Publication:
A 3D ray launching time-frequency channel modeling approach for UWB ranging applications

Date

2020

Director

Publisher

IEEE
Acceso abierto / Sarbide irekia
Artículo / Artikulua
Versión publicada / Argitaratu den bertsioa

Project identifier

Abstract

Ultrawideband (UWB) has the ability to achieve decimetre level of ranging accuracy, hence, its wider usage nowadays in the field of positioning. In spite of the attractiveness of UWB, its performance is strongly dependent on the propagation channel. In this paper, an analysis of the the UWB channel for ranging applications using an inhouse developed 3D Ray launching (3D RL) algorithm is presented. A parametric study has been performed considering variations of cuboid size resolution of the simulation mesh, in order to analyze convergence impact on estimation accuracy, focusing on Radio frequency (RF) power levels as well as time domain characterization. The RF power results have been used to model the path-loss, small scale fading, and the power delay profile so as to obtain the statistics of the multipath channel as well as time of flight (TOF) estimation values. The results show that the 3D RL is a valuable tool to test UWB systems for ranging applications with a mean accuracy of up to 10 cm in multipath conditions considering complex scatterer distributions within the complete volume of the scenarios under test.

Description

Keywords

Ultrawideband, 3D ray launching, Time of flight, Ranging, Channel modelling, Radio frequency power levels

Department

Ingeniaritza Elektrikoa, Elektronikoaren eta Telekomunikazio Ingeniaritzaren / Institute of Smart Cities - ISC / Ingeniería Eléctrica, Electrónica y de Comunicación

Faculty/School

Degree

Doctorate program

item.page.cita

T. Otim, P. Lopez-Iturri, L. Azpilicueta, A. Bahillo, L. E. Díez and F. Falcone, 'A 3D Ray Launching Time-Frequency Channel Modeling Approach for UWB Ranging Applications,' in IEEE Access, vol. 8, pp. 97321-97334, 2020, doi: 10.1109/ACCESS.2020.2996408.

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