Modulation and Demodulation

 * Modulation 

 It is done at the transmitter side. 

It is basically done to transmit data to longer distance.

 it is process of converting data into radio waves by adding information to an electronic or optical carier signal.

*Demodulation 

It is done at the receiver side of a communication.

 it is done to regain the original message signal.

It is process of converting radio waves into data

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