How does modulation and demodulation work?

How does modulation and demodulation work?

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.

What is the function of a demodulator in a receiver?

Demodulator : The process of retrieval of information from the carrier wave at the receiver is called demodulation and Electronic Circuit used for it is called demodulator. It is an electric circuit that is used to recover information from modulated carrier wave.

What are the different methods of demodulation?

The methods considered are the lock-in amplifier, high-bandwidth lock-in amplifier, Lyapunov filter, Kalman filter, RMS-to-DC conversion (moving-average filter and mean absolute deviation computation), peak detector and coherent demodulator.

What are the main functions of a receiver?

Receiver is important components of communication systems. Its functions are as follows: Receiver: The receiver operates on the received signal picked up from transmitted signal at the channel output and processes it to reproduce the recognisable form of the original message signal for delivering.

What is the another name of demodulator probe?

The diode detector is the simplest form of detector or demodulator used for AM demodulation – it detects the AM signal envelope. The diode detector is the simplest and most basic form of amplitude modulation, AM signal detector and it detects the envelope of the AM signal.

Why modulation is done?

Modulation is important for the communication system. There are some needs for modulation signals; it helps to spare the signal from the different transmitter, helps to reduce the antenna height, and helps to transmit the signal over a long distance without any interference.

What is difference between modulator and demodulator?

The key difference between modulation and demodulation is that modulation is done at the transmitter side while demodulation is done at the receiver side of a communication system . Both modulation and demodulation occur during data transmission but the two processes are exactly reverse of each other.

What is modulator demodulator more commonly known as?

A modulator-demodulator, or simply a modem, is a hardware device that converts data from a digital format, intended for communication directly between devices with specialized wiring, into one suitable for a transmission medium such as telephone lines or radio.

What are the types of FM demodulator?

Slope Detector

  • Foster-Seeley Discriminator
  • Ratio Detector
  • Pulse-Averaging Discriminators
  • Quadrature Detectors
  • Phase-Locked Loops

    What is modulation and demodulation in a modem?

    Modulation is the process of influencing data information on the carrier , while demodulation is the recovery of original information at the distant end from the carrier . A modem is an equipment that performs both modulation and demodulation.