NDLI: Efficient Data Transmission Using MPPM Dimming Control in Indoor Visible Light Communication

Content Provider	IEEE Xplore Digital Library
Author	Xiaodi You Jian Chen Huanhuan Zheng Changyuan Yu
Copyright Year	2009
Abstract	In conventional visible light communication (VLC) dimming control systems utilizing pulse width modulation (PWM), reducing the duty cycle will push up the receiver sensitivity requirement if the transmission rate is kept constant. In this paper, we investigate a dimming control mechanism in indoor VLC to satisfy the receiver sensitivity requirement, which can achieve efficient data transmission while maintaining communication quality. To transmit excess signals, we propose a modification based on a conventional PWM scheme, which combines multi-pulse position modulation (MPPM) dimming control pulses with orthogonal frequency division multiplexing (OFDM) signals. Numerical results show that by utilizing the MPPM pattern effect, excess signals are transmitted, which can reduce the quadrature amplitude modulation (QAM) symbol rate and alleviate the receiver sensitivity requirement under a steadily high data rate and a bit error rate (BER) that is less than 10^-3.
Starting Page	1
Ending Page	12
Page Count	12
File Size	2912625
File Format	PDF
ISSN	19430655
Volume Number	7
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	OFDM Pulse width modulation Receivers Sensitivity Light emitting diodes Bit error rate receiver sensitivity requirement Dimming control visible light communication (VLC) multi-pulse position modulation (MPPM) orthogonal frequency division multiplexing (OFDM)
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Electrical and Electronic Engineering

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