[opendtv] Re: 20060616 Free Friday Fragments (Mark's Monday Memo)

Bert,

The pseudo-training sequences created by A-VSB do not contain payload.  The 
amount of payload lost by the Samsung/Rhode-Schwarz A-VSB method is more 
than the data 'loss' Sinclair used for DVB-T compared to ATSC during their 
1999 Baltimore tests.  Therefore, given the performance of those 1999 
vintage DVB-T receivers compared to today's diversity DVB-T receivers, 
"almost as good" both in terms of spectral efficiency and C/N margins (under 
heavy multipath) is all  you can ever hope for.

John.

----- Original Message ----- 
From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
To: <opendtv@xxxxxxxxxxxxx>
Sent: Friday, June 16, 2006 5:53 PM
Subject: [opendtv] Re: 20060616 Free Friday Fragments (Mark's Monday Memo)



> Obviously, John, none of this would be the least bit exciting if the end
> result were not better than COFDM. The whole point of the exercise is to
> be able to operate in severe multipath, even dynamic multipath, with
> higher spectral efficiency and a lower C/N margin than alternatives.
>
> It wouldn't be nearly as much fun if all I was hoping for was "almost as
> good as."
> 


 
 
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