GO-MC-CDMA could effectively reduce the complexity of multi-user detection algorithm in MC-CDMA system. For its further research, the simulink-based simulation model of the GO-MC-CDMA baseband system is constructed and the performance of GO-MC-CDMA system with different channel coding, digital modulation and different length of cyclic prefix is analyzed. The results show that this simulation model could provide an effective way for in-depth research of GO-MC-CDMA.