title: Applicability of adaptive noise cancellation to fetal heart rate detection using photoplethysmography.
abstract: In this paper, an approach based on adaptive noise cancellation (ANC) is evaluated for extraction of the fetal heart rate using photoplethysmographic signals from the maternal abdomen. A simple optical model is proposed in which the maternal and fetal blood pulsations result in emulated signals where the lower SNR limit (fetal to maternal) is -25dB. It is shown that a recursive least-squares algorithm is capable of extracting the peaks of the fetal PPG from these signals, for typical values of maternal and fetal tissues.
authors: Department of Electrical Engineering, Sharif University of Technology, 11365-9363, Tehran, Iran. zahedi@sharif.edu
authors: Edmond
authors: E
authors: Zahedi
authors: Gan Kok
authors: GK
authors: Beng
mesh_terms: D000465:Algorithms; D003201:Computers; D005260:Female; D005318:Fetal Heart / Q000502:physiology*; D006340:Heart Rate, Fetal; D006801:Humans; D008954:Models, Biological; D017156:Photoplethysmography / Q000379:methods*; D011247:Pregnancy; D012815:Signal Processing, Computer-Assisted