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Fiber-Wireless (FiWi)Access NetworksPresenter:
1.Muhammad Mazuan Harimon
2.Syamsul Nazmi Mohd Saad
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1. OBJECTIVES 2. Research Concept
4. FiWi Architecture(a) RoF
(b) R&F
6. RiseTime Budget
4. Design Specification
7. Power Budget 8. Conclusions
9. References
3. FiWi Advantages
5. RoF and R&FNetwork Testbeds
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Objectives
Definition :
To review & discuss the technology of fiber-wireless (FiWi)access networks
Apart from that, we aim at:
a) To show the RoF and R&F designb) To calculate the Power Budget and RiseTime Budget
Highlights key enabling optical as well as wireless
technologies and explains their role in emerging FiWinetworks.
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FiWi Network Concept
Deployment of RoF and R&F
Able to consolidate optical & wireless access networks(usually run independent of each other)
Combining the huge amount of available bandwidth ofoptical networks and ubiquity and mobility of wirelessaccess networks
Objectives project research:
(a) reduce the cost(b) reduce complexity
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FiWi Network Advantages
Good performance in longevity
Low maintenance due using fiberForm powerful platform for the support and creation ofemerging
More attractive than standalone fiber
Cost saving by combining fiber with wirelesstechnologies devices
Could extend the coverage without imposing stringentlimits on the size of optical backhaul
Increase the wireless capacity and reduce access pointcomplexity through centralized management
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FiWi Architecture(a) Radio-Over-Frequency (RoF)
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RoF Networks Testbed
Moving cell-based RoF network architecture for train passenger
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RoF Design Specification
Source (CO) Fiber Detector (RAUs)
HAMAMATSU Laserdiode L9826 series(2.5Gbps)
Wavelength=1310nm
Spectral width= 2nmRise time= 200psPower output= 2mWBit rate= 1.485Gbps
Corning SMF-28ePhotonic Fiber
Attenuation=0.35dB/km
Zero dispersionwavelength(silica-based glassesmade)Length= 10km
Fiber Optic SFPDFB 1310nm OC-48 LightwaveTransceiver withAPD Photodiode
Rise time=0.15nm
Ring topology access network with 4connectors has 1.0dB lossper connector.
The distance between Central Office (CO) to Remote AntennaUnits (RAU) is 10km apart.
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Rise Time Budget
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Power Budget
Total power launched into fiber
= 2mW = 3dBm
Losses :
(a) Fiber attenuation= 0.35dB/km x10km
= 3.5dB(b) Connector = 1dB x 4 = 4dB
Power available at detector (RAU)= 3dBm 3.5dB 4dB
= -4.5dBm
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(b) Radio and Fiber (R&F)
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R&F Design Specification
Source (OLT) Fiber Detector (ONU)
Photonic DFB Laser
Diode Data SheetWavelength=1550nmSpectral width= 1nmRise time= 0.2ns
Power output= 2mWBit rate= 1.0 Gbps
Corning SMF-28e
Photonic Fiber
Attenuation=0.2dB/km
Dispersion=18ps/nmkmLength= 10kmRise time=0.54ns
EMCORE InGaAs/In
PIN Photodiode8413-1150 DataSheet
Rise time=24ps
The distance between Ethernet passive optical networks (EPON)to Optical Line Terminal (OLT) is 10km apart.
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R&F Rise Time Budget
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R&F Power Budget
Total power launched into fiber
= 2mW = 3dBmLosses :
(a) Fiber attenuation= 0.2dB/km x10km
= 2.0dB(b) Connector = 1dB x 4 = 4dB
Power available at detector (RAU)
= 3dBm 2.0dB 4dB= -3.0dBm
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Conclusions
By converging optical and wireless access technologies,hybrid FiWi access networks hold great promise tosupport a plethora of future and emerging broadbandservices and applications on the same infrastructure.
We highlight the two recent RoF and R&F testbeds whichconnect to wireless access networks
Integrates two Ethernet passive optical networks(EPONs) and IEEE 802.11g WLAN-bas wireless meshnetwork (WMN) on R&F
The video transmission sharply deteriorates for an
increasing number of wireless hops.However, EPON and WMN networks independentlyrunning from each other become poor networkperformance.
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References
1. Cristina Lim, M.Bakaul, and Yizhuo Yang, Fiber-
Wireless Networks and Subsystem Technologies, Journalof Lightwave Technology
2. N.Ghazisaidi and M.Maier, Fiber-Wireless (FiWi)Access Networks: Challenges and Opportunities, OpticalZeitgeist Laboratory
3. Ahmad R. Dhaini, Chadi M. Assi, DynamicWavelength and Bandwidth Allocation in HybridTDM/WDM EPON Networks
4. Corning SMF-28e Photonic Fiber Data Sheet
5. Laser Diode L9826 series Data Sheet6. Fiber Optic SFP DFB 1310nm OC-48 LightwaveTransceiver with APD Photodiode Data Sheet
7. Photonic DFB Laser Diode Data Sheet