On 19/05/2011 1:21 PM, Robert McGwier wrote:
Vlad
It is apparent to me that you did not understand Josh's explanation.
Possibly he was not forceful enough. ;-).
This is not an error. It is the mathematical consequence of doing QAM
with rotational symmetries. YOU MUST provide your OWN synchronization
to remove the phase ambiguity. It is not a bug or an error. It is a
feature. It is the mathematical nature of the beast.
Bob
Perhaps I have only part of the conversation here, but it sounds like
the main complaint is that there are internal errors inside the
QAMx, x=8,16,64,256 demod blocks--they're implemented as hierarchical
blocks in Python.
Looking into it, it seems like there still aren't any implementations of
QAMx demodulators--what is there is basically a hollow shell that
does nothing useful.
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