Statistical characterization and mitigation of NLOS errors in UWB localization systems

Author

Montorsi, Francesco ; Pancaldi, Fabrizio ; Vitetta, Giorgio M.

Author_Institution

Dept. of Inf. Eng., Univ. of Modena & Reggio Emilia, Modena, Italy

fYear

2011

fDate

14-16 Sept. 2011

Firstpage

86

Lastpage

90

Abstract

In this paper some new experimental results about the statistical characterization of the non-line-of-sight (NLOS) bias affecting time-of-arrival (TOA) estimation in ultrawideband (UWB) wireless localization systems are illustrated. Then, these results are exploited to assess the performance of various maximum-likelihood (ML) based algorithms for joint TOA localization and NLOS bias mitigation. Our numerical results evidence that the accuracy of all the considered algorithms is appreciably influenced by the LOS/NLOS conditions of the propagation environment.

Keywords

maximum likelihood estimation; time-of-arrival estimation; ultra wideband communication; NLOS bias mitigation; NLOS error; UWB localization system; joint TOA localization; maximum-likelihood based algorithm; nonline-of-sight bias; statistical characterization; statistical mitigation; time-of-arrival estimation; ultrawideband wireless localization system; Accuracy; Argon; Radio access networks; Bias mitigation; Radiolocalization; Ultra Wide Band (UWB);

fLanguage

English

Publisher

ieee

Conference_Titel

Ultra-Wideband (ICUWB), 2011 IEEE International Conference on

Conference_Location

Bologna

ISSN

2162-6588

Print_ISBN

978-1-4577-1763-5

Electronic_ISBN

2162-6588

Type

conf

DOI

10.1109/ICUWB.2011.6058928

Filename

6058928