Patent ID: 6987747
Filing Date: 2006-01-17
Classification: H04J,H04L

Abstract:
1. Method of assigning one or more spreading sequences among a family of spreading sequences to a user of a Multi-Carrier Code Division Multiple Access transmission network, each element of said sequence being, at the level of a transmitter of said network, multiplied by a data item to be transmitted and then transmitted on a corresponding sub-carrier, comprising: assigning, to said user, said one or more spreading sequences; and minimizing a function representing the interference between said one or more sequences, on the one hand, and spreading sequences of a predetermined set, on the other hand, said predetermined set being included in said family of spreading sequences; wherein the minimizing function dynamically selects the best sequences from the predetermined set of spreading sequences in the family of spreading sequences as the number of needed sequences changes, and the number of selected sequences is less than or equal to the total number of spreading sequences.