Adaptive Peak-to-Average Power Ratio Reduction of MC-CDMA Signal by using Seven Codes

Y. Luan, J. Li, and J. Liu (PRC)


Multicarrier Peaktoaverage power ratio (PAPR); ZadoffChu code; CInewman code; WalshHadmard code; Multipath Channel


: A main disadvantage of multicarrier modulation is that it exhibits a high peak-to-average power ratio (PAPR). This paper uses seven sequences as the spread code, thus reducing MC-CDMA signal PAPR and analyzes the PAPR and BER performances of seven systems in multipath channel. Simulation results show that corresponding to the simulation parameters, using Zadoff-Chu or CInewman code in uplink as spreading sequence, and Walsh-Hadmard code in downlink, the PAPR of MC-CDMA system is less than 7dB, and BER is less than 1E-4 when SNR is 30dB.

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