scholarly journals Experimental comparison of pulse-amplitude and spatial modulations for vehicle-to-vehicle visible light communication in platoon configurations

2017 ◽  
Vol 25 (20) ◽  
pp. 24790 ◽  
Author(s):  
Bastien Béchadergue ◽  
Luc Chassagne ◽  
Hongyu Guan
Keyword(s):  
Visible Light ◽  
Pulse Amplitude ◽  
Visible Light Communication ◽  
Experimental Comparison ◽  
Vehicle To Vehicle ◽  
Spatial Modulations

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

Symmetry ◽  
2019 ◽  
Vol 11 (10) ◽  
pp. 1232 ◽  
Author(s):  
Bao ◽  
Hsu ◽  
Tu
Keyword(s):  
Visible Light ◽  
Short Distance ◽  
Pulse Width Modulation ◽  
Pulse Amplitude ◽  
Visible Light Communication ◽  
Spatial Modulation ◽  
Theoretical Scheme ◽  
Error Ratio ◽  
Bit Error Ratio ◽  
Dimming Control

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.

scholarly journals Superposed pulse amplitude modulation for visible light communication

2013 ◽  
Vol 21 (25) ◽  
pp. 31006 ◽  
Author(s):  
J. F. Li ◽  
Z. T. Huang ◽  
R. Q. Zhang ◽  
F. X. Zeng ◽  
M. Jiang ◽  
...  
Keyword(s):  
Visible Light ◽  
Amplitude Modulation ◽  
Pulse Amplitude ◽  
Visible Light Communication ◽  
Pulse Amplitude Modulation

scholarly journals Secrecy Dimming Capacity in Multi-LED PAM-Based Visible Light Communications

2017 ◽  
Vol 2017 ◽  
pp. 1-6
Author(s):  
Byung Wook Kim
Keyword(s):  
Visible Light ◽  
Light Emitting Diode ◽  
Mobile Network ◽  
Pulse Amplitude ◽  
Visible Light Communication ◽  
Security And Privacy ◽  
Visible Light Communications ◽  
Light Emitting ◽  
Secure Transmission ◽  
Transmission Ability

Recently, mobile cloud computing (MCC) has gained a lot of interest for researchers building the next-generation mobile applications. Because unauthorized access may cause serious problems, security and privacy with MCC have become significant issues. This paper addresses the secrecy dimming capacity of secure transmission in MCC over visible light communication (VLC) channels. By obtaining the entropy-maximizing symbol probability of multiple light emitting diode- (LED-) based pulse amplitude modulation (PAM), mathematical analysis of the secrecy dimming capacity of VLC was derived. Simulation results show that the secure transmission ability of multi-LED-based VLC is determined according to the number of activated LEDs and target dimming level. This can be a guideline for practical VLC-based mobile network designers intending to secure wireless transmission and to decide on the number of activated LEDs at target dimming level to operate.

Trellis-coded pulse amplitude modulation for indoor visible light communication

2013 ◽  
Author(s):  
Yu Wang ◽  
Aiying Yang ◽  
Yongsheng Wu ◽  
Lihui Feng ◽  
Yu-nan Sun ◽  
...  
Keyword(s):  
Visible Light ◽  
Amplitude Modulation ◽  
Pulse Amplitude ◽  
Visible Light Communication ◽  
Pulse Amplitude Modulation ◽  
Trellis Coded
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