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Wi-Fi sensing leveraging plain-text beamforming feedback information (BFI) in multiple-input-multiple-output (MIMO) systems attracts increasing attention. However, due to the implicit relationship between BFI and the channel state…

Signal Processing · Electrical Eng. & Systems 2024-06-11 Xin Li , Jingzhi Hu , Jun Luo

Recent years have witnessed the bloom development of the human-centered wireless sensing applications, in which some human information, such as the user's identity and motions, can be retrieved through analyzing the signal distortion caused…

Cryptography and Security · Computer Science 2020-04-13 Jianwei Liu , Jinsong Han , Lei Yang , Fei Wang , Feng Lin , Kui Ren

One vision of future wireless networks is that they will be deeply integrated and embedded in our lives and will involve the use of personalized mobile devices. User behavior in such networks is bound to affect the network performance. It…

Networking and Internet Architecture · Computer Science 2007-06-30 Wei-jen Hsu , Debojyoti Dutta , Ahmed Helmy

Present Brain-Computer Interfacing (BCI) technology allows inference and detection of cognitive and affective states, but fairly little has been done to study scenarios in which such information can facilitate new applications that rely on…

Human-Computer Interaction · Computer Science 2024-06-03 Luis A. Leiva , V. Javier Traver , Alexandra Kawala-Sterniuk , Tuukka Ruotsalo

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

Reconfigurable intelligent surfaces (RISs) have flexible and exceptional performance in manipulating electromagnetic waves and customizing wireless channels. These capabilities enable them to provide a plethora of valuable activity-related…

Signal Processing · Electrical Eng. & Systems 2023-11-15 Xinyu Li , Jian Wei You , Ze Gu , Qian Ma , Long Chen , Jingyuan Zhang , Shi Jin , Tie Jun Cui

With the popularity of commercial wireless devices, the research based on RF signal has developed rapidly in the past decade. RF signals have great advantages in environmental perception. Wireless signals are transmitted through the…

Networking and Internet Architecture · Computer Science 2022-03-24 Jiaren Xiao

This paper presents DeepCRF, a new framework that harnesses deep learning to extract subtle micro-signals from channel state information (CSI) measurements, enabling robust and resilient radio-frequency fingerprinting (RFF) of…

Signal Processing · Electrical Eng. & Systems 2024-11-12 Ruiqi Kong , He Chen

Channel charting is a recently proposed framework that applies dimensionality reduction to channel state information (CSI) in wireless systems with the goal of associating a pseudo-position to each mobile user in a low-dimensional space:…

Information Theory · Computer Science 2023-04-18 Paul Ferrand , Maxime Guillaud , Christoph Studer , Olav Tirkkonen

Human Activity Recognition (HAR) is the identification and classification of static and dynamic human activities, which find applicability in domains like healthcare, entertainment, security, and cyber-physical systems. Traditional HAR…

Signal Processing · Electrical Eng. & Systems 2025-01-27 Nuno Paulino , Mariana Oliveira , Francisco Ribeiro , Luís Outeiro , Pedro A. Lopes , Francisco Vilarinho , Sofia Inácio , Luís M. Pessoa

Wi-Fi sensing detects human motions and activities by analysing the channel state information (CSI) derived from Wi-Fi transmissions. However, the impact of variable transmission traffic, which dictates the effective sampling rate and…

Machine Learning · Computer Science 2026-05-12 Guolin Yin , Junqing Zhang , Guanxiong Shen , Simon L. Cotton

While Wi-Fi sensing offers a compelling, privacy-preserving alternative to cameras, its practical utility has been fundamentally undermined by a lack of robustness across domains. Models trained in one setup fail to generalize to new…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Cheng Jiang , Yihe Yan , Yanxiang Wang , Chun Tung Chou , Wen Hu

We present DeepCSI, a novel approach to Wi-Fi radio fingerprinting (RFP) which leverages standard-compliant beamforming feedback matrices to authenticate MU-MIMO Wi-Fi devices on the move. By capturing unique imperfections in off-the-shelf…

Networking and Internet Architecture · Computer Science 2022-12-01 Francesca Meneghello , Michele Rossi , Francesco Restuccia

This paper presents a new radiometric fingerprint that is revealed by micro-signals in the channel state information (CSI) curves extracted from commodity Wi-Fi devices. We refer to this new fingerprint as "micro-CSI". Our experiments show…

Signal Processing · Electrical Eng. & Systems 2023-08-02 Ruiqi Kong , He Chen

In this paper, we critically review the potential of today's terrestrial wireless communication systems including wireless cellular technologies (GSM, UMTS, LTE, NR), wireless local area networks (WLANs), and wireless sensor networks…

Signal Processing · Electrical Eng. & Systems 2022-12-01 Tomaž Javornik , Andrej Hrovat , Aleš Švigelj

Wireless communication networks rely heavily on channel state information (CSI) to make informed decision for signal processing and network operations. However, the traditional CSI acquisition methods is facing many difficulties:…

Information Theory · Computer Science 2015-08-25 Jingchu Liu , Ruichen Deng , Sheng Zhou , Zhisheng Niu

Vision based human motion recognition has fascinated many researchers due to its critical challenges and a variety of applications. The applications range from simple gesture recognition to complicated behaviour understanding in…

Computer Vision and Pattern Recognition · Computer Science 2016-08-25 Geetanjali Vinayak Kale , Varsha Hemant Patil

Activity recognition computer vision algorithms can be used to detect the presence of autism-related behaviors, including what are termed "restricted and repetitive behaviors", or stimming, by diagnostic instruments. The limited data that…

Computer Vision and Pattern Recognition · Computer Science 2021-01-12 Peter Washington , Aaron Kline , Onur Cezmi Mutlu , Emilie Leblanc , Cathy Hou , Nate Stockham , Kelley Paskov , Brianna Chrisman , Dennis P. Wall

Crowd behaviour analytics focuses on behavioural characteristics of groups of people instead of individuals' activities. This work considers human queuing behaviour which is a specific crowd behavior of groups. We design a plug-and-play…

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

Advances in wireless communication and signal processing facilitate integrated sensing and communication a compelling technology that intrinsically combines sensing and communication functionalities for the dual purpose exploitation of…

Signal Processing · Electrical Eng. & Systems 2022-07-29 Xinyu Li , Yuanhao Cui , J. Andrew Zhang , Fan Liu , Daqing Zhang , Lajos Hanzo