Performance analysis of a Multi-tone direct sequence code division multiple access (MT-DS-CDMA) system over a nakagami-m fading channel

Abstract

Performance analysis has been carried out for a multi-tone DS-CDMA wireless communication system over a faded channel considering the channel limitations. The analysis is based on MT-DS-CDMA system and a rake receiver with maximal ratio combining (MRC) diversity combining technique. The expressions for the output signal and (Multiple Access Interference) MAI has been derived for the above system model. The expression for the SNR and the unconditional BER at the output of the receiver has also been derived. The performance results has been evaluated numerically in terms of SNR, BER and the power penalty due to channel effect. The optimum system design parameters have been found for the numerical results. Also simulation works has been done for different parameters and comparison has been done with one of the most effective CDMA scheme among all the systems.