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Spectrum sensing is the fundamental technology of Cognitive Radio (CR). This paper proposes a novel multiple-antenna based spectrum sensing method with random arrivals of primary users (PUs). The method first constructs a local test statistic for each antenna based on the assumption that the PU is randomly arriving, and then calculates the estimated optimum coefficient for every local test statistic...
This paper proposes a practical sensing node selection for cooperative spectrum sensing in a cognitive radio network, where malicious users could falsify sensing data. Previously reported sensing node selection techniques are applicable to scenarios where sensing nodes are assumed to send reliable reports, and do not have the mechanisms to check their trustworthiness. In this paper we propose a robust...
In this paper, an Opportunity Spectrum Access (OSA) strategy for multiuser was proposed. Assuming each CR user only can sense one channel at a time due to hardware restraints. And they only can sense one time during a slot time. The idle probability of each channel is predicted by the POMDP framework. If all CR users use the same OSA strategy with deterministic POMDP framework, collision will happen...
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