Fakhreddine

The recent research in the emerging technology of reconfigurable intelligent surfaces (RISs) has identified its high potential for localization and sensing. However, to accurately localize a user placed in the area of influence of an RIS,…

Signal Processing · Electrical Eng. & Systems 2022-10-20 Reza Ghazalian , Hui Chen , George C. Alexandropoulos , Gonzalo Seco-Granados , Henk Wymeersch , Riku Jäntti

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

The integration of advanced localization techniques in the upcoming next generation networks (B5G/6G) is becoming increasingly important for many use cases comprising contact tracing, natural disasters, terrorist attacks, etc. Therefore,…

Networking and Internet Architecture · Computer Science 2022-02-18 Antonio Albanese , Placido Mursia , Vincenzo Sciancalepore , Xavier Costa-Pérez

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…

Signal Processing · Electrical Eng. & Systems 2025-04-15 Steven Rivetti , Ozlem Tugfe Demir , Emil Bjornson , Mikael Skoglund

The rising concept of reconfigurable intelligent surface (RIS) has promising potential for Beyond 5G localization applications. We herein investigate different phase profile designs at a reflective RIS, which enable non-line-of-sight…

Signal Processing · Electrical Eng. & Systems 2022-04-27 Moustafa Rahal , Benoît Denis , Kamran Keykhosravi , Furkan Keskin , Bernard Uguen , Henk Wymeersch

Reconfigurable intelligent surfaces (RISs) are expected to be a key component enabling the mobile network evolution towards a flexible and intelligent 6G wireless platform. In most of the research works so far, RIS has been treated as a…

Signal Processing · Electrical Eng. & Systems 2022-12-09 Yi Lu , Hui Chen , Jukka Talvitie , Henk Wymeersch , Mikko Valkama

Reconfigurable intelligent surfaces (RIS) enable smart wireless environments by dynamically controlling signal propagation to enhance communication and localization. Unmanned aerial vehicles (UAVs) can act as flying base stations and thus,…

Systems and Control · Electrical Eng. & Systems 2025-11-11 Anupam Mondal , Priyadarshi Mukherjee , Sasthi C. Ghosh

Reconfigurable intelligent surface (RIS) is an attractive technology to improve the transmission rate of millimetre-wave (mmWave) communication systems. The previous {research} on RIS technology mainly focused on improving the transmission…

Signal Processing · Electrical Eng. & Systems 2022-11-01 Yunis Xanthos , Wanting Lyu , Songjie Yang , Chadi Assi , Xianbing Zou , Ning Wei

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…

Networking and Internet Architecture · Computer Science 2025-03-31 Guillermo Encinas-Lago , Francesco Devoti , Marco Rossanese , Vincenzo Sciancalepore , Marco Di Renzo , Xavier Costa-Pérez

In this survey paper, we present an extensive review of the use of RIS in 6G radio localization, highlighting their pivotal role as a low-cost, energy-efficient technology that reshapes wireless communication and localization landscapes.…

Signal Processing · Electrical Eng. & Systems 2025-02-05 Anum Umer , Ivo Müürsepp , Muhammad Mahtab Alam , Henk Wymeersch

The increasing demand for Internet of Things (IoT) applications has accelerated the need for robust resource allocation in sixth-generation (6G) networks. In this paper, we propose a reconfigurable intelligent surface (RIS)-assisted upper…

Signal Processing · Electrical Eng. & Systems 2026-02-03 Muddasir Rahim , Soumaya Cherkaoui

The sixth generation (6G) targets ultra reliable, low latency (URLLC) gigabit connectivity in mmWave bands, where directional channels require precise beam alignment. Reconfigurable intelligent surfaces (RIS) reshape wave propagation and…

Signal Processing · Electrical Eng. & Systems 2025-10-29 M. T. Hassan , D. Zelenchuk , M. A. B. Abbasi

Reconfigurable intelligent surfaces (RISs), with the potential to realize a smart radio environment, have emerged as an energy-efficient and a cost-effective technology to support the services and demands foreseen for coming decades. By…

Information Theory · Computer Science 2021-07-13 Sarah Basharat , Syed Ali Hassan , Haris Pervaiz , Aamir Mahmood , Zhiguo Ding , Mikael Gidlund

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 the upcoming vehicular networks, reconfigurable intelligent surfaces (RISs) are considered as a key enabler of user self-localization without the intervention of the access points (APs). In this paper, we investigate the feasibility of…

Signal Processing · Electrical Eng. & Systems 2025-03-28 Hyowon Kim , Navid~Amani , Musa Furkan Keskin , Zhongxia Simon He , Jorge Gil , Gonzalo-Seco Granados , Henk Wymeersch