多相互补码及其对多音频信号峰值因子的减小作用  

Multiphase Complementary Codes and Their Effect on Reducing Crest Factor of Multitone Signals

作　　者：颜彪[1] 王海洋[1] 朱一欢[1] 

机构地区：[1]扬州大学信息工程学院,江苏扬州225009

出　　处：《电子测量与仪器学报》2007年第2期49-53,共5页Journal of Electronic Measurement and Instrumentation

基　　金：江苏省国际科技合作计划资助项目(编号:BZ2001036)

摘　　要：本文研究了一种利用于互补自相关函数矩阵构造多相互补码对的方法,并给出了产生核心长度等于10的多相互补码对的例子。对于每一个核心长度,通过改变有关参数可以获得多个多相互补码对,而Golay互补码可以被认为是多相互补码的一个二相子类。提出了利用多相互补码来构成多音频信号以降低其峰值因子。仿真结果表明,它们对应的峰值因子小于或等于6dB,且和音频数无关,和理论分析相吻合。从仿真结果还可看出二进制Golay互补码能够产生对称的多音频信号。A way to construct muhiphase complementary code pair is discussed using complementary autocorrelation function matrix method and an example of constructing multiphase complementary code pairs with the kernel length of 10 is given in this paper. For a given kernel length, a number of muhiphase complementary code pairs can be obtained by changing related parameters and the Golay complementary codes can be considered to be a biphase subclass of multiphase complementary codes. It is proposed that the muhitone signals are formed from the muhiphase complementary codes in order to reduce their crest factors. Simulation results indicate that their corresponding crest factors are less than or equal to 6dB, regardless of the number of tones, which is in agreement with that of theoretic analysis. Also, from the simulation results it is found that the binary Golay complementary codes can produce symmetric muhitone signals.

关 键 词：多音频信号 多相互补码对 Golay互补码 峰值因子 自相关函数 

分 类 号：TN911.2[电子电信—通信与信息系统] TN911.6[电子电信—信息与通信工程]