[opendtv] Re: Dying is easy, mobile TV is hard
- From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Thu, 11 Sep 2008 16:46:48 -0400
John Shutt wrote:
> Interesting. My take on this article is that the existing
> digital terrestrial broadcasting standard (DVB-T) works well
> enough for mobile that it isn't worth the expense to build
> out a DVB-H specific network.
You missed the part about, "if the country uses 16-QAM rather than
64-QAM," (paraphrased). Which is why France is now being considered the
last hope for DVB-H. They use 64-QAM.
> Something that will never be said in the United States, which
> opens the door for Qualcomm's MediaFLO and the upcoming ATSC
> add-on M/H standard.
I suppose, equating 8-VSB with 64-QAM, that would not be a bad analogy.
But I still think that more can be done with 8T-VSB receivers wrt
dynamic training, which would lead to decent mobile reception.
The push to DVB-T2 is primarily for greater spectral efficiency for HD
programming, and the priority is therefore to fixed receivers. As also
stated in those slides from the RAI Research guys.
Bert
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