Adaptive reduction of motion artifact from photoplethysmographic recordings using a variable step-size LMS filter

Author

Chan, K.W. ; Zhang, Y.T.

Author_Institution

Dept. of Electron. Eng., Chinese Univ. of Hong Kong, Shatin, China

Volume

2

fYear

2002

fDate

2002

Firstpage

1343

Abstract

Photoplethysmography (PPG) is widely used for the continuous monitoring of peripheral circulation. However, the quality of the PPG signal is degraded drastically by motion artifact caused during dynamic recordings. In this paper, a LMS filter with automatic step-size control is proposed to mitigate the effects of motion artifact in PPG recordings for long-term patient monitoring. Experimental results show that the proposed variable step-size LMS filter can provide better performance than the LMS filter with fixed step-size.

Keywords

adaptive filters; adaptive signal processing; bio-optics; cardiovascular system; least mean squares methods; optical information processing; patient monitoring; plethysmography; LED; automatic step-size control; cardiovascular parameters; continuous monitoring; dynamic recordings; fixed step-size; long-term patient monitoring; motion artifact adaptive reduction; peripheral circulation; photoplethysmographic recordings; phototransistor; variable step-size LMS filter; Adaptive filters; Convergence; Fingers; Least squares approximation; Light emitting diodes; Motion detection; Optoelectronic and photonic sensors; Phototransistors; Probes; Transversal filters;

fLanguage

English

Publisher

ieee

Conference_Titel

Sensors, 2002. Proceedings of IEEE

Print_ISBN

0-7803-7454-1

Type

conf

DOI

10.1109/ICSENS.2002.1037314

Filename

1037314