Your response is useful, but I too am curious about where to find some
documentation regarding the correlator block.
I can look at the source code for gr_simple_correlator, and see that
is a “finite state machine”, but I have no idea what the block is doing
each of the states. I look at the source code of
and see a few comments related to PN codes, but this is confusing
thought that has to do with de-spreading a DSSS signal, not necessarily
demodulation. A coherent explanation of what this thing is doing,
preferably put in the source code in a way that Doxygen can harvest it
be very, very nice. If you or anyone can point me to this, I would be
to put it in the source code myself.
True or False: The way this block gets used in the examples it looks
it is making a hard decision about the state of a bit. In other words,
there would be no way to generate a posterior probability from this
and do some kind of soft decision decoding.
What I am looking to do for my project is generate a set of posterior
probabilities from a 2-FSK modulated signal. Do you know of any
blocks that do something like this already, or am I going to have to
Ed Criscuolo wrote:
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