摘要
提出了一种用于干扰数字通信系统的非对称不变分布的混沌干扰样式。基于混沌映射产生均匀分布的混沌序列,经过相应非线性变换,得到了服从非对称不变分布的混沌干扰信号。与现有干扰信号产生方法相比,该方法易于模块化实现,可控性和可再生性好。理论分析和仿真结果表明,相比于高斯分布干扰,满足Rayleigh分布的混沌干扰对QPSK和16QAM系统具有更好的干扰效果。
An asymmetrical invariant distributed chaotic jamming mode is proposed for digital communication systems in this paper. Chaotic jamming signals with asymmetrical invariant distribution can be generated by applying certain nonlinear transformation to uniformly distributed chaotic time series generated based on chaotic maps. Compared with the existing jamming signal generators, the proposed chaos - based jamming generator can be easily implemented and controlled by simple structures, and can well reproduce the jamming signals in demand. Theoretical analysis and simulation results show that, the proposed chaotic jamming with Rayleigh distribution can jam QPSK and 16QAM systems more effectively compared with the Gaussian distributed jamming.
出处
《电讯技术》
北大核心
2011年第10期11-14,共4页
Telecommunication Engineering
关键词
数字通信系统
混沌映射
通信对抗
干扰
非对称不变分布
digital communication system
chaotic map
communication countermeasure
jamming
asynunetrical invariant distribution
