Research Paper On Visible Light Communication

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The Institute of Electrical and Electronics Engineers (IEEE) Wireless Personal Area Networks working group 802.15.7 Task Group 7 is also developing a standard for VLC technologies that should be finalised by the end of 2010, whilst the EU-funded OMEGA project is investigating ways in which such technology can be incorporated into home networks.

Research in this area is being undertaken by, amongst others: Casio, Eurescom, France Telecom, NEC Corporation, Orange, Panasonic, Samsung, Sharp, Siemens AG, Telefonica, Toshiba, Universita di Roma, Universität Dortmund, Universität Ilmenau, University of Athens, University of California, and the University of Oxford.

Whilst visible light from LED systems and infrared emissions share similar frequency ranges, it is acknowledged that there are potential visual safety problems with using infrared for high rates of data transmission due to both the large energy emissions it would create and its invisibility, making suitably developed LED light data transmission a safer option for human eyes.

Radiofrequency/Microwave Communications At present the multiple use in buildings of the three independent WLAN frequency bands can often compromise information networks.

With proper development and foresight, VLC could radically reinvent the future of telecommunications industry to create a situation where everybody benefits, with technological findings also being able to be back-engineered into existing technology.

Research Paper On Visible Light Communication Essay About Using Computers Saves A Lot Of Time

The data transmission speeds of VLC systems are shown to be rapidly improving, with a frequency-modulated white LED being shown by Siemens researchers and the Heinrich Hertz Institute in Berlin to be capable of transmitting information over 5 meters at a rate of 500 Mbps, significantly faster than present Wi-Fi technologies (that can operate at rates of up to 150 Mbps).To date the Infrared Data Association (Ir DA) has standardised over 30 specifications that are widely implemented for cordless phones, printers, televisions and other devices.Its 2008 market-report indicated a prolific increase of Ir DA infrared enabled devices, of which over 1 billion units have been shipped to date, and that demand for such units was likely to increase greatly, particularly with the development of Ir Simple version 1.0 and technological advances used for Giga-IR.This is a problem that the adoption of VLC technologies could help resolve by providing alternative bandwidths.Additionally, whilst the use of radiofrequency/microwave communications devices is becoming increasingly widespread, research indicates that some emissions and intensities may also interfere with sensitive electronic equipment (), cause health problems and/or biological damage.2010: The Center for Ubiquitous Communication by Light (UC-Light) at the University of California seeks to develop VLC technology further to allow communication between a wide variety of electronic products, such as high definition televisions, information kiosks, personal computers (PCs), personal digital assistants (PDAs) and smartphones.2009: A result of the joint cooperative agreement between VLCC and the Ir DA, VLCC issue their first Specification Standard which incorporates and expands upon core Ir DA specification and defined spectrum to allow for the use of visible light wavelengths.The same researchers were also able to demonstrate that a system using up to 5 LEDs could transfer data over greater distances at 100 Mbps with direct line of sight.Reduced levels of transmission would have occurred using diffused light from walls outside of line of sight.As noted by the Visible Light Communications Consortium (VLCC) which was formed in Japan in 2003 (and includes amongst its members Casio, NEC Corporation, Panasonic, Samsung, Sharp and Toshiba), “…visible light communication has characteristics to be ubiquitous, transmitted at ultra high speed and harmless for human body and electronic devices, compared to [emissions] by radio and infrared communications.” Such factors indicate that there is a strong need to ensure that VLC are at least as biologically friendly as the units they are designed to replace or supplement, and that they may offer a more sophisticated solution to the communications technology than is presently available.

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  • Bio Electromagnetic Research Initiative - LiFi - Visible Light.
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    The Visible Light Communications Consortium VLCC is established between major Japanese companies to develop, plan, research and standardise Japan’s own visible light communication systems. Its brief is to develop, test, investigate, plan and standardise ubiquitous high-speed biologically-friendly VLC LED systems.…

  • Visible Light Communication - Term Paper
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    In this paper we present a new indoor FSO system, also known as a visible light communication VLC system that addresses achieving satisfactory data rates through diffuse link while supporting mobility under line of sight LOS constraints.…

  • Visible light communication Applications, architecture.
    Reply

    Visible Light Communication VLC systems employ visible light for communication that occupy the spectrum from 380 nm to 750 nm corresponding to a frequency spectrum of 430 THz to 790 THz as shown in Fig. 2.…

  • PDF Visible Light Communications VLC Technology
    Reply

    This article reviews the visible light communications VLC, a technology in which the visible spectrum is modulated to transmit data. It presents the VLC communication system the transmitter.…

  • Visible Light Communication Research Papers - Academia.edu
    Reply

    This paper expounds the background of the development of visible light communication technology which uses light emitting diodes as a transmitting module and the development status at home and abroad analysis its system advantages, limitations, key technologies, characteristics and existing problems, looks forward to future research trends, and.…

  • Visible Light Communication Request PDF - Share and discover research
    Reply

    Visible light communication VLC is an evolving communication technology for short-range applications. Exploiting recent advances in the development of high-power visible-light emitting LEDs, VLC.…

  • International Journal of Computer Trends and Technology IJCTT.
    Reply

    LEDs is helping to drive this technology in the form of Visible Light Communication VLC. In this paper, a visible light communications system is proposed that employs wavelength division multiplexing, to transmit multiple data streams from different data sources simultaneously and…

  • AN OVERVIEW OF VISIBLE LIGHT COMMUNICATION SYSTEMS - arXiv
    Reply

    In recent years, one of the ideas put forward for wireless optical communication is the visible light communication method. The signals in the 380-780 nm wavelength interval of the electromagnetic spectrum are the light signals that can be detected by the human eye. It is…

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