A Cost-Efficient RGB Laser-Based Visible Light Communication System by Incorporating Hybrid Wavelength and Polarization Division Multiplexing Schemes

Abstract

Visible light communication (VLC) has been proven a promising technology to counter the limitations of radio frequency (RF) communication technology such as high interference and high latency issues. VLC offers high bandwidth as well as immunity to interference from other electromagnetic spectrums. Due to these features, VLC can be an excellent solution for biomedical and healthcare applications for transmission of body sensor signals and other crucial patient information. In this work, a highly efficient VLC system is designed to transmit six channels, with each one carrying 10 Gbps of data, over a 500 m optical fiber link and a 200 cm VLC link. To make the VLC system cost effective, simple and efficient on-off keying (OOK) (non-return to zero) is used as the encoding scheme. Moreover, to further enhance the capacity and bandwidth of the proposed VLC system, hybrid wavelength division multiplexing (WDM) and polarization division multiplexing (PDM) schemes are incorporated by using red, green, and blue lasers. The reported results show the successful transmission of all channels (6 × 10 Gbps) over 500 m optical fiber and 200 cm of VLC link.

WITHDRAWN: Circular Polarization Division Multiplexing in Visible Light Communication System by Incorporating QPSK and Distortion Compensation Enabled DSP/IDSP

“…Using 380 nm to 780 nm wavelength window, a wireless transmission technology is feasible with Laser light consists of electromagnetic waves that vibrate in various directions and the orientation of these vibrations is known as the polarization of light. Out of the four properties of Laser light such as frequency (f), power, phase, and polarization, only polarization is not fully explored (Kaur et al 2017), and here comes the need for Polarization Division Multiplexing (PDM) in VLC systems (Xiang-Peng et al 2021). The capacity improvement is introduced with PDM by leveraging the polarization properties of light to transmit multiple independent data streams over VLC.…”

Analysis of effects of Correlated Color Temperature (CCT) on the performance of Visible Light Communication (VLC) Link.

“…It includes transmitter and receiver, where θ is angle of incidence, φ refers to the angle of emission, d denotes distance between transmitter and receiver and FOV is acronyms of field of view and refers to maximum angle at which a photodetector can detect light signals. [8,9,10,11,12,13]. The Lambertian order of the source, m can be defined by the following equation, [8,11].…”

“…Fig.-3 Relative spectral emission of OSRAM GWPLLRA1.EM white PLED[19].The relative spectral emission peak around 600 nm and composite human eye response curve shown in dotted lines, Fig.-3. The OOK modulation technique has been adopted to transmit data in indoor environment using simple Lambertian distribution assuming mode number of m = 1(HPA= 60°)[12,13,16,20].…”

Performance enhancement of visible light communication (VLC) system incorporating WMZCC‐OCDMA codes and PDM‐QPSK‐DSP data encoding

“…PDM and wavelength division multiplexing (WDM) in VLC are employed using lasers and successfully achieved 40.665 Gbit/s using bit‐and‐power‐loading OFDM 48 . PDM‐WDM having a 60 Gbps capacity is proposed by Xiang‐Peng 2021 and covered 200 cm in VLC using OOK 49 . Due to increased spectral efficiency, lower spectral width and improved endurance to different transmission defects, PDM‐QPSK is a futuristic modulation for 400 Gbps optical communications.…”

“…48 PDM-WDM having a 60 Gbps capacity is proposed by Xiang-Peng 2021 and covered 200 cm in VLC using OOK. 49 Due to increased spectral efficiency, lower spectral width and improved endurance to different transmission defects, PDM-QPSK is a futuristic modulation for 400 Gbps optical communications.…”