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Reconfigurable intelligent surfaces (RISs) have promising coverage and data rate gains for wireless communication systems in 5G and beyond. Prior work has mainly focused on analyzing the performance of these surfaces using computer…

This paper explores distributed Reconfigurable Intelligent Surfaces (RISs) by introducing a cooperative dimension that enhances adaptability and performance. It focuses on strategically deploying multiple RISs to improve connectivity with…

Signal Processing · Electrical Eng. & Systems 2024-11-13 Youssef Hussein , Mohamad Assaad , Thierry Clessienne

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…

Signal Processing · Electrical Eng. & Systems 2026-03-05 Sung Hyuck Hong , Junil Choi

This work introduces FinGAN, a robust received signal strength (RSS) data generator designed to expand RSS fingerprint datasets. Compared to existing generative adversarial models that either rely on known reference positions (RPs) or…

Signal Processing · Electrical Eng. & Systems 2025-10-01 Jiaming Zhang , Jiajun He , Jie Zhang , Okan Yurduseven

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

In this paper, we present a new location fingerprinting database comprised of Wi-Fi received signal strength (RSS) and geomagnetic field intensity measured with multiple devices at a multi-floor building in Xi'an Jiatong-Liverpool…

Reconfigurable Intelligent Surface (RIS) is a promising solution to reconfigure the wireless environment in a controllable way. To compensate for the double-fading attenuation in the RIS-aided link, a large number of passive reflecting…

Information Theory · Computer Science 2021-03-02 Ruizhe Long , Ying-Chang Liang , Yiyang Pei , Erik G. Larsson

Reconfigurable intelligent surface (RIS) is a revolutionary technology for sixth-generation (6G) networks owing to its ability to manipulate wireless environments. As a frequency-selective device, RIS can only effectively shape the…

Information Theory · Computer Science 2022-11-01 Sifan Liu , Rang Liu , Ming Li , Yang Liu , Qian Liu

Millimeter wave (mmWave) communications are vulnerable to blockages and node mobility due to the highly directional signal beams. The emerging Reconfigurable Intelligent Surfaces (RISs) technique can effectively mitigate the blockage…

Signal Processing · Electrical Eng. & Systems 2024-10-28 Xiaowen Tian , Zhi Sun

When sharing sensitive relational databases with other parties, a database owner aims to (i) have privacy guarantees for the database entries, (ii) have liability guarantees (via fingerprinting) in case of unauthorized sharing of its…

Cryptography and Security · Computer Science 2022-03-08 Tianxi Ji , Erman Ayday , Emre Yilmaz , Pan Li

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 surface (RIS) is capable of intelligently manipulating the phases of the incident electromagnetic wave to improve the wireless propagation environment between the base-station (BS) and the users. This paper…

Signal Processing · Electrical Eng. & Systems 2022-09-14 Zhongze Zhang , Tao Jiang , Wei Yu

This paper presents a physics-based channel modeling and optimization framework for reconfigurable intelligent surface (RIS)-assisted downlink multi-user multiple-input single-output (MU-MISO) communication systems in site-specific…

Signal Processing · Electrical Eng. & Systems 2026-03-24 Ziqi Liu , Wei Yu , Sean Victor Hum

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,…

Fluid reconfigurable intelligent surfaces (FRIS) extend conventional reconfigurable intelligent surfaces (RIS) by adding spatial reconfigurability through switchable apertures, pattern-reconfigurable units, fluidic conductive materials, or…

Information Theory · Computer Science 2026-05-22 Xusheng Zhu , Kai-Kit Wong , Sai Xu , Hao Xu , Wen Chen , Hyundong Shin

Reconfigurable Intelligent Surface (RIS) is a new paradigm that enables the reconfiguration of the wireless environment. Based on this feature, RIS can be employed to facilitate Physical-layer Key Generation (PKG). However, this technique…

Information Theory · Computer Science 2021-08-13 Lei Hu , Guyue Li , Hongyi Luo , Aiqun Hu

Reconfigurable Intelligent Surfaces (RIS) or Intelligent Reflecting Surfaces (IRS) are metasurfaces that can be deployed in various places in wireless environments to make these environments controllable and reconfigurable. In this paper,…

Information Theory · Computer Science 2020-01-22 S. Mohammad Razavizadeh , Tommy Svensson

The reconfigurable intelligent surface (RIS) is one of the promising technologies contributing to the next generation smart radio environment. A novel physics-based RIS channel model is proposed. Particularly, we consider the RIS and the…

Signal Processing · Electrical Eng. & Systems 2020-08-04 Jiaqi Xu , Yuanwei Liu

Reconfigurable intelligent surface (RIS) technology is a promising enabler for next-generation (NextG) wireless systems, capable of dynamically shaping the propagation environment. Integrating RIS within the open radio access network…

Signal Processing · Electrical Eng. & Systems 2026-04-21 Ali Fuat Sahin , Sefa Kayraklik , Ali Gorcin , Ibrahim Hokelek , Ertugrul Basar , Halim Yanikomeroglu

Reconfigurable intelligent surface (RIS) is considered as a promising solution for next-generation wireless communication networks due to a variety of merits, e.g., customizing the communication environment. Therefore, deploying multiple…

Signal Processing · Electrical Eng. & Systems 2023-02-09 Mengbing Liu , Chongwen Huang , Marco Di Renzo , Merouane Debbah , Chau Yuen