Assessment of Direct Positioning for IR-UWB in IEEE 802.15.4a channels

Author

Navarro, Monica ; Closas, Pau ; Najar, Montse

Author_Institution

Centre Tecnol. de Telecomunicacions de Catalunya, Barcelona, Spain

fYear

2013

fDate

15-18 Sept. 2013

Firstpage

55

Lastpage

60

Abstract

This paper assesses the problem of localization in IR-UWB under realistic channel models for Direct Position Estimation (DPE) approaches. DPE schemes have been proposed for positioning and localization for well developed systems like GNSS, where it has been analytically proved that the Maximum-likelihood single-step estimator outperforms two-step procedures. The extension to wideband systems and less favorable scenarios like indoor UWB channels is less explored. We derive a DPE algorithm and analyze its performance against two-step TOA based localization for an IR-UWB system. Numerical results are provided for IEEE 802.15.4a channel model showing positioning performance of the two approaches and highlighting the tradeoffs.

Keywords

Zigbee; maximum likelihood estimation; satellite navigation; time-of-arrival estimation; ultra wideband communication; DPE; GNSS; IEEE 802.15.4a channel model; IR-UWB; TOA based localization; direct position estimation; indoor UWB channels; maximum likelihood single-step estimator; time-of-arrival estimation; Channel models; Delays; Distance measurement; Estimation; IEEE 802.15 Standards; Signal to noise ratio; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultra-Wideband (ICUWB), 2013 IEEE International Conference on

Conference_Location

Sydney, NSW

ISSN

2162-6588

Type

conf

DOI

10.1109/ICUWB.2013.6663822

Filename

6663822