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Optical Engineering

Polarity separating optical orthogonal frequency division multiplexing for free-space visible light communications
Author(s): Jianfeng Li; Zhitong Huang; Jianke Li; Xiaoshuang Liu
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Paper Abstract

A modulation format, polarity separating optical orthogonal frequency division multiplexing (PSO-OFDM), is proposed to mitigate the light-emitting diode (LED) nonlinearity for visible light communication systems. A polarity separator is used to divide the OFDM signal in time domain x ( t ) into two parts: x + ( t ) and x ( t ) , which will be transmitted parallelly from the different LEDs and overlap linearly in free space to realize PSO-OFDM. The experimental results demonstrate that PSO-OFDM has high spectral efficiency and suffers less nonlinear distortions than other methods. Employing PSO-OFDM, the modulation index and bit error rate performance can be significantly enhanced.

Paper Details

Date Published: 23 February 2017
PDF: 5 pages
Opt. Eng. 56(2) 026118 doi: 10.1117/1.OE.56.2.026118
Published in: Optical Engineering Volume 56, Issue 2
Show Author Affiliations
Jianfeng Li, Hebei Univ. of Economics & Business (China)
Zhitong Huang, Beijing Univ. of Posts and Telecommunications (China)
Jianke Li, Hebei Univ. of Economics & Business (China)
Xiaoshuang Liu, Hebei Univ. of Economics & Business (China)


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