Dear all,(adsbygoogle = window.adsbygoogle || []).push({});

I am trying to understand something for SNR,

I know that is the ratio of the Power of a signal divided by the Power of noise.

According to wikipedia

This is something that I was expecting to read.Code (Text):

Signal-to-noise ratio is defined as the power ratio between a signal (meaningful information) and the background noise (unwanted signal):

\mathrm{SNR} = \frac{P_\mathrm{signal}}{P_\mathrm{noise}},

where P is average power. Both signal and noise power must be measured at the same or equivalent points in a system, and within the same system bandwidth.

MY question though is "how do we measure the noise"?

If you have a receiver and a filter you can measure how much energy is received but how can you measure how much of "noise" is in it?

I would like to thank you in advance for your help

Best Regards

Alex

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# SNR how to measure noise

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