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

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...

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Bibliographic Details
Published in:Proceedings of IEEE Sensors 2002, Vol.2, p.1343-1346 vol.2
Main Authors: Chan, K.W., Zhang, Y.T.
Format: Article
Language:English
Subjects:
Adaptive filters
Convergence
Fingers
Least squares approximation
Light emitting diodes
Motion detection
Optoelectronic and photonic sensors
Phototransistors
Probes
Transversal filters
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Summary: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.
DOI:10.1109/ICSENS.2002.1037314