Future of Optical Wireless Network Evolution Khemry Khourn Shimamoto Laboratory Waseda University Oct 4 th , 2014 PhD Academy
Dec 21, 2015
Future of Optical Wireless Network Evolution
Khemry KhournShimamoto LaboratoryWaseda UniversityOct 4th, 2014PhD Academy
Table of Content
2
Introduction
OW vs. RF
OWC Application Areas
Proposed Studies
Current Challenges of OW Systems
What’s Next for OW Systems
3
Introduction
Network of
the Future
IoT and M2M
Software Defined Networking (SDN)
Standardized & Interoperable Architectures
Continuous Exponential Growth
of Traffics & Technologies
Satellite Networks
Optical Networks
Mobile Communica-tion & Networks
towards 5G
Demand for Greater Integration & convergence
4
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
5
RF vs. OW Technologies
State-of-the Art Commercial RF And OW Technologies
Source: [1]
6
Application Areas of OW Systems
Source: [1]
7
Proposed Studies 1
Optical Wireless Identification Scheme employing Thinfilm Corner Cube
Retroreflector
8
Proposed Studies 2
Train Ticket Gate System employing Optical Wireless Communications
9
Proposed Studies 3
Indoor Optical Wireless Network for Autonomous Patient Monitoring
10
Current Challenges of OW Systems
Source: [1]
• Mitigating Link Misalignment
• Error Correction Coding
• Efficient Transmission Techniques & Signal
Modulation
• Experimental Works and Prototypes
• Improving Link Availability for Outdoor
Communication
• Appropriate Control Protocols
11
What’s Next for OW Systems
Source: [1]
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
12
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.
13
Suggestions & Comments
Thank you very much for your attention.