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Why is modification of signal required for transmission
Over channel?
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Answer Posted / ashish kashyap
Actually the Message signal which we want to send is of low
frequency and frequency is directly proportional to the
power it contains.
So if it is sent without modulation
it cant travel over long distances.
So we modulate the message signal with a high a frequency
carrier for the effective transmission and also the antenna
size is reduced due to the use of high frequency.
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