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Intelligent reflecting surface (IRS) has emerged as a promising technique to enhance wireless communication performance cost effectively. The existing literature has mainly considered IRS being deployed near user terminals to improve their…

信息论 · 计算机科学 2022-05-27 Yuwei Huang , Weidong Mei , Rui Zhang

Due to significant blockage conditions in wireless networks, transmitted signals may considerably degrade before reaching the receiver. The reliability of the transmitted signals, therefore, may be critically problematic due to blockages…

图像与视频处理 · 电气工程与系统科学 2022-09-23 Shakil Ahmed , Ibrahim Abdelmawla , Ahmed E. Kamal , Mohamed Y. Selim

As wireless systems evolve toward Beyond 5G (B5G), the adoption of cell-free (CF) millimeter-wave (mmWave) architectures combined with Reconfigurable Intelligent Surfaces (RIS) is emerging as a key enabler for ultra-reliable, high-capacity,…

This paper addresses an uplink localization problem in which a base station (BS) aims to locate a remote user with the help of reconfigurable intelligent surfaces (RISs). We propose a strategy in which the user transmits pilots sequentially…

信息论 · 计算机科学 2023-12-19 Zhongze Zhang , Tao Jiang , Wei Yu

Limited radio frequency (RF) resources restrict the number of users that can participate in federated learning (FL) thus affecting FL convergence speed and performance. In this paper, we first introduce visible light communication (VLC) as…

信号处理 · 电气工程与系统科学 2021-03-08 Chuanhong Liu , Caili Guo , Yang Yang , Mingzhe Chen , H. Vincent Poor , Shuguang Cui

Extremely large-scale multiple-input multiple-output (XL-MIMO) is gaining attention as a prominent technology for enabling the sixth-generation (6G) wireless networks. However, the vast antenna array and the huge bandwidth introduce a…

信号处理 · 电气工程与系统科学 2024-12-03 Hao Lei , Jiayi Zhang , Huahua Xiao , Derrick Wing Kwan Ng , Bo Ai

We consider distributed optimization over orthogonal collision channels in spatial random access networks. Users are spatially distributed and each user is in the interference range of a few other users. Each user is allowed to transmit…

网络与互联网体系结构 · 计算机科学 2016-10-26 Kobi Cohen , Angelia Nedich , R. Srikant

In this paper, we address active users detection (AUD) in near-field Internet of Things (IoT) networks by exploring prior knowledge of users' locations. We consider a scenario where users are distributed in a semi-circular area within the…

信号处理 · 电气工程与系统科学 2026-02-24 Gabriel Martins de Jesus , Richard Demo Souza , Onel Luis Alcaraz López

This paper presents a computationally efficient and distributed speaker diarization framework for networked IoT-style audio devices. The work proposes a Federated Learning model which can identify the participants in a conversation without…

声音 · 计算机科学 2024-12-02 Amit Kumar Bhuyan , Hrishikesh Dutta , Subir Biswas

Advances in wireless technology have significantly increased the number of wireless connections, leading to higher energy consumption in networks. Among these, base stations (BSs) in radio access networks (RANs) account for over half of the…

信号处理 · 电气工程与系统科学 2024-12-30 Shuo Sun , Chong Huang , Gaojie Chen , Pei Xiao , Rahim Tafazolli

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…

信息论 · 计算机科学 2022-11-01 Sifan Liu , Rang Liu , Ming Li , Yang Liu , Qian Liu

Structural identification and damage detection can be generalized as the simultaneous estimation of input forces, physical parameters, and dynamical states. Although Kalman-type filters are efficient tools to address this problem, the…

应用统计 · 统计学 2022-10-04 Daniz Teymouri , Omid Sedehi , Lambros S. Katafygiotis , Costas Papadimitriou

Virtual Reality (VR) applications require high data rate for a high-quality immersive experience, in addition to low latency to avoid dizziness and motion sickness. One of the key wireless VR challenges is providing seamless connectivity…

网络与互联网体系结构 · 计算机科学 2021-10-07 Mostafa Abdelrahman , Mohammed Elbamby , Vilho Räisänen

In this paper, the problem of associating reconfigurable intelligent surfaces (RISs) to virtual reality (VR) users is studied for a wireless VR network. In particular, this problem is considered within a cellular network that employs…

信息论 · 计算机科学 2020-02-24 Christina Chaccour , Mehdi Naderi Soorki , Walid Saad , Mehdi Bennis , Petar Popovski

Federated Learning (FL) has emerged as a transformative approach in healthcare, enabling collaborative model training across decentralized data sources while preserving user privacy. However, performance of FL rapidly degrades in practical…

机器学习 · 计算机科学 2024-11-05 Sushilkumar Yadav , Irem Bor-Yaliniz

Reconfigurable intelligent surface (RIS) is a promising technological enabler for the 6th generation (6G) of wireless systems with applications in localization and communication. In this paper, we consider the problem of positioning a…

信号处理 · 电气工程与系统科学 2022-11-21 Kamran Keykhosravi , Musa Furkan Keskin , Gonzalo Seco-Granados , Petar Popovski , Henk Wymeersch

Communication in high frequencies such as millimeter wave and terahertz suffer from high path-loss and intense shadowing which necessitates beamforming for reliable data transmission. On the other hand, at high frequencies the channels are…

机器学习 · 计算机科学 2021-02-23 Abbas Khalili , Sundeep Rangan , Elza Erkip

Virtual reality (VR) can create compelling experiences that evoke presence, the sense of ``being there.'' However, problems in rendering can create sensorimotor disruptions that undermine presence and task performance. Presence is typically…

人机交互 · 计算机科学 2025-10-28 Lukas Gehrke , Leonie Terfurth , Klaus Gramann

This paper considers a joint scattering environment sensing and data recovery problem in an uplink integrated sensing and communication (ISAC) system. To facilitate joint scatterers localization and multi-user (MU) channel estimation, we…

信号处理 · 电气工程与系统科学 2025-02-11 An Liu , Wenkang Xu , Wei Xu , Giuseppe Caire

In this paper, we study the performance of federated learning over wireless networks, where devices with a limited energy budget train a machine learning model. The federated learning performance depends on the selection of the clients…

机器学习 · 计算机科学 2024-01-17 Ouiame Marnissi , Hajar EL Hammouti , El Houcine Bergou