Question

What is represented by “Figure Of Merit”?

(a) how much noise is in the channel

(b) how much noise is in the communication system

(c) how much noise an amplifier adds to the signal

(d) signal to noise ratio in dB

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Asked question is from Noise in Pulse Modulated System in section Phase Locked Loop & Pulse Modulation of Analog Communications

Answer 1

Correct option is (c) how much noise an amplifier adds to the signal

Easy explanation: Figure Of Merit is a measure of efficiency or effectiveness. It basically represents that how much noise is being added by an amplifier to the signal. However, the signal to noise ratio is the measure of the amount of signal present with respect to the surrounding noise.