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- research-articleOctober 2023
Accurate E-CID Framework for Indoor Positioning in 5G using Path Tracing and Machine Learning
MSWiM '23: Proceedings of the Int'l ACM Conference on Modeling Analysis and Simulation of Wireless and Mobile SystemsPages 9–17https://doi.org/10.1145/3616388.3623406Locating at-risk workers in hospitals using legacy private 5G networks is a daunting task that involves solving the problem of indoor localization using commercial off-the-shelf proprietary hardware. Currently, no full-stack schemes or realistic indoor ...
- demonstrationOctober 2023
Demo: A Prototype for Detecting and Localizing Hidden Devices in Unfamiliar Environments
MobiHoc '23: Proceedings of the Twenty-fourth International Symposium on Theory, Algorithmic Foundations, and Protocol Design for Mobile Networks and Mobile ComputingPages 314–315https://doi.org/10.1145/3565287.3617905We have designed PanguVision: an Android software system that can be deployed on personal handheld devices (cell phones, PCs, etc.). The prototype described enables the detection of hidden devices and recognition of their types. It utilizes augmented ...
- research-articleOctober 2023
5G NR Monostatic Positioning with Array Impairments: Data-and-Model-Driven Framework and Experiment Results
ISACom '23: Proceedings of the 3rd ACM MobiCom Workshop on Integrated Sensing and Communications SystemsPages 1–6https://doi.org/10.1145/3615984.3616502In this article, we present an intelligent framework for 5G new radio (NR) indoor positioning under a monostatic configuration. The primary objective is to estimate both the angle of arrival and time of arrival simultaneously. This requires capturing the ...
- research-articleOctober 2023
Indoor Localization Method Based on Adaptive Wavelet Threshold Analysis
Automatic Control and Computer Sciences (ACCS), Volume 57, Issue 5Pages 523–533https://doi.org/10.3103/S0146411623050127AbstractTo solve the problem of time-varying in wireless local area network (WLAN) indoor positioning, an adaptive wavelet threshold analysis (AWTA) method was proposed in this paper. The received signal strength (RSS) can be analyzed by wavelet ...
- research-articleSeptember 2023
UWB Hybrid Filtering-Based Mobile IoT Device Tracking
GoodIT '23: Proceedings of the 2023 ACM Conference on Information Technology for Social GoodPages 471–476https://doi.org/10.1145/3582515.3609569The positioning accuracy of UWB-based mobile Internet of Things (IoT) devices is frequently impacted by the complicated indoor environment, which is a common application for automated following mobile IoT devices. To address the issue of abnormal value ...
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- research-articleAugust 2023
Unmanned aerial vehicle orthogonal laser localization by Gaussian mixture model‐based map representation
IET Cyber-Systems and Robotics (CSY2), Volume 5, Issue 3https://doi.org/10.1049/csy2.12096AbstractLocalization is a core problem in mobile robot navigation. Simultaneous localization and mapping (SLAM) costs much for an unmanned aerial vehicle (UAV). This research aims to design an orthogonal laser scan device for localization and to save ...
- research-articleFebruary 2023
Drift‐free localisation using prior cross‐source map for indoor low‐light environments
IET Cyber-Systems and Robotics (CSY2), Volume 5, Issue 1https://doi.org/10.1049/csy2.12081AbstractIn this study, a localisation system without cumulative errors is proposed. First, depth odometry is achieved only by using the depth information from the depth camera. Then the point cloud cross‐source map registration is realised by 3D particle ...
- research-articleJanuary 2023
Hybrid indoor positioning for smart homes using WiFi and Bluetooth low energy technologies
Journal of Ambient Intelligence and Smart Environments (JAISE), Volume 15, Issue 1Pages 63–87https://doi.org/10.3233/AIS-220484In indoor positioning problems, GPS technology used in outdoor positioning needs to be improved due to the characteristic features of wireless signals. There currently needs to be a generally accepted standard method for indoor positioning. In this study, ...
- research-articleJanuary 2023
A WLAN indoor location method based on quadratic wavelet analysis
International Journal of Sensor Networks (IJSNET), Volume 42, Issue 1Pages 67–78https://doi.org/10.1504/ijsnet.2023.131248The drift phenomenon of received signal strength may occur due to the influence of environmental change, which will affect the results of wireless local area network indoor positioning. This paper proposes an indoor location method based on quadratic ...
- research-articleJanuary 2023
Improving indoor positioning system using weighted linear least square and neural network
International Journal of Sensor Networks (IJSNET), Volume 41, Issue 2Pages 67–77https://doi.org/10.1504/ijsnet.2023.129632Indoor positioning has grasped great attention in recent years. Many of those technologies are related to the problem of determining the position of an object in space, such as the robot, people, and so on. In this paper, we combine a range-free method, ...
