Exam CWISA-102 Topic 1 Question 2 Discussion

Actual exam question for CWNP's CWISA-102 exam
Question #: 2
Topic #: 1
What does the number in the various Quadrature Amplitude Modulation levels, such as 16 in QAM-16 and 64 in QAM-64, indicate? (Choose the single best answer.)

Suggested Answer: C Vote an answer

QAM Constellations: QAM (Quadrature Amplitude Modulation) uses a constellation diagram where points represent unique combinations of amplitude and phase.
Bits per Symbol: The number in QAM-XX indicates the number of points:
QAM-16: 16 points = 2^4 = 4 bits per symbol
QAM-64: 64 points = 2^6 = 6 bits per symbol
Higher Data Rates: More points in the constellation enable transmitting more bits per symbol, leading to higher data rates at the same bandwidth.
References
QAM: https://en.wikipedia.org/wiki/Quadrature_amplitude_modulation

by Hiram at Jan 16, 2025, 04:39 AM

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