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What actually this code explains? where it is used and how to interpret it?

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x is compelex vector.

Answers (1)

Yuan Li
Yuan Li on 21 Oct 2019
In the signal processing field, y is the power of signal x.
the square of 2-norm of x can be seen as energy of x, numel(x) is the length of x, then the ratio of energy and signal length is the signal power.


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