This paper aims to improve the visible light communication system using LED array and high-speed camera by proposing what we call “overlay coding”. “Overlay coding” is a new coding method to realize a hierarchical coding, through which a high-priority data can be received even if the receiver is far from a transmitter. Conventionally, the hierarchical coding has been realized through the wavelet transform that has a limitation of number and disposition of LEDs, and as a result it does not always match with the design of the transmitters (e.g. traffic lights, etc.) used in real life. To solve the limitation problem, we propose a more flexible way of designing the application of LEDs depending on the transmitters. In particular, overlay coding is realized through the procedures of coding and decoding. In coding, we replace one LED with a flexible number of LEDs, and the number depends on whether the data is high-priority or low-priority, then high-priority data and low-priority data are overlaid (section III-B1). In decoding, we first obtain the high-priority data, and then the low-priority data using retrieved high-priority data (section III-B2). The experimental result shows that the distance for receiving error-free data is extended from 30m to 70m in the overlay coding (section IV-B).


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Overlay coding for road-to-vehicle visible light communication using LED array and high-speed camera


    Beteiligte:
    Nishimoto, S. (Autor:in) / Nagura, T. (Autor:in) / Yamazato, T. (Autor:in) / Yendo, T. (Autor:in) / Fujii, T. (Autor:in) / Okada, H. (Autor:in) / Arai, S. (Autor:in)


    Erscheinungsdatum :

    01.10.2011


    Format / Umfang :

    618058 byte





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Visible light road-to-vehicle communication using high-speed camera

    Shinya Iwasaki, / Chinthaka Premachandra, / Tomohiro Endo, et al. | IEEE | 2008


    Visible Light Road-To-Vehicle Communication Using High-Speed Camera

    Iwasaki, S. / Premachandra, H.C.N. / Yendo, T. et al. | British Library Conference Proceedings | 2008


    Outdoor Road-to-Vehicle Visible Light Communication Using On-Vehicle High-Speed Camera

    Premachandra, Chinthaka / Yendo, Tomohiro / Tehrani, Mehrdad Panahpour et al. | Springer Verlag | 2015


    Outdoor Road-to-Vehicle Visible Light Communication Using On-Vehicle High-Speed Camera

    Premachandra, Chinthaka / Yendo, Tomohiro / Tehrani, Mehrdad Panahpour et al. | Springer Verlag | 2014