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Answer Posted / satyabrata panda
we all know that baseband signal is a less freqency
signal...as frequency directly propersonal to energy so it
is of low energy signal catagory for which it may
insufficient to travel from transmitter to far placed
receiver end...hence it will needed a high frequeny ...so a
high frequency carrier signal is superimposed on to baseband
signal which lead to a appropiate transmission to receiver
then demodulation made to get original less frequency
modulating signal
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