北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 1998, Vol. 21 ›› Issue (4): 7-11.

• 学术论文 • 上一篇    下一篇

数字混沌扩频通信系统*

王亥, 胡健栋   

  1. 北京邮电大学电信工程学院, 北京 100876
  • 收稿日期:1997-10-09 出版日期:1998-09-10
  • 基金资助:
    高等学校博士学科点专项科研基金和邮电部重点科研资助项目

Digital Chaotic Spread Spectrum Communication Systems

Wang Hai, Hu Jiandong   

  1. School of Telecommunication Engineering,Beijing University of Posts and Telecommunications, Beijing 100876
  • Received:1997-10-09 Online:1998-09-10
  • Supported by:
     

摘要: 系统地研究了Logistic-Map数字混沌序列, 及其“0”、 “1”等概率统计特性和相关特性, 提出了用它构成扩频通信系统的方案, 首次用高斯法导出了它的误码计算式. 并用SPW模型的测试进行验证.研究表明, 数字序列方案可降低运算量, 扩展序列周期, 有较好的效果.

关键词: 扩频通信, 混沌, 相关特性, 误码率

Abstract: The application of Logistic-Map in spread-spectrumcommunications is dealt with. The correlation characteristics of digital sequences of Logistic-Map and the statistical properties of the occurrence of “0” and “1” of the chaotic sequences are investigated. A novel analytic formula for calculating bit-error-rate of digital chaotic spread spectrum communicationsystem is obtained by using Gaussian method. Which is verified by measurements on SPW simulation system. As an economic way for chaotic spread-spectrum comminications, the cyclic period of the sequences can be expand, the complexity and time of its generation can be reduced.

Key words: spread spectrum communications, chaos, correlation property, error rate

中图分类号: