A 3-Tier UWB-Based Indoor Localization Scheme for Ultra-Low-Power Sensor Nodes

Author

Li, Zheng ; Dehaene, Wim ; Gielen, Georges

Author_Institution

Dept. Elektrotechniek, Katholieke Univ. Leuven, Leuven

fYear

2007

fDate

24-27 Nov. 2007

Firstpage

995

Lastpage

998

Abstract

In this paper, a hierarchical indoor localization scheme is proposed to enable the use of autonomously powered ultra-low-power tags attached to the objects with unknown position. Using the UWB characteristics and the 3-tier organization (consisting of a large number of cost-effective tags, a small number of cheap and low-power hubs and a few synchronized base stations), the proposed localization scheme can provide a wide geographical coverage and precise positioning. Localization is based on the arrival time of the UWB pulses at the reference nodes with known locations. We formalize the hub placement problem as an optimization problem. Simulations investigate the performance degradation due to the nonideal hub placement and hub localization error.

Keywords

indoor communication; signal processing; ultra wideband communication; wireless sensor networks; 3-tier UWB-based indoor localization scheme; autonomously powered ultra low power tags; hub localization error; hub placement; low power hubs; Base stations; Batteries; Costs; Degradation; Delay estimation; Energy consumption; Logistics; Position measurement; Signal processing; Transmitters; TOA; UWB; indoor localization;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing and Communications, 2007. ICSPC 2007. IEEE International Conference on

Conference_Location

Dubai

Print_ISBN

978-1-4244-1235-8

Electronic_ISBN

978-1-4244-1236-5

Type

conf

DOI

10.1109/ICSPC.2007.4728489

Filename

4728489