A low power localization architecture and system for wireless sensor networks

Tufan C. Karalar, Shunzo Yamashita, Michael Sheets, Jan Rabaey

Research output: Contribution to journalConference articlepeer-review

18 Citations (Scopus)


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 0.13μ CMOS process. It dissipates 1.7mW of active power and 0.122nJ/op of active energy with a silicon area of 0.55mm 2. The mean calculated location error due to fixed-point implementation is shown to be 6%.

Original languageEnglish
Pages (from-to)89-94
Number of pages6
JournalIEEE Workshop on Signal Processing Systems, SiPS: Design and Implementation
Publication statusPublished - 2004
Externally publishedYes
Event2004 IEEE Workshop on Signal Processing Systems Design and Implementation, Proceedings - Austin, TX, United States
Duration: 13 Oct 200415 Oct 2004


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