Re: How does digital TV broadcast prevent ghosting effects?

On a sunny day (Thu, 22 Nov 2007 12:49:02 -0800) it happened Joerg
<notthisjoergsch@xxxxxxxxxxxxxxxxxxxxx> wrote in
<nXl1j.754$NY.490@xxxxxxxxxxxxxxxxxxxx>:

So, am I right in assuming that the COFDM technique
being describe as more robust to multipath effects than 8-VSB plays a
part in implementing the error correction scheme?

Well, it's supposed to be, but I don't personally have enough familiarity with
them to say.


We live in heavy multipath.


I have heard that US did chose 8VSB because Europe had an other system,
and 8VSB would help US industry, as Europe then had the same hurdles to
market as the US.
That apart, I have terrestial digital too (no more analog here),
and its uses 64 QAM, with a FEC of 1/2, so a lot of correction bits,
the channels take up 8MHz.
Not all of Europe does this, but the Netherlands does.
I had a weak signal, and reflections, in analog,
perfect reception now in digital, even from stations far away.

I have never understood the 8VSB idea other then political.
http://www.digitalradiotech.co.uk/cofdm.htm
http://en.wikipedia.org/wiki/DVB-T

I have not seen any HDTV over DVB-T here yet, not sure any is planned.
But we have plenty over satellite.

.