Why Are Signals Modulated and Demodulated?
Modulation Is the Process of Encoding Information in a Transmitted Signal, While Demodulation Is the Process of Extracting Information from the Transmitted...
Modulation is the process of encoding information in a transmitted signal, while demodulation is the process of extracting information from the transmitted signal. Many factors influence how faithfully the extracted information replicates the original input information.
Why modulation and demodulation is required?
Modulation is very important step in the transmission of signal. Our message signal is generally a low frequency signal and path loss of signal is proportional to the square of the wavelength (and hence inversely proportional to the square of the frequency).
Why a signal is modulated?
The purpose of modulation is to impress the information on the carrier wave, which is used to carry the information to another location. In radio communication the modulated carrier is transmitted through space as a radio wave to a radio receiver.
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