Author, as appears in the article.: Lazaro A; Lazaro M; Villarino R
Department: Enginyeria Electrònica, Elèctrica i Automàtica
e-ISSN: 2169-3536
URV's Author/s: Lázaro Guillén, Antonio Ramon / Villarino Villarino, Ramón Maria
Keywords: Zero-power sensor Wireless sensor networks Wireless fidelity Rfid Receivers Received signal strength indicator Modulation Microcontrollers Lora Location awareness Localization Internet of things (iot) Backscatter communications Backscatter
Abstract: CCBY The aim of this paper is to propose a novel room-level localization approach to locate LoRa backscatter devices, which can be easily embedded into wearable devices or smartphones. The advantages of this system lie in its series of low-cost, low-power, low-complexity and long-range features. LoRa backscattering operates by alternatively connecting an antenna, through a switch, to two loads with high reflection coefficients and opposite phase. The result is a frequency shift of the LoRa incident signal equal to the backscatter switching frequency. The localization system comprises several LoRa receivers distributed among the rooms, a LoRa transmitter located at a central point and the backscatter device, which is carried or worn by a subject. The position of the LoRa backscatter device can be determined by comparing the received signal strength between all receivers. In order to improve the accuracy of the system, different machine learning classifiers were compared. System performance was tested in a real-life scenario, achieving an accuracy up to 89.7% using linear discriminant analysis (LDA).
Thematic Areas: Telecommunications Materials science (miscellaneous) Materials science (all) General materials science General engineering General computer science Engineering, electrical & electronic Engineering (miscellaneous) Engineering (all) Engenharias iv Engenharias iii Electrical and electronic engineering Computer science, information systems Computer science (miscellaneous) Computer science (all) Ciência da computação
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: antonioramon.lazaro@urv.cat ramon.villarino@urv.cat
Author identifier: 0000-0003-3160-5777 0000-0001-9692-8943
Record's date: 2024-07-27
Papper version: info:eu-repo/semantics/publishedVersion
Link to the original source: https://ieeexplore.ieee.org/document/9328764
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Ieee Access. 9 16004-16018
APA: Lazaro A; Lazaro M; Villarino R (2021). Room-level localization system based on LoRa backscatters. Ieee Access, 9(), 16004-16018. DOI: 10.1109/ACCESS.2021.3053144
Article's DOI: 10.1109/ACCESS.2021.3053144
Entity: Universitat Rovira i Virgili
Journal publication year: 2021
Publication Type: Journal Publications