Cognitive radio networks (CRNs) are acknowledged for their ability to tackle the issue of
spectrum under-utilization. In the realm of CRNs, this paper investigates the energy …

Physical-layer security (PLS) is examined in this paper for an underlay cognitive radio
network (CRN). Two secondary users (SUs) interact through a relay that is equipped with …

Covert communication aims to enhance the security of the wireless communication by hiding
the transmission behavior from the eavesdropper. In this paper, a spectrum mask-based …

In this study, the cascaded double κ− μ shadowed fading model is mathematically
introduced. A novel expression is obtained for the cumulative distribution function (CDF) of …

In recent years, the access of massive communication devices leads to the insufficient
spectrum resources of wireless networks. One of the practical means to resolve the problem …

This paper investigates the intercept probability (IP) performance for a dual-hop multi-
secondary user (SU) underlay cognitive-radio networks. Whereby, the relay R is self …

The popular small satellites already attracted attention towards the integration into the future
ubiquitous Internet of Things (IoT) networks. Small satellites can act as IoT base stations to …

This paper investigates the physical-layer security (PLS) for an overlay cognitive radio
network (CRN). Due to the unreliability of direct communication between the primary users …

The fifth-generation (5G) communications and beyond are expected to serve a huge number
of devices and services. However, due to the fixed spectrum allocation policies, the need for …

Due to the pace of various emerging wireless communication technologies and new
application services innovation, network information security, and capacity requirements …