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A New Automotive VLC System Using Optical Communication Image Sensor

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Optical Communication Image Sensor (OCI) based optical OFDM system that achieves 55 Mbps VLC signal transmission for automotive application.
Impact Statement:This paper presents a new automotive visible-light-communication (VLC) system that consists of an LED-transmitter and an image sensor (camera) receiver. We use optical co...Show More

Abstract:

As a new technology for next-generation vehicle-to-everything (V2X) communication, visible-light communication (VLC) using light-emitting diode (LED) transmitters and cam...Show More
Impact Statement:
This paper presents a new automotive visible-light-communication (VLC) system that consists of an LED-transmitter and an image sensor (camera) receiver. We use optical communication image sensor (OCI) and achieve 55 MBps VLC signal transmission. The data rate is faster than the currently available rate for V2V and I2V communication systems, known as dedicated short-range communication (DSRC).

Abstract:

As a new technology for next-generation vehicle-to-everything (V2X) communication, visible-light communication (VLC) using light-emitting diode (LED) transmitters and camera receivers has been energetically studied. Toward the future in which vehicles are connected anytime and anywhere by optical signals, the cutting-edge camera receiver employing a special CMOS image sensor, i.e., the optical communication image sensor (OCI), has been prototyped, and an optical V2V communication system applying this OCI-based camera receiver has already demonstrated 10-Mb/s optical signal transmission between real vehicles during outside driving. In this paper, to reach a transmission performance of 54 Mb/s, which is standardized as the maximum data rate in IEEE 802.11p for V2X communication, a more advanced OCI-based automotive VLC system is described. By introducing optical orthogonal frequency-division multiplexing (opticalOFDM), the new system achieves a more than fivefold higher data rate. Additionally, the frequency response characteristics and circuit noise of the OCI are closely analyzed and taken into account in the signal design. Furthermore, the forward-current limitation of an actual LED is also considered for long operational reliability, i.e., the LED is not operated in overdrive. Bit-error-rate experiments verify a system performance of 45 Mb/s without bit errors and 55 Mb/s with BER <; 10-5.
Optical Communication Image Sensor (OCI) based optical OFDM system that achieves 55 Mbps VLC signal transmission for automotive application.
Published in: IEEE Photonics Journal ( Volume: 8, Issue: 3, June 2016)
Article Sequence Number: 6802716
Date of Publication: 20 April 2016

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