"JOURNAL OF RADIO ELECTRONICS" (Zhurnal Radioelektroniki ISSN 1684-1719, N 8, 2019

contents of issue      DOI  10.30898/1684-1719.2019.8.4     full text in Russian (pdf)  

UDC 51-7:537.86

Time frequency analysis of the blood pressure signals using the Hilbert-Huang transform

 

V. D. Ompokov, V. V. Boronoyev

Institute of Physical Materials Science of Sberian Branch of Russian Academy of Sciences, Sakhyanovoy 6, Ulan-Ude 670047, Russia

 

The paper is received on August 1, 2019

 

Abstract. The paper presents a relative new method for the analysis of nonstationary signals that allows a signal's frequency and amplitude to be evaluated with high time resolution. The Hilbert-Huang transform consists of two steps: Empirical mode decomposition and Hilbert transform. The empirical mode decomposition is a signal analysis method that separates multi-component signals into single oscillatory modes called intrinsic mode functions. Mode mixing problem happens during the empirical mode decomposition process. Fourier transform was introduced to remove the mode-mixing effect. Numerical experiments with signals containing closely spaced spectral components are carried out. Mean square error between predefined and decomposed data was used as estimation parameter. The proposed approach allows achieving better decomposition results than the classic empirical mode decomposition. The results of the using of Hilbert-Huang transform as an instrument for digital processing biomedical signals are presented.

Key words: time-frequency analysis, Hilbert-Huang transform, empirical mode decomposition, mode mixing, Fourier transform, arterial blood pressure signal.

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For citation:

V. D. Ompokov, V. V. Boronoyev. Time frequency analysis of the blood pressure signals using the Hilbert-Huang transform.  Zhurnal Radioelektroniki - Journal of Radio Electronics. 2019. No. 8. Available at http://jre.cplire.ru/jre/aug19/4/text.pdf

DOI  10.30898/1684-1719.2019.8.4