Network Performance Comparison of Light Fidelity and Wireless Fidelity

Abstract

Light Fidelity is a wireless technology that uses light for data communication. It is a bidirectional network that delivers data at high speed. Mobile users can experience high data throughput with Light fidelity than the existing wireless fidelity technology. This paper mainly focuses on the network performance of Light fidelity and wireless fidelity when many devices connect to the system. The aim was carried out by simulating the wireless fidelity system in the OPNET Modeller environment. The result obtained showed that as the number of users increases, there is a reduction in data throughput and increment in latency and packet loss. Simulation of Light fidelity done in the Simulink environment showed that there were high data throughput, low latency, and low packet loss. Light Fidelity network was not significantly affected by the number of users. The result of both light fidelity and wireless Fidelity was compared using a python program. Observation showed that the network performance of the light fidelity system was better than the wireless fidelity system. The percentage improvement of the data throughput of light fidelity to wireless fidelity was 53% while that of latency and packet loss is 39.1% and 8.78% respectively.

Implementation and evaluation of a comprehensive Li-Fi system using Matlab/Simulink

“…Following the transmitter an optical channel serving as the medium through which the light propagates, and used to transmit the information to the receiver's side, is added. Next, a receiver part involving a photodiode that converts optical power to electrical signal and an amplifier circuit used to amplify the converted electrical signal is placed [10][11].…”

“…In recent researches several models to describe and simulate the Li-Fi systems are developed. In [10], a Li-Fi model including a standard transceiver circuit is developed using MATLAB ® . Through simulations, Wi-Fi and Li-Fi technology are compared in terms of data transfer rate, packet loss, delay data and it is seen that Li-Fi technology is superior.…”

“…The aim of this paper is implementation and evaluation of a more advanced and efficient model for Li-Fi system. To increase efficiency over previous Li-Fi models [10][11], various components such as mirrors and lenses are added to the Simulink ® model of the Li-Fi system. As the light emitted from the LED using a mirror and/or lens is focused on the photodiode, an increase in the magnitude of the output signal is expected [10,15].…”