The goal of spectrum sensing is to elevate the detection performance of secondary users
(SUs) in a cognitive radio network (CRN). In cooperative spectrum sensing, all secondary …

Nowadays vehicular communication has become a widespread phenomenon, which will
cause spectrum scarcity. By utilizing the cognitive radio in vehicular communication can be …

Wireless networks are burdened with the demand of providing higher data rates for the user
devices connected to the wireless networks. This demand presents a huge challenge for the …

In Cognitive Radio Networks, secondary users have access to the channel Opportunistically.
So, it must be ensured that the severe interference, that damages the main network, does …

A novel scheme to enhance the spectral efficiency (SE) for an underlay cognitive radio
system (UCRS) is proposed. A cross-layer optimization (CLO) of both the physical layer …

Interference is the primary limiting factor of Cognitive Radio (CR) systems. This paper
proposes a new power allocation idea for orthogonal frequency division multiplexing …