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The World Connected through Light Light-Fidelity (Li-Fi) Wenxuan He Yuanxi Qiu

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Light Fidelity (LIFI) Presentation Purdue University MGMT 547 Final Presentation

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  • The World Connected through Light

    Light-Fidelity (Li-Fi) Wenxuan HeYuanxi Qiu

  • From History to Future Professor Harald Haas

    University of Edinburg Technological renovation Uses Visible Light Communication

    Technology (VLC) Infrastructure Requirement Data Privacy Smart Initiatives

  • How Li-Fi Works - Connecting

    Connecting requires ISP - no different from Wi-Fi

    Data is sent to Lamp Driver

    Lamp Driver determines the LED to communicate

  • How Li-Fi Works - Connected

    Turning a color on transmits 1, turning a color off transmits 0 Parallel transmission possible with multiple colors Invisible and harmless to the human eye

  • How Li-Fi Works - Receiving

    Avalanche Photodiode Receiver Bandwidth is the only limiting factor Photodiode sends signal to dongle for

    processing Dongle sends processed data to device

    like normal data This technology is subject to changes

    and improvements (Moores Law)

  • Goods and BadsAdvantages Disadvantages

    Data transmitted at speed of light Bandwith as limiting factor

    Lower Maintenance Costs than radio WiFi Easy compromise of data under the same light

    Very complex encryption methods Only fix for faulty LED light is replacement

    Faulty transmission lights do not shutdown connection Requires adaptive encryption in case of faulty lights

    Security from devices outside of LiFi Infrastructure is not yet widely available

    Instant connection High initial implementation cost

    Extremely low latency Signal can be easily and physically blocked

    Greatly reduces chance of corrupt data

  • Various Uses of Li-Fi

    Hospital & Healthcare Aviation Vehicles and Transportation Underwater Communications Location Based Services (LBS) Many more!

  • Strategic Advantage - Speed

    Data travels at speed of light Very high volume of transmission 3.5Gb/s on single color Li-Fi Red-Green-Blue generate 10.5Gb/s More than 10x latest Wi-Fi

  • Strategic Advantage - Bandwidth

    FCCs concern: running out of radio frequency bandwidths

    Ciscos report: annual data traffic will reach 190 exabytes per year by 2018

    Does not use radio frequencies Much wider spectrum Much wider bandwidth

  • Strategic Advantage - Market

    Technology is the current hot market

    New technology attracts investors Recreates wireless communication The cool factor

  • Strategic Advantage - Growth

    VLC and FSO markets CAGR at 87% in 2014 to 45% in 2020

    Market worth estimated of over $9 billion by 2020

    Current market not mature and not competitive

    Huge growth potential

  • Cost of Implementation

    Assume 20 LED lightbulbs per home Maximum total cost = $1450 every 5.7 years Realistic cost would be much less than $265 per year

  • Li-Fi Experimental Lab - University of Edinburg

    Thank you! Wenxuan HeYuanxi Qiu