一种复合混沌序列生成算法  

A composite chaotic sequence generation algorithm

作　　者：徐东明 王园慧 

机构地区：[1]西安邮电大学通信与信息工程学院,陕西西安710121

出　　处：《西安邮电大学学报》2017年第5期84-88,93,共6页Journal of Xi’an University of Posts and Telecommunications

摘　　要：给出一种复合混沌序列生成算法。将一维Chebyshev型混沌映射代入一维Logistic型混沌映射,并用m序列以异或的方式叠加到该混沌映射中,迭代产生一种新的复合混沌序列。数据仿真结果显示,新产生的复合混沌序列有着更强的初值敏感性和更高的复杂度,系统误码率低,在相关性、随机性和周期性方面优于一维Logistic型、Chebyshev型混沌序列。以所给方向产生的复合混沌序列适用于跳时扩频通信系统。A composite chaotic sequence generation algorithm is proposed.One dimensional Chebyshev type chaotic mapping is substituted into one dimensional Logistic type chaotic mapping,and the m sequence is superimposed on the chaotic map by XOR,thus,a new chaotic sequence is generated by iteration.The data simulation results show that,the new compound chaotic sequence has a stronger initial sensitivity and higher complexity,the system error rate is low as it is introduced into the time hopping spread spectrum communication system,its correlation,randomicity and periodicity are better than those of one dimensional Logistic type,Chebyshev type chaotic sequence.The compound chaotic sequence generated by the given direction is suitable for the time hopping spread spectrum communication system.

关 键 词：跳时扩频 复合序列 混沌序列 初值敏感性 误码率 

分 类 号：TN914.42[电子电信—通信与信息系统]