Title: Study of structural complexity of optimal order digital filters for de-noising ECG signal
Authors: Sande Seema Bhogeshwar; M.K. Soni; Dipali Bansal
Addresses: Faculty of Engineering & Technology, Manav Rachna International University, Faridabad, India ' Faculty of Engineering & Technology, Manav Rachna International University, Faridabad, India ' Faculty of Engineering & Technology, Manav Rachna International University, Faridabad, India
Abstract: Selection and implementation of optimal order digital filter for denoising ECG signal on FPGA, based on Signal to Noise Ratio (SNR), error and accuracy using wavelet toolbox is a tedious task. To overcome this problem, an attempt has been made in MATLAB to obtain a noise-free ECG signal based on SNR and mean square error to select optimal order digital filter. An ECG sample from MIT-BIH arrhythmia database is artificially corrupted by adding noise and is filtered through different low-pass IIR and FIR digital filters. The hardware complexity of optimal order digital filters structure is checked in terms of multipliers, adders and delays in MATLAB and their performance is compared based on the number of basic elements and visual inspections. It is found that the elliptic IIR filter and Kaiser window FIR filter require low-filter order for a given specification and hence, requires less number of basic elements.
Keywords: ECG signal; MIT-BIH; SNR; MSE; PSD; FFT.
DOI: 10.1504/IJBET.2019.097301
International Journal of Biomedical Engineering and Technology, 2019 Vol.29 No.2, pp.101 - 133
Received: 21 Jun 2016
Accepted: 04 Oct 2016
Published online: 14 Jan 2019 *