Abstract Spectrum Sensing schemes in Cognitive Radio systems are fundamental elements
for a complete opportunistic communication technology. They usually reveal the presence of …

Owing to the opportunistic nature of its operation principle, the performance of Dynamic
Spectrum Access/Cognitive Radio (DSA/CR) systems depends on the spectrum occupancy …

The growing demand for available frequency bands in contrast to the scarcity of allocated
spectrum slots, is promoting the development of smart wireless transmission terminals …

As the lack of frequency resources became a critical problem in recent years, solutions had
to be found in order to use the available spectrum in a more efficient way. Cognitive radio …

Spectrum sensing is a fundamental task in the complex field of cognitive radio systems. It
allows a cognitive terminal to scan a frequency span of interest and sense the presence of …

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 radios represent a promising technique to address the problem of efficient
spectrum utilisation. However, their performance is limited by their capability to sense the …

Spectrum sensing has been identified as a key enabling cognitive radio (CR) to not interfere
with primary users, by reliability detecting primary users' signals. Based on the …

Cognitive radios (CR) are regarded as a viable solution to enabling flexible use of the
frequency spectrum in future generations of wireless systems by taking advantage of …

Future wireless communications systems are expected to be extremely dynamic, smart and
capable to interact with the surrounding radio environment. To implement such advanced …