Re: "Frame" DVB

[Dr G Fairhurst <gorry@erg.abdn.ac.uk>]

I don't think this is relevent to the CHARTER of the ip-dvb list, 
see:

http://www.erg.abdn.ac.uk/users/gorry/ip-dvb/charter.html

So, I suggest you discontinue this discussion on this mailing list,
it may be more appropriate to carry out on another list.

best wishes,

Gorry


Alessandro De Donno wrote:
> 
> Il giorno Tue, 10 Sep 2002 09:30:49 +0100, in uno stato di totale
> incoscienza,
> gorry <gorry@erg.abdn.ac.uk> casualmente disse:
> 
> > on 9/9/02 5:23 pm, Alessandro De Donno at alessandro.dedonno@unile.it
> > wrote:
> 
> Thanks gorry for your replay. I think it's really hard to compare DVB-S
> and ISO/OSI model under a "level" point of view!
> 
> Just another question.
> We have two coding (outer and inner) and not only one "powered" (for
> example Reed-Solomon) because it would be more expensive (i.e. a
> RS(255,188,8) instead of RS(204,188,8)). And above all we want to avoid
> that random errors (on single bits) enter in the interleaver because it
> couldn't correct burst errors (single bit errors + burst errors). The
> dimensions of the interleaver are based on RS codeword (204 bytes), so
> we can't make the interleaver bigger.
> 
> Is this correct? If not, why two coding? Or: why an interleaver based on
> RS codeword?
> 
> Thanks again, gorry.
> 
> aded