Identification of polyperiodic nonlinear systems

  title={Identification of polyperiodic nonlinear systems},
  author={William A. Gardner and Luigi Paura},
  journal={Signal Processing},
A method for identifying the Fourier-Volterra kernels of polyperiodic nonlinear systems by crosscorrelating the system output with prescribed nonlinear transformations of a prescribed random input is introduced. A frequency-domain counterpart of this method, which can utilize a computationally efficient FFT algorithm to compute cross-spectra of the system output and prescribed nonlinear transformations of the input, is also introduced. With complex inputs, the methods apply to infinite-order… CONTINUE READING

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