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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