This paper considers secure communications for an underlay cognitive radio network (CRN)
in the presence of an external eavesdropper (Eve). The secrecy performance of CRNs is …

This paper investigates the physical layer security issue in an unmanned aerial vehicle
(UAV) aided cognitive radio network. Specially, a UAV operates as an aerial secondary …

Cognitive radio is a promising technology to improve spectral efficiency. However, the
secure performance of a secondary network achieved by using physical layer security …

In this paper, physical layer security is considered for cognitive radio networks using an
unmanned aerial vehicle (UAV)-enabled jamming noise. In the studied model, a secondary …

Unmanned aerial vehicles (UAVs) have been recently applied to improve physical-layer
security in wireless communication networks. This work considers a cognitive relay network …

Unmanned aerial vehicles (UAVs) are envisioned as a promising means of providing
wireless services for various complex terrains and emergency situations. In this paper, we …

Unmanned aerial vehicles (UAVs) have attracted growing interest in wireless
communications due to their several superiorities, such as highly controllable mobility …

Owing to their intrinsic advantages of seamless coverage and of high data rate, space-air-
ground communications networks (SAGCN) are recognized as one of the emerging …

In this paper, we consider an energy-constrained unmanned aerial vehicle (UAV)-enabled
mobile relay assisted secure communication system in the presence of a legitimate source …

Secure communication technology has attracted more and more attention to improve the
security of the Internet of Things (IoT). In this article, we discuss the maximum secrecy …