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International Journal of Automotive Technology > Volume 17(2); 2016 > Article
International Journal of Automotive Technology 2016;17(2): 347-352.
doi: https://doi.org/10.1007/s12239-016-0035-8
J.-H. YOO1, J.-S. JANG2, J. K. KWON2, H.-C. KIM2, D.-W. SONG2, S.-Y. JUNG2
1Korea Automotive Technology Institute
2Yeungnam University
With the emergence of LED lighting, IT convergence technology using the visible spectrum of LEDs, such as Visible Light Communication (VLC), has been highlighted. Among the many VLC applications, vehicular VLCs based on LED headlamps and transportation lighting infrastructure, such as street lamps, traffic lights, etc., are considered good alternatives for Intelligent Transportation Systems (ITS) or Active Safety applications. This paper introduces a demonstration system of vehicle-to-vehicle (V2V) VLC based on LED headlamps. By applying an inverse 4-PPM modulation scheme satisfying a 75 % dimming level under the light distribution regulation of LED headlamp, the proposed system showed its capability for V2V VLC with a 10 kbps data rate for more than 30 m under day time conditions. By measuring the BER performance according to distance, outdoor V2V VLC was possible for more than 30 m even in the day time.
Key Words: Light emitting diode (LED), LED headlamp, Visible light communication (VLC), Intelligent transportation systems (ITS), Vehicle-to-vehicle (V2V), IT convergence
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