Digital Modulation Techniques

What does ASK stand for in digital modulation?

• Amplitude Signal Keying

• Analog Shift Keying

• Amplitude Shift Keying Modulation

• Amplitude Shift Keying

In Amplitude Shift Keying (ASK), which parameter of the carrier is changed?

• Amplitude

• Frequency

• • Phase

• Bandwidth

Which modulation technique uses frequency changes to represent data?

• Frequency Shift Keying (FSK)

• Phase Shift Keying (PSK)

• Pulse Width Modulation (PWM)

• Amplitude Modulation (AM)

How does FSK differ from ASK in terms of signal representation?

• FSK and ASK both use amplitude variations for signal representation.

• FSK uses frequency variations for signal representation, while ASK uses amplitude variations.

• FSK uses phase variations for signal representation, while ASK uses frequency variations.

• FSK uses voltage variations for signal representation, while ASK uses frequency variations.

Quadrature Amplitude Modulation (QAM) is a combination of:

• ASK and PSK

• FSK and AM

• ASK and FSK

• PSK and FSK

Which digital modulation technique uses two different frequencies to represent binary data?

• ASK

• PSK

• FSK

• QAM

Which of the following is not a digital modulation technique?

• • Amplitude Shift Keying (ASK)

• Frequency Shift Keying (FSK)

• Phase Shift Keying (PSK)

• Amplitude Modulation (AM)

Which of the following is the main advantage of digital modulation over analog modulation?

• Higher power requirement

• Greater noise immunity

• Simpler circuits

• Requires less synchronization