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Peak-to-Average Power Ratio of Signal in MC-CDMA System
Author(s): SHAO Yuanyuan, YANG Wei, JIA Huaiyi(schoolofelectronicsandinformationengineering, BEIJING Jiaotonguniversity, BEIJING 100044, china)
Pages: 43-
46
Year: 2005
Issue:
5
Journal: Journal of Northern Jiaotong University
Keyword: 多载波CDMA; 峰均功率比; Zadoff-Chu序列;
Abstract: MC-CDMA系统信号的峰均功率比远大于单载波系统.B.M.Popovic对MC-CDMA系统中的扩频码进行了分析,通过数值模拟表明,Zadoff-Chu序列具有最低的峰均功率比,是用于MC-CDMA中的最佳候选.本文通过理论推导得出选用任意长度的Zadoff-Chu序列作为MC-CDMA系统的扩频码,其峰均功率比均不超过3 dB.对长度为32的Zadoff-Chu序列扩频和Golay互补序列扩频的MC-CDMA信号进行了比较,其峰均功率比分别为3 dB和6 dB.
Citations
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