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Research on Indoor Visible-Light Communications System with Carrier Interferometry OFDM

Authors:
Xiaoming Tao
Zhengyuan Xu
Jianhua Lu

Keywords: Visible light communication; CI-OFDM; PAPR.

Abstract:
In order to enhance the overall performance of the visible light communications system and to achieve the efficient use of spectrum resources, by leveraging the characteristic of channel frequency selection, we propose a novel visible light communications system based on Carrier Interferometry Orthogonal Frequency Division Multiplexing (CI-OFDM) transmission scheme. Through the frequency domain diversity, the system performance can be efficiently improved. At the same time, with a meticulous designed CI codes, the system Peak-Average Power Ratio (PAPR) can be effectively reduced. Analysis and simulation results demonstrate that, under the same Signal to Noise Ratio (SNR) condition, the proposed CI-OFDM scheme performs significantly better in BER than the traditional OFDM system, and greatly reduces the PAPR of the transmitted signal.

Pages: 122 to 126

Copyright: Copyright (c) IARIA, 2011

Publication date: October 23, 2011

Published in: conference

ISSN: 2163-9027

ISBN: 978-1-61208-166-3

Location: Barcelona, Spain

Dates: from October 23, 2011 to October 29, 2011