| Title | Distributed TLS Estimation under Random Data Faults |
| Publication Type | Conference Paper |
| Year of Publication | 2015 |
| Authors | Pereira, SSilva, Pagès-Zamora, A, López-Valcarce, R |
| Conference Name | IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP) |
| Date Published | 04/2015 |
| Publisher | IEEE |
| Conference Location | Brisbane, Australia |
| Keywords | compass, wsn |
| Abstract | This paper addresses the problem of distributed estimation of a parameter vector in the presence of noisy input and output data as well as data faults, performed by a wireless sensor network in which only local interactions among the nodes are allowed. In the presence of unreliable observations, standard estimators become biased and perform poorly in low signal-to-noise ratios. We propose two different distributed approaches based on the Expectation-Maximization algorithm: in the first one the regressors are estimated at each iteration,whereas the second one does not require explicit regressor estimation. Numerical results show that the proposed methods approach the performance of a clairvoyant scheme with knowledge of the random data faults. |
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