Selective Cooperative Spectrum Sensing in Cognitive Radio Networks

This article proposes a novel Cooperative Spectrum Sensing (CSS) scheme for Cognitive Radio Networks (CRN). The proposed scheme, referred to as the Selective Cooperative Spectrum Sensing (SCSS) scheme, is capable of jointly reducing the reporting overhead and mitigating faulty reporters at the Base Station (BS). These goals are achieved by exclusively using reliably taken and delivered reports from the individual nodes to the BS. Two conditions are used to guarantee this, one on the detection reliability while the other is on the reporting reliability. These two conditions are designed to offer flexible performance, complexity and overhead tradeoff. The performance of SCSS is studied analytically and using simulations. Results show performance enhancements compared to conventional CSS schemes.