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FM and PM are more susceptible to noise than AM signals.

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in Avionics by (87.1k points)
FM and PM are more susceptible to noise than AM signals.

(a) True

(b) False

The question was asked in an interview for internship.

My doubt stems from Frequency, Phase Modulation, Modulation Index and Sidebands topic in division Amplitude & Frequency Modulation of Avionics

1 Answer

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Right option is (b) False

The explanation is: Noise only affects the amplitude and not the frequency of the signal. In Amplitude modulation, the effect of noise is loss in information whereas in FM it does not affect as much as in amplitude modulation since the information is in the frequency and not in the amplitude.

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