1. Computer Science Engineering (CSE)
  2. Communication Engineering
  3. In QAM, the amplitude is                ...

In QAM, the amplitude is                and phase is                

A. varied, constant
B. varied, varied
C. constant, varied
D. constant, constant
Answer» B. varied, varied
Explanation: quadrature amplitude modulation (qam) is obtained by allowing the amplitude to also vary with the phase. thus, the constellation consists of square lattice of signal points.
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