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Open AccessArticle

An Efficient Data Transmission with GSM-MPAPM Modulation for an Indoor VLC System

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School of Electronics and Electrical Engineering, Dong Guan Polytechnic, No. 3, University Road, Songshan Lake District, Dongguan 523808, Guangdong, China
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Department of Electrical Engineering, St. John’s University, New Taipei City 25135, Taiwan
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Department of Industrial Engineering and Management, St. John’s University, New Taipei City 25135, Taiwan
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Author to whom correspondence should be addressed.
Symmetry 2019, 11(10), 1232; https://doi.org/10.3390/sym11101232
Received: 31 July 2019 / Revised: 11 September 2019 / Accepted: 16 September 2019 / Published: 2 October 2019
(This article belongs to the Special Issue Selected Papers from IIKII 2019 conferences in Symmetry)
As an emerging wireless communication technique, visible light communication is experiencing a boom in the global communication field, and the dream of accessing to the Internet with light is fast becoming a reality. The objective of this study was to put forward an efficient and theoretical scheme that is based on generalized spatial modulation to reduce the bit error ratio in indoor short-distance visible light communication. The scheme was implemented while using two steps in parallel: (1) The multi-pulse amplitude and the position modulation signal were generated by combining multi-pulse amplitude modulation with multi-pulse position modulation using transmitted information, and (2) certain light-emitting diodes were activated by employing the idea of generalized spatial modulation to convey the generated multi-pulse amplitude and position modulation optical signals. Furthermore, pulse width modulation was introduced to achieve dimming control in order to improve anti-interference ability to the ambient light of the system. The two steps above involved the information theory of communication. An embedded hardware system, which was based on the C8051F330 microcomputer and included a transmitter and a receiver, was designed to verify the performance of this new scheme. Subsequently, the verifiability experiment was carried out. The results of this experiment demonstrated that the proposed theoretical scheme of transmission was feasible and could lower the bit error ratio (BER) in indoor short-distance visible light communication while guaranteeing indoor light quality. View Full-Text
Keywords: generalized spatial modulation; indoor visible light communication; multi-pulse amplitude and position modulation; dimming control generalized spatial modulation; indoor visible light communication; multi-pulse amplitude and position modulation; dimming control
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Bao, J.-J.; Hsu, C.-L.; Tu, J.-F. An Efficient Data Transmission with GSM-MPAPM Modulation for an Indoor VLC System. Symmetry 2019, 11, 1232.

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