EMD Based Hierarchical Multiresolution Analysis via DCT with Applications to ECG Denoising and QRS Point Enhancement

This paper proposes to employ the discrete cosine transform (DCT) to perform the empirical mode decomposition (EMD) based hierarchical multiresolution analysis. This can simplify the implementation because all the signals are real valued. In this paper, the intrinsic mode functions (IMFs) in the first level of decomposition are obtained by applying the conventional EMD to an electrocardiogram (ECG). Then, the first IMF is further decomposed....