Joint Direction-of-Arrival and Time-of-Arrival Estimation with Ultra-wideband Elliptical Arrays
Metadatos
Mostrar el registro completo del ítemAutor
Ramírez Arroyo, Alejandro; Alex Amor, Antonio; Padilla De La Torre, Pablo; Valenzuela Valdes, Juan FranciscoEditorial
Institute of Electrical and Electronics Engineers
Materia
Direction-of-arrival (DoA) Time-of-arrival (ToA) Elliptical arrays
Fecha
2023-04-27Referencia bibliográfica
Published version: A. Ramírez-Arroyo, A. Alex-Amor, P. Padilla and J. F. Valenzuela-Valdés, "Joint Direction-of-Arrival and Time-of-Arrival Estimation With Ultra-Wideband Elliptical Arrays," in IEEE Transactions on Wireless Communications, vol. 22, no. 12, pp. 9187-9200, Dec. 2023, doi: 10.1109/TWC.2023.3268949
Patrocinador
Spanish Government under Project PID2020-112545RB-C54, and Project TED2021-129938B-I00; “Junta de Andaluc´ıa” under Project A-TIC-608-UGR20, Project P18.RT.4830, and Project PYC20-RE-012-UGR; Predoctoral Grant FPU19/01251Resumen
This paper presents a general technique for the joint
Direction-of-Arrival (DoA) and Time-of-Arrival (ToA) estimation
in multipath environments. The proposed ultra-wideband
technique is based on phase-mode expansions and the use of
nearly frequency-invariant elliptical arrays. New possibilities
open with the present approach, as not only elliptical, but also
circular and linear (highly flattened) arrays can be considered
with the same implementation. Systematic selection/rejection of
signals-of-interest/signals-not-of-interest in smart wireless environments
is possible, unlike with previous approaches based
on circular arrays. Concentric elliptical arrays of many sizes
and eccentricities can be jointly considered, with the subsequent
improvement that entails in DoA and ToA detection. This leads
to the realization of pseudo-random array patterns; namely,
quasi-arbitrary geometries created from the superposition of
multiple elliptical arrays. Some simulation and experimental tests
(measurements in an anechoic chamber) are carried out for
several frequency bands to check the correct performance of
the method. The method is proven to give accurate estimations
in all tested scenarios, and to be robust against noise and position
uncertainty in sensor placement.