AoA and ToA Accuracy for Antenna Arrays in Dense Multipath Channels

Thomas Wilding; Stefan Josef Grebien; Ulrich Mühlmann; Klaus Witrisal

AoA and ToA Accuracy for Antenna Arrays in Dense Multipath Channels

Thomas Wilding, Stefan Josef Grebien, Ulrich Mühlmann, Klaus Witrisal

Institut für Signalverarbeitung und Sprachkommunikation (4420)

Publikation: Beitrag in Buch/Bericht/Konferenzband › Beitrag in einem Konferenzband › Begutachtung

Abstract

The accuracy that can be achieved in time of arrival (ToA) estimation strongly depends on the utilized signal bandwidth. In an indoor environment multipath propagation usually causes a degradation of the achievable accuracy due to the overlapping signals. A similar effect can be observed for the angle of arrival (AoA) estimation using arrays. This paper derives a closed-form equation for the Cramer-Rao lower bound (CRLB) of the achievable AoA and the ToA error variances, considering the presence of dense multipath. The Fisher information expressions for both parameters allows an evaluation of the influence of channel parameters and system parameters such as the array geometry. Our results demonstrate that the AoA estimation accuracy is strongly related to the signal bandwidth, due to the multipath influence. The theoretical results are evaluated with experimental data.

Originalsprache	englisch
Titel	2018 8th International Conference on Localization and GNSS (ICL-GNSS)
Herausgeber (Verlag)	Institute of Electrical and Electronics Engineers
Seiten	1-6
Publikationsstatus	Veröffentlicht - 2018

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AoA and ToA Accuracy for Antenna Arrays in Dense Multipath Channels. / Wilding, Thomas; Grebien, Stefan Josef; Mühlmann, Ulrich et al.
2018 8th International Conference on Localization and GNSS (ICL-GNSS). Institute of Electrical and Electronics Engineers, 2018. S. 1-6.

Publikation: Beitrag in Buch/Bericht/Konferenzband › Beitrag in einem Konferenzband › Begutachtung

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abstract = "The accuracy that can be achieved in time of arrival (ToA) estimation strongly depends on the utilized signal bandwidth. In an indoor environment multipath propagation usually causes a degradation of the achievable accuracy due to the overlapping signals. A similar effect can be observed for the angle of arrival (AoA) estimation using arrays. This paper derives a closed-form equation for the Cramer-Rao lower bound (CRLB) of the achievable AoA and the ToA error variances, considering the presence of dense multipath. The Fisher information expressions for both parameters allows an evaluation of the influence of channel parameters and system parameters such as the array geometry. Our results demonstrate that the AoA estimation accuracy is strongly related to the signal bandwidth, due to the multipath influence. The theoretical results are evaluated with experimental data.",

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AU - Wilding, Thomas

AU - Grebien, Stefan Josef

AU - Mühlmann, Ulrich

AU - Witrisal, Klaus

PY - 2018

Y1 - 2018

N2 - The accuracy that can be achieved in time of arrival (ToA) estimation strongly depends on the utilized signal bandwidth. In an indoor environment multipath propagation usually causes a degradation of the achievable accuracy due to the overlapping signals. A similar effect can be observed for the angle of arrival (AoA) estimation using arrays. This paper derives a closed-form equation for the Cramer-Rao lower bound (CRLB) of the achievable AoA and the ToA error variances, considering the presence of dense multipath. The Fisher information expressions for both parameters allows an evaluation of the influence of channel parameters and system parameters such as the array geometry. Our results demonstrate that the AoA estimation accuracy is strongly related to the signal bandwidth, due to the multipath influence. The theoretical results are evaluated with experimental data.

AB - The accuracy that can be achieved in time of arrival (ToA) estimation strongly depends on the utilized signal bandwidth. In an indoor environment multipath propagation usually causes a degradation of the achievable accuracy due to the overlapping signals. A similar effect can be observed for the angle of arrival (AoA) estimation using arrays. This paper derives a closed-form equation for the Cramer-Rao lower bound (CRLB) of the achievable AoA and the ToA error variances, considering the presence of dense multipath. The Fisher information expressions for both parameters allows an evaluation of the influence of channel parameters and system parameters such as the array geometry. Our results demonstrate that the AoA estimation accuracy is strongly related to the signal bandwidth, due to the multipath influence. The theoretical results are evaluated with experimental data.

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BT - 2018 8th International Conference on Localization and GNSS (ICL-GNSS)

PB - Institute of Electrical and Electronics Engineers

ER -

AoA and ToA Accuracy for Antenna Arrays in Dense Multipath Channels

Abstract

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