Improved Lower Bounds on Time-of-Arrival Estimation Error in Realistic UWB Channels

Author

Dardari, Davide ; Chong, Chia Chin ; Win, Moe Z.

Author_Institution

WiLAB, Bologna Univ., Cesena

fYear

2006

fDate

24-27 Sept. 2006

Firstpage

531

Lastpage

537

Abstract

This paper investigates lower bounds on time-of-arrival (ToA) estimation error for ultrawide bandwidth ranging systems operating in realistic multipath environments. Based on the Ziv-Zakai lower bound, we derive a lower bound for the ToA estimation error using both the IEEE 802.15.4a channel models and experimentally measured data. It is shown that for practical signal-to-noise values the classical Cramer-Rao lower bound is too optimistic when operating in dense multipath environments

Keywords

channel estimation; multipath channels; time-of-arrival estimation; ultra wideband communication; IEEE 802.15.4a channel model; ToA estimation error; Ziv-Zakai lower bound; realistic UWB multipath channel; time-of-arrival estimation; ultrawide bandwidth ranging system; Amplitude estimation; Bandwidth; Channel estimation; Delay estimation; Estimation error; Maximum likelihood estimation; Mean square error methods; Pulse shaping methods; Time of arrival estimation; USA Councils; Ranging; UWB; Ziv-Zakai lower bound; time-of-arrival estimation;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultra-Wideband, The 2006 IEEE 2006 International Conference on

Conference_Location

Waltham, MA

Print_ISBN

1-4244-0101-1

Electronic_ISBN

1-4244-0102-X

Type

conf

DOI

10.1109/ICU.2006.281605

Filename

4059500