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Spectrum sensing is the most appropriate method performed by cognitive radio for the efficient utilization of RF spectrum without any harmful interference to the primary users. In this paper, we propose various spectrum sensing technique. Based on spectrum sensing, cooperative sensing is done over various spectrum sensing technique to overcome the problem of miss detection and false alarm which is...
Existing wireless networks are unable to fulfill the insatiable demand of radio spectrum by emerging wireless services and applications. To address the current spectrum scarcity problem, next generation wireless networks are required to be comprising of intelligent and reconfigurable radios (popularly known as Cognitive Radios (CRs)) that can interact with their continuously changing environment to...
In this paper, we consider the cooperative spectrum sensing when the links between primary user and CRs are subject to log-normal shadow fading and there is also noise uncertainty which is modeled as log-normal. The objective is to evaluate the performance of Equal Gain Combining (EGC) of local observations and propose a novel cluster-based algorithm to reduce the reporting channel bandwidth. In our...
Multiuser collaboration can significantly improve the performance of spectrum sensing in cognitive radio networks. By admitting the noise power estimation error and fading/shadowing effects in practical implementation, this paper presents another look at the energy detection based cooperative spectrum sensing. The worst-case collective probability of miss detection due to the noise uncertainty is...
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