[opendtv] Re: News: Single-frequency network proposed for over-the-air transmission in New York City
- From: "Allen Le Roy Limberg" <allimberg@xxxxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Wed, 5 Sep 2007 14:03:07 -0400
Mark's point is well made. The deterministic trellis reset (DTR) tool in the
A-VSB kit is what is needed to run an SFN in 8VSB. This tool brings the
trellis coding into proper sync in all the transmitters. Samsung and Rohde &
Schwarz supported the investigation, but were not mentioned in the article.
ION will be presenting a paper on the SFN work at the Oct 31-Nov 2 Broadcast
Symposium.
Al Limberg
----- Original Message -----
From: Mark A. Aitken
To: opendtv@xxxxxxxxxxxxx
Sent: Tuesday, September 04, 2007 1:31 PM
Subject: [opendtv] Re: News: Single-frequency network proposed for
over-the-air transmission in New York City
Actually, not sure there is any loss of efficiency due to the use of A-VSB.
Being that there are a number of tools, if one just uses the DTR (Deterministic
Trellis Rest) with the other enablers for SFN (which are about synchronization,
no addition bits that I know of), where is the penalty? What are the
compatibility issues?
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