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一类折叠次数无限的混沌自映射及其应用
引用本文:何迪,何晨,蒋铃鸽,诸鸿文,胡光锐.一类折叠次数无限的混沌自映射及其应用[J].上海交通大学学报,2001,35(1):10-12.
作者姓名:何迪  何晨  蒋铃鸽  诸鸿文  胡光锐
作者单位:上海交通大学电子工程系,
基金项目:国家自然科学基金重点项目(69735101)
摘    要:提出了一类有限区域-1,1]范围内折叠次数为无限的一维迭代混沌自映射,分析了该映射的混沌产生机制,计算出的Lyapunov指数表明,该混沌映射比一般的有限折叠次数迭代混沌自映射具有更好的混沌特性,利用该映射生成CDMA混沌扩频序列,能获得比工程实用中常见的Gold 序列性能更加优良的自相关与互相关特性,对于改善无线移动通信系统的性能将起到重要的作用。

关 键 词:扩频序列  自相关  互相关  无线移动通信系统  折叠次数  CDMA  混沌自映射  扩频码
文章编号:1006-2467(2001)01-0010-03
修稿时间:2000年1月20日

A Chaotic Map with lnfinite Collapses and lts Applications
He Di,HE Chen,JIANG Ling-ge,ZHU Hong-wen,HU Guang-rui.A Chaotic Map with lnfinite Collapses and lts Applications[J].Journal of Shanghai Jiaotong University,2001,35(1):10-12.
Authors:He Di  HE Chen  JIANG Ling-ge  ZHU Hong-wen  HU Guang-rui
Abstract:A one-dimensional iterative chaotic self-map with infinite collapses within the finite region-1,1] was proposed. The method of generating chaotic signals from the model was analyzed. The calcu-lated Lyapunov exponents indicate that it has better characteristics of chaos than some representative itera- tive chaotic maps with finite collapses. The Code-Division Multiple Access (CDMA) spreading sequences produced by this model can also achieve better autocorrelation and crosscorrelation characteristics than Gold sequences, and it will have important effects in improving the performance of wireless mobile commu-nication systems.
Keywords:
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