Re: Which noise parameters?

John O'Flaherty wrote:


E[n(t)^2].
The full signal range is 0 to 2 V. If you reckon the signal power as a
sinusoid of full scale amplitude (to choose an arbitrary figure), it
would have a one-sided amplitude of 1, and a power of (1^2)/2, or 1/2.
The S/N is then (1/2)/.0104 = 48, or 16.8 db.

Thank you very much for your clear explanation.

The value E[n(t)^2] is really a good parameter.

What is still not clear to me is the sense of S/N in this case.
Ok, I understand that I can image as my signal the sinusoid of full scale amplitude and in this way I can calculate my S/N, but the numerator is always the same value (0.5) in all my calculation (because instead of my true signal I have to use always that sinusoid).

At this point, would not be better to use just the E[n(t)^2], instead of the S/N?

Thanks again for your reply.
Gio



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