A Variational Message Passing Algorithm for Sensor Self-Localization in Wireless Networks

Claus Pedersen, Troels Pedersen, Bernard Henri Fleury

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Abstract

We propose a novel algorithm for sensor selflocalization
in cooperative wireless networks where observations
of relative sensor distances are available. The variational message
passing (VMP) algorithm is used to implement a mean field
solution to the estimation of the posterior probabilities of the
sensor positions in an R^2 scenario. Extension to R^3 is straightforward.
Compared to non-parametric methods based on belief
propagation, the VMP algorithm features significantly lower
communication overhead between sensors. This is supported by
performance simulations which show that the estimated mean
localization error of the algorithm stabilizes after approximately
30 iterations.
OriginalsprogEngelsk
TitelIEEE International Symposium on Information Theory Proceedings (ISIT) 2011
Antal sider5
ForlagIEEE
Publikationsdatoaug. 2011
Sider2158-2162
ISBN (Trykt)978-1-4577-0596-0
ISBN (Elektronisk)978-1-4577-0594-6
StatusUdgivet - aug. 2011
Begivenhed2011 IEEE International Symposium on Information Theory - St. Petersburg, Rusland
Varighed: 31 jul. 20115 aug. 2011

Konference

Konference2011 IEEE International Symposium on Information Theory
Land/OmrådeRusland
BySt. Petersburg
Periode31/07/201105/08/2011

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