Forum: GNU Radio access code and preamble

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Nelson Odiwuor (Guest)
on 2009-05-07 18:13
(Received via mailing list)
Hi all,
I was going through the and just to try and
understand how packets are generated. Is it right to say that preamble
not being added to the payload?
"(packed_preamble, *ignore*) =

If it is being added how is it helpful on the receiver side because i
see where it has been used or extracted. I know that it can be used to
contain the training sequence for channel estimation but i doubt it has
used for the same here.  I can only see the access code correlator to
the beginning of payload and no correlator for the preamble. Is it right
assume that the access code correlator alone can be suffice?  What is
significance of *'\x55'* at the end of the packet before introducing
pad? I am asking because according to my understanding it should make
end of payload(post amble) but I don't see a correlator for it.

Kind regards,
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