A Simple Algorithm for Fetal Heartrate Estimation

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This paper proposes a simple parameter estimation method applicable to the fetal heartrate estimation. The estimation of the fetal heartrate is not easy since we can observe a composite of the fetal ECG waveform and a maternal ECG waveform. Since these two ECG waveforms overlap on the frequency axis, it is not possible to separate them for the heartrate estimation. The proposed method achieves very high resolution in the separation of multiple highly-correlated signals of which their periods are different. The behavior of the proposed method is investigated through some numerical results.

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