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为了探讨随机谐振现象的发生对信号、非线性系统和噪音的依赖性,特别是对噪音的依赖性,以互信息量为测度研究了二进制信号在非线性门限阵列的传输问题.在高斯混合噪音下计算了单门限系统和门限阵列的互信息量.通过研究得到:高斯混合噪音能改善信息的传输;随机谐振和超门限随机谐振现象不但在单门限系统中而且在门限阵列中存在;噪声分布中的参数影响随机谐振和超门限随机谐振现象的出现;随着门限阵列中门限单元数的增加,门限阵列能大大地改善信息的传输效果.这些结果进一步说明随机谐振和超门限随机谐振现象对噪声分布特性的依赖,同时也拓展了随机谐振和超门限随机谐振在信息传输中的应用.
In order to study the dependence of signal, nonlinear system and noise on the occurrence of stochastic resonance, especially on the noise, the transmission of binary signal in non-linear threshold array is studied by using the mutual information as a measure.The Gaussian mixture noise The mutual information between single-threshold system and threshold array is calculated.The Gaussian mixture noise can improve the information transmission.The stochastic resonance and the hyper-threshold stochastic resonance not only exist in the single-threshold system but also in the threshold array. The noise distribution The parameters in this paper influence the appearance of stochastic resonance and hyper-threshold stochastic resonance phenomenon.With the increase of the number of threshold cells in the threshold array, the threshold array can greatly improve the information transmission effect.These results further show that the stochastic resonance and hyper-threshold random resonance phenomenon Noise distribution characteristics of the dependence, but also expanded the random resonance and ultra-threshold random resonance in information transmission applications.