Hi Reino,
Do you mean every CQ is has different bits?
--73, Glenn, AF8C
On 9/30/2024 2:36 PM, Reino Talarmo via wsjt-devel wrote:
Hi Glenn,
Without knowing the exact encoding of the superfox
signal I can say that the forward error correction and
the message error detection parts of the message do
change when a single bit is changed in the data portion
of the message. There could be exactly the same bits in
some part of the message, but as whole the message is
critically different for "exactly the same" message.
With the new OTP information superfox may never send two
bitwise exactly same messages, even when the user data
is the same.
73, Reino OH3mA
-----Original Message-----
From: Glenn Williams via wsjt-devel <wsjt-
de...@lists.sourceforge.net>
Sent: Monday, September 30, 2024 8:20 PM
To: wsjt-devel@lists.sourceforge.net
Cc: Glenn Williams <a...@alumni.caltech.edu>
Subject: Re: [wsjt-devel] SuperFox decoding weak
signal
learning #FH
I have been out of the software engineering loop too
long,
so it would be a chore to dig out the answers to the
following questions from the released code.
A suggestion for SF decoding?
I presume that each time the SuperFox transmits a CQ
the
message that is encoded is exactly the same. I presume
that portions of the signal report and 73 message
contain
exactly the same encoding. I presume therefore that
the
modulation for "exactly the same" data is also exactly
the
same. Therefore once a SuperHound receives those
sections of messages, the software can "learn" what
tones
to expect and where in the stream. So in the case of
QSB
the learned data could be compared to (correlated
with?)
the most recently received audio and thereby an
improved
decode presumption could be supplied.
--73, Glenn, AF8C
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