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What is difference between amplitude modulation and frequency modulation with respect to signal to noise ratio?
Wiki User
∙ 12y ago
In FM noise is low as compared to AM.
The AM signal covers more distance than FM signal that's why it gets more distorted.How ever the information in AM signal does not lose but the noise effects it more than that of FM signal,so we get signal with more noise than that of FM signal
For FM
Carson's rule
Main article: Carson bandwidth rule
A rule of thumb, Carson's rule states that nearly all (~98%) of the power of a frequency-modulated signal lies within a bandwidth of
where , as defined above, is the peak deviation of the instantaneous frequency from the center carrier frequency .
Noise quieting
The noise power decreases as the signal power increases; therefore the SNR goes up significantly.
Thanks,
By tauseef ahmed
Wiki User
∙ 12y ago
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John N. Morrissey has written: 'A comparison between frequency modulation and amplitude modulation for a distance measuring equipment' -- subject(s): Electronics
