电讯技术2016，Vol.56Issue(5)：476-482,7.DOI:10.3969/j.issn.1001-893x.2016.05.002
一种高安全性的级联型混沌扩频序列
A High Security Serial Chaotic Spread Spectrum Sequence
摘要
Abstract
The sequence generated by the traditional single chaotic map has the problem of low complexity and poor secrecy. This paper proposes a serial chaotic sequence based on improved Logistic mapping and Cubic mapping. The expression of chaotic mapping by the original low times first order difference equations expands to high times second order difference equation,and mapping iterative process is changed from sin-gle-stage iteration to second-stage cross iteration so that the new sequence produces a more complex map-ping expression of chaos. The nonlinear dynamics chaos characteristics and spread spectrum communica-tion performance of the new sequence are simulated and the results show that the attractors of the proposed chaotic sequence are more complex,the initial sensitivity is more stronger. The complexity of this sequence becomes higher. This sequence possesses much better security performance. Finally the feasibility of the chaotic sequence in spread spectrum communication is verified.关键词
扩频通信/混沌序列/Logistic改进型映射/Cubic映射Key words
spread spectrum communication/chaotic sequence/improved Logistic mapping/Cubic mapping分类
信息技术与安全科学引用本文复制引用
陈紫强,舒亮,谢跃雷..一种高安全性的级联型混沌扩频序列[J].电讯技术,2016,56(5):476-482,7.基金项目
国家自然科学基金资助项目(41201479) （41201479）
广西自然科学基金资助项目(2014jjAA70068) （2014jjAA70068）
广西教育厅重点项目(ZD2014052) Foundation Item:The National Natural Science Foundation of China ( No.41201479) （ZD2014052）
The Natural Science Foundation of Guangxi (2014jjAA70068) （2014jjAA70068）
Key Project of Guangxi Education Department(ZD2014052) （ZD2014052）
