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The study of human gait recognition has been becoming an active research field. In this paper, we propose to adopt the attention-based Recurrent Neural Network (RNN) encoder-decoder framework to implement a cycle-independent human gait and…

Human-Computer Interaction · Computer Science 2019-02-01 Yang Xu , Min Chen , Wei Yang , Sheng Chen , Liusheng Huang

Channel charting is an emerging technology that enables self-supervised pseudo-localization of user equipments by performing dimensionality reduction on large channel-state information (CSI) databases that are passively collected at…

Signal Processing · Electrical Eng. & Systems 2021-10-22 Brian Rappaport , Emre Gönültaş , Jakob Hoydis , Maximilian Arnold , Pavan Koteshwar Srinath , Christoph Studer

One of the key technologies for future large-scale location-aware services covering a complex of multi-story buildings --- e.g., a big shopping mall and a university campus --- is a scalable indoor localization technique. In this paper, we…

Networking and Internet Architecture · Computer Science 2018-06-26 Kyeong Soo Kim , Sanghyuk Lee , Kaizhu Huang

In this paper, we consider people counting and localization systems exploiting channel state information (CSI) measured from commodity WiFi network interface cards (NICs). While CSI has useful information of amplitude and phase to describe…

Information Theory · Computer Science 2026-05-01 Jihoon Cha , Hwanjin Kim , Junil Choi

For Cyper-Physical Production Systems (CPPS), localization is becoming increasingly important as wireless and mobile devices are considered an integral part. While localizing targets in a wireless communication system based on the Received…

Information Theory · Computer Science 2021-05-03 Thomas Blazek , Julian Karoliny , Fjolla Ademaj , Hans-Peter Bernhard

Uplink sensing in perceptive mobile networks (PMNs), which uses uplink communication signals for sensing the environment around a base station, faces challenging issues of clock asynchronism and the requirement of a line-of-sight (LOS) path…

Information Theory · Computer Science 2022-11-08 Zhitong Ni , J. Andrew Zhang , Kai Wu , Ren Ping Liu

This paper presents a novel indoor positioning approach that leverages antenna radiation pattern characteristics through Received Signal Strength Indication (RSSI) measurements in a single-antenna system. By rotating the antenna or…

Signal Processing · Electrical Eng. & Systems 2025-03-04 Zhisheng Rong , Wenzhi Liu , Xiayue Liu , Zhixiang Xu , Yufei Jiang , Xu Zhu

Time division duplexing (TDD) has become the dominant duplexing mode in 5G and beyond due to its ability to exploit channel reciprocity for efficient downlink channel state information (CSI) acquisition. However, channel aging caused by…

Signal Processing · Electrical Eng. & Systems 2025-10-29 Francisco Díaz-Ruiz , Francisco J. Martín-Vega , José Antonio Cortés , Gerardo Gómez , Mari Carmen Aguayo-Torres

In this paper, we propose a learning-based low-overhead channel estimation method for coordinated beamforming in ultra-dense networks. We first show through simulation that the channel state information (CSI) of geographically separated…

Information Theory · Computer Science 2017-05-16 Sheng Chen , Zhiyuan Jiang , Jingchu Liu , Rath Vannithamby , Sheng Zhou , Zhisheng Niu , Ye Wu

Reconfigurable intelligent surfaces (RIS) are passive controllable arrays of small reflectors that direct electromagnetic energy towards or away from the target nodes, thereby allowing better management of signals and interference in a…

Information Theory · Computer Science 2023-01-13 Bharath Shamasundar , Negar Daryanavardan , Aria Nosratinia

Wi-Fi sensing has emerged as a versatile tool for tasks such as localization, gesture recognition, and vital-sign monitoring, enabling applications from smart environments to personalized healthcare. However, sensing accuracy often…

Signal Processing · Electrical Eng. & Systems 2026-05-27 Fabian Portner , Francesco Gringoli , Matthias Hollick , Arash Asadi

Nowadays, modern earth observation programs produce huge volumes of satellite images time series (SITS) that can be useful to monitor geographical areas through time. How to efficiently analyze such kind of information is still an open…

Computer Vision and Pattern Recognition · Computer Science 2017-11-22 Dino Ienco , Raffaele Gaetano , Claire Dupaquier , Pierre Maurel

To fully exploit the advantages of massive multiple-input multiple-output (m-MIMO), accurate channel state information (CSI) is required at the transmitter. However, excessive CSI feedback for large antenna arrays is inefficient and thus…

Information Theory · Computer Science 2021-05-24 Yuyao Sun , Wei Xu , Le Liang , Ning Wang , Geoffery Ye Li , Xiaohu You

Sensing using cellular infrastructure may be one of the defining feature of sixth generation (6G) wireless systems. Wideband 6G communication channels operating at higher frequency bands (upper mmWave bands) are better modeled using…

Information Theory · Computer Science 2024-11-12 Vijaya Yajnanarayana , Henk Wymeersch

Wireless sensing is a promising technology for future wireless communication networks to realize various application services. Wireless local area network (WLAN)-based localization approaches using channel state information (CSI) have been…

Signal Processing · Electrical Eng. & Systems 2024-10-28 Osamu Muta , Kazuki Noguchi , Junsuke Izumi , Shunsuke Shimizu , Tomoki Murakami , Shinya Otsuki

In the present era of sustainable innovation, the circular economy paradigm dictates the optimal use and exploitation of existing finite resources. At the same time, the transition to smart infrastructures requires considerable investment…

Machine Learning · Computer Science 2023-10-26 Ioannis Nasios , Konstantinos Vogklis , Avleen Malhi , Anastasia Vayona , Panos Chatziadam , Vasilis Katos

Using WiFi signals for indoor localization is the main localization modality of the existing personal indoor localization systems operating on mobile devices. WiFi fingerprinting is also used for mobile robots, as WiFi signals are usually…

Robotics · Computer Science 2017-05-01 Michał Nowicki , Jan Wietrzykowski

In this paper, we propose a learning-based low-overhead beam alignment method for vehicle-to-infrastructure communication in vehicular networks. The main idea is to remotely infer the optimal beam directions at a target base station in…

Information Theory · Computer Science 2018-12-05 Sheng Chen , Zhiyuan Jiang , Sheng Zhou , Zhisheng Niu

Smartphones have become a popular tool for indoor localization and position estimation of users. Existing solutions mainly employ Wi-Fi, RFID, and magnetic sensing techniques to track movements in crowded venues. These are highly sensitive…

Signal Processing · Electrical Eng. & Systems 2021-07-16 Amir Ivry , Elad Fisher , Roger Alimi , Idan Mosseri , Kanna Nahir

In order to break through the development bottleneck of modern wireless communication networks, a critical issue is the out-of-date channel state information (CSI) in high mobility scenarios. In general, non-stationary CSI has statistical…

Signal Processing · Electrical Eng. & Systems 2024-01-17 Guanzhang Liu , Zhengyang Hu , Lei Wang , Hongying Zhang , Jiang Xue , Michail Matthaiou