Thanks - I'll give it a try.
On Sat, Mar 26, 2016 at 10:09 AM, Andy Walls <a...@silverblocksystems.net> wrote: > Hi Tom, > > The corr_est block needs to match against the NRZI encoded symbols, so yes > I used 7 ones for the hdlc flag. > > The HDLC flag has two possible NRZI encodings depending on the initial > state: > > 01111110 - HDLC flag byte > 1 00000001 - NRZI encoded HDLC flag byte, initial state 1 > > 01111110 - HDLC flag byte > 0 11111110 - NRZI encoded HDLC flag byte, initial state 0 > > > So encoding your two byte sequence: > > 01111110 00100001 > 1 00000001 01101011 > or > 0 11111110 10010100 > > You should build your corr_est preamble samples based on one of these. > > Regards, > Andy >
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