The emerging need for high data rate, low latency, and high network capacity encourages
wireless networks (WNs) to build intelligent and dynamic services, such as intelligent …

In this paper, a novel reconfigurable intelligent surface (RIS)-assisted HAP-UAV secure multi-
user mixed radio frequency (RF)/free space optical (FSO) system is proposed. Specifically …

With the rapid advancements in wireless technology, the incorporation of unmanned aerial
vehicles (UAVs) in free space optical (FSO) communication can reap several benefits …

In order to meet the demands of diverse services within sixth-generation networks across a
range of industries, numerous approaches are being employed to address notable signal …

In the sixth-generation (6G) Internet of Things (IoT) networks, unmanned aerial vehicle
(UAV)-mounted base stations and reconfigurable intelligent surfaces (RISs) have been …

In the next generation (6G) wireless networks, the integration of terrestrial and non-terrestrial
networks is essential to provide flawless connectivity over the globe. The vital element of this …

In this article, we study the physical layer security performance of a downlink space–air–
ground-integrated network (SAGIN), where a satellite communicates with the ground …

In this paper, an improved adaptive coding and modulation scheme with hybrid switching
standard is proposed for UAV-to-Ground free space optical (FSO) communication to mitigate …

In this paper, we aim at tackling the security performances of dual-hop mixed free-space
optical (FSO)/radio frequency (RF) cooperative with the non-orthogonal multiple access …

In this paper, we investigate the physical-layer security performance for a reconfigurable
intelligent surface (RIS) assisted free-space optical (FSO) communication-radio frequency …