power of a signal
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Image Analyst on 8 Apr 2013
What are the units of your signal? What definition of power are you using? It all depends on what you're starting with and what your definition is. For example with images, the gray level is a unit of energy so to get power you'd have to divide by the exposure time, but then you have to ask if you want the total power integrated over the whole image, or the power on just individual pixels.
Youssef Khmou on 8 Apr 2013
1)Go to Mathw(c) workspace and type :
2)then go and click on "Estimation" block ,
3) click on "Power Spectrum Estimation" .
4) You have six components : "Periodogram" , "Magnitude FFT","Yule-Walker Method" ," Covariance Method" ,"Burg Method" , and " modified covariance method", choose one of them and link it in your model with a scope to visualize the frequency and the Power .
Note : the Power of AWGN is its STD ( Standard deviation)