Pulse Wave Signal Processing Based on the Lifting Scheme

Wavelet transform is used widely in signal processing.But the classical wavelet transform depends on Fourier transform,and its realization is based on a large amount of convolution computation,so the operation speed is low.In the paper the second generation wavelet transform is discussed and used to process pulse wave signal.Lifting scheme is the key technique to construct the second generation wavelet transform.It doesn't depend on Fourier transform and can realize integer transform,which improves the operation speed greatly.The method of the hard threshold and the soft threshold used in wavelet denoising is introduced and the second generation wavelet transform is used to denoise pulse wave signal with different method in the paper.The final result is compared with the result processed by traditional wavelet transform,and the effect is satisfactory.