Due to their numerous advantages, communications over multicarrier schemes constitute an
appealing approach for broadband wireless systems. Especially, the strong penetration of …

There is a growing demand for 5G applications in all fields of knowledge. Current
applications, such as the Internet of Things, smart homes, and clean energy, require …

A filter-bank multicarrier-quadrature amplitude modulation (FBMC-QAM) system with two
prototype filters for transmitting QAM symbol is proposed, and the orthogonality conditions …

The definition of the next generation of wireless communications, so-called 5G networks, is
currently underway. Among many technical decisions, one that is particularly fundamental is …

Cognitive radio wireless sensor networks (CR-WSNs) are a type of WSNs that use cognitive
radio technology to enhance the spectrum utilization and energy efficiency. This paper …

In this paper, we consider a broadband cognitive radio wireless sensor network operating in
a crowded spectrum scenario, where a sensor transmitter (ie, a sensor node that needs to …

In this letter, the problem of resources allocation in decode-and-forward (DF) relayed OFDM
based cognitive system is considered. The dual decomposition technique is adopted to …

Multicarrier waveforms have been commonly recognized as strong candidates for cognitive
radio. In this paper, we study the dynamics of spectrum sensing and spectrum allocation …

Cognitive radio systems allow opportunistic secondary users (SUs) to access portions of the
spectrum that are unused by the network's licensed primary users (PUs), provided that the …

Future 5G networks will serve a variety of applications that will coexist on the same spectral
band and geographical area in an uncoordinated and asynchronous manner. It is widely …