A method of constructing a spreading code associated with a user of a digital code division multiple access digital transmission system and a corresponding method of generating a switchboard.

摘要

The invention relates to a method for constructing a spreading code associated with a user of a code division multiple access digital transmission system and direct sequence. BR/ According to the invention, this method comprises at least one step of concatenation of several different sub-codes (4), namely: BR/ - at least two different basic sub-codes (1), in particular cyclically, and belonging to the same family of basic sub-codes; and BR/ - at least one secondary subcode (2) obtained by circular permutation of one of said basic sub-codes (1).