High Speed Visible Light Communication in Real-timevlca.net/site/wp/wp-content/uploads/2016/01/2015_10_26_Fraunhofer... · High Speed Visible Light Communication in Real-time Fahim

PhotonicNetworks and SystemsFraunhoferHeinrich Hertz Institute

Fraunhofer Heinrich Hertz Institute, Einsteinufer 37, 10587 Berlin www.hhi.fraunhofer.de

High Speed Visible Light Communicationin Real-time

Fahim Nawabi

Published by Visible Light Communications Association at "International Conference and Exhibition on Visible Light Communications 2015" on October 26, 2015 in Yokohama, Japan.This is an open access article under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0). This means that the work must be attributed to the author (BY clause), no one can use the work commercially (NC clause), and the work cannot be modified by anyone who re-uses it (ND clause).

PhotonicNetworks and Systems

Fraunhofer: Europe ‘s Leader in Applied Research

� 60 Institutes plus research institutions, working groups, branch labs and application center at 40 locations

� 20,000 staff

� Total budget: 2 billion €

� Approx. 80% raised through contract research

München

Holzkirchen

Freiburg

Efringen-Kirchen

FreisingStuttgart

PfinztalKarlsruheSaarbrücken

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DarmstadtWürzburg

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EuskirchenAachen St. AugustinSchmallenberg

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PotsdamBerlin

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Garching

Straubing

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Hamburg

High Speed Visible Light Communication in Real-timeFahim Nawabi


Fraunhofer: Europe‘s Leader in Applied Research Research Areas

� Information and Communication Technology

� Life Sciences

� Microelectronics

� Surface Technology and Photonics

� Production

� Materials and Components

� Defense and Security



©

� Classification of Optical Wireless

� Field of Applications

� Application Directions

� Current Projects

� Market Situation

Outline

10/19/2015 4High Speed Visible Light Communication in Real-timeFahim Nawabi


©

Classification by Optical Frontend

Transmitter

Receiver

Very low

speed,

dominated

by the

transmitter

Low speed,

dominated by the receiver

Medium

speed

High

speed

Ultra high

speed



10/19/2015 6

IT SecurityUnderwater

CommunicationsPrivate

Households

Mechanical Engineering

Advertising, Messaging

Tradeshows, Museums

In-flight Entertainment

Hospitals (RF-sensitive)

Attractive Application Fields


PhotonicNetworks and SystemsApplication Directions

10/19/2015 7

Data Broad-casting

Bidirecti-onal Link

Low-Speed



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Point-to-Point Bidirectional VLC -Link

� Bidirectional link

� Light Source: any high-power LED (arbitrary color)

� Data rates: up to 1 Gbit/s

� I/O: Ethernet RJ45

10/19/2015 8

Data Broad-casting

Bidirecti-onalLink

Low-Speed

High-Speed



©

Current Projects: SODALES/XHAUL

� Low cost optical wireless link forthe backhaul of Wi-Fi and LTE

� Bidirectional data exchange

� Improved link robustness due torate adaptation

� Very high availability atshort distances

� No active tracking needed

� 500 Mbit/s @ 100 m



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Current Peojects: Island of Mainau

� Conference room with Li-Fi

� Multiple access points

� Bidirectional optical wireless LAN

� Compatible with light dimming

10/19/2015 10

� Phase 1: Optical wireless hotspots

� Phase 2: Multiuser multi-cell



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Current Projects: OWICELLS

� Optical wireless field in industry

� M2M Communication with very high-speed (1 Gbs) and low latency (<1ms)

10/19/2015 11

Optical Accespoint

Optical LinkFieldbus



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� Combining light and communications promises a futur e mass market

� But there is a long way to go

� Low-speed applications (indoor navigation, messaging) will appear first

� High-speed applications will probably follow

� Next steps for high speed

� Reduced form factor

� Smaller analog driver, reduced energy consumption for battery-powered uplink

� Bidirectional multi-user and multi-cell capabilities, low latency

� IEEE 802.15.7r1 standard aims to support these new features

Market Situation



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� Optical Camera Communications (OCC) for low speed� Using cameras in handsets or specific cameras in cars

� Low-speed communications with angular resolution (via pixels)

� High-density scenarios (e.g. traffic jam), localization using data base

� Many world records show potential for very high spe ed� Up to 5 Gb/s short distance so far using RGBY LEDs

� Several 100 Mb/s single color in wide beams at 2-3 m distance

� Short-range mobile scenarios

� IEEE 802.15.7r1 standardisation is ongoing� Efficient use of the available optical bandwidth

� High data rates (1 Mbit/s to 10 Gbit/s)

� Enhanced mobility support by adaptive transmission, handover, localization

� Call for Proposals was recently published

New optical wireless standard

19.10.2015 13High Speed Visible Light Communication in Real-timeFahim Nawabi


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IEEE 802.15.7r1 Roadmap

19.10.2015 14

2015

2016

2017

2018

CFA

Issued

CFA

Responses

Finalize T

RD

and Release C

FP

Hear C

FP

Proposals

Proposal m

ergers & D

raft D0

Draft D

1 & LB

1

Draft D

2 & LB

2

Draft D

3 & S

B1

Draft D

4 & S

B2

15.7r1 to SA

for publication

• Intent for proposal due Nov. 1, 2015, proposal due on Jan, 10



©

� Combining light and communications promises a future mass market

� New wireless technology, complementary besides radio

� R&D focus in HHI is on high-speed concepts in real-time

� 1 Gbit/s per wavelength with only 2 ms latency was recently demonstrated

� Future applications: Wireless backhaul, conference rooms, manufacturing

� HHI actively supports the ongoing IEEE 802.15.7r1 standardization

Conclusions



©

Thank you very much for your attention.

I am looking forward to answer your questions!

[email protected]

http://www.hhi.fraunhofer.de/vlc

1610/19/2015 16

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High Speed Visible Light Communication in Real-timevlca.net/site/wp/wp-content/uploads/2016/01/2015_10_26_Fraunhofer... · High Speed Visible Light Communication in Real-time Fahim