Circular Cross Correlation using FFT

Version 1.0.0.0 (1.69 KB) by Johannes Schmitz
Calculate the circular and non-circular cross correlation using the FFT method.
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1.8K Downloads
Updated 17 Oct 2013

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Rough idea:
Get the crosscorrelation of two vectors a and b by:

e = fft(c);
f = fft(d);

g = e.*conj(f);

h = ifft(g);

See code for complete version and details like zeropadding.

Cite As

Johannes Schmitz (2024). Circular Cross Correlation using FFT (https://www.mathworks.com/matlabcentral/fileexchange/43967-circular-cross-correlation-using-fft), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2013b
Compatible with any release
Platform Compatibility
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Version Published Release Notes
1.0.0.0