Comparison of Pulse Active (PA) Modulation Signal for Electrocardiogram (ECG) Authentication

Abstract

This paper compares the authentication performance between three topological structures of the Pulse Active (PA) technique as applied to Electrocardiogram (ECG) biometrics. PA is a feature extraction method derived from the concept of Pulse Width Modulation (PWM). PA decomposes an ECG signal into a series of output pulses based on the linear dependency constant setting between the ECG and the modulated signal. In this work, three types of periodic signals namely triangular, sinusoidal and cosine waves are assigned as the modulation signal of the PA topology. The authentication performance of these periodic signals to generate output pulses and feature vector are analysed and compared. In this work, PA topology using a triangular function as the modulation signal outperforms the use of sinusoidal and cosine waves in PA-ECG based authentication system.