[hfsig] Performance of 24/192 soundcards? USB Soundcards
rwmcgwier at comcast.net
Tue Sep 21 20:44:13 CDT 2004
You analysis is correct. This is a self synchronizing descrambler.
It is essentially the anhilating polynomial for the scrambling polynomial.
As such, since it is a polynomial division, it is an "infinite impulse
response" type of configuration. This means that there is error
propagation. The SYSTEM BER does indeed degrade with a hole at zero.
I delivered James paper at the TAPR/ARRL DCC where the work was introduced
(Columbia, Md. a million years ago). He has indeed done a careful analysis
and I believe the orignal paper is still available on his web site as
well as other analysis.
From: hfsig-bounces at lists.tapr.org
[mailto:hfsig-bounces at lists.tapr.org]On Behalf Of
Anthony.N.Martin at marconiselenia.com
Sent: Wednesday, September 22, 2004 12:11 AM
To: TAPR HF Modes SIG Mailing List
Subject: RE: [hfsig] Performance of 24/192 soundcards? USB Soundcards
> There is a 17-stage scrambler that could give you a run of
> 16 or 17 bits without transitions. Now we're down to 50 Hz or so.
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