Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← TechnologyWhich mechanism limits the usable bandwidth during quadrature amplitude modulation (QAM) demodulation processing?
A)Symbol interference from channel dispersion✓
B)Thermal noise within receive amplifiers
C)Phase noise in the local oscillator
D)Quantization error from ADC resolution
💡 Explanation
Symbol interference arises because channel dispersion causes signal spreading, leading to overlap between symbols during demodulation, therefore limiting bandwidth; rather than noise or oscillator instability which also degrade demodulation, symbol interference is amplified in the processing stage.
🏆 Up to £1,000 monthly prize pool
Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.
Related Questions
Browse Technology →- Which effect occurs when excessive fuel accumulates upstream of a closed intake valve in a gasoline engine?
- Which risk increases when rapid inductor discharge occurs across a reverse-biased diode?
- Which consequence results when a variable-frequency drive controlling a centrifugal pump experiences a rapid voltage transient?
- During an aircraft landing with deactivated spoilers, which consequence results from the delayed deployment of reverse thrust?
- Which heat transfer impairment results when desuperheating in a refrigeration cycle falters?
- Which outcome occurs when proportional valve hysteresis shifts?