what is the need of modulating a signal? will it be right approach to send the information as the signal itself.
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Modulating a signal is required to suit the characteristics of a transmission channel.
Explanation:
"Modulation" is a method of converting data information to "radio waves" by adding detail to an electronic or "optical carrier signal". A carrier signal will be of the steady waveform, frequency, and constant height or "amplitude".
The main objective of modulation in a communication system is to make a modulated signal appropriate to the characteristics of a transmission channel. In "radio communications", modulation is required in "transmission systems" for transferring the message into applicable high frequency "radio channel".
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