FIWI Fiber Wireless

FIWI Fiber WirelessFiber Wireless

CONTENTSINTRODUCTIONNEEDOPTICAL ACCESS NETWORKSPONS & AONSWIRELESS ACCESS NETWORKSADVANTAGES & DISADVANTAGESCONCLUSIONSREFERENCE

INTRODUCTION

FIWI.? Combination of Optical Fiber and Wireless communication.

2 technologies used to implement fiber-wireless (FiWi) networks: Free space optical (FSO), also known asoptical wireless (OW) Radio & fiber (R&F)

NEED?

Minimize the energy consumption of the whole networkLess delayHigh speed Reduce complexityCarry more dataLonger lifeReplace copper lines

OPTICAL ACCESS NETWORKS

PONS Point to multipoint fiber Optical splittersConnect OLT at service provider central office and no. of optical networkIt serve up to 32 users,Low building cost.

Disadvantage Less range than AON [10-20km]data transmission speed may slow down during peak usage of timePONS & AONSAONS

Can serve a virtually unlimited number of subscribers over an 80km distance.Range up to 70km.Uses Ethernet electronics.Active Ethernetprovides dedicated bandwidth to each subscriber, regardless of network population. Speeds are most commonly 100Mbpsto 1Gbps.Disadvantage Require at least one switch for every 48 subscribersrequire powerWIRELESS ACCESS NETWORKSWi-Fi

WiMAX

providing up to 11/54 Mbps data rate, The greatest enhancement at the MAC layer is Frame Aggregationwhich allows multiple frames, destined to the same receiver, to be added in a larger frame and to be acknowledged by one single ACK packet reducing in this way the overhead introduced in the network.

providing up to 75 Mbps data ratesupport for mobile users in a range of 5-15 Km with maximum theoretical rates up to 30 Mbps.FIWI R&F ARCHITECTURES

RESEARCH CHALLENGES

Flexible multi-block OFDM [MB-OFDM] frame structure for fi-wi networksThis mechanism makes MB-OFDM a flexible compromise between the multi-carrier and single-carrier transmissions, so the PAPR of the MB-OFDM signal could be reduced, and the sensitivity to CFO could also be alleviatedADVANTAGESLow implementation costs.Mobility support.High speed core networks.More number of mobile broadband subscribers.

DISADVANTAGES

CONCLUSIONSorder to provide high broadband accessibility to both fixed andmobile clients since the huge capacity of optical fibers can be combined with the flexibility that wireless networks offer.support of peer-to-peer communication and multicasting which both save network resources

REFERENCET. Tsagklas and F. N. Pavlidou.Navid Ghazisaidi and Martin Maier, Optical Zeitgeist Laboratory, INRS.Yan Li, Jianping Wang, Member, IEEE.Mohamed A. Ali, Georgios Ellinas, Hasan Erkan.Martin Maier, Navid Ghazisaidi, and Martin Reisslein.Navid Ghazisaidi, Martin Maier, Senior Member.Linglong Dai, Member, IEEE, Zhengyuan Xu, Senior Member, IEEE.

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