摘要
对一种新型的渐进理想的混沌映射模式,从扩频通信对扩频序列的要求出发,详细分析了该映射产生的混沌序列的自相关、互相关特性,偶互相关、奇互相关特性,以及自相关旁瓣均方根、互相关均方根和平衡性.计算机仿真结果表明:该映射产生的混沌序列具有良好的各种相关性和平衡性,并具有复杂的折叠映射模式和众多的序列个数.因此,适合应用在CDMA(Code Division Multiple Access)通信系统中.
A novel approximate optimal chaotic map was discussed.In view of the performance of the spreading sequences for spread-spectrum communication system,the performances on auto-correlation,cross-correlation,even and odd cross-correlation,mean square root of auto-correlation＇s side-lobe, mean square root of cross-correlation and balance of the new sequences were analyzed.The simulation results show that the chaotic spreading sequences generated by this chaotic map possess excellent correlation and balance performances,complex mapping model and large numbers.These good performances make it suitable for CDMA（Code Division Multiple Access） communication system.
出处
《中北大学学报（自然科学版）》
CAS
北大核心
2009年第6期620-623,共4页
Journal of North University of China(Natural Science Edition)
关键词
混沌序列
相关性
均方根
平衡性
扩频
chaotic sequence
correlation
mean square root
balance
spread-spectrum
