Fast Circular (Periodic) Cross Correlation

Versión 1.0.0.0 (2,95 KB) por Travis Wiens
A fast circular cross correlation algorithm for periodic signals, using the FFT.
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Actualizado 3 jun 2009

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Uses fft to calculate the circular cross correlation of two periodic signal vectors.This is equivalent to xc(k)=sum(u1.*circshift(u2,k)), but much faster (on the order of 500 times faster for a 1024 point signal).

The package also includes two examples. One checks the calculation against the definition. The second compares the speed of the fast algorithm to one based on the definition for a range of input vector sizes.

Citar como

Travis Wiens (2024). Fast Circular (Periodic) Cross Correlation (https://www.mathworks.com/matlabcentral/fileexchange/24342-fast-circular-periodic-cross-correlation), MATLAB Central File Exchange. Recuperado .

Compatibilidad con la versión de MATLAB
Se creó con R2007a
Compatible con cualquier versión
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Más información sobre Fourier Analysis and Filtering en Help Center y MATLAB Answers.

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fast_periodic_xcorr/

Versión Publicado Notas de la versión
1.0.0.0