Summary
International Symposium on Nonlinear Theory and its Applications
2005
Session Number:1-3-5
Session:
Number:1-3-5-4
Noise-assisted information transmission: communication channel approach
Shin Mizutani, Jun Muramatsu, Kenichi Arai, Peter Davis,
pp.102-105
Publication Date:2005/10/18
Online ISSN:2188-5079
Summary:
A threshold system is a typical system that shows noise-induced response to weak input, called stochastic resonance. When this system is considered as a digital communication channel, noiseassisted information transmission can in some cases be observed in the sense that a subthreshold binary signal can be transmitted by adding moderate noise intensity to the system. We elucidate this noise-assisted transmission by the following two steps: we show how transition probabilities are parametrized by noise intensity and then we show how mutual information between input and output signal depends on the transition probabilities. From our analysis, we can show that the appearance of noise-assisted transmission depends on the parametric path in the space of transition probabilities.