[opendtv] Re: PR: Enhanced AC-3 Audio Specifications Serve Multiple Applications

John,

Your comparison between DVB-hierarchal modulation and E-VSB is nebulous. 
You have no quantitative data to support your assertion.

I recall the NAB demonstration. I was impressed but show me the direct C/N 
ratio, BERs and bandwidths employed for a direct comparison. I suspect that 
you will find that E-VSB is more robust under the comparison you describe.

Terry Harvey
----------------------------------------------------------------

At 04:18 PM 4/8/2004 -0400, John Shutt wrote:
>I also equate E-VSB to DVB-T HM, but in concept only.  ATSC takes a bigger
>hit in the high capacity bitstream to provide the robust stream than DVB-T
>HM does.
>
>For every Mbps of robust in ATSC, you subtract 2 Mbps from the standard
>stream.  So for 4 Mbps of robust ATSC you get 11 Mbps of standard stream.
>
>For DVB-T, the mode that was demonstrated in Las Vegas (almost exactly) 4
>years ago at NAB 2000 had 13.6 Mbps in the LP stream and 4.5 Mbps in the HP
>stream.
>
>John Shutt
>
>----- Original Message -----
>From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
>To: <opendtv@xxxxxxxxxxxxx>
> > I equate E-VSB to hierarchical mode in DVB-T. For DTT, the
> > price you pay in payload reduction is apparently not worth
> > it to real operators.
> >
> > Bert
>
>
>
>----------------------------------------------------------------------
>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.


 
 
----------------------------------------------------------------------
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: