RT Journal Article
ID 4508c1162498ebb6
A1 Viunytskyi, O. G.
A1 Shulgin, V. I. 
A1 Totsky, A. V.
A1 Egiazarian, Karen O.
A1 Polotska, O. A. 
T1 EXTRACTION OF FETAL HEART ACTIVITY BY USING BISPECTRUM-BASED ELECTROMYOGRAPHY SIGNAL PROCESSING
JF Telecommunications and Radio Engineering
JO TRE
YR 2019
FD 2019-03-07
VO 78
IS 3
SP 269
OP 279
K1 fetal heart activity
K1 fetal ECG
K1 abdominal electromyography signal
K1 third-order spectrum
K1 bispectrum
K1 phase coupling
K1 bimagnitude estimate
K1 QRS complex
AB This paper proposes the use of third-order spectrum named bispectrum that can be applied to biomedical diagnostics as a useful tool for detection of fetal heart activity. Fetal heart activity detection, recognition and analysis are proposed by extraction of informative features contained in bispectrum estimates computed for the electromyography signals measured on the abdominal surface of pregnant woman. Experimental investigations have been performed by using the recorded and accumulated abdominal electromyography signals. Contributions extracted in bispectral domain by computation of bimagnitude estimates demonstrate detection of novel class of information features indicating the phase coupling relationships between the frequencies contained in the abdominal electromyography signals. This phase coupling content can serve as discriminative feature for extraction fetal heart activity contribution in the intricate interference environment. Obtained results demonstrate effective interference suppression provided by using bispectrum-based signal processing. 
PB Begell House
LK https://www.dl.begellhouse.com/journals/0632a9d54950b268,793c77ac14010f19,4508c1162498ebb6.html