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Localization plays an essential role in many ubiquitous computing applications. While the outdoor location-aware services based on GPS are becoming increasingly popular, their proliferation to indoor environments is limited due to the lack…

Networking and Internet Architecture · Computer Science 2013-08-08 Andrei Popleteev , Venet Osmani , Oscar Mayora

In this paper, the field measurements of signal strength taken at the frequency of 2432 MHz in indoor & outdoor environments are presented and analyzed. The received signal levels from the base station were monitored manually. Total…

Networking and Internet Architecture · Computer Science 2013-09-06 Puneet Kumar Mongia , B. J. Singh

Wireless indoor localization using predictive models with received signal strength information (RSSI) requires proper calibration for reliable position estimates. One remedy is to employ synthetic labels produced by a (generally different)…

Machine Learning · Computer Science 2026-05-22 Seonghoon Yoo , Houssem Sifaou , Sangwoo Park , Joonhyuk Kang , Osvaldo Simeone

For decades, the determination of an objects location has been implemented utilizing different technologies. Despite GPS (Global Positioning System) provides a scalable efficient and cost effective location services however the satellite…

Cryptography and Security · Computer Science 2022-10-04 Ali Abdullah S. AlQahtani , Nazim Choudhury

Many localization algorithms and systems have been developed by means of wireless sensor networks for both indoor and outdoor environments. To achieve higher localization accuracy, extra hardware equipments are utilized by most of the…

Networking and Internet Architecture · Computer Science 2016-11-17 Tao Huang , Zhikui Chen , Feng Xia , Cheng Jin , Liang Li

This paper presents a localization method for indoor environments capable of improving the location accuracy that is hampered by instability in RSSI of the IEEE 802.11 networks. The method employs the k-Nearest Neighbors (kNN) algorithm and…

Networking and Internet Architecture · Computer Science 2021-01-01 David Alan de Oliveira Ferreira , Celso Barbosa Carvalho , Edjair de Souza Mota

Wireless Local Area Networks (WLANs), known as Wi-Fi, have become an essential service in university environments that helps staff, students and guests to access connectivity to the Internet from their mobile devices. Apart from the…

Networking and Internet Architecture · Computer Science 2020-04-06 Farhana Binte Kamrul Easha , Robert Abbas , Matthew Daley

Efficient spectrum use in wireless sensor networks through spatial reuse requires effective models of packet reception at the physical layer in the presence of interference. Despite recent progress in analytic and simulations research into…

Networking and Internet Architecture · Computer Science 2014-05-19 Helga Gudmundsdottir , Eyjólfur I Ásgeirsson , Marijke H. L. Bodlaender , Joseph T. Foley , Magnús M. Halldórsson , Ymir Vigfusson

The rise of the Internet of Things (IoT) and mobile internet applications has spurred interest in location-based services (LBS) for commercial, military, and social applications. While the global positioning system (GPS) dominates outdoor…

Machine Learning · Computer Science 2024-02-20 M. W. P. Maduranga

This paper presents an evaluation of the WiFi exposure levels inside the university in the 2.4 GHz frequency band. The selected environment is the typical scenario where WiFi exposure concerns have increased in the last years, since a…

Signal Processing · Electrical Eng. & Systems 2024-02-08 Marta Fernandez , David Guerra , Unai Gil , Inigo Trigo , Ivan Pena , Amaia Arrinda

Global localization is essential for autonomous robotics, especially in indoor environments where the GPS signal is denied. We propose a novel WiFi-based localization framework that leverages ubiquitous wireless infrastructure and the…

Robotics · Computer Science 2025-08-15 Xu Ma , Jiajie Zhang , Fujing Xie , Sören Schwertfeger

This study describes a UWB and Machine Learning (ML)-based indoor positioning system. We propose a simple mathematical strategy to create data to reduce the job of measurements for fingerprint-based indoor localization systems. A…

Signal Processing · Electrical Eng. & Systems 2022-04-11 Anqi Yin , Zihuai Lin

Accurate precise positioning at millimeter wave frequencies is possible due to the large available bandwidth that permits precise on-the-fly time of flight measurements using conventional air interface standards. In addition, narrow antenna…

Information Theory · Computer Science 2019-08-27 Ojas Kanhere , Shihao Ju , Yunchou Xing , Theodore S. Rappaport

This paper proposes passive WiFi indoor localization. Instead of using WiFi signals received by mobile devices as fingerprints, we use signals received by routers to locate the mobile carrier. Consequently, software installation on the…

Signal Processing · Electrical Eng. & Systems 2025-11-04 Minh Tu Hoang , Brosnan Yuen , Kai Ren , Ahmed Elmoogy , Xiaodai Dong , Tao Lu , Hung Le Nguyen Robert Westendorp , Kishore Reddy Tarimala

With the growing integration of location based services (LBS) such as GPS in mobile devices, indoor position systems (IPS) have become an important role for research. There are several IPS methods such as AOA, TOA, TDOA, which use…

Networking and Internet Architecture · Computer Science 2019-07-02 Erick Schmidt , David Akopian

Accurate indoor positioning for wireless communication systems represents an important step towards enhanced reliability and security, which are crucial aspects for realizing Industry 4.0. In this context, this paper presents an…

Signal Processing · Electrical Eng. & Systems 2023-06-07 Ivo Bizon , Zhongju Li , Ahmad Nimr , Marwa Chafii , Gerhard P. Fettweis

Accurate and efficient modeling of indoor wireless signal propagation is crucial for the deployment of next-generation Wi-Fi. This paper presents a digital twin-based measurement system that integrates real-world 3D environment…

Networking and Internet Architecture · Computer Science 2026-02-17 Mengyuan Wang , Haopeng Wang , Haiwei Dong , Abdulmotaleb El Saddik

Due to the growing area of ubiquitous mobile applications, indoor localization of smartphones has become an interesting research topic. Most of the current indoor localization systems rely on intensive site survey to achieve high accuracy.…

Networking and Internet Architecture · Computer Science 2018-04-12 Jose Luis V. Carrera , Zhongliang Zhao , Torsten Braun , Haiyong Luo , Fang Zhao

WiFi sensing is an important part of the new WiFi 802.11bf standard, which can detect motion and measure distances. In recent years, some machine learning methods have been proposed for human activity recognition from WiFi signals. However,…

Human-Computer Interaction · Computer Science 2022-10-24 Hojjat Salehinejad , Navid Hasanzadeh , Radomir Djogo , Shahrokh Valaee

One of the major issues in Wireless Body Area Sensor Networks (WBASNs) is efficient localization. There are various techniques for indoor and outdoor environments to locate a person. This study evaluating and compares performance of…

Networking and Internet Architecture · Computer Science 2012-07-09 Obaid ur Rehman , Nadeem Javaid , Ayesha Bibi , Zahoor Ali Khan