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Network Evolution in Coming 10 Years: What's the Future of Network? - Toward Optical Wireless Communications-. Fan Bai Sato Laboratory, GITS, Waseda University October 4 th , 2014. Outline of Presentation. Background: OWC- The Story So Far Issues with optical wireless communications
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Network Evolution in Coming 10 Years: What's the Future of Network? - Toward Optical Wireless Communications- Fan BaiSato Laboratory, GITS, Waseda UniversityOctober 4th, 2014
Outline of Presentation • Background: OWC- The Story So Far • Issues with optical wireless communications • Summary
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. http://www.ericsson.com/report2014
Weather measurement device FSO antenna Atmospheric effects measurement antenna FSO antenna Background: OWC-What does it offer? • FSO is the transmission of modulated visible or infrared (IR) beams through the atmosphere to obtain broadband communications. • Unregulated bandwidth, high security, flexibility, high capacity. • Disadvantages: • -Atmospheric turbulence • -Weather conditions, ect. Yoshinori Arimoto, NICT news, no.392, 2012
Full-opticalFSO system Optical fiber communication 100 Gbps FSO communication 10 Gbps Visible light communications MM wave communication 1 Gbps Optical WLAN UWB IrDA PAN Data rate 100 Mbps WiMAX WLANa/b/g 10 Mbps Personal areaCommunication Long distance communication Bluetooth 1 Mbps ZigBee 100 Kbps 1 km 100 km 1 m 10 m 100 m 10 km Communication distance Background: OWC-What does it offer?
Cooperation of fiber comm. Wireless BB environment 1T WDM 100G 100G-Ether 10G SONET（trunk line) 10G-Ether standard FSO 2.5G （Eye safe） FSO10G（WDM) 1G Data rate 1G-Ethernet standard FSO 1G FWA 50M (5GHz) 100M FTTH 1G FWA 46M (26G) FSO 100M Indoor FSO （P-MP) FTTH 10M FWA 10M (22＆26G) 11g Indoor FSO（P-MP） 11a Radio on FSO FSO 10M 12M 24M 8M 1M IEEE802.11b ADSL 1.5M FWA 1.5M (22＆26G) 100K CATV，cellular phone Video use Analog FSO system ISDN ～1995 ～2000 2001 2002 2003 2004 2005 ～2010 Issues with OWC-Roadmap
Issues with OWC- OurResearch Filed • Diversity techniques: Spatial diversity (aperture averaging), ect. • Modulation techniques: OOK, PPM, SCM(OFDM), Polarization modulation, ect. • Coding techniques: CDMA/OCDMA.
DWDM RoF DWDM RoFSO Cellular Mobile NW Cellular BS Scintillation Digital TV FSO Tx,Rx FSO Tx,Rx Digital TV WDM OE, EO WDM WLAN WLAN AP River, Road, etc Internet New Wireless Universal Remote BS New Wireless Services Optical Free-Space Fiber-rich Area Rural Area without Broadband Fiber infrastructure OE/EO OE OE/EO OE/EO Issues with OWC-Challenges in FSO • Hybrid network topology • Novel transceiver structures • Coherent optical techniques • Optical source/device material • Low cost, high energy-efficient • Seamless connection • Multiple-hybrid-services • Limited to transmission distance
Issues with OWC- OWC world https://www.northumbria.ac.uk/ • Space: Indoor, outdoor, near-earth, deep space. • Wired/wireless/optics
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.
