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Amplitude Index for the Quality Assessment of Pulsatile Signals in Noise

  • Wenxuan Dai
  • Xiaorong Ding
  • Yali Zheng
  • Yuan-Ting Zhang
Conference paper
Part of the IFMBE Proceedings book series (IFMBE, volume 42)

Abstract

The aim of this work is to measure the quality of pulsatile signals in noise, primarily physiological signals, focusing on the photoplethysmogram, recorded from body sensor networks and wearable devices. Mathematical model with computational simulation is presented in this process. First, a formula for SNR is deduced and an amplitude index is proposed. Then the interaction of physiological parameters, such as heart rate, with noise in determining the SNR is discussed theoretically and verified by simulation experiment. At last, the corresponding methods to improve the signal quality are suggested. The results of this study can be applied to any physiological pulse train.

Keywords

pulsatile signal photoplethysmogram signal quality SNR 

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Wenxuan Dai
    • 1
  • Xiaorong Ding
    • 1
  • Yali Zheng
    • 1
  • Yuan-Ting Zhang
    • 1
    • 2
  1. 1.Joint Research Centre for Biomedical Engineering, Department of Electronic EngineeringThe Chinese University of Hong KongHong Kong SARChina
  2. 2.Key Laboratory for Health Informatics of the Chinese Academy of Sciences (HICAS) at SIATShenzhenChina

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