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.