@misc{10481/96106,
year = {2024},
month = {3},
url = {https://hdl.handle.net/10481/96106},
abstract = {In this paper, we present an analytical framework
for the joint characterization of the 3D direction of arrival (DoA),
i.e., azimuth and elevation components, and time of arrival (ToA)
in multipath environments. The analytical framework is based on
the use of nearly frequency-invariant beamformers (FIB) formed
by toric arrays. The frequency response of the toric array is
expanded as a series of phase modes, which leads to azimuth–time
and elevation–time diagrams from which the 3D DoA and the ToA
of the incoming waves can be extracted over a wide bandwidth.
Firstly, we discuss some practical considerations, advantages
and limitations of using the analytical method. Subsequently,
we perform a parametric study to analyze the influence of the
method parameters on the quality of the estimation. The method
is tested in single-path and multipath mm-wave environments
over a large bandwidth. The results show that the proposed
method improves the quality of the estimation, i.e., decreases
the level of the artifacts, compared to other state-of-art FIB
approaches based on the use of single/concentric circular and
elliptical arrays.},
organization = {MCIN/AEI/10.13039/501100011033 under Grant PID2020-112545RB-C54,
Grant PDC2022-133900-I00, Grant PDC2023-145862-I00, Grant TED2021-129938B-I00, and Grant TED2021-131699B-I00},
organization = {European
Union NextGenerationEU/PRTR},
organization = {Universidad de Granada under
Grant PPJIB2022-05},
organization = {Pre-Doctoral Grant FPU19/01251
and Grant FPU19/04085},
publisher = {Institute of Electrical and Electronics Engineers (IEEE)},
keywords = {Direction-of-arrival (DoA)},
keywords = {Time-of-arrival (ToA)},
keywords = {3D characterization},
title = {Joint Ultra-Wideband Characterization of Azimuth, Elevation, and Time of Arrival With Toric Arrays},
doi = {10.1109/TWC.2024.3377539},
author = {Ramírez Arroyo, Alejandro and Alex Amor, Antonio and Medina Sabino, Rubén and Padilla De La Torre, Pablo and Valenzuela Valdes, Juan Francisco},
}