非线性转移函数对滤波器结构混沌信号周期特性的改善
NONLINEAR TRANSFER FUNCTION IMPROVING THE PERIOD PROPERTY OF (QUASI-)CHAOTIC DIGITAL FILTERS
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摘要: 通过零输入和有输入状况下具有混沌特性的非线性数字滤波器输出信号周期的对比,本文提出添加非线性转移函数来改善非线性滤波器输出序列的性能。数值结果表明,输出序列的周期有显著改善,相关特性优良。此结构便于数字电路实现,有利于产生的混沌序列在数字通信中应用。
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关键词:
- 混沌; 数字滤波器; 非线性转移函数
Abstract: In this paper, a method to improve the period property of (quasi-)chaotic digital filters by inserting a nonlinear transfer function is presented. Simulation results show that the resulted chaotic sequences have siginificantly increased periods while still preserving good correlation. Moreover, the structure is well suited to be realized in digital hardware and is thus attractive for applications to digital communications. -
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