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In frequency modulation, there is a large increase in noise and hence increase in the signal to noise ratio.

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In frequency modulation, there is a large increase in noise and hence increase in the signal to noise ratio.

(a) True

(b) False

This question was addressed to me in semester exam.

Enquiry is from Costas Loop topic in chapter Double Sideband Suppressed Carrier Modulation of Analog Communications

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Right choice is (b) False

For explanation: In communication, Signal-To-Noise ratio (SNR) is defined as measure of the amount of signal present compared to the surrounding noise. It is the ratio of signal power to noise power. Thus, in frequency modulation, if there is a large decrease in noise, then there will be increase in the signal to noise ratio.

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