Cognitive radio terminals sense the spectrum to detect temporarily unoccupied spectrum
gaps and transmit. The behavior of a network of cognitive radio terminals therefore depends …

The dynamic spectrum access is a concept opposite to static frequency spectrum
assignment and one of the key elements of cognitive radio (CR). It allows secondary users to …

Cognitive Radio (CR) is aimed at increasing the efficiency of spectrum utilization by allowing
unlicensed users to access, in an opportunistic and non-interfering manner, some licensed …

Owing to the opportunistic nature of the Dynamic Spectrum Access (DSA) paradigm based
on the Cognitive Radio (CR) concept, the behaviour and performance of DSA/CR systems …

With ever-increasing traffic demand, the availability of large spectrum space with its efficient
use is a necessity of future wireless communication. Under the current system of static …

Despite its practical performance limitations, energy detection has gained popularity during
the last years as a spectrum sensing technique for dynamic spectrum access in cognitive …

Dynamic spectrum access (DSA) has been proposed as a solution to the spectrum scarcity
problem. However, the models for spectrum use, that are commonly used in DSA research …

In cognitive radio (CR) networks, the role of spectrum sensing (SS) is crucial to enable an
efficient exploitation of the radio spectrum resource. The need to measure spectrum …

This paper describes the development, deployment and early results of a long-term, wide-
band (30 MHz-6 GHz) spectrum observatory system focused on downtown Chicago and the …

With the higher demanding of radio frequency resources in wireless networks, spectrum
management has been a politically as well as a technically sensitive issue. It is usually …