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Visual Cell OOK Modulation : A Case Study of MIMO CamCom
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 Title & Authors
Visual Cell OOK Modulation : A Case Study of MIMO CamCom
Le, Nam-Tuan; Jang, Yeong Min;
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 Abstract
Multiplexing information over parallel data channels based on RF MIMO concept is possible to achieve considerable data rates over large transmission ranges with just a single transmitting element. Visual multiplexing MIMO techniques will send independent streams of bits using the multiple elements of the light transmitter array and recording over a group of camera pixels can further enhance the data rates. The proposed system is a combination of the reliance on computer vision algorithms for tracking and OOK cell frame modulation. LED array are controlled to transmit message in the form of digital information using ON-OFF signaling with ON-OFF pulses (ON = bit 1, OFF = bit 0). A camera captures image frames of the array which are then individually processed and sequentially decoded to retrieve data. To demodulated data transmission, a motion tracking algorithm is implemented in OpenCV (Open source Computer Vision library) to classify the transmission pattern. One of the most advantages of proposed architecture is Computer Vision (CV) based image analysis techniques which can be used to spatially separate signals and remove interferences from ambient light. It will be the future challenges and opportunities for mobile communication networking research.
 Keywords
OOK;Computer Vision;VLC;CamCom;MIMO;
 Language
English
 Cited by
 References
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2.
IEEE, Part 15.7: Short-range Wireless Optical Communication Using Visible Light, IEEE 802.15.7 Standard for Local and Metropolitan area networks, 2011.

3.
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4.
A. Ashok, M. Gruteser, N. Mandayam, and K. Dana, "Characterizing multiplexing and diversity in visual MIMO," in Proc. Annu. Conf. Inform. Sci. Syst. (CISS), pp. 1-6, Baltimore, U.S.A., Mar. 2011.