[opendtv] Re: Demand for free DTV rising in Australia

Dale,

I accept that the day has long gone where this issue had relevance to the
public and you have no choice but to move forward with 8-VSB.
It is the whys and if onlys that still stir debate. I find it interesting
that there has never been any direct challenge to the accuracy or validity
of the technical arguments and evidence put forward by yourself and Bob. I
noted that some who I thought should be interested, showed no interest in
seeing Bob's COFDM demo video. I have seen it. It was impressive but I lack
a comparative 8-VSB demo. Obviously, ATSC was not developed with mobile
operation a priority but the very thing that makes COFDM strong in the
mobile environment also makes it robust when things in the environment move.

Regards
Barry

On 6/23/07, Dale Kelly <dalekelly@xxxxxxxxxxx> wrote:


Barry Wrote:
"Purely from an academic point of view, I would have thought all you
engineering types would always be keen to do up to date comparison testing
of what has historically been 2 distinctly different modulation
techniques.
How do you actually know where ATSC is compared to the latest DVB-T
receiver
performance if it has not been tested recently. There could be quite a gap
or none at all".

I'm all in favor of comparative testing, but in an objective environment -
which does not exist in this particular instance.
The original Sinclair 1999 "tests" demonstrated the inadequate performance
of ATSC receivers while showing the superior performance of COFDM
receivers.
This was a very fair demonstration conducted alternately using the same
transmitter and antenna systems for both signals. When these facts were
published a political firestorm was created in which Sinclair was
pilloried
by the CE industries and certain of its broadcast sycophants. The
economic/political obfuscation of this issue was successful in deflecting
the debate.
A later "test" was conducted by NAB/MSTV and was tainted by the CE
industries involvement in its planning and execution. The industry feared
political ramifications from any recommendation to change modulation
standards at such a late date; a red herring if there ever was one.
I do not believe, in the existing political environment, that unbiased and
subjective testing can be done and if done, it certainly would not receive
an objective reception by those who could act upon it.
I now set back and await the opendtv firestorm.

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