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In this work, we investigate a reconfigurable intelligent surface (RIS) aided integrated sensing and communication scenario, where a base station (BS) communicates with multiple devices in a full-duplex mode, and senses the positions of…

信号处理 · 电气工程与系统科学 2022-08-16 Zhichao Shao , Xiaojun Yuan , Wei Zhang , Marco Di Renzo

Reconfigurable intelligent surface (RIS)-aided localization systems are increasingly recognized for enhancing accuracy in internet of things (IoT) networks. However, prevailing studies tend to either assume a Gaussian distribution for angle…

信号处理 · 电气工程与系统科学 2024-03-19 Tuo Wu , Hong Ren , Cunhua Pan , Yijin Pan , Sheng Hong , Maged Elkashlan , Feng Shu , Jiangzhou Wang

This paper introduces a novel approach of utilizing the reconfigurable intelligent surface (RIS) for joint data modulation and signal beamforming in a multi-user downlink cellular network by leveraging the idea of backscatter communication.…

信息论 · 计算机科学 2021-08-25 Haseeb Ur Rehman , Faouzi Bellili , Amine Mezghani , Ekram Hossain

This paper addresses a near-field imaging problem utilizing extremely large-scale multiple-input multiple-output (XL-MIMO) antennas and reconfigurable intelligent surfaces (RISs) already in place for wireless communications. To this end, we…

信号处理 · 电气工程与系统科学 2024-05-14 Giulia Torcolacci , Anna Guerra , Haiyang Zhang , Francesco Guidi , Qianyu Yang , Yonina C. Eldar , Davide Dardari

This paper is the first to introduce the idea of using reconfigurable intelligent surfaces (RISs) as passive devices that measure the position and orientation of certain human body parts over time. In this paper, we investigate the…

信号处理 · 电气工程与系统科学 2023-07-04 Don-Roberts Emenonye , Anik Sarker , Alan T. Asbeck , Harpreet S. Dhillon , R. Michael Buehrer

Chirp signals have established diverse applications caused by the capable of producing time-dependent linear frequencies. Most feature extraction transformation methods for chirp signals focus on enhancing the performance of transform…

信号处理 · 电气工程与系统科学 2024-01-11 Shuyi Gu , Zhenghua Luo , Lin Hu , Yilin Zhang , Junxiong Guo

Amodal sensing is critical for various real-world sensing applications because it can recover the complete shapes of partially occluded objects in complex environments. Among various amodal sensing paradigms, wireless amodal sensing is a…

信号处理 · 电气工程与系统科学 2026-02-03 Yuhan Wang , Haobo Zhang , Qingyu Liu , Hongliang Zhang , Lingyang Song

Reconfigurable intelligent surface (RIS) is a promising reflective radio technology for improving the coverage and rate of future wireless systems by reconfiguring the wireless propagation environment. The current work mainly focuses on the…

网络与互联网体系结构 · 计算机科学 2021-03-24 Xuelin Cao , Bo Yang , Hongliang Zhang , Chongwen Huang , Chau Yuen , Zhu Han

Reconfigurable intelligent surface (RIS) emerges as an efficient and promising technology for the next wireless generation networks and has attracted a lot of attention owing to the capability of extending wireless coverage by reflecting…

信息论 · 计算机科学 2023-10-20 Changzhu Liu , Ruisi He , Yong Niu , Zhu Han , Bo Ai , Meilin Gao , Zhangfeng Ma , Gongpu Wang , Zhangdui Zhong

To mitigate the effects of shadow fading and obstacle blocking, reconfigurable intelligent surface (RIS) has become a promising technology to improve the signal transmission quality of wireless communications by controlling the…

信息论 · 计算机科学 2021-11-10 Wangyang Xu , Jiancheng An , Yongjun Xu , Chongwen Huang , Lu Gan , Chau Yuen

Index modulation schemes for reconfigurable intelligent surfaces (RIS)-assisted systems are envisioned as promising technologies for fifth-generation-advanced and sixth-generation (6G) wireless communication systems to enhance various…

信息论 · 计算机科学 2023-07-19 Aritra Basu , Soumya P. Dash , Aryan Kaushik , Debasish Ghose , Marco Di Renzo , Yonina C. Eldar

A reconfigurable intelligent surface (RIS) reflects incoming signals in different ways depending on the phase-shift pattern assigned to its elements. The most promising use case is to aid the communication between a base station and a user…

信息论 · 计算机科学 2022-12-06 Emil Björnson , Parisa Ramezani

Integrated sensing and communications (ISAC) is pivotal for 6G communications and is boosted by the rapid development of reconfigurable intelligent surfaces (RISs). Using the channel state information (CSI) across multiple frequency bands,…

信号处理 · 电气工程与系统科学 2024-05-13 Jingzhi Hu , Dusit Niyato , Jun Luo

Current reconfigurable intelligent surface (RIS)-aided near-field (NF) localization methods assume the RIS position is known a priori, and it has limited their practical applicability. This paper applies a hybrid RIS (HRIS) at an unknown…

信号处理 · 电气工程与系统科学 2026-03-19 Hua Chen , Linke Yu , Tuo Wu , Maged Elkashlan , Naofal Al-Dhahir , Merouane Debbah , K. C. Ho

Reconfigurable intelligent surfaces (RISs) are envisioned as a potentially transformative technology for future wireless communications. However, RISs' inability to process signals and the attendant increased channel dimension have brought…

信号处理 · 电气工程与系统科学 2023-02-14 Jieao Zhu , Kunzan Liu , Zhongzhichao Wan , Linglong Dai , Tie Jun Cui , H. Vincent Poor

Reconfigurable intelligent surface (RIS) is a type of wireless communication technology that uses a reconfigurable surface, such as a wall or building that is able to adjust its properties by an integrated optimization algorithm in order to…

应用物理 · 物理学 2023-09-25 Emanuel Colella , Luca Bastianelli , Franco Moglie , Valter Mariani Primiani

In this paper, we propose a novel computer vision-based approach to aid Reconfigurable Intelligent Surface (RIS) for dynamic beam tracking and then implement the corresponding prototype verification system. A camera is attached at the RIS…

信号处理 · 电气工程与系统科学 2022-07-12 Ming Ouyang , Yucong Wang , Feifei Gao , Shun Zhang , Puchu Li , Jian Ren

This study presents an advanced wireless system that embeds target recognition within reconfigurable intelligent surface (RIS)-aided communication systems, powered by cuttingedge deep learning innovations. Such a system faces the challenge…

信息论 · 计算机科学 2025-05-06 Yixuan Huang , Jie Yang , Chao-Kai Wen , Shuqiang Xia , Xiao Li , Shi Jin

We propose a 6D Bayesian-based localization framework to estimate the position and rotation angles of a mobile station (MS) within an indoor reconfigurable intelligent surface (RIS)-aided system. This framework relies on a probabilistic…

信号处理 · 电气工程与系统科学 2025-08-26 Leonardo Tercas , Markku Juntti

In this chapter, we investigate the mathematical foundation of the modeling and design of reconfigurable intelligent surfaces (RIS) in both the far- and near-field regimes. More specifically, we first present RIS-assisted wireless channel…

信号处理 · 电气工程与系统科学 2025-10-16 Mohamadreza Delbari , George C. Alexandropoulos , Robert Schober , Vahid Jamali