[opendtv] Re: Broadband DTV interferers
- From: Craig Birkmaier <craig@xxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Sun, 27 Jan 2008 09:25:38 -0500
At 10:46 AM -0800 1/26/08, Dale Kelly wrote:
Bert wrote:
Try that with large-area SFNs creating supposed cookie-cutter patters,
where frequency is reused between markets. Recurring interference
problems are practically inevitable.
Yep.
Tests of SFN implementations using the ATSC RP are/were running and to my
knowledge have not yet achieved satisfactory performance. This SFN
performance issue is not isolated to ATSC.
Dale
Let's get something clear here.
I am not talking about reusing the same channels in two adjacent
markets. We would still have a "checkerboard" allocation system as we
have today. The difference would be that the signals from one market
would not be at such high power levels that they would interfere with
a market a "checkerboard jump" away. And this would primarily apply
to areas like the NE corridor where we have channels that cannot be
reused several hundred miles away. In some rural market you might be
able to use virtually all of the channels allocated to TV
broadcasting, as there would not be any markets close enough to
interfere with.
I reject the notion that this stuff cannot be made to work. accept
the notion that TV broadcasters do not want to compete and are
comfortable with an inefficient transmission infrastructure that
relies on other infrastructures to serve 85% of U.S. homes.
Regards
Craig
----------------------------------------------------------------------
You can UNSUBSCRIBE from the OpenDTV list in two ways:
- Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org
- By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word
unsubscribe in the subject line.
Other related posts:
