Improvement in LMS Based Adaptive Reduction of PPG Motion Artifact

Photoplethysmograph (PPG) signal is degraded drastically by motion artifact caused during dynamic recordings. In this paper, a study on using a special type of LMS adaptive filtering is presented that models both Artillery Blood Pressure (ABP) and additive motion artifact, unwanted signal, to extract clean ABP waveform. Simulation results show that the proposed method enhances the performance of the already used, variable step LMS method.

Keywords:

Motion artifact , Adaptive filter , LMS , PPG , Photoplethysmography