Which of the following performs modulation and demodulation
Which of the following performs modulation and demodulation
The correct option is C Modem
Modem performs modulation and demodulation.
A modulator is a device that performs modulation. A
demodulator (sometimes detector or demod) is a device that performs
demodulation, the inverse of modulation. A modem (from modulator–demodulator)
can perform both operations.
Types of Modulation[edit] There are 3 basic types
of modulation: Amplitude modulation, Frequency modulation, and Phase
modulation. ... a type of modulation where the frequency of the carrier signal
is modulated (changed) in proportion to the message signal while the amplitude
and phase are kept constant.
The most fundamental digital modulation techniques
are based on keying: PSK (phase-shift keying): a finite number of phases are
used. FSK (frequency-shift keying): a finite number of frequencies are used.
... QAM (quadrature amplitude modulation): a finite number of at least two
phases and at least two amplitudes are used.
Modulation: the process of transforming digital
information (1's an 0's) into analog (perceived as sound) signals. In the case
of modems, capable of being transmitted over telephone lines. Demodulation: the
process of transforming analog signals, previously modulated, back into digital
information.
Modem performs modulation and demodulation.
A modulator is a device that performs modulation. A demodulator (sometimes detector or demod) is a device that performs demodulation, the inverse of modulation. A modem (from modulator–demodulator) can perform both operations.
Types of Modulation[edit] There are 3 basic types of modulation: Amplitude modulation, Frequency modulation, and Phase modulation. ... a type of modulation where the frequency of the carrier signal is modulated (changed) in proportion to the message signal while the amplitude and phase are kept constant.
The most fundamental digital modulation techniques are based on keying: PSK (phase-shift keying): a finite number of phases are used. FSK (frequency-shift keying): a finite number of frequencies are used. ... QAM (quadrature amplitude modulation): a finite number of at least two phases and at least two amplitudes are used.
Modulation: the process of transforming digital information (1's an 0's) into analog (perceived as sound) signals. In the case of modems, capable of being transmitted over telephone lines. Demodulation: the process of transforming analog signals, previously modulated, back into digital information.
