[opendtv] Re: At noisy World Cup, mobile video is nil
- From: Doug McDonald <mcdonald@xxxxxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Thu, 15 Jun 2006 10:10:52 -0500
Manfredi, Albert E wrote:
> Growing pains trump silly hype. Most, if not all, of the problems
> explained seem obvious. What wasn't clear was what magic was supposed to
> have been infused into these devices to make those problems not occur.
>
> Bert
>
> ---------------------------------
> At noisy World Cup, mobile video is nil
>
> Junko Yoshida
>
> would be the defining moment for mobile TV.
>
> The key, I thought, was actually watching mobile TV broadcast signals on
> a mobile phone in a real-world setting, not the controlled environment
> of a trade-show demonstration.
>
> I should have known better.
>
> Using a mobile TV handset here, I learned a hard truth: Signal
> conditions trump everything. If all you've got is a weak signal, there
> is little to see or appreciate in a mobile TV broadcast.
>
Yep.
It's well known how to make this work: enough power.
That probably means far, far, far more than they have
budgeted. 20 dB more? 30 dB more?
Certainly an SFN of 100 kW ERP transmitters spaced 8 miles
apart should work.
By "work" I mean work like radio: a watchable signal
anywhere, including indoors in any house or apartment.
Apparently they simply are not willing to do what it takes.
I note that around here, even not all the cell phone
companies are successful at getting success inside one of
our lab buildings, because of the glass type in the windows,
while some have signals that do work fine, one even inside
the elevator.
Doug McDonald
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