Real-time ECG Signal Denoising Using the ADTF Algorithm for Embedded Implementation on FPGAs

The heart is a set of muscles “myocardium” that is rhythmically driven to contract and hence drive the circulation of blood throughout the body. This activity is a result of the electrical activity of the heart cells which is graphical recorded and the measured signal is known as an electrocardiogram (ECG). The ECG signal as all signals obtained by an instrumental response, are affected by a noise. Noise degrades the accuracy and precision of the analysis. Denoising the signal is therefore highly desirable if not essential. So, we present in this paper a performing method of ECG denoising based on adaptive dual threshold filter. The method gives satisfying results compared to recently published methods. The FPGA implementation of this algorithm is studied aiming to optimize the hardware resources in terms of memory usage and to satisfy the constraints of real time processing.