Research Article
An integrated, low power localization system for sensor networks
@INPROCEEDINGS{10.1109/MOBIQ.2004.1331707, author={ T.C. Karalar and S. Yamashita and M. Sheets and J. Rabaey}, title={An integrated, low power localization system for sensor networks}, proceedings={1st International ICST Conference on Mobile and Ubiquitous Systems}, publisher={IEEE}, proceedings_a={MOBIQUITOUS}, year={2004}, month={9}, keywords={}, doi={10.1109/MOBIQ.2004.1331707} }- T.C. Karalar
S. Yamashita
M. Sheets
J. Rabaey
Year: 2004
An integrated, low power localization system for sensor networks
MOBIQUITOUS
IEEE
DOI: 10.1109/MOBIQ.2004.1331707
Abstract
Localization (a.k.a. locationing) is a central concern for ubiquitous self-configuring sensor networks. In this paper the implementation of a distributed, least-squares-based localization algorithm is presented. Low power and energy dissipation are key requirements for sensor networks. As part of the sensor network, the localization system must also conform to these requirements. An ultra-low-power and dedicated hardware implementation of the localization system is therefore presented. The cost of fixed-point implementation is also investigated. The design is implemented in a 0.13 μ CMOS process. It dissipates 1.7 mW of active power and 0.122 J/op of active energy with a silicon area of 0.55 mm2. The mean calculated location error due to fixed-point implementation is shown to be 6%.
