Title :
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
fDate :
4/1/2012 12:00:00 AM
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;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2012.030512.112020
