COMBINATION OF CONVOLUTIVE BLIND SIGNAL SEPARATION AND WAVELET DECOMPOSITION TO EXTRACT THE ATRIAL ACTIVITY IN ATRIAL FIBRILLATION

C. Vayá, J. J. Rieta, R. Alcaraz

Abstract

In order to use the ECG as a tool for the characterization of atrial fibrillation (AF), we need to dissociate atrial activity (AA) from ventricular activity. On the other hand, the reduced number of leads recorded from a Holter system limits the necessary spatial diversity required by Blind Source Separation (BSS) techniques to accurately extract the AA. In this work, we propose a new method, the Convolutive Multiband Blind Separation (CMBS), to solve the problem of reduced number of leads by combining the Wavelet transform with the convolutive BSS algorithm Infomax. Our analysis shows up that CMBS improves the extraction performance of AA from Holter systems in comparison with previous extraction methods. This improvement is accomplished in two different scenarios, one for synthetic signals and another one for real signals. A high accuracy of the estimated AA for synthetic and real AF ECG episodes is reached in both scenarios. In addition, results prove that CMBS preserves the original AA spectral parameters.

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Paper Citation


in Harvard Style

Vayá C., J. Rieta J. and Alcaraz R. (2010). COMBINATION OF CONVOLUTIVE BLIND SIGNAL SEPARATION AND WAVELET DECOMPOSITION TO EXTRACT THE ATRIAL ACTIVITY IN ATRIAL FIBRILLATION . In Proceedings of the Third International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2010) ISBN 978-989-674-018-4, pages 373-376. DOI: 10.5220/0002592003730376


in Bibtex Style

@conference{biosignals10,
author={C. Vayá and J. J. Rieta and R. Alcaraz},
title={COMBINATION OF CONVOLUTIVE BLIND SIGNAL SEPARATION AND WAVELET DECOMPOSITION TO EXTRACT THE ATRIAL ACTIVITY IN ATRIAL FIBRILLATION},
booktitle={Proceedings of the Third International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2010)},
year={2010},
pages={373-376},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0002592003730376},
isbn={978-989-674-018-4},
}


in EndNote Style

TY - CONF
JO - Proceedings of the Third International Conference on Bio-inspired Systems and Signal Processing - Volume 1: BIOSIGNALS, (BIOSTEC 2010)
TI - COMBINATION OF CONVOLUTIVE BLIND SIGNAL SEPARATION AND WAVELET DECOMPOSITION TO EXTRACT THE ATRIAL ACTIVITY IN ATRIAL FIBRILLATION
SN - 978-989-674-018-4
AU - Vayá C.
AU - J. Rieta J.
AU - Alcaraz R.
PY - 2010
SP - 373
EP - 376
DO - 10.5220/0002592003730376