非周期随机共振抑噪应用研究

Application of Aperiodic Stochastic Resonance in Noise Suppression

研究了噪声和随机二进制信号同时激励双稳系统时的输出响应 ,并测量了输入输出互相关系数。结果表明 ,随机共振并不限于周期信号 ,对于非周期信号也广泛存在。利用双稳系统中的非周期随机共振效应 ,可以减小随机信号传输中的噪声水平 ,改善输出信号质量 ,这在数字通信领域具有十分重要的意义。

The nonlinear response in the bistable system with a random binary signal by adding the variable amount of noise is studied, and the input-output cross-correlation coefficient is measured. Results indicate that stochastic resonance (SR) is occurred to be aperiodic and not confined to periodic signals. Aperiodic SR (ASR) effect in the bistable system can be used for reducing the noise level of random signal transmission and improving the quality of output signal.