Cross-correlation

Cross-correlation with SDPSK modulation

Cross-correlation with SDPSK modulation
  1. What is cross-correlation in DSP?
  2. How do you find the cross-correlation of two signals?

What is cross-correlation in DSP?

In signal processing, cross-correlation is a measure of similarity of two series as a function of the displacement of one relative to the other. This is also known as a sliding dot product or sliding inner-product. It is commonly used for searching a long signal for a shorter, known feature.

How do you find the cross-correlation of two signals?

To detect a level of correlation between two signals we use cross-correlation. It is calculated simply by multiplying and summing two-time series together. In the following example, graphs A and B are cross-correlated but graph C is not correlated to either.

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