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any way you do this, if you're using quadrature demod, you must
also not reduce the sample number until *after* you demodulated
your FSK signal.
Again, for something to actually have a frequency, you'd need it
to have a derivable phase. Derivation needs more than one sample.
Best regards,
Marcus
On 22.07.2016 00:42, Ed Criscuolo
wrote:
Your flowgraph intrinsically has one symbol per sample in the
data generation portion. You need a resampler just ahead of the
throttle to interpolate in order to increase the number of
samples per symbol.
@(^.^)@
Ed
Sent from my iPhone
Hi all !
I've been working on this flowgraph for a while
now and I've been able to pinpoint what is not
working, but I don't understand how to resolve
this so, that's why i'm asking for your
guidance.
Take a look at the flowgraph i've joined. The
thing that doesn't seem to be working on this
setup is the samples/symbol in th CPFSK mod block.
When I set this parameter to 1 i'm able to retrieve
my message at the file sink. So it tells me that
what I did is okay in some way.
What is not working is when I set the same parameter
to 6. At the beginning I wasn't using the rational
resampler and it wasn't working. So I thought I would
need something to "divide" the number of samples to
retrieve each symbols. I tried it with the rational
resampler block and set decimation to 6, but then,
Daaaaaah......not working again.
There is something I can't work around here because I do
not have sufficient knowledge about this samples/symbol
thing.
I'd like to hear from you pals if you could give me a bit
of information about how to make this work properly.
thank you !
<CPFSK.grc.png>
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