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Chaotic Stochastic Resonance Energy Detection Fusion Used in Cooperative Spectrum Sensing

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1 Author(s)
Di He ; Department of Electronic and Computer Engineering, Shanghai Jiao Tong University, Shanghai, China

A cooperative spectrum-sensing technique in cognitive radio (CR) networks based on the data fusion of various chaotic stochastic resonance (CSR) energy detectors is proposed in this paper. Due to noisy uncertainty in unpredictable wireless communication environments, detection performance of conventional energy detection cannot be guaranteed. By introducing the CSR system with various CSR noise types, and with the data fusion on these CSR-based energy detectors, the detection probability can be improved under the same constant false-alarm rate (CFAR), particularly under low signal-to-noise ratio (SNR) circumstances. Theoretical analyses and computer simulation results verify the effectiveness of the proposed novel cooperative spectrum-sensing approach under serious wireless conditions.

Published in:

IEEE Transactions on Vehicular Technology  (Volume:62 ,  Issue: 2 )