[opendtv] Re: Multi-band TV receiver and DVB-H

  • From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
  • To: <opendtv@xxxxxxxxxxxxx>
  • Date: Thu, 27 May 2004 12:33:39 -0400

John Shutt wrote:

> Doug,
>=20
> The main reason DVB-H was designed as a spec was for low
> power consumption.
> Are you telling me that the 4th generation Lynx or 5th
> generation Zenith, or
> Nth generation ATI/Nxtwave chips, with their acres of silicon
> devoted to
> equalization processing, are low power?

John,

What Doug is saying is that you can create a power-saving and
mobile version of ATSC/8-VSB just as DVB created a power
saving and mobile version of DVB-T/COFDM. I'm not sure why
you continue to think that there can only be one solution to
these problems.

The Linx tuner can be modified to wake up only when the training
sequence arrives, for example, which occurs every 24 msec or so.
If the training sequence is used, the tuner can lock onto the
symbols right away.

The equalizer would only need to function while you're receiving
the short burst of information. So no big deal.

And in the bargain, you just might be able to eek out more
b/s/Hz this way.

Bert
 
 
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