Investigation of non orthogonal multiple access in 5g communication using li fi wi fi technology

Abstract

Various wireless users and applications have a high demand for newlinebandwidth and power, and light-fidelity (Li-Fi)-based technologies are now newlinebeing developed to meet this demand. In the field of visible light networking, newlinehybrid networks based on Wi-Fi and Li-Fi have recently appeared. It is built newlineon the idea of combining small cell Li-Fi networks with large-area Radio newlineFrequency (RF) communication. The access links for bidirectional data newlinetransmission use shared bandwidth since the wireless backhaul link operates newlinein the visible light spectrum. Due to RF spectrum scarcity, Wi-Fi Access newlinePoint (AP) bandwidth and Li-Fi AP coverage are restricted in the outdoor newlinesetting. To address this problem a swarm intelligence-based improved cuckoo newlinesearch algorithm has been proposed. Bidirectional visible light transmission newlinewith Non-Orthogonal Multiple Access (NOMA) was used in the proposed newlineapproach, which is an important approach for fifth-generation wireless newlinenetworks. With the same frequency and different power levels, the NOMA newlinewill assist multiple users at the same time. The dynamic frequency reuse newlinescheme improves device throughput and spectral efficiency. To demonstrate newlineits effectiveness, the simulation results are compared to traditional newlinetechniques. In recent years, a plethora of flexible Internet of Things (IoT) newlinedevices have been used in industrial communications. As a result, there has newlinebeen an increase in the number of data-consuming application providers. newlineTraditional system efficiency in terms of throughput and latency newline newline