摘要
为了提高扩频通信系统信息传输的可靠性和安全性,提出一种基于复合多涡卷Jerk-Chua混沌与自编码相融合的扩频码构造算法。首先引用二维Henon变换和离散标准映射的构造思想产生一种新的非线性融合函数,其次通过该融合函数将复合多涡卷Jerk-Chua混沌产生的随机序列与自回归自编码随机序列相融合产生高质量复合随机序列作为新的扩频码。最后通过Matlab仿真测试表明,该算法相比现有方法得到的随机序列复杂度更高、随机性和相关性更好,应用于扩频通信系统中的误码率得到了一定改善,能够满足高安全性和高动态变化环境要求的通信系统信息安全保密的传输。
In order to improve the reliability and safety of information transmission in the spread spectrum communication system, a kind of spreading code constructed by means of a combination of generalized complex multi scroll Jerk-Chua chaos and selScoded is proposed. Firstly a new nonlinear fusion function citing by con- struct ideas of two-dimensional Henon transform and discrete standard mapping is produced. Then the complex multi scroll Jerk-Chua chaos sequence is combined with the auto regressive （AR） selScoded sequence by the fu sion function to generate a high quality composite random sequence as a new spreading code. FinaZly Matlab simulation tests show that the algorithm generating random sequence has the higher complexity and the better randomness and correlation compared with existing methods. Bit error rate has been improved in spread spec- trum communication system. The transmission of information security under high security and dynamic chan- ging conditions can be met.
出处
《系统工程与电子技术》
EI
CSCD
北大核心
2015年第4期936-941,共6页
Systems Engineering and Electronics
基金
国家自然科学基金(61073106
61136002)
陕西省自然科学基金(2014JM8331
2014JQ5183
2014JM8307)
陕西省教育厅自然科学资金(2013JK1129)资助课题
