WSEAS Transactions on Signal Processing
Print ISSN: 1790-5052, E-ISSN: 2224-3488
Volume 12, 2016
Performance Evaluation for the Two-Stage Cooperative Spectrum Sensing Scheme in Cognitive Radio
Authors: , , , , ,
Abstract: In order to obtain more precise spectrum sensing performance in cognitive radio networks, a two-stage spectrum sensing approach is investigated. More specifically, a coarse spectrum sensing based on energy detection is introduced in the first stage. When the sensing decision is idle channel by coarse sensing, a fine spectrum sensing based on first order cyclostationary feature detection is exploited in the second stage. Moreover, the problem formulation and discussion of two-stage spectrum sensing is presented. Optimization algorithm is to maximize the throughput under the probability of error sensing constraint. Numerical results show that the sensing performance is improved significantly as opposed to conventional one stage spectrum sensing.
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Keywords: cognitive radio, two-stage spectrum sensing, performance evaluation, energy detection, first order cyclostationary feature detection
Pages: 68-73
WSEAS Transactions on Signal Processing, ISSN / E-ISSN: 1790-5052 / 2224-3488, Volume 12, 2016, Art. #9