Lambertian Luminous Intensity Radiation Pattern Analysis in OLOS Indoor Propagation for Better Connectivity

Vaishali Vaishali,Sandeep Sancheti,Carlos Eric Galvan Tajada,Deepika Koundal,Arpit Kumar Sharma,Francisco Eneldo López Monteagudo,Hamurabi Gamboa Rosales,Amita Nandal,Arvind Dhaka,Carles Gomez

doi:10.1155/2022/3703477

Abstract

This paper illustrates the impact of wavelength on the Optical Line of sight (OLOS) link working in the Visible Light Communication (VLC) spectrum. The extension of work is based on previous outcomes given by researchers. It has been elaborated with different determinants based on the color factor of LED available in the Visible Light (VL) spectrum. In the modern world, Light Emitting Diodes (LEDs) are prevailing the market as a light source, which is dominantly used at homes and workplaces. The designed VLC system includes LED as a transmitter, which is used as a higher source of brightness and provides both illuminations and data communication. Solid-state lighting characteristic shows the electroluminance capability of high brightness LEDs. Within few years, the luminous efficacy of LED is exponentially increasing from the range of less than 0.1 lm/W to over 230 lm/W with a huge lifetime of around 100,000 h. MATLAB is used to simulate a VLC link between LEDs (operated at different wavelengths) and photodetector. We present here the performance analysis of Lambertian Luminous Intensity radiation pattern (LLIRP) generated by different colors of LED for a clear OLOS model with different Spectral Luminous Efficiency at photonic vision. A designed system model of VLC supports short links present in indoor room conditions with better connectivity.

Highlights

Optical wireless communication (OWC) has become a trending field among researchers because of the high capacity that it offers to solve last-mile applications [1, 2]
Analysis of results completed at different values of the wavelength of light in visible spectrum showing variable colors when detected with human photopic [21] vision. e selection of color process is based on the availability of Light Emitting Diodes (LEDs) sources in the market
Modeling and simulation of Visible Light Communication (VLC) links for Optical Line of sight (OLOS) propagation under indoor OWC are highly dependent on key characteristics of the transmitter, receiver, and channel. e objective of conducted work is to present one mathematical model that connects all the variable constraints. e simulation results explain the consequences and dependency between the transmitter and receiver parameters. e various experiments demonstrated in this chapter are discussed as follows: (i) Color/wavelength is a very important constraint to attain the optimum performance of the link under the same scenario

Summary

Introduction

Optical wireless communication (OWC) has become a trending field among researchers because of the high capacity that it offers to solve last-mile applications [1, 2]. E main drivers of this technique include high bandwidth/data rate, longer lifetime LEDs as compared with incandescent bulbs, better brightness level, no health and physical hazards, data security, and low power consumption [6, 7]. Due to such advantages, LEDs show the potential for higher data communication with power-saving features on global platforms

Results

Discussion

Conclusion