Unmanned aerial vehicle (UAV)-enabled communication has emerged as an irreplaceable
technology in military, disaster relief and emergency scenarios. This correspondence …

Cooperative and cognitive non-orthogonal multiple access (CCR-NOMA) has been
recognized as a promising technique to overcome spectrum scarcity and massive …

The unmanned aerial vehicle (UAV) assisted communication can significantly improve the
coverage and spectrum efficiency of the Internet of Things (IoT). One main feature of IoT is …

To alleviate the spectrum scarcity problem in the licensed cellular networks (LCNs), we
introduce a new paradigm called cognitive multihoming (CM), where a cognitive radio (CR) …

To make best use of the various radio resources in the heterogeneous network enabled by
the software defined network or cognitive radio (CR) technology, a resource allocation …

We study the resource-allocation problem in a multiuser orthogonal frequency-division
multiplexing (OFDM)-based cognitive radio (CR) system using a cross-layer approach. The …

The massive number of Machine-Type Communication Devices (MTCDs) coexisting with
Cellular User Equipment (CUE), in addition to the diverse Quality-of-Service (QoS) …

One of the major challenges facing the realization of cognitive radios (CRs) in future mobile
and wireless communications is the issue of high energy consumption. Since future network …

The high data rates detail that internet-connected devices have been increasing
exponentially. Cognitive radio (CR) is an auspicious technology used to address the …

In this paper, the downlink ergodic resource allocation (ERA) in a relay-assisted OFDMA-
based cognitive network is considered with the objective of maximizing the average …