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Title: Two Stage Spectrum Sensing for Cognitive Radio Using CMME
Authors: Gunichetty, N
Hiremath, S M
Patra, S K
Keywords: Cognitive radio
Eenergy detection
Probability of detection
Two-stage spectrum sensing
Issue Date: Apr-2015
Publisher: IEEE
Citation: 4th IEEE International Conference on Communication and Signal Processing-ICCSP'15, Melmaruvathur, Tamilnadu, India, 2nd, 3rd & 4th April 2015
Abstract: Spectrum sensing is fundamental functionality in Cognitive Radio (CR) to identify spectral white spaces for opportunistic communication. Around last decade thorough study of spectrum sensing suggests that traditional energy detection (ED) performance is better and fast at high SNR and worst in low SNR, whereas cyclo-stationary and Eigenvalue based methods perform better at low SNR, but implementation complexity is high. As suggested in IEEE 802.22 standard for CR, we propose in this paper, novel two stage spectrum sensing based on energy detection as coarse sensing first stage and combination of maximum-minimum eigen value based detection technique (CMME) as fine sensing second stage. The dual stage threshold parameter is designed to maximize the probability of detection for given constraints on the probability of false alarm. Comparative analysis of single stage ED, Cyclostationary detection (CSD), Combination of maximum-minimum eigen value detection (CMME), Combination of Cyclostationary detection and ED detection and Combination of CMME and ED detection is performed using probability detection versus SNR curve.
Description: Copyright belongs to proceeding publisher
Appears in Collections:Conference Papers

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