NDLI: Uplink design in VLC systems with IR sources and beam steering

Content Provider	IET Digital Library
Author	Alresheedi, Mohammed T. Hussein, Ahmed Taha Elmirghani, Jaafar M. H.
Abstract	The need for high-speed local area networks to meet the recent developments in multimedia and video transmission applications has recently focused interest on visible light communication (VLC) systems. Although VLC systems provide lighting and communications simultaneously from light emitting diodes (LEDs), LEDs, the uplink channel design in such a system is a challenging task. In this study, the authors propose a solution in which the uplink challenge in indoor VLC is resolved by the use of an infrared (IR) link. The authors introduce a novel fast adaptive beam steering IR system (FABS-IR) to improve the uplink performance at high data rates while providing security for applications. The goal of the authors’ proposed system is to enhance the received optical power signal, speed up the adaptation process and mitigate the channel delay spread when the system operates at a high transmission rate. The channel delay spread is minimised from 0.22 ns given by hybrid diffuse IR link to almost 0.07 ns. At 2.5 Gb/s, the authors’ results show that the imaging FABS-IR system accomplished about 11.7 dB signal to noise ratio in the presence of multipath dispersion, receiver noise and transmitter mobility.
Starting Page	311
Ending Page	317
Page Count	7
ISSN	17518628
Volume Number	11
e-ISSN	17518636
Issue Number	Issue 3, Feb (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/11/3
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2016.0495
Journal	IET Communications
Publisher Date	2017-02-16
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Adaptation Process Beam Steering Channel Delay Spread Mitigation FABS-IR Fast Adaptive Beam Steering IR System Free Space Optical Communication Free Space Optical Link High-speed Local Area Network Hybrid Diffuse IR Link Indoor Communication Indoor VLC Infrared Link IR Source LED Light Emitting Diode Multimedia Transmission Application Multipath Dispersion Received Optical Power Signal Receiver Noise Signal to Noise Ratio Transmitter Mobility Uplink Channel Design Uplink Design Video Transmission Application Visible Light Communication System VLC System
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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