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Massive MIMO systems are highly efficient but critically rely on accurate channel state information (CSI) at the base station in order to determine appropriate precoders. CSI acquisition requires sending pilot symbols which induce an…

Information Theory · Computer Science 2022-01-06 Luc Le Magoarou , Taha Yassine , Stéphane Paquelet , Matthieu Crussière

This paper aims at the problem of time-of-flight (ToF) estimation using channel state information (CSI) obtainable from commercialized MIMO-OFDM WLAN receivers. It was often claimed that the CSI phase is contaminated with errors of known…

Signal Processing · Electrical Eng. & Systems 2019-02-27 Navid Tadayon , Muhammed T. Rahman , Shuo Han , Shahrokh Valaee , Wei Yu

In this paper, we present Wi-Mose, the first 3D moving human pose estimation system using commodity WiFi. Previous WiFi-based works have achieved 2D and 3D pose estimation. These solutions either capture poses from one perspective or…

Computer Vision and Pattern Recognition · Computer Science 2020-12-29 Yiming Wang , Lingchao Guo , Zhaoming Lu , Xiangming Wen , Shuang Zhou , Wanyu Meng

This paper proposes a combined network structure between convolutional neural network (CNN) and long-short term memory (LSTM) quantifier for WiFi fingerprinting indoor localization. In contrast to conventional methods that utilize only…

Machine Learning · Computer Science 2025-11-11 Minh Tu Hoang , Brosnan Yuen , Kai Ren , Xiaodai Dong , Tao Lu , Hung Le Nguyen , Robert Westendorp , Kishore Reddy

Accurate detection of human presence in indoor environments is important for various applications, such as energy management and security. In this paper, we propose a novel system for human presence detection using the channel state…

Machine Learning · Computer Science 2024-02-09 Li-Hsiang Shen , An-Hung Hsiao , Kuan-I Lu , Kai-Ten Feng

The application of machine learning (ML) techniques in wireless communication domain has seen a tremendous growth over the years especially in the wireless sensing domain. However, the questions surrounding the ML model's inference…

Signal Processing · Electrical Eng. & Systems 2022-10-13 Amit Kachroo , Sai Prashanth Chinnapalli

CSI (Channel State Information) of WiFi systems contains the environment channel response between the transmitter and the receiver, so the people/objects and their movement in between can be sensed. To get CSI, the receiver performs channel…

Cryptography and Security · Computer Science 2021-06-01 Xianjun Jiao , Michael Mehari , Wei Liu , Muhammad Aslam , Ingrid Moerman

Numerous indoor localization techniques have been proposed recently to meet the intensive demand for location based service, and Wi-Fi fingerprint-based approaches are the most popular and inexpensive solutions. Among them, one of the main…

Networking and Internet Architecture · Computer Science 2013-07-25 Zhiping Jiang , Jizhong Zhao , Xiang-Yang Li , Wei Xi , Kun Zhao , Shaojie Tang , Jinsong Han

The use of WiFi signals to sense the physical environment is gaining popularity, with some common applications being motion detection and transmitter localization. Standard-compliant WiFi provides a cost effective, easy and…

Information Theory · Computer Science 2024-08-30 Florian Euchner , Stephan ten Brink

WiFi-based smart human sensing technology enabled by Channel State Information (CSI) has received great attention in recent years. However, CSI-based sensing systems suffer from performance degradation when deployed in different…

Computer Vision and Pattern Recognition · Computer Science 2022-12-20 Dazhuo Wang , Jianfei Yang , Wei Cui , Lihua Xie , Sumei Sun

Modern indoor localization techniques are essential to overcome the weak GPS coverage in indoor environments. Recently, considerable progress has been made in Channel State Information (CSI) based indoor localization with signal…

Signal Processing · Electrical Eng. & Systems 2022-05-18 Liping Wang , Sudeep Pasricha

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

Accurate channel state information (CSI) acquisition is essential for modern wireless systems, which becomes increasingly difficult under large antenna arrays, strict pilot overhead constraints, and diverse deployment environments. Existing…

Information Theory · Computer Science 2026-03-17 Xingyu Zhou , Le Liang , Hao Ye , Jing Zhang , Chao-Kai Wen , Shi Jin

In this paper, we propose BeamSense, a completely novel approach to implement standard-compliant Wi-Fi sensing applications. Wi-Fi sensing enables game-changing applications in remote healthcare, home entertainment, and home surveillance,…

Networking and Internet Architecture · Computer Science 2025-01-22 Khandaker Foysal Haque , Milin Zhang , Francesca Meneghello , Francesco Restuccia

The idea of exploiting the Wi-Fi bursts as the medium for sensing purposes, particularly for the human targets in the indoor environment, was cultivated in both radar and computer science communities and it has became a noticeable research…

Signal Processing · Electrical Eng. & Systems 2022-01-11 Bo Tan , Bo Sun

Massive MIMO brings both motivations and challenges to develop the 5th generation Mobile wireless technology. The promising number of users and the high bitrate offered per unit area are challenged by uplink pilot contamination due to pilot…

Networking and Internet Architecture · Computer Science 2016-05-04 Ahmad Abboud , Jean-Pierre Cances , Ali H. Jaber , Vahid Meghdadi

Light detection and ranging (LiDAR) has been utilized for optimizing wireless communications due to its ability to detect the environment. This paper explores the use of LiDAR in channel estimation for wideband multi-user…

Signal Processing · Electrical Eng. & Systems 2025-03-19 Haotian Zhang , Shijian Gao , Xiang Cheng , Liuqing Yang

With the ever-increasing demand for high-speed wireless data transmission, beamforming techniques have been proven to be crucial in improving the data rate and the signal-to-noise ratio (SNR) at the receiver. However, they require feedback…

Signal Processing · Electrical Eng. & Systems 2023-12-08 Mrugen Deshmukh , Zinan Lin , Hanqing Lou , Mahmoud Kamel , Rui Yang , Ismail Guvenc

This paper studies a WiFi indoor localisation technique based on using a deep learning model and its transfer strategies. We take CSI packets collected via the WiFi standard channel sounding as the training dataset and verify the CNN model…

Machine Learning · Computer Science 2021-03-10 Peizheng Li , Han Cui , Aftab Khan , Usman Raza , Robert Piechocki , Angela Doufexi , Tim Farnham

WiFi sensing based on channel state information (CSI) collected from commodity WiFi devices has shown great potential across a wide range of applications, including vital sign monitoring and indoor localization. Existing WiFi sensing…

Signal Processing · Electrical Eng. & Systems 2025-10-14 Ruiqi Kong , He Chen