The statistics of wavelet-based bicoherence
作者： Jaehak Chung , E.J. Powers
关键词: Degrees of freedom (statistics) 、 Bicoherence 、 Coherence (signal processing) 、 Harmonic wavelet transform 、 Fourier transform 、 Statistics 、 Mathematics 、 Gaussian 、 Wavelet transform 、 Wavelet
摘要: The ability of classical Fourier- and wavelet-based bicoherence to detect phase coupling associated with short-time quadratic nonlinear interactions is compared. different performance each arises from statistics. Since the has a larger number effective degrees freedom (dof) than that Fourier based bicoherence, its significant level zero-bicoherence smaller value. statistics zero-level represented empirically for zero-mean Gaussian random input.
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