Analysis effect of discrete wavelet transform in multi carrier code division multiple access

Abstract

Multi Carrier Code Division Multiple Access (MC-CDMA) has become options for high data rate systems in high mobility without reducing the interference robustness. Discrete Fourier Transform (DFT) MC-CDMA still has usual problem of Multi Carrier Modulation (MCM) that is high Peak to Average Power Ratio (PAPR), but this problem can be reduced by replacing fourier transform with wavelet transform. This paper will analyze the result of Discrete Wavelet Transform (DWT) MC-CDMA compared with DFT MC-CDMA. The simulation results showed that DWT MC-CDMA system has better quality than DFT MC-CDMA but DWT MC-CDMA has higher complexity than DFT MC-CDMA.