Patent ID: 7277470
Filing Date: 2007-10-02
Classification: H04B,H04L

Abstract:
1. A multi-user detection method for a receiver in a multi-carrier code division multiple access telecommunication system, each communication to or from a user of the system being coded with a signature, the signal received by said receiver being decomposed into a first plurality (L) of frequency components corresponding to a first plurality (L) of carriers, comprising: subjecting said first plurality (L) of frequency components to a first filtering matched to the respective signatures of a second plurality (K) of users and to common or respective responses of the transmission channels associated to said communications to or from said users, where K is less than L, subjecting the output of said first filtering to a forward filtering followed by an estimation of the symbols transmitted to or by said users, subjecting said estimated symbols to a backward filtering, the output of said backward filtering being subtracted from the output of said forward filtering prior to said estimation.