2020/07/24 by Shimaa Naser, Lina Bariah, Naser, Shimaa +11
Engineering · #Advanced Wireless Communication Technologies #FOS: Electrical engineering #Optical Wireless Communication Technologies #PAPR reduction in OFDM #Signal Processing (eess.SP) #Systems and Control (eess.SY) #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2007.13560
openalex publication_date 2020/07/24 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The increased proliferation of connected devices requires a paradigm shift\ntowards the development of innovative technologies for the next generation of\nwireless systems. One of the key challenges, however, is the spectrum scarcity,\nowing to the unprecedented broadband penetration rate in recent years. Visible\nlight communications (VLC) has recently emerged as a possible solution to\nenable high-speed short-range communications. However, VLC systems suffer from\nseveral limitations, including the limited modulation bandwidth of\nlight-emitting diodes. Consequently, several multiple access techniques (MA),≠.g., space-division multiple access (SDMA) and non-orthogonal multiple access\n(NOMA), have been considered for VLC networks. Despite their promising\nmultiplexing gains, their performance is somewhat limited. In this article, we\nfirst provide an overview of the key MA technologies used in VLC systems. Then,\nwe introduce rate-splitting multiple access (RSMA), which was initially\nproposed for RF systems and discuss its potentials in VLC systems. Through\nsystem modeling and simulations of an RSMA-based two-use scenario, we\nillustrate the flexibility of RSMA in generalizing NOMA and SDMA, as well as\nits superiority in terms of weighted sum rate (WSR) in VLC. Finally, we discuss\nchallenges, open issues, and research directions, which will enable the\npractical realization of RSMA in VLC.\n