Page 25 - NOISE IN SYSTEM COMMUNICATION
P. 25
HOW TO CALCULATE SNR?
The ratio of Signal Power(S) to the Noise Power(N) which
corrupting the signal
Signal-to-Noise Power Ratio is also called as SNR or S/N.
SNR (unitless)
where;
S = signal power (watts)
N = noise power (watts)
VS = signal voltage (volts)
VN = noise voltage (volts)
Rin = input resistance (ohms)
Rout = output resistance (ohms)
SNR (db)
15
