Application of Stochastic Resonance of The SingleMode Nonlinear Optical System in Spectrum Sensing of Cognitive Radio Networks
Abstract: The cognitive radio
technology can improve the efficiency of spectrum utilization byproviding dynamic
spectrum access to unoccupied frequency bands. Spectrum sensing is one of the
key technologies of cognitive radio networks. The spectrum sensing performance
of cognitive radio networks will be greatly reduced in the low SNR environment,
especially when using energy detection. Because the stochastic resonance system
can improve the energy detection system output SNR .To improve the spectrum
sensing performance of cognitive radio networks in the low SNR environment, the
stochasticresonance of the single-mode nonlinear optical system is applied to
spectrum sensing based on theenergy detection method in this paper. The
simulation results show that in the low SNR environment, the energy detection
based on stochastic resonance of the single-mode nonlinear optical system has
better performance than traditional energy detection.
Keywords: Stochastic
Resonance, Single-mode Nonlinear Optical System, Cognitive Radio Networks, Spectrum
Sensing, Energy Detection
Author: Yonghua Wang
Journal Code: jptkomputergg150084
