Question
Download Solution PDFThe main purpose of modulation is to
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFModulation is the process in which some characteristics, usually an amplitude, frequency, or phase angle of a high-frequency carrier wave is varied in accordance with the instantaneous value of a low-frequency information signal called modulating signal.
Key Points:
- A low-frequency wave cannot be transmitted to long distances. So, a low-frequency information signal is superimposed on a high-frequency wave, which acts as a carrier of the information.
- A transmitter is a device that processes a message signal into a form suitable for transmission and then transmits it to the receiving end through a transmission medium.
- A receiver is a device that recovers the original message signal from the signal received at the output of the communication channel.
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