Radio frequency (RF) spectrum is highly occupied and adding further broadband channels
to fulfill the exiting user requirements has become difficult. Optical free-space …

Mixed radio frequency (RF) and free space optical (FSO) communications are a promising
alternative technology for backbone networks of next-generation wireless communications …

In recent years and in the ongoing development of all-optical systems, we propose two novel
hard-switching based hybrid RF-FSO system architecture in the presence of atmospheric …

The scintillation index of plane wave propagation in anisotropic underwater turbulence
under moderate-to-strong turbulent conditions is analyzed in this paper. A closed-form …

Reconfigurable intelligent surface (RIS) is an enabling solution to enhance the wireless
communication system performance by smartly tunning the signal reflection via a large …

In this paper, we consider a non-orthogonal multiple access (NOMA) based mixed free
space optical–radio frequency (FSO-RF) system with imperfect channel state information …

In this paper, we provide the performance analysis of free-space optical (FSO)
communication systems over Fisher-Snedecor fading channel with estimation errors in the …

The underlay cognitive radio-based hybrid radio frequency/free-space optical (RF/FSO)
systems have emerged as a promising technology due to their ability to eliminate spectrum …

Abstract Information transmission is easily affected by obstacles or other factors, which
makes it challenging to achieve perfect channel state information (CSI) and successive …

In this work, spatial diversity techniques have been proposed for free-space optical (FSO)
communication systems to combat the deteriorating effects, such as atmospheric turbulence …