NDLI: Improved error performance of variable PPM for visible light communication

Content Provider	IEEE Xplore Digital Library
Author	Ozaki, Takashi Kozawa, Yusuke Umeda, Yohtaro
Copyright Year	2014
Description	Author affiliation: Department of Electrical Engineering, Faculty of Science and Technology, Tokyo University of Science, Chiba, JAPAN (Kozawa, Yusuke; Umeda, Yohtaro) \|\| Department of Electrical Engineering, Graduate School of Science and Technology, Tokyo University of Science, Chiba, JAPAN (Ozaki, Takashi)
Abstract	We propose a variable multi-pulse pulse-position-modulation (VMPPM) system with a dimming control that combines the use of pseudo-orthogonal codes and MPPM. In VMPPM, r slots are selected from n MPPM slots and codes for data are generated in each selected r slot according to source data equation [bit/frame]. This enables VMPPM to achieve a higher data-transmission rate than the conventional variable PPM (VPPM). Additionally, VMPPM can represent the dimming level of n − r + 1 stages by using the empty n − r slots. In this paper, the symbol error rate (SER) of VPPM is investigated through theoretical analysis. In addition, the SER performance and spectral efficiency of VMPPM is compared with those of VPPM and variable rate MPPM (VR-MPPM). Specifically, the SER performance is evaluated by taking into account the human eye response. Consequently, VPPM can greatly decrease the maximum ratio of electrical signal power per bit to noise at SER = $10^{−7}$ for conventional dimmable modulation schemes about 20 dB. Moreover, VMPPM is superior to VPPM in the spectral efficiency.
Starting Page	259
Ending Page	264
File Size	456465
Page Count	6
File Format	PDF
ISBN	9789860334074
ISSN	18825621
DOI	10.1109/WPMC.2014.7014827
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-09-07
Publisher Place	Australia
Access Restriction	Subscribed
Rights Holder	National Institute of Information and Communicatio
Subject Keyword	Wireless communication Correlation Error analysis Modulation Receivers Educational institutions Multimedia communication
Content Type	Text
Resource Type	Article

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