Abstract

A new method to extract fetal electrocardiogram (FECG) signal from the mixed ECG signals is presented by introducing time-correlation to traditional independent component analysis (ICA). FECG signal extraction is a hot research topic because the FECG signal reflects the heart situation of the fetus and provides the basis of early diagnosis. In this paper, an objective function based on time-correlation and non-Gaussianity described in ICA is proposed. Maximizing the objective function, we present a fixed-point blind source extraction (BSE) algorithm. Simulation experiments of some typical data indicate the availability of the proposed algorithm. What's more, the proposed algorithm owns better performance than the comparison algorithms.

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