新的混沌扩频序列抗多址性能的Simulink仿真  

Simulink Spread Spectrum Communication and Performance of Multi-Access Based on New Chaotic Sequence

作　　者：万康[1] 谢绍斌[1] 翁木云[1] 周双[1] 

机构地区：[1]空军工程大学信息与导航学院,陕西西安710077

出　　处：《电子科技》2016年第1期75-77,82,共4页Electronic Science and Technology

基　　金：国家自然科学基金资助项目(61202490);航空科学基金资助项目(20BZC15008)

摘　　要：针对混沌扩频通信中提升混沌码性能的问题,通过重构Bernoulli映射相空间,得到一种改进的Bernoulli混沌映射,计算证明该映射具有弱结构特性,并在Simulink平台搭建了多用户混沌直接扩频通信系统的仿真模型,并与原Bernoulli混沌序列的抗多址性能做了比较。Simulink动态仿真结果表明,改进后的混沌扩频序列具有较好的抗多址干扰能力。A novel improved Bernoulli chaotic map is proposed according to reconstruction principle for better performance of chaotic spread spectrum sequence. The new map has a weak structure. Then the multi-user spread spectrum communication system is constructed by Simulink. Anti-multiple access capability of the chaotic sequence generated by the improved map and the Bernoulli map is analyzed. Simulation results show that new chaotic sequence has the better ability against noise and multiple access interference than the Bernoulli sequence.

关 键 词：混沌序列 扩频通信 重构 抗多址 

分 类 号：TN914.42[电子电信—通信与信息系统]