Future of Optical Wireless Network Evolution

Report
Future of Optical Wireless
Network Evolution
Khemry Khourn
Shimamoto Laboratory
Waseda University
Oct 4th, 2014
PhD Academy
Table of Content
 Introduction
 OW vs. RF
 OWC Application Areas
 Proposed Studies
 Current Challenges of OW Systems
 What’s Next for OW Systems
2
Introduction
Standardized &
Interoperable
Architectures
Demand for Greater
Integration &
convergence
IoT and M2M
Mobile Communication & Networks
towards 5G
Network
of
the Future
Satellite Networks
Optical Networks
Continuous Exponential
Growth of Traffics &
Technologies
3
Software Defined
Networking (SDN)
OW vs. RF Systems
RF
OW
Using radio waves and antennas
Using light and free space optical
transceivers
Suffers from multipath fading
Doesn’t suffer from multipath fading
Prone to other RF devices
Immune to interference from other
RF devices
Requires NLOS
Requires LOS
Attenuates to rain
Attenuates to Fog
No affect on human’s eyes
Operates under strict eye safety
regulation
Licensed spectrum
Unlicensed spectrum
Cheaper components
Consume less electrical power
4
RF vs. OW Technologies
State-of-the Art Commercial RF And OW Technologies
Source: [1]
5
Application Areas of OW Systems
Source: [1]
6
Proposed Studies 1
Optical Wireless Identification Scheme
employing Thinfilm Corner Cube Retroreflector
7
Proposed Studies 2
Train Ticket Gate System employing
Optical Wireless Communications
8
Proposed Studies 3
Indoor Optical Wireless Network for Autonomous Patient Monitoring
9
Current Challenges of OW Systems
• Mitigating Link Misalignment
• Error Correction Coding
• Efficient Transmission Techniques & Signal Modulation
• Experimental Works and Prototypes
• Improving Link Availability for Outdoor Communication
• Appropriate Control Protocols
Source: [1]
10
What’s Next for OW Systems
Next Generation Optical Wireless Communications:
• All-optical connection technologies
• Extension of optical fiber, RoF and RoFSO systems
• Seamless connection of FSO and fiber systems without
O/E conversion
• Ultra-high speed/huge capacity optical wireless network
• Provide broadband heterogeneous wireless services
• Greener, more dynamic and cognitive OW networks
Source: [1]
11
References
1.
Deva K. B., Anthony C. B., Christopher C. D., Steve H. and Konstantinos Y., “A review of
communication-oriented optical wireless systems”, EURASIP Journal on Wireless
Communications and Networking 2012.
2.
Alfredo V. and Werner M., “Next Generation Optical Networks Enabler for Future
Wireless and Wireline Applications”, White Paper of Next Generation Optical Networks,
available at http://www.phorce21.net/download/Internetversion_P21NetWorks_WhitePaperOnNGON_2011-11-07.pdf
3.
Khemry K., Jiang L. and Shimamoto S., “Performance Evaluation of Optical Wireless
Identification Scheme employing Thinfilm Corner Cube Retroreflector”, IEEE 24th
International Symposium on Personal, Indoor and Mobile Radio Communications,
London, 2013.
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Suggestions & Comments
Thank you very much
for your attention.
13

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