Study on stochastic resonance characteristic in double threshold binary array channel

A dual threshold binary array channel is constructed, and stochastic resonance phenomenon in array channel under different noise background is studied with the input output mutual information as an index. Theoretical derivation and numerical simulation show that under the four distributions of Gauss noise, Rayleigh noise, exponential noise and chi-square noise, through adjusting adequate input noise intensity, the input signal, array channel and noise reach matching and stochastic resonance is generated. And as the number of array channels increases, the resonance effect is more obvious. Finally the bit error rate under different noise background is analyzed. The bit error rate can reach the minimum value by adjusting the noise intensity.