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Parameter estimation in wireless sensor networks with faulty transducers: a distributed EM approach

Autor
Silva, S.; López, R.; Pagès-Zamora, A.
Tipus d'activitat
Article en revista
Revista
Signal processing
Data de publicació
2018-03-01
Volum
144
Pàgina inicial
226
Pàgina final
237
DOI
https://doi.org/10.1016/j.sigpro.2017.10.012 Obrir en finestra nova
Projecte finançador
Red COMONSENS
TEC2016-75067-C4-2-R - CARMEN
Técnicas distribuidas para la gestión y operación de redes de comunicaciones celulares inalámbricas, de sensores y de la red eléctrica
Repositori
http://hdl.handle.net/2117/112095 Obrir en finestra nova
URL
https://www.sciencedirect.com/science/article/pii/S0165168417303717 Obrir en finestra nova
Resum
We address the problem of distributed estimation of a vector-valued parameter performed by a wireless sensor network in the presence of noisy observations which may be unreliable due to faulty transducers. The proposed distributed estimator is based on the Expectation-Maximization (EM) algorithm and combines consensus and diffusion techniques: a term for information diffusion is gradually turned off, while a term for updated information averaging is turned on so that all nodes in the network app...
Citació
Silva, S., López, R., Pages, A. Parameter estimation in wireless sensor networks with faulty transducers: a distributed EM approach. "Signal processing", 1 Març 2018, vol. 144, p. 226-237.
Paraules clau
Consensus averaging, Diffusion strategies, Distributed estimation, Expectation-maximization, Maximum-likelihood, Soft detection, Wireless sensor networks.
Grup de recerca
SPCOM - Grup de Recerca de Processament del Senyal i Comunicacions

Participants

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