| Title |
Noise Reduction of PPG Signal During Free Movements Using Adaptive SFLC(Scaled Fourier Linear Combiner) |
| Authors |
김성민(Kim, Sung-Min) ; 차은종(Cha, Eun-Jong) ; 김덕원(Kim, Deok-Won) ; 유재하(Yoo, Jae-Ha) ; 김동연(Kim, Dong-Yon) ; 김수찬(Kim, Soo-Chan) |
| Keywords |
Fourier Linear Combiner ; Noise Canceller ; Photoplethysmograph ; Adaptive Filter ; Motion Artifact |
| 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. |