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This paper introduces the first wireless gesture recognition system that operates using existingWi-Fi signals and devices. To achieve this, we first identify limitations of existing wireless gesture recognition approaches that limit their…

Human-Computer Interaction · Computer Science 2014-11-21 Rajalakshmi Nandakumar , Bryce Kellogg , Shyamnath Gollakota

The advancement of next-generation Wi-Fi technology heavily relies on sensing capabilities, which play a pivotal role in enabling sophisticated applications. In response to the growing demand for large-scale deployments, contemporary Wi-Fi…

Signal Processing · Electrical Eng. & Systems 2025-12-29 Yuxuan Liu , Chiya Zhang , Yifeng Yuan , Chunlong He , Weizheng Zhang , Gaojie Chen

Different technologies have been proposed to provide indoor localisation: magnetic field, bluetooth , WiFi, etc. Among them, WiFi is the one with the highest availability and highest accuracy. This fact allows for an ubiquitous accurate…

We introduce a new dynamic model with the capability of recognizing both activities that an individual is performing as well as where that ndividual is located. Our model is novel in that it utilizes a dynamic graphical model to jointly…

Artificial Intelligence · Computer Science 2012-07-02 Amarnag Subramanya , Alvin Raj , Jeff A. Bilmes , Dieter Fox

While fulfilling communication tasks, wireless signals can also be used to sense the environment. Among various types of sensing media, WiFi signals offer advantages such as widespread availability, low hardware cost, and strong robustness…

Computer Vision and Pattern Recognition · Computer Science 2025-12-05 Ruijing Liu , Cunhua Pan , Jiaming Zeng , Hong Ren , Kezhi Wang , Lei Kong , Jiangzhou Wang

Advances in wireless localization techniques aiming to exploit context-dependent data has been leading to a growing interest in services able of localizing or tracking targets inside buildings with high accuracy and precision. Hence, the…

Networking and Internet Architecture · Computer Science 2023-12-19 Fabien Geyer , Thomas Multerer , Paulo Mendes , Dominic Schupke

Human activity detection has seen a tremendous growth in the last decade playing a major role in the field of pervasive computing. This emerging popularity can be attributed to its myriad of real-life applications primarily dealing with…

Machine Learning · Computer Science 2015-10-20 Jitenkumar Babubhai Rana , Rashmi Shetty , Tanya Jha

Recently several ground-breaking RF-based motion recognition systems were proposed to detect and/or recognize macro/micro human movements. These systems often suffer from various interferences caused by multiple-users moving simultaneously,…

Signal Processing · Electrical Eng. & Systems 2018-10-30 Ning Xiao , Panlong Yang , Yubo Yan , Hao Zhou , Xiang-Yang Li , Haohua Du

Simultaneous localization and mapping (SLAM) has been richly researched in past years particularly with regard to range-based or visual-based sensors. Instead of deploying dedicated devices that use visual features, it is more pragmatic to…

Accurate prediction of human movements is required to enhance the efficiency of physical human-robot interaction. Behavioral differences across various users are crucial factors that limit the prediction of human motion. Although recent…

Robotics · Computer Science 2021-10-12 Hee-Seung Moon , Jiwon Seo

The prevalence of WiFi devices and ubiquitous coverage of WiFi networks provide us the opportunity to extend WiFi capabilities beyond communication, particularly in sensing the physical environment. In this paper, we survey the evolution of…

Networking and Internet Architecture · Computer Science 2022-04-13 Sheng Tan , Jie Yang

Simultaneous Localization and Mapping (SLAM) enables autonomous robots to navigate and execute their tasks through unknown environments. However, performing SLAM in large environments with a single robot is not efficient, and visual or…

Combining different sensing modalities with multiple positions helps form a unified perception and understanding of complex situations such as human behavior. Hence, human activity recognition (HAR) benefits from combining redundant and…

Machine Learning · Computer Science 2024-04-26 Hymalai Bello

This paper presents a novel approach to solve simultaneously the problems of human activity recognition and whole-body motion and dynamics prediction for real-time applications. Starting from the dynamics of human motion and motor system…

Robotics · Computer Science 2023-03-15 Kourosh Darvish , Serena Ivaldi , Daniele Pucci

Wi-Fi-based human activity recognition (HAR) provides substantial convenience and has emerged as a thriving research field, yet the coarse spatial resolution inherent to Wi-Fi significantly hinders its ability to distinguish multiple…

Signal Processing · Electrical Eng. & Systems 2025-10-22 Xin Li , Jingzhi Hu , Yinghui He , Hongbo Wang , Jin Gan , Jun Luo

We present results from a set of experiments in this pilot study to investigate the causal influence of user activity on various environmental parameters monitored by occupant carried multi-purpose sensors. Hypotheses with respect to each…

Human-Computer Interaction · Computer Science 2016-11-17 Ming Jin , Han Zou , Kevin Weekly , Ruoxi Jia , Alexandre M. Bayen , Costas J. Spanos

This paper presents a method for continuous indoor-outdoor environment detection on mobile devices based solely on WiFi fingerprints. Detection of indoor outdoor switching is an important part of identifying a user's context, and it…

Signal Processing · Electrical Eng. & Systems 2019-08-05 Guy Shtar , Bracha Shapira , Lior Rokach

WiFi sensing has been evolving rapidly in recent years. Empowered by propagation models and deep learning methods, many challenging applications are realized such as WiFi-based human activity recognition and gesture recognition. However, in…

Machine Learning · Computer Science 2023-02-20 Jianfei Yang , Xinyan Chen , Dazhuo Wang , Han Zou , Chris Xiaoxuan Lu , Sumei Sun , Lihua Xie

Proximity detection in indoor environments based on WiFi signals has gained significant attention in recent years. Existing works rely on the dynamic signal reflections and their extracted features are dependent on motion strength. To…

Signal Processing · Electrical Eng. & Systems 2024-05-01 Yuqian Hu , Guozhen Zhu , Beibei Wang , K. J. Ray Liu

This paper proposes a novel approach for detecting groups of people that walk "together" (group mobility) as well as the people who walk "alone" (individual movements) using wireless signals. We exploit multiple wireless sniffers to…

Networking and Internet Architecture · Computer Science 2018-08-06 Gürkan Solmaz , Fang-Jing Wu
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