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Li-fi

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on 22 April 2015

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Transcript of Li-fi

개인 맞춤형 관람이 가능해짐
교체 시 통신기술까지 더하면 에너지 효율 증대

탐구 동기
lightbulb Created by Scott Lewis
from the Noun Project

Li-Fi
2015-4-14
활용사례

-
Visible Light Communication
(VLC)
- Radio frequency waves
-much
wider
bandwidth
faster
data transmission
-
3.5 gbps per colors
–red, green and blue
-
10
times quicker than Wi-Fi

심한 발열

Application of LI-FI
<Specific Utilization>
Example: City University of Hong Kong
결론
not have an access point nearby
the network lost
has to reload the page after arriving the vicinity of an access point
What is Li-Fi?
Principle of Li-Fi
Application of Li-Fi
Light Fidelity (Li-Fi)
Retail Store Operator

Wi-Fi 867 mbps
Li-Fi- 3.5 gb per color
10.5 gb per second
Why not using Wi-Fi?
Li-Fi is a better choice !
luminaire can store different materials
lights cannot penetrate walls--> safer than Wi-Fi
have to be under the light to get the information wirelessly
Cost-effective measure
i.e. within the pre-existing infrastructure
enhance the in-house customer experience
works better than GPS satellites
Lighting Company
value-adding to the buyers
differentiate themselves from other competitors
i.e. Phillips
precise indoor location
high level of physical security (one-way com.)
does not fail in communication performance
environmentally-friendly
efficient
NFC & QR code (rather fragmented across devices)
Advantages
Application of LI-FI
Application of LI-FI
Application of LI-FI
~The End~
Wi-Fi speed : 300 Mbps
lecture theatres & the library : 8-10 Mbps
Emart Application
Advantages
Group 16
Chan Zaan Yu 54037940
Cheung Chun Him 53565854
Tao Hiu Kwan 54029060
Tse Oi Teen 54030925
Yip Ngo Ching Isabel 54033417
탐구 목표
usage of e-textbooks
the requiring of interactions
the improvements of visual and audio quality of the materials
larger file sizes time consuming
Application of Li-Fi
What is Li-Fi?
-
Optical Wireless Communication
(OWC)

- transfer data using light from LEDs as the
internet access point

-usual source for lighting at
homes and offices
97%

Slower
microchip in the lamp driver

Li-Fi Indoor Location System
Reference
Full transcript