H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 7/00 (2006.01)
Patent
CA 2312039
The invention concerns a method for constructing a frame from a set of data bits, such that part of the frame shows no occurrence of a reference sequence consisting of L bits of value 0, consisting in defining several blocks in the frame said part, for transmitting respective portions of similar length of the set of data bits, and reserving in said part substitution indicator bits (Z¿i?) associated with the blocks respectively. When that bit does not indicate any substitution, the portion of the set of data bits is simply included in the block, and does not contain the reference sequence. Otherwise, each occurrence of the reference sequence in the block is replaced by a substitution sequence of L bits enabling its location.
Une trame est construite à partir d'un ensemble de bits d'information, de façon telle qu'une partie de la trame ne présente aucune occurrence d'une séquence de référence constituée de L de bits de valeur 0. On définit plusieurs blocs dans ladite partie de la trame, pour la transmission de portions respectives de même longueur de l'ensemble de bits d'information, et on réserve dans ladite partie des bits d'indication de substitution (Zi) respectivement associés aux blocs. Lorsque ce bit n'indique aucune substitution, la portion de l'ensemble de bits d'information est simplement incluse dans le bloc, et ne contient pas la séquence de référence. Sinon, chaque occurrence de la séquence de référence dans le bloc est remplacée par une séquence de substitution de L bits permettant de la localiser.
Fauconnier Denis
Le Strat Evelyne
Navarro William
Fetherstonhaugh & Co.
Nortel Matra Cellular
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