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3 cards from this section. Quick, good the night before a test.
What does QPSK stand for?
Think about modulation and phase.
What are the two outputs generated by the QPSK modulator?
They refer to in-phase and quadrature components.
What does QPSK modulation primarily change in the signal?
Consider what modulation affects in a signal.
True or False: In QPSK, two bits of data can represent two separate phase changes.
Think about the number of combinations two bits can represent.
Design a VHDL code snippet to implement a 4-QAM modulator and compare it to the provided QPSK modulator.
Focus on how the states change with more bits.
Simulate the QPSK modulator’s output over time with a specific input data pattern and analyze the phase changes visually.
Utilize software tools that allow signal simulation for phase representation.
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