EURASIP Journal on Applied Signal Processing
Volume 2006 (2006), Article ID 32082, 13 pages
doi:10.1155/ASP/2006/32082
Time of Arrival Estimation for UWB Localizers in Realistic Environments
1Dipartimento di Elettronica e Telecomunicazioni, Universitàdegli studi di Firenze, Via Santa Marta 3, Firenze 50139, Italy
2The WiLAB, IEIIT/CNR, CNIT, Università di Bologna, Via Venezia 52, 47023 Cesena, Italy
3Dipartimento di Elettronica e Telecomunicazioni, CNIT, Università degli studi di Firenze, Via Santa Marta 3, Firenze 50139, Italy
4Laboratory for Information and Decision Systems (LIDS), Massachusetts Institute of Technology, Room 32-D658, 77 Massachusetts Avenue, Cambridge, MA 02139, USA
Received 14 June 2005; Revised 12 December 2005; Accepted 30 April 2006
Copyright © 2006 Hindawi Publishing Corporation. This is an open access article distributed under the
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Abstract
This paper investigates time of arrival (ToA) estimation methods for ultra-wide bandwidth (UWB) propagation signals. Different algorithms are implemented in order to detect the direct path in a dense multipath environment. Different suboptimal, low-complex techniques based on peak detection are used to deal with partial overlap of signal paths. A comparison in terms of ranging accuracy, complexity, and parameters sensitivity to propagation conditions is carried out also considering a conventional technique based on threshold detection. In particular, the algorithms are tested on experimental data collected from a measurement campaign performed in a typical office building.