Color-Shift Keying for Optical Camera Communication Using a Rolling Shutter Mode

An optical camera communication (OCC) is a special type of a visible light communication that uses a complementary metal-oxide semiconductor as a receiver. However, it is difficult to apply a high-order modulation scheme to such communications because of strong intersymbol interference. In this pape...

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Bibliographic Details
Published in:IEEE photonics journal 2019-04, Vol.11 (2), p.1-8
Main Authors: Chen, Hao-Wei, Wen, Shang-Sheng, Wang, Xing-Lin, Liang, Ming-Zhu, Li, Mu-Yun, Li, Qing-Chang, Liu, Yun
Format: Article
Language:English
Subjects:
Adaptive optics
Bit error rate
Cameras
Color
color-shift keying (CSK)
Communication
Demodulation
Error correction
Image color analysis
Keying
light emitting diode (LED)
Light emitting diodes
light panel
Metal oxide semiconductors
Metal oxides
Modulation
Optical camera communication (OCC)
Optical communication
Optical receivers
Optical transmitters
Pixels
rolling shutter
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Summary:An optical camera communication (OCC) is a special type of a visible light communication that uses a complementary metal-oxide semiconductor as a receiver. However, it is difficult to apply a high-order modulation scheme to such communications because of strong intersymbol interference. In this paper, we propose and demonstrate an OCC system using an 8-color color-shift keying scheme. We used an RGB-based LED light panel as a transmitter and analyzed the properties of the rolling shutter. We discuss the demodulation process and perform bit error rate (BER) tests at different ambient illuminances and sampling positions. A net data rate of 8.64 kbps and a pixel efficiency of 3.75 pixels per bit were achieved while keeping the BER below 3.8E-3, which meets the FEC's 7% forward error correction requirement. In addition, the system shows good robustness for indoor applications.
ISSN:1943-0655
1943-0655
1943-0647
DOI:10.1109/JPHOT.2019.2898909