Howtosignalprocessing
- What are the 3 characteristics of a demodulation process?
- What happens during demodulation?
- Why do we demodulate signals?
- What is the example of demodulation?
What are the 3 characteristics of a demodulation process?
The demodulator must meet three requirements: (1) It must be sensitive to the type of modulation applied at the input, (2) it must be nonlinear, and (3) it must provide filtering.
What happens during demodulation?
Demodulation. The process of separating the original information or SIGNAL from the MODULATED CARRIER. In the case of AMPLITUDE or FREQUENCY MODULATION it involves a device, called a demodulator or detector, which produces a signal corresponding to the instantaneous changes in amplitude or frequency, respectively.
Why do we demodulate signals?
Demodulation is a key process in the reception of any amplitude modulated signals whether used for broadcast or two way radio communication systems. Demodulation is the process by which the original information bearing signal, i.e. the modulation is extracted from the incoming overall received signal.
What is the example of demodulation?
For example, in a modem, which is a contraction of the terms modulator/demodulator, a demodulator is used to extract a serial digital data stream from a carrier signal which is used to carry it through a telephone line, coaxial cable, or optical fiber.
