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In which type of modulation is a 1 distinguished from a 0 by shifting the direction in whichthe wave begins?

a.bandwidth modulation
b.amplitude modulation
c.frequency modulation
d.phase modulation
e.codec modulation

Respuesta :

Answer:

E. Codec modulation

Explanation:

Codec is used to encode digital signals for transmission.

Amplitude modulation uses the amplitude of the carrier wave to encode or modulate the information for transmission.

The phase of a wave changes with respect to the amplitude, so information is modulated with the phase angle as amplitude changes in phase modulation.

Bandwidth modulation is a form of modulation that encode the information of a fixed bit size based on the frequency of the carrier wave. It is similar to frequency modulation, but frequency modulation modulate a signal wave information.

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Phase modulation is a type of modulation where one (1) is distinguished from zero (0) by shifting the direction in which the wave begins (Option d).

  • Analog transmission refers to a methodology of transmission that transmits information by a continuous signal, which can vary in amplitude, phase, and other characteristics related to the proportion of such information.

  • Phase modulation is a pattern used for conditioning communication signals and then for the transmission of that signals.

  • This type of modulation (phase modulation) employs variations in phase and amplitude for carrying out the modulation and it is used for analog transmission.

In conclusion, phase modulation is a type of modulation where one (1) is distinguished from zero (0) by shifting the direction in which the wave begins (Option d).

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