Modelling and analysis of M-ary variable pulse position modulation for visible light communications

Jong-Ho Yoo; Byung Wook Kim; Sung-Yoon Jung

Modelling and analysis of M-ary variable pulse position modulation for visible light communications

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Author(s): Jong-Ho Yoo ¹ ; Byung Wook Kim ² ; Sung-Yoon Jung ³
- Affiliations: 1: Vehicle Safety R&D Center, Korea Automotive Technology Institute, 201 Gwahakseo-ro, Guji-myeon, Dlaseong-gun, Daeu, 711-891, Republic of Korea ;
  2: School of Electrical and Railway Engineering, Kyungil University, 50 Gamasil-gil, Hayang-eup, Gyeongbuk, Gyeongsan 712-701, Republic of Korea ;
  3: Department of Electronic Engineering, Yeungnam University, 280 Daehak-ro, Gyeongbuk, Gyeongsan 712-749, Republic of Korea
Source: Volume 9, Issue 5, October 2015, p. 184 – 190
DOI: 10.1049/iet-opt.2014.0107 , Print ISSN 1751-8768, Online ISSN 1751-8776

Received 06/11/2014, Accepted 23/04/2015, Revised 16/03/2015, Published 01/10/2015

Visible light communication (VLC) is an emerging communication paradigm that supports illumination and data transmission simultaneously. To provide dimming control functionality, a range of dimmable modulation methods have been exploited. Among them, the variable pulse position modulation (VPPM) scheme, which is deployed using the IEEE 802.15.7 VLC standard is very simple and easy to implement. On the other hand, it has a limited data rate because it just uses binary PPM for data transmission. This study proposes the M-ary VPPM (M-VPPM) scheme to increase the data rate of the VPPM scheme. To evaluate the performance of this scheme, the modelling of the transmitter, optical wireless channel and the receiver for M-VPPM are provided. In addition, the error probability according to the dimming ratio and modulation order was analysed mathematically. The simulation results showed that the analytical bounds on the error probability are tight, which provides key insights into the performance trade-off of M-VPPM in a dispersive VLC channel environment.

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Modelling and analysis of M-ary variable pulse position modulation for visible light communications

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