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Resource optimisation in a wireless sensor network with guaranteed estimator performance
KTH, School of Electrical Engineering (EES), Automatic Control. KTH, School of Electrical Engineering (EES), Centres, ACCESS Linnaeus Centre.ORCID iD: 0000-0001-9940-5929
2010 (English)In: IET CONTR THEORY APPL, ISSN 1751-8644, Vol. 4, no 5, 710-723 p.Article in journal (Refereed) Published
Abstract [en]

New control paradigms are needed for large networks of wireless sensors and actuators in order to efficiently utilise system resources. In this study, the authors consider the problem of discrete-time state estimation over a wireless sensor network. Given a tree that represents the sensor communications with the fusion centre, the authors derive the optimal estimation algorithm at the fusion centre, and provide a closed-form expression for the steady-state error covariance matrix. They then present a tree reconfiguration algorithm that produces a sensor tree that has low overall energy consumption and guarantees a desired level of estimation quality at the fusion centre. The authors further propose a sensor tree construction and scheduling algorithm that leads to a longer network lifetime than the tree reconfiguration algorithm. Examples are provided throughout the paper to demonstrate the algorithms and theory developed.

Place, publisher, year, edition, pages
2010. Vol. 4, no 5, 710-723 p.
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
URN: urn:nbn:se:kth:diva-27273DOI: 10.1049/iet-cta.2009.0104ISI: 000279105600002ScopusID: 2-s2.0-77955200600OAI: diva2:377623
QC 20101214Available from: 2010-12-14 Created: 2010-12-09 Last updated: 2012-01-31Bibliographically approved

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Johansson, Karl Henrik
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