Reliable and efficient identification of spectrum access opportunities is crucial for cognitive
radio ad hoc networks (CRAHNs). A promising method to improve sensing reliability is CSS …

In this thesis, we focus on both internal and external sensing in Cognitive Radio (CR)
networks. In internal sensing, individual CRs discover spectrum opportunities via spectrum …

In Cognitive Radio Ad Hoc Networks (CRAHNs), cooperative spectrum sensing schemes
exploit spatial diversity of the Secondary Users (SUs), to reliably detect an unoccupied …

With the advancement of the Internet of Things (IoT), conventional principles of spectrum
allocation cannot mitigate spectrum depletion so that a cognitive radio technology is …

Spectrum sensing is of crucial importance in cognitive radio (CR) networks. In this paper, a
reliable spectrum sensing scheme is proposed, which uses K‐nearest neighbor, a machine …

The detection of active Primary Users (PUs) in practical wireless channels with a single
Cognitive Radio (CR) sensor is challenging due to several issues such as the hidden node …

A Bayesian data-mining approach is introduced for dynamic spectrum sensing in spectrum-
heterogeneous cognitive radio networks. The goal is to find the spectrum opportunities in …

Spectrum sensing plays an essential role in the detection of unused spectrum whole in
cognitive radio networks, including cooperative spectrum sensing (CSS) and independent …

Cooperative spectrum sensing significantly improves sensing reliability in cognitive radio
networks. However, in large-scale secondary networks, spectrum availability is …

In a spectrum overlay system, the secondary users (SUs) with cognitive radio capability
need to detect the presence of primary users promptly and reliably in order to prevent …