학술논문
An integrated, low power localization system for sensor networks
Document Type
Conference
Author
Source
The First Annual International Conference on Mobile and Ubiquitous Systems: Networking and Services, 2004. MOBIQUITOUS 2004. Mobile and ubiquitous systems: networking and services Mobile and Ubiquitous Systems: Networking and Services, 2004. MOBIQUITOUS 2004. The First Annual International Conference on. :24-30 2004
Subject
Language
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 /spl mu/ 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 mm/sup 2/. The mean calculated location error due to fixed-point implementation is shown to be 6%.