Cognitive radio (CR) networks require reliable spectrum sensing in order to avoid
interference to the primary users of the spectrum. Most existing spectrum sensing techniques …

IEEE 802.22 is a cognitive radio-based Wireless Regional Area Network (WRAN) standard
that allows opportunistic access to idle or underutilized sub-900 MHz TV bands by …

We study the sequential energy detection problem in the context of spectrum sensing for
cognitive radio networks. We formulate a novel Sequential Energy Detector and provide a …

We study the distributed sequential energy detection problem in the context of spectrum
sensing for cognitive radio networks. We formulate a novel Doubly Sequential Energy …

In this paper, we propose a novel spectrum sensing technique, called as multi-slot spectrum
sensing, to detect spectral holes and to opportunistically use under-utilized frequency bands …

Diversos setores da atividade humana dependem da existência de serviços de
comunicações móveis. No entanto, apesar da grande procura por faixas de espectro …

Different from the MAC of IEEE 802.11, the application of IEEE 802.22 suffers the uncertain
spectrum and frequency width, which can not ensure the access of mobile users to be valid …

In cognitive radio, there might be some information about primary users' signals available at
secondary users' receivers since communications systems usually employ training signals …

The cognitive networks need the flexible utilization of the spectrum and bandwidths, without
impacting the licensed Users (also called Primary Users, PU). While the cognitive radio …

This letter presents the optimal Bartlett detector based sequential probability ratio test
(SPRT) for spectrum sensing in multi-antenna array cognitive radio networks. The optimal …