Evolutionary Algorithm Based Power Coverage Optimization for Visible Light Communications

Author

Ding, Jupeng ; Huang, Zhitong ; Ji, Yuefeng

Author_Institution

State Key Lab. of IPOC, Beijing Univ. of Posts & Telecommun., Beijing, China

Volume

16

Issue

4

fYear

2012

fDate

4/1/2012 12:00:00 AM

Firstpage

439

Lastpage

441

Abstract

Inherent multipath diffuse channel characteristics inhibit visible light communications (VLC) system to provide uniform and satisfactory communication performance within the room domain. An evolutionary algorithm based optimization scheme is proposed to modify the optical intensity of LED transmitters for reducing the signal power fluctuation extent. Simulation results show that the proposed scheme can efficiently reduce the signal power dynamic range up to 26.5% while the SNR is still sufficient for keeping BER<;10^-6 (using OOK-NRZ modulation format).

Keywords

amplitude shift keying; error statistics; evolutionary computation; light emitting diodes; modulation; optical communication; BER; LED transmitter; OOK-NRZ modulation format; SNR; VLC system; evolutionary algorithm; multipath diffuse channel characteristic; optical intensity; power coverage optimization; signal power fluctuation extent; visible light communication; Delay; Evolutionary computation; Lighting; Optical transmitters; Optimization; Power distribution; Receivers; Visible light communications; evolutionary algorithm; optimization;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2012.030512.112020

Filename

6168142