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We investigate reconfigurable intelligent surface (RIS)-assisted simultaneous wireless information and power transfer (SWIPT) Internet of Things (IoT) networks, where energy-limited IoT devices are overlaid with cellular information users…

信息论 · 计算机科学 2024-07-18 Mohammadali Mohammadi , Hien Quoc Ngo , Michail Matthaiou

The existence of noisy labels in real-world data negatively impacts the performance of deep learning models. Although much research effort has been devoted to improving robustness to noisy labels in classification tasks, the problem of…

计算机视觉与模式识别 · 计算机科学 2021-04-13 Chang Liu , Han Yu , Boyang Li , Zhiqi Shen , Zhanning Gao , Peiran Ren , Xuansong Xie , Lizhen Cui , Chunyan Miao

In many wireless application scenarios, acquiring labeled data can be prohibitively costly, requiring complex optimization processes or measurement campaigns. Semi-supervised learning leverages unlabeled samples to augment the available…

信息论 · 计算机科学 2024-10-08 Houssem Sifaou , Osvaldo Simeone

The process of contact tracing to reduce the spread of highly infectious and life-threatening diseases has traditionally been a primarily manual process managed by public health entities. This process becomes challenged when faced with a…

信号处理 · 电气工程与系统科学 2020-07-08 Gary F. Hatke , Monica Montanari , Swaroop Appadwedula , Michael Wentz , John Meklenburg , Louise Ivers , Jennifer Watson , Paul Fiore

Accurate, real-time wireless signal prediction is essential for next-generation networks. However, existing vision-based frameworks often rely on computationally intensive models and are also sensitive to environmental interference. To…

信号处理 · 电气工程与系统科学 2026-05-26 Sen Yan , Tianyu Hu , Brahim Mefgouda , Samson Lasaulce , Merouane Debbah

The technology of reconfigurable intelligent surfaces (RIS) has been showing promising potential in a variety of applications relying on Beyond-5G networks. Reconfigurable intelligent surface (RIS) can indeed provide fine channel…

Digital contact tracing approaches based on Bluetooth low energy (BLE) have the potential to efficiently contain and delay outbreaks of infectious diseases such as the ongoing SARS-CoV-2 pandemic. In this work we propose a novel machine…

We investigate the problem of reconfigurable intelligent surface (RIS)-aided near-field localization of a user equipment (UE) served by a base station (BS) under phase-dependent amplitude variations at each RIS element. Through a…

信号处理 · 电气工程与系统科学 2022-09-30 Cuneyd Ozturk , Musa Furkan Keskin , Henk Wymeersch , Sinan Gezici

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

Internet of Things (IoT) systems may be deployed to monitor spatially distributed quantities of interests (QoIs), such as noise or pollution levels. This paper considers a fog-based IoT network, in which active IoT devices transmit…

信息论 · 计算机科学 2020-04-23 Rahif Kassab , Osvaldo Simeone , Petar Popovski

Beam management (BM), i.e., the process of finding and maintaining a suitable transmit and receive beam pair, can be challenging, particularly in highly dynamic scenarios. Side-information, e.g., orientation, from on-board sensors can…

信号处理 · 电气工程与系统科学 2022-02-07 Khuong N. Nguyen , Anum Ali , Jianhua Mo , Boon Loong Ng , Vutha Va , Jianzhong Charlie Zhang

The precoding in cell-free massive multiple-input multiple-output (MIMO) technology relies on accurate knowledge of channel responses between users (UEs) and access points (APs). Obtaining high-quality channel estimates in turn requires the…

信息论 · 计算机科学 2021-01-27 Giovanni Interdonato , Pål Frenger , Erik G. Larsson

A reconfigurable intelligent surface (RIS) allows a reflection transmission path between a base station (BS) and user equipment (UE). In wireless localization, this reflection path aids in positioning accuracy, especially when the…

信号处理 · 电气工程与系统科学 2023-06-14 Wei Zhang , Zhenni Wang , Wee Peng Tay

Algorithms for state estimation of humanoid robots usually assume that the feet remain flat and in a constant position while in contact with the ground. However, this hypothesis is easily violated while walking, especially for human-like…

Backscatter communication (BC) has emerged as a key technology to satisfy the increasing need for low-cost and green Internet-of-Things (IoT) connectivity, especially in large-scale deployments. Unlike the monostatic BC (MoBC), the bistatic…

信号处理 · 电气工程与系统科学 2024-07-26 Ahmet Kaplan , Diana P. M. Osorio , Erik G. Larsson

Radio Frequency Identification (RFID) tracking may be a viable solution for defense assets that must be stored in accordance with security guidelines. However, poor sensor specificity (vulnerabilities include long range detection, spoofing,…

机器学习 · 计算机科学 2025-10-24 Curtis Lee Shull , Merrick Green

We present a method to improve the accuracy of a zero-velocity-aided inertial navigation system (INS) by replacing the standard zero-velocity detector with a long short-term memory (LSTM) neural network. While existing threshold-based…

机器人学 · 计算机科学 2019-08-14 Brandon Wagstaff , Jonathan Kelly

Stereo vision generally involves the computation of pixel correspondences and estimation of disparities between rectified image pairs. In many applications, including simultaneous localization and mapping (SLAM) and 3D object detection, the…

计算机视觉与模式识别 · 计算机科学 2020-11-11 WeiQin Chuah , Ruwan Tennakoon , Reza Hoseinnezhad , Alireza Bab-Hadiashar , David Suter

A reconfigurable intelligent surface (RIS) is a nearly-passive flat layer made of inexpensive elements that can add a tunable phase shift to the impinging electromagnetic wave and are controlled by a low-power electronic circuit. This paper…

信号处理 · 电气工程与系统科学 2022-05-04 Stefano Buzzi , Emanuele Grossi , Marco Lops , Luca Venturino

Bluetooth Low Energy (BLE) is widely used in modern IoT systems because it consumes very little power, saves energy, and allows for simple device connectivity; however, maintaining security and communication reliability remains a challenge.…

密码学与安全 · 计算机科学 2026-05-05 Nitesh Yadav , Vashisht Kumar , Sachin Kadam