To compensate for the deficiencies of low spectrum efficiency (SE) and scarce spectrum
resources in Radio Frequency (RF), the FSO/THz-RF dual-hop downlink based on Non …

Free space optical (FSO) communication system is a groundbreaking technology in the field
of communication systems. Non-orthogonal multiple access (NOMA), on the other hand …

Optical wireless networks, particularly free-space optical (FSO) in outdoor environments and
visible light communication (VLC) in indoor environments, suffer from severe deterioration in …

Non-orthogonal multiple access (NOMA) is a better multiple access technique than
orthogonal multiple access (OMA), precisely orthogonal frequency division multiple access …

The hybrid combination between underwater optical wireless communication (UOWC) and
radio frequency (RF) is a vital demand for enabling communication through the air–water …

This paper investigates the performance analysis of dual-hop free-space optical/radio
frequency (FSO/RF) communication systems. In this system, we study aims to improve users' …

Non-orthogonal multiple access (NOMA) is a promising technique to improve the spectral
efficiency. To exploit the benefits of NOMA in underwater optical wireless communication …

Non-orthogonal multiple access (NOMA) has the potential to provide higher throughput than
conventional orthogonal multiple access (OMA), which has been considered as a key …

In this paper, a multipoint-to-point system consisting K users and a central node over
wireless optical communication (WOC) channel is analyzed. The scenario focused on is that …

In this paper, we consider a relay-assisted uplink non-orthogonal multiple access (NOMA)
system. In this system, two radio frequency (RF) users are grouped for simultaneous …