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Accurate spectrum sensing is very important for cognitive radio systems. In the cooperative spectrum sensing, the unreliable nodes will result in deterioration of detection performance. This paper focuses on the spectrum sensing in the case of unreliable nodes and proposes a weighted reliability cooperative spectrum sensing algorithm. In the algorithm, the global fusion center only chooses the cognitive...
In the cooperative spectrum sensing, the bad channel environment where there are a few of malicious nodes, often results in deterioration of detection performance. This paper focuses on the spectrum sensing in the case malicious nodes and proposes an accumulated credibility-based weighted cooperative spectrum sensing algorithm. In the algorithm, the global fusion center weights the local detection...
Cooperative spectrum sensing is a key technology to tackle the challenges such as fading or hidden terminal problem in local spectrum sensing of cognitive radio system. Conventional cooperative method can improve the detection performance in some sense, but increase overhead of control channel. In order to reduce the overhead, a new cooperative spectrum sensing algorithm based on confidence level...
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