Enhanced 5G spectrum sharing using a new adaptive NC-OFDM waveform with reconfigurable antennas

Cognitive radio (CR) is an innovative technology that supports dynamic spectrum access to utilise the spectrum more efficiently in an opportunistic manner without interfering with the licensed users. Multi‐carrier modulation techniques such as orthogonal ...

In cognitive radio networks, Secondary Users SUs can access the spectrum simultaneously with the Primary Users PUs in underlay mode. In this case, interference caused to the licensed users has to be effectively controlled. The SUs have to make spectrum ...

Cognitive radio (CR) networks employing dynamic spectrum access have been proposed in the framework of enabling 5G wireless networks to enhance efficient use of spectrum resources. Communication requirements with regard to spectrum in 5G networks demand ...