摘要
混沌作为一种非线性动态系统中的现象,受到了人们的重视,研究工作者纷纷探索他在通信中的可能应用。讨论了一种广泛研究的离散时间动态系统Logistic Map所产生的数字混沌序列,通过与m序列比较,分析了其白噪声统计特性,并用计算机进行仿真,做了相应的实验数据分析。结果表明数字混沌序列具有较理想的自相关和互相关特性,且数目极大,是CDMA系统中扩频码的优选码型。
Chaos has been paid attention as a phenomenon found in non- linear dynamic system, Researchers are looking for its possible application in communication. This paper analyzes the statistic characteristic of chaotic sequences generated by a widely studied discrete time dynamic system,Logistic - Map. Comparing with the m - sequence,the chaotic characteristics and correlative performances of the digital chaotic sequences are analyzed. The data analysis results for the computer simulating experiments are also given in this paper. It is concluded that the digital chaotic sequences are of more well correlative performances and their number is large,they will be one of the best code types for CDMA spread spectrum.
出处
《现代电子技术》
2006年第9期69-71,共3页
Modern Electronics Technique
基金
国家科学基金委项目资助(NSFC60572075)
