A Novel Spectrum-Sensing Technique in Cognitive Radio Based on Stochastic Resonance

We propose a novel spectrum-sensing method for cognitive radio (CR) based on stochastic resonance (SR). The spectral power of primary users (PUs) can be amplified, and the signal-to-noise ratio (SNR) of a received signal can be increased using SR. This ensures that the detection probability of the p...

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Bibliographic Details
Published in:IEEE transactions on vehicular technology 2010-05, Vol.59 (4), p.1680-1688
Main Authors: He, Di, Lin, Yingpei, He, Chen, Jiang, Lingge
Format: Article
Language:English
Subjects:
Amplification
Chromium
Cognitive radio
Cognitive radio (CR)
Computational complexity
Computational efficiency
Computer simulation
Computer vision
Detectors
energy detection
Energy use
Radio
Signal to noise ratio
Spectra
spectrum sensing
Stochastic resonance
stochastic resonance (SR)
Strontium
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Summary:We propose a novel spectrum-sensing method for cognitive radio (CR) based on stochastic resonance (SR). The spectral power of primary users (PUs) can be amplified, and the signal-to-noise ratio (SNR) of a received signal can be increased using SR. This ensures that the detection probability of the proposed approach is higher than that of the traditional energy detector. The detection probability of the proposed method is also theoretically derived under a constant false-alarm rate (CFAR). Performance analyses and computer simulation results show that the effectiveness of the proposed SR-based spectrum-sensing approach, particularly under low SNR circumstances, is better than that of the traditional energy-detection method. The computational complexity of the proposed approach can also be guaranteed to be comparable with the traditional spectrum-sensing methods.
ISSN:0018-9545
1939-9359
DOI:10.1109/TVT.2010.2042311