Real-Time Robust Heart Rate Estimation From Wrist-Type PPG Signals Using Multiple Reference Adaptive Noise Cancellation

Wrist-type photoplethysmographic (PPG) signals subject to severe motion artifacts

MURAD algorithm (multiple reference adaptive noise cancellation using four reference noise signals including three-axis accelerometer data and difference signal between two PPG signals)

State-of-the-art heart rate estimation methods

Average absolute error of heart rate estimationsurrogate