How to perform deconvolution using FFT

Hello everyone

Is there anyone who knows the algorith or can give me a vi that shows how to perform deconvolution of the two functions by using the FFT. Using labview for deconvolution, the suggested algorith is.

  1. Calculate the Fourier transform of the input sequence X * Y.
  2. Calculate the Fourier transform of the input sequence Y.
  3. Divide the Fourier transform of X * Y by the Fourier transform of is. Call the new h sequence.
  4. Calculate the inverse of Fourier of h to get the deconvolved Xsequence.

I tried to do e same but did not work. I enclose a Vi in first, I bypassed a pulse-to-pulse-triangular square. Then I deconvolutee the convoluted signal using a triangular pulse with deconvolution tool in labview. Then, I tried to do the deconvoltion using the FFT algorith but did not work. Y at - it someone who has an idea on how to perform deconvolution using FFT.

Regrads

Charles

Hi Charles,

It should work to 8.5.  Let us know if you still hurt to open it.

-Greg J

Tags: NI Software

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