H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 29/14 (2006.01) H04L 1/18 (2006.01) H04L 12/56 (2006.01) H04L 27/34 (2006.01)
Patent
CA 2361374
A portion of signal points that appear at predetermined positions in a signal point stream and that benefit less from a particular form of error immunity - e.g., conversion gain - are transmitted in such a way that their robustness against errors is at least as great as that of the signal point that benefit more therefrom. In preferred packet transmission embodiments of the invention, the ending signal points of a packet are transmitted using a signal point constellation that has fewer signal points than the constellation that is used for the other signal points in the packet.
Une partie des points-signaux qui apparaissent à des positions données dans un flux de points-signaux et qui bénéficient d'une forme particulière d'immunité les protégeant contre les erreurs (par exemple, par gain de conversion) sont transmis de telle sorte que leur capacité à résister est au moins aussi grande que celle de ceux qui en bénéficient le plus. En ce qui concerne la transmission par paquets dont il est question dans cette invention, les points-signaux de fin d'un paquet sont transmis par le biais d'une constellation de points-signaux dotée de moins de points-signaux que la constellation utilisée pour les autres points-signaux du paquet.
Kirby Eades Gale Baker
Lucent Technologies Inc.
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