M-ary Suprathreshold Stochastic Resonance in Multilevel Threshold Systems
CHEN Nan1, WANG Youguo1, ZHAI Qiqing2
1.College of Science, Nanjing University of Posts and Telecommunications, Nanjing 210046, China; 2.College of Telecommunications & Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
Abstract：In this paper, through the establishment of model and numerical calculation based on mutual information, it is found that under the certain intensityof both additive noise and multiplicative noise, themultilevel threshold system appears suprathreshold stochastic resonance phenomenon. Increasing the value of threshold orthe number of units is more likely to make the system appear suprathreshold stochastic resonance phenomenon.But the increase of the value of threshold will weaken the effect of information transmission in the system. When the noise intensity is weak, increasing the number of output elements of each unit can improve the transmission of information in the system. However, if the number of output elements of each threshold unit is too high, the suprathreshold stochastic resonance phenomenon in the system will disappear, and the value of mutual informationalso will tends to be saturated.
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