Time of arrival estimation for UWB localizers in realistic environments

  • Authors:

  • Chiara Falsi;Davide Dardari;Lorenzo Mucchi;Moe Z. Win

  • Affiliations:

  • Dipartimento di Elettronica e Telecomunicazioni, Università degli studi di Firenze, Via Santa Marta, Firenze, Italy;The WiLAB, IEIIT/CNR, CNIT, Università di Bologna, Via Venezia, Cesena, Italy;Dipartimento di Elettronica e Telecomunicazioni, CNIT, Università degli studi di Firenze, Via Santa Marta, Firenze, Italy;Laboratory for Information and Decision Systems (LIDS), Massachusetts Institute of Technology, Cambridge, MA

  • Venue:
  • EURASIP Journal on Applied Signal Processing
  • Year:
  • 2006

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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.