Accurate positioning in ultra-wideband systems

Author

Soganci, Hamza ; Gezici, Sinan ; Poor, H. Vincent

Author_Institution

Bilkent Univ., Ankara, Turkey

Volume

18

Issue

2

fYear

2011

fDate

4/1/2011 12:00:00 AM

Firstpage

19

Lastpage

27

Abstract

Accurate positioning systems can be realized via ultra-wideband signals due to their high time resolution. In this article, position estimation is studied for UWB systems. After a brief introduction to UWB signals and their positioning applications, two-step positioning systems are investigated from a UWB perspective. It is observed that time-based positioning is well suited for UWB systems. Then time-based UWB ranging is studied in detail, and the main challenges, theoretical limits, and range estimation algorithms are presented. Performance of some practical time-based ranging algorithms is investigated and compared against the maximum likelihood estimator and the theoretical limits. The trade-off between complexity and accuracy is observed.

Keywords

direction-of-arrival estimation; time-of-arrival estimation; ultra wideband communication; angle of arrival; position estimation; range estimation algorithm; time of arrival; time-based positioning; time-based ranging algorithm; ultrawideband system positioning; Accuracy; Position measurement; Ultra wideband communication;

fLanguage

English

Journal_Title

Wireless Communications, IEEE

Publisher

ieee

ISSN

1536-1284

Type

jour

DOI

10.1109/MWC.2011.5751292

Filename

5751292