<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Collaborative Smartphone-Based User Positioning in a Multiple-User Context Using Wireless Technologies"^^ . "For the localization of multiple users, Bluetooth data from the smartphone is able to \r\ncomplement Wi‐Fi‐based methods with additional information, by providing an approximation of \r\nthe relative distances between users. In practice, both positions provided by Wi‐Fi data and relative \r\ndistance provided by Bluetooth data are subject to a certain degree of noise due to the uncertainty \r\nof radio propagation in complex indoor environments. In this study, we propose and evaluate two \r\napproaches, namely Non‐temporal and Temporal ones, of collaborative positioning to combine \r\nthese two cohabiting technologies to improve the tracking performance. In the Non‐temporal \r\napproach, our model establishes an error observation function in a specific interval of the Bluetooth \r\nand Wi‐Fi output. It is then able to reduce the positioning error by looking for ways to minimize the \r\nerror function. The Temporal approach employs an extended error model that takes into account \r\nthe time component between users’ movements. For performance evaluation, several multi‐user \r\nscenarios in an indoor environment are set up. Results show that for certain scenarios, the proposed \r\napproaches attain over 40% of improvement in terms of average accuracy"^^ . "2020-01-10" . . . "20" . "2" . . "MDPI"^^ . . . "Sensors"^^ . . . "14248220" . . . . . . . . . . . . . . . . "Trung Kien"^^ . "Dao"^^ . "Trung Kien Dao"^^ . . "Dominique"^^ . "Vaufreydaz"^^ . "Dominique Vaufreydaz"^^ . . "Eric"^^ . "Castelli"^^ . "Eric Castelli"^^ . . "Viet Cuong"^^ . "Ta"^^ . "Viet Cuong Ta"^^ . . . . . . "Collaborative Smartphone-Based User Positioning in a Multiple-User Context Using Wireless Technologies (PDF)"^^ . . . "sensors-20-00405.pdf"^^ . . . "Collaborative Smartphone-Based User Positioning in a Multiple-User Context Using Wireless Technologies (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "Collaborative Smartphone-Based User Positioning in a Multiple-User Context Using Wireless Technologies (Other)"^^ . . . . . . "medium.jpg"^^ . . . "Collaborative Smartphone-Based User Positioning in a Multiple-User Context Using Wireless Technologies (Other)"^^ . . . . . . "small.jpg"^^ . . . "Collaborative Smartphone-Based User Positioning in a Multiple-User Context Using Wireless Technologies (Other)"^^ . . . . . . "indexcodes.txt"^^ . . "HTML Summary of #3923 \n\nCollaborative Smartphone-Based User Positioning in a Multiple-User Context Using Wireless Technologies\n\n" . "text/html" . . . "Information Technology (IT)"@en . . . "ISI-indexed journals"@en . .