Carrier recovery

1. What is meant by carrier recovery?
2. What is carrier recovery in digital modulation?
3. How synchronization and carrier recovery is important in digital modulation?
4. How do you recover a modulated signal?

What is meant by carrier recovery?

A carrier recovery system is a circuit used to estimate and compensate for frequency and phase differences between a received signal's carrier wave and the receiver's local oscillator for the purpose of coherent demodulation.

What is carrier recovery in digital modulation?

Carrier recovery refers to establishing a local carrier reference signal which accurately reproduces the frequency and, with some modulation methods, the phase of the carrier of the modulated signal.

How synchronization and carrier recovery is important in digital modulation?

Carrier synchronization is one of the key components in digital communication systems. Briefly, carrier synchronization concerns the estimation and compensation of the carrier frequency and phase differences between the transmitted signal and the corresponding received signal.

How do you recover a modulated signal?

The demodulation process recovers the original information (modulating signal) from the carrier signal. The process of demodulation is also called detection or discrimination, and the device constructed for demodulation can be called a demodulator, detector, or discriminator.