Title :
High signal-to-noise ratio gain by stochastic resonance in an unconventional bistable system
Author :
Wan, Pin ; Zhan, Yiju ; Zheng, Hui
Author_Institution :
Fac. of Autom., Guangdong Univ. of Technol., Guangzhou, China
Abstract :
We report that the signal-to-noise ratio (SNR) can be improved by the stochastic resonance (SR) in an unconventional bistable system. The system is driven by Gaussian white noise and a sinusoidal signal, and studied by using the second-order Runge-Kutta method. We find that the SNR and the SNR gain exhibit the stochastic resonance behavior, and the SNR gain greatly exceeds unity on some occasions. This result is the latest development of the unconventional bistable stochastic resonance, and has potential applications in the signal detection, processing and communications.
Keywords :
AWGN; Runge-Kutta methods; signal processing; stochastic processes; Gaussian white noise; bistable stochastic resonance; bistable system; second-order Runge-Kutta method; signal communications; signal detection; signal processing; signal-to-noise ratio; sinusoidal signal; Nonlinear optics; Optical bistability; Signal detection; Signal to noise ratio; Stochastic resonance; Strontium; SNR gain; nonlinearity; numerical simulation; unconventional bistable stochastic resonance;
Conference_Titel :
Computer Science and Automation Engineering (CSAE), 2011 IEEE International Conference on
Conference_Location :
Shanghai
Print_ISBN :
978-1-4244-8727-1
DOI :
10.1109/CSAE.2011.5952931
