www.a00.de > tcpgroup > 1995 > msg00232

TCP-group 1995

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: MACA, DUAL, FEC, etc.

>- I've tested the error correcting code and it isn't fast enough even
>  for 56kbps let alone higher, and if you have a multiple ports CPU
>  loading gets worse. This sort of thing will have to go in the modem
>  or TNC for high speeds, but can stay on the host CPU for low speeds.

Which ECC code? N9FZX's Reed-Solomon package? My convolutional
decoders can both handle symbol rates fastter than that, although to be
fair Paul said he had a lot of speed tricks he was planning to apply.

And what makes you think that the Z-80 CPU in the typical TNC will do
FEC any faster than the 486DX2 on a typical PC...? I've said it before
and I'll say it again -- we hams simply can't beat a mass-market PC
for price-performance on general purpose tasks and we shouldn't even
try.  We should restrict our limited hardware development resources to
those things we *can't* buy in the mass computer market.


Document URL : http://www.a00.de/tcpgroup/1995/msg00232.php
Ralf D. Kloth, Ludwigsburg, DE (QRQ.software). < hostmaster at a00.de > [don't send spam]
Created 2005-01-02. Last modified 2005-01-02. Your visit 2021-10-25 02:27.42. Page created in 0.0134 sec.
[Go to the top of this page]   [... to the index page]