- research-articleJanuary 2023
Real-time indoor positioning and route guidance system by using beacons
- Sajjad Memon,
- Muhammad Ali Memon,
- Faheem Abassi,
- Fayaz Ahmed Memon,
- Majid Hussain Memon,
- Muhammad Ali Nizamani
International Journal of Intelligent Engineering Informatics (IJIEI), Volume 11, Issue 2Pages 97–121https://doi.org/10.1504/ijiei.2023.132698Real-time tracking of objects an indoor environment has become important in numerous industries, including shopping, logistics, advertising, and healthcare. This paper represents a smartphone-based real time indoor positioning and route guidance system ...
- research-articleOctober 2022
Variability of BLE Advertisement Packets Received Signal Strength and Delivery Probability in the Presence of Interferences
DIVANet '22: Proceedings of the 12th ACM International Symposium on Design and Analysis of Intelligent Vehicular Networks and ApplicationsPages 37–44https://doi.org/10.1145/3551662.3560933The Bluetooth Low Energy (BLE) advertisement messages allow estimating the location and distance between mobile devices. We analyse how the signal level varies depending on interferences, distance and the orientation of the transmitting and receiving ...
- research-articleDecember 2022
Nonlinear Kalman Filter Based Shop Floor RFID Data Fusion Algorithm
CSAE '22: Proceedings of the 6th International Conference on Computer Science and Application EngineeringArticle No.: 53, Pages 1–7https://doi.org/10.1145/3565387.3565440Radio frequency identification (RFID) technology is one of the main means to obtain the location data of production elements such as personnel and materials in intelligent workshops, but its positioning accuracy has many uncertainties. In order to map ...
- research-articleOctober 2022
uGPS: design and field-tested seamless GNSS infrastructure in metro city
MobiCom '22: Proceedings of the 28th Annual International Conference on Mobile Computing And NetworkingPages 636–647https://doi.org/10.1145/3495243.3560520This paper presents a uGPS (Underground GPS), which is the first SDR (Software Defined Radio)-based GNSS service to commodity GNSS receivers, including the latest iPhone, Android, and Car navigation. The uGPS is a system consisting of SDRs for GNSS ...
- demonstrationOctober 2022
DIY-IPS: towards an off-the-shelf accurate indoor positioning system
MobiCom '22: Proceedings of the 28th Annual International Conference on Mobile Computing And NetworkingPages 778–780https://doi.org/10.1145/3495243.3558752We present DIY-IPS - Do It Yourself - Indoor Positioning System, an open-source real-time indoor positioning mobile application. DIY-IPS detects users' indoor position by employing dual-band RSSI fingerprinting of available WiFi access points. The app ...
- posterOctober 2022
Anchor-few: an adaptive precise indoor positioning system for low anchor densities based on IoT localization
MobiCom '22: Proceedings of the 28th Annual International Conference on Mobile Computing And NetworkingPages 835–837https://doi.org/10.1145/3495243.3558254This paper designs and implements an adaptive precise indoor positioning system, called Anchor-Few, for low anchor densities through Internet of Things (IoT) localization. Anchor Few exploits the IoT localization device, iBeacon, to provide accurate ...
- research-articleMarch 2022
How do Teachers Use Open Learning Spaces? Mapping from Teachers’ Socio-spatial Data to Spatial Pedagogy
LAK22: LAK22: 12th International Learning Analytics and Knowledge ConferencePages 87–97https://doi.org/10.1145/3506860.3506872Teacher’s in-class positioning and interaction patterns (termed spatial pedagogy) are an essential part of their classroom management and orchestration strategies that can substantially impact students’ learning. Yet, effective management of teachers’ ...
- research-articleMarch 2022
- research-articleJanuary 2022
A novel indoor positioning algorithm based on UWB
International Journal of Sensor Networks (IJSNET), Volume 40, Issue 4Pages 238–249https://doi.org/10.1504/ijsnet.2022.127843The positioning method based on ultra-wideband (UWB) technology has been widely used in real life. In order to improve the indoor positioning accuracy of UWB, a new indoor positioning algorithm is proposed. Firstly, in the aspect of non-iterative method, ...
- research-articleDecember 2021
Applications across Co-located Devices: User Interface Distribution, State Management and Collaboration
iiWAS2021: The 23rd International Conference on Information Integration and Web IntelligencePages 602–613https://doi.org/10.1145/3487664.3487748We live surrounded by computing devices, but we are not yet combining them into a natural unified user experience. Therefore, we have designed and implemented a framework to generalize and support the development of multi-device applications, which ...