As Dave says,
Make the modulator and demodulator available in a form easily incorporated
into existing digital mode applications
This is so very important. Olivia / MT63 is easy to implement because Pavel
made source code available. If the source for a new mode is available in a
commonly
@yahoogroups.com
Sent: Sunday, August 3, 2008 11:46:11 AM
Subject: Re: [digitalradio] Has anyone looked into FPGA-based digital
modes?
Hi Paul,
Sounds like you might be getting caught up with some of your other
work
and can devote some time again to digital modes:) For those who
AA6YQ comments below
From: digitalradio@yahoogroups.com [mailto:[EMAIL PROTECTED] On
Behalf Of Bill McLaughlin
Sent: Sunday, August 03, 2008 5:02 PM
To: digitalradio@yahoogroups.com
Subject: [digitalradio] Re: Has anyone looked into FPGA-based digital modes?
To echo what Rick stated
I believe that both the AX.25 and the BBS model are OK, but that the
packet channel coding is a disaster in the sense that a single erroneous
bit trashes a frame. That fires up the retries chain that are so
detrimental to the link capacity, and may sever it as well.
Pactor does a _LOT_
I fully agree that just having a new mode that might be marginally
better than a popular mode will have a difficult time competing. While
most ragchewers would not necessarily need an ARQ mode, I personally
prefer it. But I am in the extreme minority. I used to have Amtor
contacts in old days
Think of a FPGA as a logic device. Think of DSP as a analog
device when it comes to applications. I know both are logic,
however, a DSP is designed for the analog application. Both take a
lot of development software and programming. Both are both best
programmed by someone who thinks
