lifi presentation
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Light Fidelity (LIFI) Presentation Purdue University MGMT 547 Final PresentationTRANSCRIPT
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The World Connected through Light
Light-Fidelity (Li-Fi) Wenxuan HeYuanxi Qiu
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From History to Future Professor Harald Haas
University of Edinburg Technological renovation Uses Visible Light Communication
Technology (VLC) Infrastructure Requirement Data Privacy Smart Initiatives
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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
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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
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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)
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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
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Various Uses of Li-Fi
Hospital & Healthcare Aviation Vehicles and Transportation Underwater Communications Location Based Services (LBS) Many more!
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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
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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
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Strategic Advantage - Market
Technology is the current hot market
New technology attracts investors Recreates wireless communication The cool factor
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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
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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
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Li-Fi Experimental Lab - University of Edinburg
Thank you! Wenxuan HeYuanxi Qiu