DSPRelated.com
Free Books

Cross-Correlation


Definition: The cross-correlation of two signals $ x$ and $ y$ may be defined by

$\displaystyle r_{xy}(l) \isdef E\{\overline{x(n)}y(n+l)\}$ (C.24)

I.e., it is the expected valueC.1.6) of the lagged products in random signals $ x$ and $ y$ .


Next Section:
Cross-Power Spectral Density
Previous Section:
Sample Variance