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In cognitive networks, cognitive radios utilize spectrum sensing technology to avoid interference to primary users. There are two important factors associated with spectrum sensing: detection probability and false alarm probability. The higher the detection probability, the better the primary users are protected. On the other hand, for cognitive radios the lower the false alarm probability, the more...
In the distributed Cognitive Radio Networks, routing should consider how to dynamically select frequency band for either per flow throughput guarantee or global spectrum utilization. Since different second users may sense different spectrum availability, efficiently sharing this information in the dynamic spectrum environment still remains challenging, however, collaborative route and spectrum selection...
Cognitive radio (CR) is proposed as a promising solution to resolve the spectrum resource scarcity. The premise to implement CR is not to introduce harmful interference to the licensed users (LU). This constraint makes interference estimation becoming very important. In this paper, we perform a quantitative analysis of theaggregation interference at the LU's receiver. We develop two multi-cell models...
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