In this work, a reconfigurable intelligent surface (RIS)-aided millimeter wave (mmWave)
multiple-input multiple-output (MIMO) cognitive radio (CR) downlink operating in the …

Dense heterogeneous networks (HetNets) have recently emerged as a promising paradigm
to fulfill the ever increasing demand for huge capacity of wireless communication systems …

Recently, a cooperative cognitive radio network (CCRN) and multiple-input multiple-output
(MIMO) cognitive radio (CR) network have been proposed and investigated individually as …

Fifth-generation (5G) network demands of higher data rate, massive user connectivity and
large spectrum can be achieve using Sparse Code Multiple Access (SCMA) scheme. The …

We consider the problem of secondary user access control (SUAC) in cognitive radio (CR)
networks with the massive multiple-input multiple-output (MIMO) technique, where a primary …

Future networks, particularly the fifth generation, expected to receive excessive statistics and
data rates, with reduced latency/redundancy with better spectrum usage and better …

Energy and spectrum optimization for massive multiple input multiple output (MIMO)
cognitive femtocell based fifth generation (5G) mobile network is developed using auction …

In the past few years, fundamental research has demonstrated great potentials of cognitive
radio (CR) in increasing the spectrum agility and system capacity of wireless …

The continuous evolution of wireless communication technology has developed many new
paradigms like IOT, M2M communication and 5G. Due to the continuous deployment of …

In this paper, a joint pilot and data power allocation problem with max-min fair energy
efficiency (EE) guarantee in the uplink massive multiple-input multiple-output cognitive radio …