AM signal is likely to be …
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Posted by Sonam Soni 7 years, 11 months ago
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Amar Kumar 7 years, 11 months ago
In case of AM, the instantaneous voltage of carrier waves is varied by the modulating wave voltage. So, during the transmission, noise signals can also be added and receiver assumes noise a part of the modulating signal. In case of FM, the frequency of carrier waves is changed as the change in the instantaneous voltage of modulating waves. This can be done by mixing and not while the signal is transmitting in channel. So, noise does not affect FM signal.
AM is more susceptible to noise because noise affects amplitude, which is where information is stored in an AM signal. FM is less susceptible to noise because information in an FM signal is transmitted through varying the frequency, and not the amplitude.
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