Autor según el artículo: Lazaro A; Lazaro M; Villarino R

Departamento: Enginyeria Electrònica, Elèctrica i Automàtica

e-ISSN: 2169-3536

Autor/es de la URV: Lázaro Guillén, Antonio Ramon / Villarino Villarino, Ramón Maria

Palabras clave: 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

Resumen: 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).

Áreas temáticas: 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

Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/

Direcció de correo del autor: ramon.villarino@urv.cat antonioramon.lazaro@urv.cat

Identificador del autor: 0000-0001-9692-8943 0000-0003-3160-5777

Fecha de alta del registro: 2023-02-19

Versión del articulo depositado: info:eu-repo/semantics/publishedVersion

Enlace a la fuente original: https://ieeexplore.ieee.org/document/9328764

URL Documento de licencia: http://repositori.urv.cat/ca/proteccio-de-dades/

Referencia al articulo segun fuente origial: Ieee Access. 9 16004-16018

Referencia de l'ítem segons les normes 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

DOI del artículo: 10.1109/ACCESS.2021.3053144

Entidad: Universitat Rovira i Virgili

Año de publicación de la revista: 2021

Tipo de publicación: Journal Publications