Question

In QAM, both ______ of a carrier frequency are varied.

• A. Frequency and amplitude
• B. Phase and frequency
• C. Amplitude and phase
• D. Differential amplitude

Hint:

QAM is widely used in digital communication systems such as cable modems, satellite TV, and wireless networks to transmit high data rates.

Answer 1

The Correct Option is C

In Quadrature Amplitude Modulation (QAM), both the amplitude and phase of the carrier signal are varied. This technique combines amplitude modulation (AM) and phase modulation (PM) to increase the data rate over a given bandwidth.