how to estimate the snr from the PSD figures

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xusoso

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anyone can help me . thanks .[/img]
 

xusoso said:
anyone can help me . thanks .[/img]

I know this image so much coz i saw it alot while my gradutaion project...


Look to calc. SNR from PSD figure..it is 99.99% that u create this image by using Matlab or simulink anyway

u will going to create a func. which 1'st search for the max. in the BW of interest and then store the its value (and the value of 2 or 3 points left & right from the peak)
then u sum all the values from 0 to the end of BW (without taking the points of the peak)

So u now got the signal power value and the noise power..

SNR=Ps/Pn

u got it ......

i hope u get me..
 

you can find some free matlab program to cal SNR
 

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