Quote:
Originally Posted by chambohambo
Is it correct that 64QAM is more prone to interference than 16QAM?
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In a nutshell, yes. As the modulation goes to a higher degree the guardband between identifiable states gets reduced.
Here is a phaser diagram for QAM16:
Each state is well defined with a large guard band, each point can move around quite a bit due to niose, propgation effects etc and still be easy to distinguish.
Contrast to QAM64:
HTH.
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