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A diffusion-based distributed EM algorithm for density estimation in wireless sensor networks

Author
Silva, S.; López, R.; Pagès-Zamora, A.
Type of activity
Presentation of work at congresses
Name of edition
38th IEEE International Conference on Acoustics, Speech, and Signal Processing Acrònim
Date of publication
2013
Presentation's date
2013-05-29
Book of congress proceedings
2013 IEEE International Conference on Acoustics, Speech, and Signal Processing: proceedings: May 26-31, 2013: Vancouver Convention Center: Vancouver, British Columbia, Canada
First page
4449
Last page
4453
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
DOI
https://doi.org/10.1109/LSP.2013.2260329 Open in new window
Repository
http://hdl.handle.net/2117/26818 Open in new window
URL
http://ieeexplore.ieee.org/xpl/login.jsp?tp=&arnumber=6509420&url=http%3A%2F%2Fieeexplore.ieee.org%2Fxpls%2Fabs_all.jsp%3Farnumber%3D6509420 Open in new window
Abstract
We address the problem of distributed estimation of a parameter from a set of noisy observations collected by a sensor network, assuming that some sensors may be subject to data failures and report only noise. In such scenario, simple schemes such as the Best Linear Unbiased Estimator result in an error floor in moderate and high signal-to-noise ratio (SNR), whereas previously proposed methods based on hard decisions on data failure events degrade as the SNR decreases. Aiming at optimal performa...
Citation
Silva, S.; López, R.; Pages, A. A diffusion-based distributed EM algorithm for density estimation in wireless sensor networks. A: IEEE International Conference on Acoustics, Speech, and Signal Processing. "2013 IEEE International Conference on Acoustics, Speech, and Signal Processing: proceedings: May 26-31, 2013: Vancouver Convention Center: Vancouver, British Columbia, Canada". Vancouver: Institute of Electrical and Electronics Engineers (IEEE), 2013, p. 4449-4453.
Keywords
Consensus averaging, Diffusion strategies, Distributed estimation, Expectation-maximization, Maximum-likelihood, Sensor networks, Soft detection
Group of research
SPCOM - Signal Processing and Communications Group

Participants

  • Silva Pereira, Silvana  (author and speaker )
  • López Valcarce, Roberto  (author and speaker )
  • Pages Zamora, Alba Maria  (author and speaker )