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We propose a method for predicting the location of user equipment (UE) using wireless fingerprints in dynamic indoor non-line-of-sight (NLoS) environments. In particular, our method copes with the challenges posed by the drift, birth, and…

Signal Processing · Electrical Eng. & Systems 2024-08-28 Rafail Ismayilov , Renato L. G. Cavalcante , Slawomir Stanczak

In this work, we present a wireless localization method that operates on self-supervised and unlabeled channel estimates. Our self-supervising method learns general-purpose channel features robust to fading and system impairments. Learned…

Signal Processing · Electrical Eng. & Systems 2023-02-15 Artan Salihu , Stefan Schwarz , Markus Rupp

Device-free human tracking is an essential ingredient for ubiquitous wireless sensing. Recent passive WiFi tracking systems face the challenges of inaccurate separation of dynamic human components and time-consuming estimation of…

Networking and Internet Architecture · Computer Science 2021-09-14 Zhongqin Wang , J. Andrew Zhang , Min Xu , Y. Jay Guo

The IEEE 802.11mc standard introduces fine time measurement (Wi-Fi FTM), allowing high-precision synchronization between peers and round-trip time calculation (Wi-Fi RTT) for location estimation - typically with a precision of one to two…

Networking and Internet Architecture · Computer Science 2023-03-08 Govind Singh , Anshul Pandey , Monika Prakash , Martin Andreoni , Michael Baddeley

Wireless power transfer (WPT) is an emerging paradigm that will enable using wireless to its full potential in future networks, not only to convey information but also to deliver energy. Such networks will enable trillions of future…

Information Theory · Computer Science 2021-01-14 Bruno Clerckx , Kaibin Huang , Lav R. Varshney , Sennur Ulukus , Mohamed-Slim Alouini

Indoor localization is getting increasing demands for various cutting-edged technologies, like Virtual/Augmented reality and smart home. Traditional model-based localization suffers from significant computational overhead, so fingerprint…

Signal Processing · Electrical Eng. & Systems 2023-09-26 Ruihao Yuan , Kaixuan Huang , Pan Yang , Shunqing Zhang

Far-field Wireless Power Transfer (WPT) has emerged as a potential power source for the Internet of Things (IoT) and Wireless Sensor Network (WSN).The expansion of the power transfer range is one of the key challenges to make the technology…

Information Theory · Computer Science 2021-03-12 Junghoon Kim , Bruno Clerckx

The accurate modeling of indoor radio propagation is crucial for localization, monitoring, and device coordination, yet remains a formidable challenge, due to the complex nature of indoor environments where radio can propagate along…

Information Theory · Computer Science 2024-01-02 Lihao Zhang , Haijian Sun , Jin Sun , Rose Qingyang Hu

Missing data is a pervasive challenge in wireless networks and many other domains, often compromising the performance of machine learning and deep learning models. To address this, we propose a novel framework, FGATT, that combines the…

Machine Learning · Computer Science 2025-02-04 Jinming Xing , Chang Xue , Dongwen Luo , Ruilin Xing

This paper introduces WavesFM, a novel Wireless Foundation Model (WFM) framework, capable of supporting a wide array of communication, sensing, and localization tasks. Our proposed architecture combines a shared Vision Transformer (ViT)…

Signal Processing · Electrical Eng. & Systems 2025-04-22 Ahmed Aboulfotouh , Elsayed Mohammed , Hatem Abou-Zeid

Localization in indoor environments is essential to further support automation in a wide array of scenarios. Moreover, direction-of-arrival knowledge is essential to supporting high speed millimeter-wave (mmWave) links in indoor…

Robotics · Computer Science 2019-11-12 Letizia Moro , Hani Mehrpouyan

One of the primary goals of future wireless systems is to foster sustainability, for which, radio frequency (RF) wireless power transfer (WPT) is considered a key technology enabler. The key challenge of RF-WPT systems is the extremely low…

Signal Processing · Electrical Eng. & Systems 2023-10-17 Amirhossein Azarbahram , Onel L. A. Lopez , Petar Popovski , Matti Latva-aho

With the ongoing development of Indoor Location-Based Services, the location information of users in indoor environments has been a challenging issue in recent years. Due to the widespread use of WiFi networks, WiFi fingerprinting has…

Distributed, Parallel, and Cluster Computing · Computer Science 2024-06-05 Amin Kargar-Barzi , Ebrahim Farahmand , Nooshin Taheri Chatrudi , Ali Mahani , Muhammad Shafique

This research is aimed to solve the tweet/user geolocation prediction task and provide a flexible methodology for the geotagging of textual big data. The suggested approach implements neural networks for natural language processing (NLP) to…

Computation and Language · Computer Science 2025-01-13 Kateryna Lutsai , Christoph H. Lampert

Indoor positioning systems (IPS) are emerging technologies due to an increasing popularity and demand in location based service (LBS). Because traditional positioning systems such as GPS are limited to outdoor applications, many IPS have…

Signal Processing · Electrical Eng. & Systems 2019-07-08 Erick Schmidt , David Akopian

In the Wireless Localization Matching Problem (WLMP) the challenge is to match pieces of equipment with a set of candidate locations based on wireless signal measurements taken by the pieces of equipment. This challenge is complicated by…

Signal Processing · Electrical Eng. & Systems 2019-08-15 Amin Ghafourian , Orestis Georgiou , Edmund Barter , Thilo Gross

Image matching that finding robust and accurate correspondences across images is a challenging task under extreme conditions. Capturing local and global features simultaneously is an important way to mitigate such an issue but recent…

Computer Vision and Pattern Recognition · Computer Science 2023-11-30 Wenhao Zhong , Jie Jiang

Autonomous robots operating in indoor and GPS denied environments can use LiDAR for SLAM instead. However, LiDARs do not perform well in geometrically-degraded environments, due to the challenge of loop closure detection and computational…

In recent years, WiFi sensing has been recognized as a promising technology to bring respiratory monitoring into everyday homes, thanks to its contactless nature and ubiquitous availability. However, existing WiFi-based respiratory…

Signal Processing · Electrical Eng. & Systems 2026-04-23 Hefei Wang , Jianwei Liu , Yinghui He , Guanding Yu , Jinsong Han

Indoor Positioning Systems (IPS) traditionally rely on odometry and building infrastructures like WiFi, often supplemented by building floor plans for increased accuracy. However, the limitation of floor plans in terms of availability and…

Computer Vision and Pattern Recognition · Computer Science 2024-03-13 Zhaoguang Yi , Xiangyu Wen , Qiyue Xia , Peize Li , Francisco Zampella , Firas Alsehly , Chris Xiaoxuan Lu
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