Week 3

What is the main reason for suppressing the carrier in DSBSC modulation?

• To increase the power of the transmitted signal.

• To reduce the bandwidth of the transmitted signal.

• To eliminate the carrier power, which carries no information.

• To simplify the receiver circuitry.

In DSBSC modulation, what is the bandwidth of the transmitted signal?

Which of the following is a characteristic of DSBSC modulation?

• The carrier is fully transmitted.

• Both sidebands are transmitted, but the carrier is suppressed.

• Only one sideband is transmitted.

• The carrier and one sideband are transmitted.

What is the efficiency of DSBSC modulation compared to DSBFC?

• 50%

• 66.67%

• 100%

• 33.33%

Which method is used to generate SSBSC signals by selecting one sideband using a filter?

• Phasing method

• Filtering method

• Balanced modulator method

• Indirect method

In SSBSC modulation, what happens to the carrier and one sideband?

• Both are transmitted.

• The carrier is transmitted, and one sideband is suppressed.

• The carrier is suppressed, and one sideband is transmitted.

• Both are suppressed.

What is the main advantage of SSBSC over DSBSC?

• Higher power efficiency.

• Reduced bandwidth requirement.

• Simpler receiver circuitry.

• Higher carrier power.

Which of the following is a disadvantage of DSBSC modulation?

• It requires more bandwidth than SSBSC.

• It is less power-efficient than DSBFC.

• It cannot be demodulated using an envelope detector.

• It requires a highly complex transmitter.

What is the purpose of the balanced modulator in DSBSC generation?

• To amplify the carrier signal.

• To suppress the carrier and generate sidebands.

• To filter out one sideband.

• To demodulate the signal.

In VSB (Vestigial Sideband) modulation, what is transmitted along with one sideband?

• The full carrier and a portion of the other sideband.

• Only the carrier.

• A portion of the carrier and a portion of the other sideband.

• Only one sideband.