Question
Fri February 15, 2013 By:

What is modulation?Explain the need of modulations for low frequency signal.

Expert Reply
Fri February 15, 2013
Modulations means, changing the carrier signal by superimposing the message signal over it, so it can be transmitted.
It is very necessary in low frequency domain as most data have high frequency and hence cant be transmitted using low frequency and hence we need to use another carrier signal and use modulation.
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