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Noise Reduction of PPG Signal During Free Movements Using Adaptive SFLC(Scaled Fourier Linear Combiner)  

Kim, Sung-Min (건국대학교 의학공학부)
Cha, Eun-Jong (충북대학교 의과대학 의공학교실)
Kim, Deok-Won (연세의대 의학공학교실)
Yoo, Jae-Ha (한양대학교 전자공학과)
Kim, Dong-Yon (한양대학교 전자공학과)
Kim, Soo-Chan (한경대학교 생물환경.정보통신전문대학)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers D / v.55, no.3, 2006 , pp. 138-141 More about this Journal
Abstract
Blood flow is one of vital signals related to human physiological information. Photoplethysmograph (PPG) has been used to measure indirectly heart rate, blood oxygen saturation ($SpO_2$), and so on. Because PPG signal is weak and sensitive to motion artifacts, it is very important to continuously obtain stable PPG signal during free movement. In this study, we applied the scaled Fourier linear combiner (SFLC) using both the adaptive filter and FLC to remove effectively the motion artifacts as well as background noise in the real time without additional signal correlated with motion from a accelerometer. The proposed method would be useful to reduce the movement and background noise which are not synchronized with heart rate.
Keywords
Fourier Linear Combiner; Noise Canceller; Photoplethysmograph; Adaptive Filter; Motion Artifact;
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