Howtosignalprocessing
- What is signal demodulation?
- What are the demodulation techniques?
- What is digital demodulation?
- What is amplitude demodulators?
What is signal demodulation?
Demodulation is defined as extracting the original information-carrying signal from a modulated carrier wave. A demodulator is an electronic circuit that is mainly used to recover the information content from the modulated carrier wave.
What are the demodulation techniques?
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 is digital demodulation?
Demodulation is the process of restoring the data bits back from a digitally modulated signal. Last week we discussed a simple digital communication scheme called Binary Phase Shift Keying (BPSK). In BPSK, we take a stream of bits and map these bits to a stream of symbols with value -1 or +1.
What is amplitude demodulators?
Amplitude demodulation is the reverse process of modulation. Demodulation or enveloping is used to recover the signal or to detect the message coded on the carrier signal. It filters out the carrier to determine the original signal amplitude.
