Performance analysis of a MC-OFDM DS-CDMA system over a faded channel

Abstract

Performance Analysis will be carried out for a multi-carrier Direct Sequence CDMA (MC-DSCDMA) system with orthogonal frequency division multiplexing (OFDM) in the presence of fading and delay spread. The analysis will be made considering a RAKE receiver to combat the effect of channel fading and delay spread. The expressions for the output signals add interfering terms at the output of the Rake receiver will be divided considering the channel effect. The probability density function (PDF) of the SNR at the output of rake receiver and BER expression will be found considering equal gain combining technique. The performance results will be evaluated based on the theoretical analysis. The limitation on the system BER will be evaluated and the optimum system design parameters will be determined.