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Prabaharan Poornachandran
Amrita Vishwa Vidyapeetham
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Journal : International Journal of Electrical and Computer Engineering

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Modified Variational Mode Decomposition for Power Line Interference Removal in ECG Signals Neethu Mohan; Sachin Kumar S; Prabaharan Poornachandran; Soman K.P
International Journal of Electrical and Computer Engineering (IJECE) Vol 6, No 1: February 2016
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (308.254 KB) | DOI: 10.11591/ijece.v6i1.pp151-159

Abstract

Power line interferences (PLI) occurring at 50/60 Hz can corrupt the biomedical recordings like ECG signals and which leads to an improper diagnosis of disease conditions. Proper interference cancellation techniques are therefore required for the removal of these power line disturbances from biomedical recordings. The non-linear time varying characteristics of biomedical signals make the interference removal a difficult task without compromising the actual signal characteristics. In this paper, a modified variational mode decomposition based approach is proposed for PLI removal from the ECG signals. In this approach, the central frequency of an intrinsic mode function is fixed corresponding to the normalized power line disturbance frequency. The experimental results show that the PLI interference is exactly captured both in magnitude and phase and are removed. The proposed approach is experimented with ECG signal records from MIT-BIH Arrhythmia database and compared with traditional notch filtering.
Co-Authors Neethu Mohan Sachin Kumar S Soman K.P