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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

This letter attempts to design a surveillance scheme by adopting an active reconfigurable intelligent surface (RIS). Different from the conventional passive RIS, the active RIS could not only adjust the phase shift but also amplify the…

信息论 · 计算机科学 2024-10-28 Xinyue Hu , Yibo Yi , Kun Li , Hongwei Zhang , Caihong Kai

New reconfigurable intelligent surface (RIS) based amplitude and phase modulation schemes are proposed as an evolution how the phase-only modulation schemes available in the literature. Explicitly, both the amplitude-phase shift keying…

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…

信息论 · 计算机科学 2021-03-02 Ruizhe Long , Ying-Chang Liang , Yiyang Pei , Erik G. Larsson

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…

信号处理 · 电气工程与系统科学 2025-11-24 Ziyuan Zheng , Qingqing Wu , Wen Chen , Weiren Zhu , Ying Gao

The use of Intelligent Reflective Surfaces (IRS) to assist communication and sensing has proven cost-effective in challenging scenarios. For sensing, IRS is shown to sense non-line-of-sight (NLOS) and stealth targets, albeit with…

信号处理 · 电气工程与系统科学 2026-05-07 Sanjeeva Reddy S , Vinod Veera Reddy

Reconfigurable intelligent surfaces (RISs) are set to be a revolutionary technology in the 6th generation of wireless systems. In this work, we study the application of RIS in a multi-user passive localization scenario, where we have one…

信号处理 · 电气工程与系统科学 2021-04-27 Kamran Keykhosravi , Musa Furkan Keskin , Satyam Dwivedi , Gonzalo Seco-Granados , Henk Wymeersch

In this paper, we propose an reconfigurable intelligent surface (RIS) enhanced spectrum sensing system, in which the primary transmitter is equipped with single antenna, the secondary transmitter is equipped with multiple antennas, and the…

信息论 · 计算机科学 2021-07-15 Jungang Ge , Ying-Chang Liang

In this paper, we investigate the integration of integrated sensing and communication (ISAC) and reconfigurable intelligent surfaces (RIS) for providing wide-coverage and ultra-reliable communication and high-accuracy sensing functions. In…

信号处理 · 电气工程与系统科学 2025-02-17 Rang Liu , Ming Li , Qian Liu , A. Lee Swindlehurst

The low-altitude economy is integral to the advancement of numerous sectors, necessitating the development of advanced low-altitude surveillance techniques. Nevertheless, conventional methods encounter limitations of high deployment costs…

信息论 · 计算机科学 2026-01-23 Zhixin Chen , Yixuan Huang , Zhengze Ji , Jie Yang , Shi Jin

Localization which uses holographic multiple input multiple output surface such as reconfigurable intelligent surface (RIS) has gained increasing attention due to its ability to accurately localize users in non-line-of-sight conditions.…

信号处理 · 电气工程与系统科学 2024-01-15 Mengyuan Cao , Haobo Zhang , Boya Di , Hongliang Zhang

Aiming at providing wireless communication systems with environment-perceptive capacity, emerging integrated sensing and communication (ISAC) technologies face multiple difficulties, especially in balancing the performance trade-off between…

信息论 · 计算机科学 2023-07-18 Xin Zhao , Heng Liu , Shiqi Gong , Xin Ju , Chengwen Xing , Nan Zhao

Positioning is expected to be a core function in intelligent transportation systems (ITSs) to support communication and location-based services, such as autonomous driving, traffic control, etc. With the advent of low-cost reflective…

信号处理 · 电气工程与系统科学 2023-11-15 Hui Chen , Pinjun Zheng , Musa Furkan Keskin , Tareq Al-Naffouri , Henk Wymeersch

This paper investigates the multiuser tracking and signal detection problem in integrated sensing and communication (ISAC) systems with the assistance of reconfigurable intelligent surfaces (RISs). Due to the diverse and high user mobility,…

信号处理 · 电气工程与系统科学 2025-09-18 Weifeng Zhu , Junyuan Gao , Shuowen Zhang , Liang Liu

The low-altitude economy (LAE) has emerged and developed in various fields, which has gained considerable interest. To ensure the security of LAE, it is essential to establish a proper sensing coverage scheme for monitoring the unauthorized…

系统与控制 · 电气工程与系统科学 2025-12-11 Ying Zhang , Zeqi Hao , Tingting Zhang

In this work, we consider the target detection problem in a multistatic integrated sensing and communication (ISAC) scenario characterized by the cell-free MIMO communication network deployment, where multiple radio units (RUs) in the…

信息论 · 计算机科学 2024-10-22 Tianyu Yang , Shuangyang Li , Yi Song , Kangda Zhi , Giuseppe Caire

A large network employing integrated sensing and communication (ISAC) where a single transmit signal by the base station (BS) serves both the radar and communication modes is studied. We consider bistatic detection at a passive radar and…

信息论 · 计算机科学 2023-05-24 Konpal Shaukat Ali , Marwa Chafii

Reconfigurable intelligent surface (RIS)-empowered communication is one of the promising 6G technologies that allows the conversion of the wireless channel into an intelligent transmit entity by manipulating the impinging waves using…

信息论 · 计算机科学 2020-09-01 I. Yildirim , A. Uyrus , E. Basar

Reconfigurable intelligent surface (RIS) is an emerging paradigm able to control the propagation environment in wireless systems. Most of the research on RIS has been dedicated to system optimization and, with the advent of beyond diagonal…

信息论 · 计算机科学 2024-06-18 Matteo Nerini , Shanpu Shen , Hongyu Li , Marco Di Renzo , Bruno Clerckx

Reconfigurable intelligent surfaces (RISs) are one of the most promising technological enablers of the next (6th) generation of wireless systems. In this paper, we introduce a novel use-case of the RIS technology in radio localization,…

信号处理 · 电气工程与系统科学 2022-02-24 Kamran Keykhosravi , Gonzalo Seco-Granados , George C. Alexandropoulos , Henk Wymeersch