Noise Enhanced Propagation

Andrew Kuck

Noise Enhanced Propagation (NEP) was studied in a linear array of locally coupled bistable oscillators using a distributed Macintosh computer simulation. The scaling of optimal noise variance and maximum signal propagation length with respect to coupling strength and potential barrier height were examined. For sufficiently large barrier heights, the optimal noise was proportional to the height, while the propagation length was inversely proportional to the height. The impact of the non-ideal band-limited white noise was examined, as well as the impact of filtering the output signal. Both had a predicted, minor impact on the resulting data. The optimal noise and the propagation length were found to be proportional to the square root of the coupling strength, in agreement with previous research. The relationships indicated that near zero height NEP still occurred, although a direct measurement with a monostable potential was unable to confirm this.