John Shutt wrote: > 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. Somehow, A-VSB seems capable of working in a similar way, training on its new training sequence. I can't imagine how using the data symbols themselves for training would make the "look to look" issue any more severe. If anything, the opposite should be the case. Bert ---------------------------------------------------------------------- You can UNSUBSCRIBE from the OpenDTV list in two ways: - Using the UNSUBSCRIBE command in your user configuration settings at FreeLists.org - By sending a message to: opendtv-request@xxxxxxxxxxxxx with the word unsubscribe in the subject line.