Noise tuning in stochastic systems

Citation
B. Ando et S. Graziani, Noise tuning in stochastic systems, INT J ELECT, 87(6), 2000, pp. 659-666
Citations number
14
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
INTERNATIONAL JOURNAL OF ELECTRONICS
ISSN journal
00207217 → ACNP
Volume
87
Issue
6
Year of publication
2000
Pages
659 - 666
Database
ISI
SICI code
0020-7217(200006)87:6<659:NTISS>2.0.ZU;2-H
Abstract
Noise-added systems present interesting features in many application fields and terms such as stochastic resonance and dithering are becoming more com mon. The main problem in dealing with noise-added systems is the identifica tion of the optimal value of the noise variance as a function of system par ameter fluctuations. In a previous work the authors introduced a theoretica l relationship attesting the dependence of the noise variance on some forci ng signal parameters. This relationship was used to preserve optimal system performance as the input signal characteristics change. In this paper both a numerical and a hardware solution for the implementation of the above-me ntioned relationship are proposed. More specifically, both a virtual instru ment and an analogue device implementing noise variance control are propose d.