SYSTEM FOR DECREASING PROCESSING TIME IN AN ITERATIVE MULTI-USER DETECTOR SYSTEM

摘要

A system is provided for use with a multi-user detector MUD, which dramatically decreases the processing time for separating out interfering transmissions from a number of users by eliminating from each processing iteration consideration of those bit estimates for which the probability or estimate of their value exceeds a predetermined threshold and can therefore be declared 'certain'. In a Turbo MUD environment in which the output of the MUD is coupled back to the MUD (14) through an error correction system (28), the output of the error correction is thresholded (30) such that those bit estimates having probabilities or estimates greater than a predetermined threshold are assigned a quantized value and are eliminated from further processing by the MUD.