Preamble is used for

Related MCQs

• For an AM transmitter, class C amplifier can be used after the modulation stage.
• For which of the modulated system, the linear amplified modulated stage is used?
• VSB modulation is used in televisions because it avoids phase distortion at low frequencies.
• Which polarization is used to reduce the depolarization effect on received waves?
• Companding is used in PCM transmitters to allow amplitude limiting in the receivers.
• Which of the following is used to vary the frequency of the carrier frequency in accordance with the baseband signal amplitude variations in direct method of FM generation?
• De-emphasis circuit is used                  
• Why frequency fogging is used in a carrier system?
• Spread spectrum is used for
• Which type is used and preferred in digital logic circuits?