Security is a challenging issue for cognitive radio (CR) to be used in future 5G mobile
systems. Conventionally, interference will degrade the performance of a primary user (PU) …

In this paper, we study covert communication in wireless networks consisting of a transmitter,
Alice, an intended receiver, Bob, a warden, Willie, and a Poisson field of interferers. Bob and …

This paper develops a tractable analysis framework to evaluate the reliability and security
performance of cooperative non-orthogonal multiple access (co-NOMA) in cognitive …

With the exponential increase of interconnected communicating devices which make up the
Internet of Things (IoT), securing the network transmission and the fifth generation (5G) …

Spectrum efficiency (SE) and energy efficiency (EE) in secure communications have
attracted much attention recently due to the fact that future wireless networks need to …

In this paper, we investigate the covert communications in an overlay cognitive radio (CR)
network, where multiple secondary transmitters (STs) opportunistically send confidential …

The cognitive radio network (CR) is a primary and promising technology to distribute the
spectrum assignment to an unlicensed user (secondary users) which is not utilized by the …

In this paper, we consider a centralized cooperative cognitive radio network (CCRN), where
a primary base station sends a message to a primary user. Meanwhile, a secondary user …

To meet ever-increasing mobile data traffic demands for next-generation wireless
communication systems, the plentiful spectrum resources in millimeter wave (mmWave) …

Energy-efficient and secure wireless communications have recently earned tremendous
interests due to economic, environmental, and military concerns. This paper investigates the …