Multiuser detection in CDMA using a correlation matrix

摘要

A radio communications receiver which operates to detect radio signals and to recover data representative of the radio signals in the presence of contemporaneously detected interfering signals, the radio communications receiver comprising means to detect the radio signals (6, 8) and to generate digital base band signals representative of the radio signals, means to form a correlation matrix (12) from the base band signals, a data processor (16) which operates to generate a factor (R) of the correlation matrix (S), and to recover the data from the factor, wherein the data processor (16) operates to generate the factor (R) by calculating first elements of the factor (R) from the correlation matrix (S) using a factorisation algorithm, in accordance with a pre-determined structure of the factor (R), and forming second elements of the matrix (R) by selectively copying first elements in accordance with the pre-determined structure. <IMAGE>