In the scenario of frequency coexistence between the geostationary (GEO) and non-
geostationary (NGEO) satellite networks, the NGEO system should not incur harmful …

Cognitive radio has attracted considerable attention because of its ability to make full use of
the available spectrum resources for wireless terrestrial communication networks. In …

Recently, spectrum sensing has been intensively studied as a key technology in realizing
the cognitive radio. There have been advances in the performance of spectrum sensing …

Coordinated spectrum sensing ensures Cognitive Radio systems to get the usability of every
channel within the entire spectrum of interest by assigning terminals to detect different …

In this paper we investigated the energy detection technique for spectrum sensing in
cognitive radio systems. The detection performance and the impact of the noise uncertainty …

Having the ability to provide seamless coverage and alleviate the frequency scarcity, the
cognitive satellite terrestrial network becomes a promising candidate for future …

To implement the primary signal without interference in cognitive radio systems, cognitive
radios can detect the presence of the primary user in low SNR. Currently, energy detector is …

Spectrum sensing is an indispensable technology for cognitive radio networks, which
enables secondary users (SUs) to discover spectrum holes and to opportunistically use …

The usable satellite spectrum is becoming scarce due to continuously increasing demand
for broadcast, multimedia and interactive services. In this context, cognitive satellite …

This paper considers spectrum utilization, the probability of detection in cognitive radio (CR)
model based on cooperative spectrum sensing with both simultaneous adaptive sensing …