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Reconfigurable intelligent surface (RIS)-assisted communications appear as a promising candidate for future wireless systems due to its attractive advantages in terms of implementation cost and end-to-end system performance. In this paper,…

信号处理 · 电气工程与系统科学 2020-08-11 Aymen Khaleel , Ertugrul Basar

In the upcoming sixth generation (6G) of wireless communication systems, reconfigurable intelligent surfaces~(RISs) are regarded as one of the promising technological enablers, which can provide programmable signal propagation. Therefore,…

信号处理 · 电气工程与系统科学 2022-12-15 Hyowon Kim , Hui Chen , Musa Furkan Keskin , Yu Ge , Kamran Keykhosravi , George C. Alexandropoulos , Sunwoo Kim , Henk Wymeersch

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

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…

信号处理 · 电气工程与系统科学 2025-10-29 M. T. Hassan , D. Zelenchuk , M. A. B. Abbasi

A reconfigurable intelligent surface (RIS) can shape the radio propagation environment by virtue of changing the impinging electromagnetic waves towards any desired directions, thus, breaking the general Snell's reflection law. However, the…

信号处理 · 电气工程与系统科学 2021-01-15 Jiguang He , Henk Wymeersch , Markku Juntti

Reconfigurable intelligent surfaces (RISs) have been proposed as a key enabler to improve the coverage of the signals and mitigate the frequent blockages in millimeter wave (mmWave) multiple-input multiple-output (MIMO) communications.…

信号处理 · 电气工程与系统科学 2021-07-16 Rafaela Schroeder , Jiguang He , Glauber Brante , Markku Juntti

A multiuser multiple-input multiple-output wireless communication system is analytically studied, which operates with the aid of a reconfigurable intelligent surface (RIS). The intermediate RIS is equipped with multiple elements and…

Reconfigurable Intelligent Surfaces (RIS) are planar structures connected to electronic circuitry, which can be employed to steer the electromagnetic signals in a controlled manner. Through this, the signal quality and the effective data…

信息论 · 计算机科学 2021-12-21 Long Kong , Steven Kisseleff , Symeon Chatzinotas , Björn Ottersten , Melike Erol-Kantarci

This paper investigates an infra-structure free global localization of a group of communicating mobile agents (e.g., first responders or exploring robots) via an ultra-wideband (UWB) inter-agent ranging aided dead-reckoning. We propose a…

信号处理 · 电气工程与系统科学 2021-01-01 Jianan Zhu , Solmaz S. Kia

The received signal strength (RSS) based technique is extensively utilized for localization in the indoor environments. Since the RSS values of neighboring locations may be similar, the localization accuracy of the RSS based technique is…

信号处理 · 电气工程与系统科学 2023-03-27 Haobo Zhang , Hongliang Zhang , Boya Di , Kaigui Bian , Zhu Han , Lingyang Song

Large-scale reconfigurable intelligent surface (RIS) can effectively enhance the performance of millimeter wave (mmWave) unmanned aerial vehicle (UAV) to ground communication link with obstructed line-of-sight (LoS) path by exploiting more…

信号处理 · 电气工程与系统科学 2023-07-25 Baiping Xiong , Zaichen Zhang , Jiangzhou Wang

In this paper, a 2-stage robust distributed algorithm is proposed for cooperative sensor network localization using time of arrival (TOA) data without identification of non-line of sight (NLOS) links. In the first stage, to overcome the…

网络与互联网体系结构 · 计算机科学 2014-03-04 Siamak Yousefi , Xiao-Wen Chang , Benoit Champagne

This paper presents a non-cooperative source localization approach based on received signal strength (RSS) and 2D environment map, considering both line-of-sight (LOS) and non-line-of-sight (NLOS) conditions. Conventional localization…

信号处理 · 电气工程与系统科学 2025-06-11 Hao Sun , Weiming Huang , Xianghao Yu , Junting Chen

Reconfigurable intelligent surface (RIS) can improve the communications between a source and a destination. Recently, continuous aperture RIS is proved to have better communication performance than discrete aperture RIS and has received…

信号处理 · 电气工程与系统科学 2022-10-04 Yuhua Jiang , Feifei Gao , Mengnan Jian , Shun Zhang , Wei Zhang

Reconfigurable intelligent surfaces (RISs) offer a viable way to improve the performance of multi-hop device-to-device (D2D) communication. However, due to the substantial propagation and penetration losses of the millimeter waves…

网络与互联网体系结构 · 计算机科学 2025-08-15 Lakshmikanta Sau , Sasthi C. Ghosh

Intelligent reflecting surface (IRS) has the potential to enhance sensing performance, due to its capability of reshaping the echo signals. Different from the existing literature, which has commonly focused on IRS beamforming optimization,…

信号处理 · 电气工程与系统科学 2024-07-08 Zhouyuan Yu , Xiaoling Hu , Chenxi Liu , Qin Tao , Mugen Peng

Multi-static backscatter networks (BNs) are strong candidates for joint communication and localization in the ambient IoT paradigm for 6G. Enabling real-time localization in large-scale multi-static deployments with thousands of devices…

信号处理 · 电气工程与系统科学 2026-02-17 Tara Esmaeilbeig , Kartik Patel , Traian E. Abrudan , John Kimionis , Eleftherios Kampianakis , Michael S. Eggleston

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

Forthcoming 6G networks have two predominant features of wide coverage and sufficient computation capability. To support the promising applications, Integrated Sensing, Communication, and Computation (ISCC) has been considered as a vital…

系统与控制 · 电气工程与系统科学 2024-07-17 Bin Li , Wancheng Xie , Zesong Fei

Reconfigurable intelligent surface (RIS) is a promising solution to deal with the blockage-sensitivity of millimeter wave band and reduce the high energy consumption caused by network densification. However, deploying large scale RISs may…

信息论 · 计算机科学 2024-02-12 Yining Xu , Sheng Zhou