2019/02/22 by Yusuf Said Eroglu, Eroglu, Yusuf Said, Chethan Kumar Anjinappa +5
Engineering · #Advanced Photonic Communication Systems #Advanced Wireless Communication Technologies #FOS: Electrical engineering #Optical Wireless Communication Technologies #Signal Processing (eess.SP) #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.1902.09429
openalex publication_date 2019/02/22 · openalex created_date 2022/07/29 · openalex updated_date 2026/07/28
Visible light communication (VLC) is an emerging technology that enables\nbroadband data rates using the visible spectrum. In this paper, considering\nslow beam steering where VLC beam directions are assumed to be fixed during a\ntransmission frame, we find the steering angles that simultaneously serve\nmultiple users within the frame duration and maximize the data rates. This is\nachieved by solving a non-convex optimization problem using a grid-based search\nand majorization-minimization (MM) procedure. Subsequently, we consider\nmultiple steerable beams with a larger number of users in the network and\npropose an algorithm to cluster users and serve each cluster with a separate\nbeam. We optimize the transmit power of each beam to maximize the data rates.\nFinally, we propose a non-orthogonal multiple access (NOMA) scheme for the beam\nsteering and user clustering scenario, to further increase the data rates of\nthe users. The simulation results show that the proposed beam steering method\ncan efficiently serve a high number of users, and with power optimization, a\ndata rate gain up to ten times is possible. The simulation results for NOMA\nsuggests an additional 10 Mbps sum rate gain for each NOMA user pair.\n