Adaptive path selective fuzzy decorrelating detector under impulsive noise for multipath fading CDMA systems

Abstract

This letter proposes a novel adaptive path selective fuzzy decorrelating (APSFD) detector for direct-sequence codedivision multiple-access (DS-CDMA) systems with time-varying multipath fading channels under impulsive noise. The proposed detector combines adaptive path selective decorrelating (APSD) detector with a fuzzy median filter which is based on fuzzy rank ordering of samples to eliminate the effect of impulsive noise. Simulation results clearly show that the proposed detector eliminates the effect of impulsive noise and improves the performance of AND detector under high impulsive noise.