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Recent years have witnessed the rapid development in the research topic of WiFi sensing that automatically senses human with commercial WiFi devices. This work falls into two major categories, i.e., the activity recognition and the indoor…

Human-Computer Interaction · Computer Science 2019-07-22 Fei Wang , Jianwei Feng , Yinliang Zhao , Xiaobin Zhang , Shiyuan Zhang , Jinsong Han

Localization is expected to play a significant role in future wireless networks as positioning and situational awareness, navigation and tracking, are integral parts of 6G usage scenarios. Nevertheless, in many cases localization requires…

Signal Processing · Electrical Eng. & Systems 2024-10-02 Giorgos Stratidakis , Sotiris Droulias , Angeliki Alexiou

When fully implemented, sixth generation (6G) wireless systems will constitute intelligent wireless networks that enable not only ubiquitous communication but also high-accuracy localization services. They will be the driving force behind…

Indoor Wi-Fi positioning remains a challenging problem due to the high sensitivity of radio signals to environmental dynamics, channel propagation characteristics, and hardware heterogeneity. Conventional fingerprinting and model-based…

Machine Learning · Computer Science 2025-10-15 Nayan Sanjay Bhatia , Pranay Kocheta , Russell Elliott , Harikrishna S. Kuttivelil , Katia Obraczka

WiFi-based indoor localization has now matured for over a decade. Most of the current localization algorithms rely on the WiFi access points (APs) in the enterprise network to localize the WiFi user accurately. Thus, the WiFi user's…

Cryptography and Security · Computer Science 2022-11-21 Roshan Ayyalasomayajula , Aditya Arun , Wei Sun , Dinesh Bharadia

Indoor localization becomes a raising demand in our daily lives. Due to the massive deployment in the indoor environment nowadays, WiFi systems have been applied to high accurate localization recently. Although the traditional model based…

Signal Processing · Electrical Eng. & Systems 2019-02-19 Chenlu Xiang , Zhichao Zhang , Shunqing Zhang , Shugong Xu , Shan Cao , Vincent LAU

In the last decade, there has been a great technological advance in the infrastructure of mobile technologies. The increase in the use of wireless local area networks and the use of satellite services are also noticed. The high utilization…

Networking and Internet Architecture · Computer Science 2019-08-21 Daniel Rosa Canêdo , Alexandre Ricardo Soares Romariz

Internet of Things (IoT) device localization is fundamental to smart home functionalities, including indoor navigation and tracking of individuals. Traditional localization relies on relative methods utilizing the positions of anchors…

Information Theory · Computer Science 2024-07-04 Yan Li , Jie Yang , Shang-Ling Shih , Wan-Ting Shih , Chao-Kai Wen , Shi Jin

Recognizing user location with WiFi fingerprints is a popular approach for accurate indoor positioning problems. In this work, our goal is to interpret WiFi fingerprints into actual user locations. However, WiFi fingerprint data can be very…

Machine Learning · Computer Science 2021-01-27 Weizhu Qian , Franck Gechter

Wi-Fi fingerprinting remains one of the most practical solutions for indoor positioning, however, its performance is often limited by the size and heterogeneity of fingerprint datasets, strong Received Signal Strength Indicator variability,…

Machine Learning · Computer Science 2026-01-12 Miguel Matey-Sanz , Joaquín Torres-Sospedra , Joaquín Huerta , Sergio Trilles

Practical data detectors for future wireless systems with hundreds of antennas at the base station must achieve high throughput and low error rate at low complexity. Since the complexity of maximum-likelihood (ML) data detection is…

Information Theory · Computer Science 2016-12-01 Oscar Castañeda , Tom Goldstein , Christoph Studer

Localization defines a term to describe the identifying process of a location within the space of two-dimensional (2D) space or three-dimensional (3D). A localization scheme is an important concern for connecting sensor nodes in remote…

Signal Processing · Electrical Eng. & Systems 2019-08-26 Md Tanvir Hossan

Localization in GPS-denied outdoor locations, such as street canyons in an urban or metropolitan environment, has many applications. Machine Learning (ML) is widely used to tackle this critical problem. One challenge lies in the mixture of…

Signal Processing · Electrical Eng. & Systems 2024-08-08 Lei Chu , Abdullah Alghafis , Andreas F. Molisch

Determining whether nodes can be localized, called localizability detection, is essential for wireless sensor networks (WSNs). This step is required for localizing nodes, achieving low-cost deployments, and identifying prerequisites in…

Signal Processing · Electrical Eng. & Systems 2018-12-31 Hejun Wu , Ao Ding , Lvzhou Li

Artificial Intelligence (AI) solutions for wireless location estimation are likely to prevail in many real-world scenarios. In this work, we demonstrate for the first time how the Cramer-Rao upper bound on localization accuracy can…

Signal Processing · Electrical Eng. & Systems 2024-10-30 Ihsan Ullah , Robert Malaney , Shihao Yan

Location based services, already popular with end users, are now inevitably becoming part of new wireless infrastructures and emerging business processes. The increasingly popular Deep Learning (DL) artificial intelligence methods perform…

Networking and Internet Architecture · Computer Science 2022-11-04 Gregor Cerar , Blaž Bertalanič , Carolina Fortuna

In this paper, a comprehensive survey of the pioneer as well as the state of-the-art localization and tracking methods in the wireless sensor networks is presented. Localization is mostly applicable for the static sensor nodes, whereas,…

Networking and Internet Architecture · Computer Science 2017-01-10 Sudhir Kumar , Rajesh M. Hegde

Location information is often used as a proxy to infer the performance of a wireless communication link. Using a very simple model, this letter unveils a basic statistical relation between the location estimation uncertainty and wireless…

Information Theory · Computer Science 2022-03-29 Tobias Kallehauge , Pablo Ramírez-Espinosa , Kimmo Kansanen , Henk Wymeersch , Petar Popovski

Increasing sources of sensor measurements and prior knowledge have become available for indoor localization on smartphones. How to effectively utilize these sources for enhancing localization accuracy is an important yet challenging…

Networking and Internet Architecture · Computer Science 2015-03-27 Kaiqing Zhang , Hong Hu , Wenhan Dai , Yuan Shen , Moe Z. Win

Mobile device localization in wireless sensor networks is a challenging task. It has already been addressed when the WiFI propagation maps of the access points are modeled deterministically. However, this procedure does not take into…

Statistics Theory · Mathematics 2012-09-27 Thierry Dumont , Sylvain Le Corff