[opendtv] Re: Opinion: Mobile TV's New Free Market Economy
- From: "Allen Le Roy Limberg" <allimberg@xxxxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Sun, 22 Mar 2009 11:54:39 -0500
The point is that the infrastructure to provide a mobile DTV service over
the low VHF channels is already pretty much in place. A little bit extra
broadcast studio equipment is the only investment required of the individual
broadcaster.
Companies trying to provide a mobile DTV service over the high VHF channels
using COFDM and SFNs would have to finance their build out in an economy
that is unwilling to accept risk.
Al
----- Original Message -----
From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
To: <opendtv@xxxxxxxxxxxxx>
Sent: Thursday, March 19, 2009 5:48 PM
Subject: [opendtv] Re: Opinion: Mobile TV's New Free Market Economy
> Bob Miller wrote:
>
> > How much research is going on with M/H? How far are
> > broadcasters willing to go as far as building out SFN's?
> > How well or possibly will 8-VSB/M/H work with MIMO, SFNs
> > and vertical/horizontal polariztion?
>
> I think you're making a bigger issue of "modulation" than it deserves.
> And you're probably missing the bigger picture, in which SFNs don't even
> figure.
>
> Yes, 8-VSB can work with vertical or horizontal polarization, or MIMO,
> or even SFNs, but that's not the issue. The issue is that if it is FOTA
> broadcasters that will offer mobile service, it's highly unlikely that
> they will do so over a very expensive network of transmitters.
>
> Instead, if it's going to be walled garden service providers to provide
> this mobile BROADCAST service, they may install a more expensive network
> of transmitters, and they will require subscription fees to fund the
> infrastructure. And, as many articles have told us, the uptake of
> by-subscription mobile TV broadcast is so-so. Oh yes, even when it's
> DVB-H.
>
> COFDM is a better choice for mobile SFN-based RF service. But if that is
> something that FOTA broadcasters can ill afford, the point is moot.
>
> More importantly, if the future is not in broadcast at all, but rather
> telco-offered wireless broadband, then SFNs are out the picture anyway.
> Wireless broadband will require a cellular structure, which is not SFNs.
>
> > On the other hand you have broadcasters willing to restrict
> > themselves to MPEG2,
>
> You already know that isn't true, because you already know that M/H
> mandates use of H.264.
>
> Bert
>
>
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