Transcript What`s the Future of Network?

Network Evolution in Coming 10 Years:
What's the Future of Network?
- Toward Optical Wireless Communications-
Fan Bai
Sato Laboratory, GITS, Waseda University
October 4th, 2014
Outline of Presentation
• Background: OWC- The Story So Far
• Issues with optical wireless communications
• Summary
October 4, 2014, PhD Academy, Waseda University
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Background: Communication Traffic–What Next?
• Annual global IP traffic will surpass the zettabytes
(1021bytes) threshold in 2016.—Cisco
• Big Data, Increasing smart-phone
-Heterogeneous services
-The last km and m
-High-quality, High-speed
-Mobility vs. Bit rates
-Energy-efficient, ect.
October 4, 2014, PhD Academy, Waseda University
http://www.ericsson.com/report2014
3
Background: OWC-What does it offer?
• FSO is the transmission of
modulated visible or infrared (IR)
Weather measurement
device
beams through the atmosphere to
FSO
antenna
obtain broadband communications.
• Unregulated bandwidth, high
Atmospheric effects
measurement antenna
FSO
antenna
security, flexibility, high capacity.
• Disadvantages:
-Atmospheric turbulence
-Weather conditions, ect.
Yoshinori Arimoto, NICT news, no.392, 2012
October 4, 2014, PhD Academy, Waseda University
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Background: OWC-What does it offer?
FSO
communication
10 Gbps
Data rate
1 Gbps
100 Mbps
10 Mbps
Optical fiber
communication
Full-optical
FSO system
100 Gbps
Visible light
communications
MM wave
communication
OpticalUWB
WLAN
WiMAX
WLAN
a/b/g
IrDA
PAN
Personal area
Communication
1 Mbps
Long distance
communication
Bluetooth
ZigBee
100 Kbps
1m
10 m
100 m
1 km
10 km
100 km
Communication distance
October 4, 2014, PhD Academy, Waseda University
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Issues with OWC-Roadmap
Wireless BB environment
Cooperation of
fiber comm.
WDM
1T
100G-Ether
Data rate
100G
SONET（trunk line)
10G-Ether standard
10G
1G-Ethernet standard
1G
FSO 100M
FTTH
100M
10M
1M
100K
FSO 10M
Indoor FSO
（P-MP）
FWA 1.5M
(22＆26G)
Video use
～1995
～2000
FWA 10M
(22＆26G)
IEEE802.11b
1.5M
FWA 50M
(5GHz)
FWA 46M
Indoor FSO （P-MP)
(26G)
11g
12M
ADSL
ISDN
October 4, 2014, PhD Academy, Waseda University
FTTH 1G
Radio on FSO
24M
CATV，cellular phone
2001
FSO10G
（WDM)
FSO 1G
11a
8M
FSO 2.5G
（Eye safe）
2002
Analog FSO system
2003
2004
2005
～2010
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Issues with OWC- Our Research Filed
- Diversity techniques: Spatial diversity (aperture averaging), ect.
- Modulation techniques: OOK, PPM, SCM(OFDM), Polarization
modulation, ect.
- Coding techniques: CDMA/OCDMA.
October 4, 2014, PhD Academy, Waseda University
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Issues with OWC-Challenges in FSO
WLAN AP
Internet
DWDM
RoFSO
Scintillation
FSO
Tx,Rx
OE/EO
FSO
Tx,Rx
River,
Road, etc
New
Wireless
Services
Fiber-rich Area
Cellular
WDM
Digital TV
OE, EO
Cellular
BS
WDM
DWDM
RoF
Mobile NW
OE
OE/E
O
OE/EO
Universal
Remote BS
Optical Free-Space
Digital
TV
WLAN
New
Wireless
Rural Area without Broadband Fiber infrastructure
• Hybrid network topology
• Low cost, high energy-efficient
• Novel transceiver structures
• Seamless connection
• Coherent optical techniques
• Multiple-hybrid-services
• Optical source/device material
• Limited to transmission distance
October 4, 2014, PhD Academy, Waseda University
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Issues with OWC- OWC world
https://www.northumbria.ac.uk/
• Space: Indoor, outdoor, near-earth, deep space.
• Wired/wireless/optics
October 4, 2014, PhD Academy, Waseda University
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Summary
• OWC focus on providing a broadband last mile access,
however, faces many challenges in its implementation.
• Variations of solutions have been proposed to
overcome these challenges.
• Our study develop a framework for next generation FSO
systems based on mature wired/wireless techniques.
October 4, 2014, PhD Academy, Waseda University
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Thank you for your attention !
Q&A