How does Quadrature Amplitude Modulation (QAM) differ from basic amplitude or frequency modulation techniques?
- QAM combines amplitude and phase modulation
- QAM does not involve modulation
- QAM is a form of single-sideband modulation
- QAM only uses frequency modulation
Quadrature Amplitude Modulation (QAM) is a modulation technique that combines both amplitude and phase modulation. It uses both amplitude and phase shifts to encode multiple bits per symbol, allowing for higher data rates and more efficient use of the spectrum. This is in contrast to basic amplitude or frequency modulation, which use only one of these characteristics for modulation.
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