Fast Circular (Periodic) Cross Correlation

버전 1.0.0.0 (2.95 KB) 작성자: Travis Wiens
A fast circular cross correlation algorithm for periodic signals, using the FFT.
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다운로드 수: 3K
업데이트 날짜: 2009/6/3

라이선스 보기

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.

인용 양식

Travis Wiens (2026). Fast Circular (Periodic) Cross Correlation (https://kr.mathworks.com/matlabcentral/fileexchange/24342-fast-circular-periodic-cross-correlation), MATLAB Central File Exchange. 검색 날짜: .

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개발 환경: R2007a
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Help Center 및 MATLAB Answers에서 Fourier Analysis and Filtering에 대해 자세히 알아보기
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fast_periodic_xcorr/

버전 게시됨 릴리스 정보
1.0.0.0