【摘要】 多载波CDMA技术是CDMA和正交频分复用(OFDM)技术的综合,具有抗干扰能力强、频谱效率高、数据传输速率高等优点,在未来个人通信业务(PCS)和第三代移动通信中具有良好的发展前景。但是,多载波CDMA信号峰平比比较高,影响到功放的功率效率,这已成为目前多载波CDMA系统实用化的一大障碍。本文利用格雷互补序列的特性有效降低多载波CDMA信号的峰平比,对于任意载波数的多载波CDMA信号,其峰平比上限为6dB。更多还原

【Abstract】 MC-CDMA,which is combination of CDMA and OFDM, has good foreground in Personal Communication Services (PCS) and 3G Mobile Communications in future for its advantages. Though, that the high peak to average ratio (PAR) of signals may decrease efficiency of power amplifier has become a obstacle in its utilization. This paper presents algorithm which can reduce the PAR of MC-CDMA with Golay complementary sequences. The PAR of a MC-CDMA signal witharbitrary carriers can be reduced no more than 6dB.更多还原