Enhancement Separation of ECG Signals for Twin Fetuses Based on Modified Blind Source Separation

Abstract

Electrocardiogram device is used to measure signals that are generated from the heart. It can be classified as a non-surgical device. It is too important to watch fetal heart during gestation because it provides doctor with very useful information to diagnose any defect in fetuses heart before birth. Many techniques are used for isolating fetal ECG from his mother ECG and noise like filters and blind source separation. The main problem is how to extract fetal ECG when a mother has twins. In this case, the isolation between fetuses ECG will be complicated because, both fetus ECG signals will have the same features. In this paper, a combination of blind source separation and band pass filter has been implemented. The obtained results by the suggested method records higher values of SNR than the other blind source separation (BSS), which are “STONE, JADE, and FICA” without using a filter. The effectiveness of the proposed method is checked by the measured signal to noise ratio (SNR) for each signal.