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प्रश्न
Explain the term demodulation used in a communication system.
With reference to communication systems, what is meant by demodulation?
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उत्तर
Demodulation is the process of retrieving information from the carrier wave at the receiver end. It is the reverse process of modulation.
संबंधित प्रश्न
Explain the terms : Transmitter in communication system
Write the functions of the following in communication systems:
Transmitter
Write the functions of the following in communication systems:
Modulator
Write the functions of the following in communication systems:
Transducer
Write the functions of the following in communication systems:
Demodulator
A device X used in communication system can convert one form of energy into another. Name the device X. Explain the function of a repeater in a communication system.
Explain the basic concept of mobile telephoning ?
A basic communication system consists of ______.
- transmitter.
- information source.
- user of information.
- channel.
- receiver.
Choose the correct sequence in which these are arranged in a basic communication system:
Which of the following would produce analog signals and which would produce digital signals?
- A vibrating tuning fork.
- Musical sound due to a vibrating sitar string.
- Light pulse.
- Output of NAND gate.
Figure shows a communication system. What is the output power when input signal is of 1.01 mW? (gain in dB = 10 log10 (Po/Pi).
