[opendtv] Re: Twang's Tuesday Tribune (Mark's Monday Memo)2004April20
- From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Thu, 22 Apr 2004 14:36:11 -0400
Frank Eory wrote:
> On second thought, maybe not. Even
> those first DVB-T chips achieved reliable mobile reception at
> autobahn speeds. It's difficult to imagine even Nth
> generation 8-VSB achieving that.
Not so difficult, perhaps.
Linx has placed their mobile OAM system test results on their
web site. Must be a presentation they gave at NAB?
Anyway, they used an SFN (two transmitters), a 4-level robust
mode, 1/2 FEC, and achieved solid reception at 430 Km/h.
Not bad. This is the system they are developing as a candidate
for Chinese TV, where they used an E-VSB-like mode for
mobility. The system is quitre similar to n-VSB in meaningful
ways (like the symbol rate).
Not that I think DTT should be optimized for 430 Km/h ...
Bert
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