[email protected] wrote:
But this must reduce the possible throughput - you throw away some bit combinations
(in a way similar to Compact Disc 8 to 14 bits coding).
Undoubtedly Marek, any Error Correcting Code requires the sacrifice of
some bandwidth to
do its magic. And while this is not strictly an ECC, there is
notwithstanding a price to pay...
[email protected] wrote:
Hi Alberto,
Will one of the big "pro's" of COFDM -its immunity to multipath and
"reflections"- really so important on LF with a very low symbol rate ?
- well this is just an initial thought, I don't really know much about
COFDM except that it is used in DVB-T (which we don't have in this
underdeveloped part of DL yet, hi).
Hi Wolf,
what I had in mind was to use the multiple, orthogonal signalling
frequencies not for their multipath rejection characteristics,
but to implement a sort of redundant signalling scheme, where you could
have one, two, three or more slots ruined by QRM
(Loran comes to mind) and nevertheless have a correct copy, thanks to
the error correcting capabilities made possible by the
redundancy in the coding scheme. Probably this is not orthodox COFDM,
but I don't have a better name for it.
But these are just the kind of thoughts you have when you relax and
close your eyes. All the gory details have to be worked out yet.
73 Alberto I2PHD
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