Home › AP EAPCET (Engineering) › Physics › Communication Systems › QAM sends several bits per symbol by varying whi…
QAM sends several bits per symbol by varying which properties together?
AFrequency and wavelength
BAmplitude and phase
CPhase and polarity
DAmplitude and speed
Answer & Solution
Correct answer: B. Amplitude and phase
QAM combines amplitude and phase changes so each symbol carries multiple bits, raising the data rate.
Related questions
Which modulation form is used on the AM radio broadcasting band?The lower frequency band occupied by the message signal before modulation is called the:Which is an analog-over-analog pulse modulation method?Which of these is a pulse modulation method that sends an analog signal as a digital code?Quadrature amplitude modulation is equivalent to a combination of which two schemes?Which scheme represents digital data by using a finite set of carrier amplitudes?In frequency modulation, which carrier property follows the instantaneous message amplitudThe device that performs both modulation and demodulation in two-way communication is a: