Cognitive radio enabled small cell network is an emerging technology to address the
exponential increase of mobile traffic demand in next generation mobile communications …

Green cognitive radios show promise for high energy efficiency (EE) in the future of wireless
communications. Spectrum sensing refers to an energy-consuming procedure that allows …

Traditional spectrum sensing methods require that a secondary user (SU) senses the
spectrum at the beginning of each time slot. A closer look at the network activities of a …

In cognitive radio (CR) networks, cooperation can greatly improve the spectrum sensing
performance. However, more energies are required in the local spectrum sensing and …

In this paper, an energy-efficient scheme is proposed for cooperative spectrum sensing in
cognitive sensor networks. In our scheme, we introduce a technique to select the sensing …

High-data-rate mobile multimedia applications can greatly increase energy consumption,
leading to an emerging trend of addressing the “energy efficiency” aspect of mobile …

In this paper, the joint spectrum sensing and resource allocation problem is investigated in a
multi-band-multiuser cognitive radio (CR) network. Assuming imperfect spectrum sensing …

In this paper, we consider heterogeneous cognitive radio networks (CRNs) comprising
primary channels (PCs) with heterogeneous characteristics and secondary users (SUs) with …

This paper studies energy-efficient power allocation schemes for secondary users in
sensing-based spectrum sharing cognitive radio systems. It is assumed that secondary …

User cooperation for spectrum sensing in cognitive radios has been proposed in order to
improve the overall performance by mitigating multi-path fading and shadowing experienced …