… This paper surveys recent advances in research related to cognitive radios. The fundamentals
of cognitive radio technology, architecture of a cognitive radio network and its applications …

… Cognitive networks are wireless networks that consist of several types of users: often a … )
and secondary users (cognitive radios). These cognitive users employ their cognitive abilities to …

… Abstract—Cognitive Radio (CR) is the enabling technology … To make radios and wireless
networks truly cognitive … , including communications theory, networking engineering, signal …

… approaches and novel technologies for cognitive wireless radio networks, covering a range
of … It comprises contributions of many prominent researchers working in the cognitive radio …

… To cope with this problem, we propose a cognitive relay network in which distributed cognitive
… By utilizing a cognitive space–time–frequency (STF) coding in the cognitive relay network, …

… cognitive wireless backbones, cognitive machine-to-machine etc. The majority of overview
works in the field of cognitive radio networks … distinguished cognitive radio networking aspect. …

Cognitive radio networks will provide high bandwidth to mobile users via heterogeneous
wireless architectures and dynamic spectrum access techniques. However, CR networks …

… in a cognitive radio (CR) network. Second, a classification of cognitive MAC protocols is
proposed. Third, advantages, drawbacks, and further design challenges of cognitive MAC …

… bands and times when a cognitive radio can transmit without causing harmful interference
to other transceivers [7]. For example, consider a cognitive radio network operating in the UHF …

… limitations of today’s Cognitive Radio Networks such as the inability to … Cognitive Radio
Network performance based only on the local interference measurements at the cognitive radio …