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2010
IEEE

High-Diversity Cooperative Spectrum Sensing in Cognitive Radio Networks

9 years 9 months ago
High-Diversity Cooperative Spectrum Sensing in Cognitive Radio Networks
This paper develops a cooperative scheme among cognitive radios (CRs) to increase the spectrum sensing performance. CRs adaptively transmit local binary decisions to a fusion center (FC), which in turn uses a simple maximumlikelihood detector to decide the presence of absence of the primary user (PU). The diversity order of the probability of false alarm and miss-detection is studied under both Neyman-Pearson and minimum-error-probability criteria. In particular, it is shown that under the Neyman-Pearson criterion, the probability of missdetection can achieve diversity order up to the number of CRs for a bounded probability of false alarm. Under the minimumerror-probability criterion, both the probability of false alarm and miss-detection can achieve diversity order up to the number of CRs. Compared to existing cooperative sensing approaches, this novel scheme is robust to fading effects in both PU-to-CR and CRto-FC links. Simulated tests verify the analytical claims, showing considera...
Guobing Li, Alfonso Cano, Shihua Zhu
Added 02 Mar 2011
Updated 02 Mar 2011
Type Journal
Year 2010
Where GLOBECOM
Authors Guobing Li, Alfonso Cano, Shihua Zhu
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