[opendtv] Re: 20060616 Free Friday Fragments (Mark's Monday Memo)
- From: "John Shutt" <shuttj@xxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Fri, 16 Jun 2006 15:32:10 -0400
That might work as long as the change in multipath isn't very great from
snapshot to snapshot. Calculating taps is a recursive process and if there
were drastic changes from "look" to "look" it would require several
iterations to recalculate the proper taps to cancel out the new echo
ensemble. That eats up both time and energy.
John
----- Original Message -----
> Once synchronized, the receiver comes on about 2000 symbols prior to its
> allocated time slot, or 186 usec prior, to train itself. Right after
> this training it receives the data, then goes back to sleep mode.
> Perhaps once in awhile, the receiver looks for the training segment
> again, to correct its internal clock.
>
> That should save a lot of power.
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