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Experimental Study on Flicker Mitigation in VLC using Pseudo Manchester Coding  

Ifthekhar, Md. Shareef (Electronic Engineering, Kookmin University)
Le, Nam-Tuan (Electronic Engineering, Kookmin University)
Jang, Yeong Min (Electronic Engineering, Kookmin University)
Publication Information
Journal of Satellite, Information and Communications / v.9, no.3, 2014 , pp. 116-120 More about this Journal
Abstract
Visible Light Communication is one of the promising technologies for wireless communication due to the possibility to use existing LED lightening infrastructure to transmit data. LED has the ability to turn on and off very fast enough that our human eyes can't recognize so it can be used to transmit data via visible light along with illumination. But it faces flicker problem due to the brightness discrepancies between '1' and '0' bit patterns inside a data frame. Various run length limited (RLL) coding scheme like Manchester code, 4B6B, 8B10B or VPPM can be used to solve flickering problem. So we propose pseudo Manchester codding which can transmit data without modifying LED modulator and demodulator circuit as well as solve flickering problem.
Keywords
Visible Light Communication; flickering mitigation; Manchester code; Microcontroller;
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