Key result
A variable step-size LMS filter provided better performance in mitigating motion artifact from photoplethysmographic recordings compared to an LMS filter with a fixed step-size.
Why the study?
Does a variable step-size LMS filter improve motion artifact reduction in PPG recordings compared to a fixed step-size LMS filter?
Comparison
LMS filter with automatic step-size control vs LMS filter with fixed step-size
Design
Other
Authors
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Variable step-size LMS filters may improve PPG motion artifact mitigation in monitoring; this extends fixed-step methods but remains hypothesis-generating.
Does a variable step-size LMS filter improve motion artifact reduction in PPG recordings compared to a fixed step-size LMS filter?
A variable step-size LMS filter improves the reduction of motion artifacts in PPG recordings compared to fixed step-size filters, potentially enhancing long-term patient monitoring.
Chan et al. (2003) studied Motion artifact in photoplethysmographic (PPG) recordings. Variable step-size LMS filter vs. LMS filter with fixed step-size was evaluated on Performance in mitigating motion artifact. A variable step-size LMS filter provided better performance in mitigating motion artifact from photoplethysmographic recordings compared to an LMS filter with a fixed step-size.
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