# 5473ca8c581e2a3f28523bd8

##### 1 Answer

Apr 12, 2016

You need to relate the energy to autocorrelation:

Energy:

Autocorrelation is the convolution of the signal onto itself.

So Autocorrelation deﬁnes signal energy at zero shift, i.e.:

So the answer is yes you do. Realistically if you know the structure

Hope this helps...

Best regards