fiwi

FIWI Fiber Wireless

Naveen4SF10EC062

Dept. Of E&C 2013-2014

Sahyadri College Of Engineering And Management

Fiber Wireless

CONTENTS

• INTRODUCTION

• NEED

• OPTICAL ACCESS NETWORKS

• PONS & AONS

• WIRELESS ACCESS NETWORKS

• ADVANTAGES & DISADVANTAGES

• CONCLUSIONS

• REFERENCE

INTRODUCTION

• FIWI…….?

Combination of Optical Fiber and Wireless communication.

2 technologies used to implement fiber-wireless (FiWi) networks:

• Free space optical (FSO), also known as

optical wireless (OW)

• Radio & fiber (R&F)

NEED?

• Minimize the energy consumption of the whole network

• Less delay• High speed • Reduce complexity• Carry more data• Longer life• Replace copper lines

OPTICAL ACCESS NETWORKS

PONS • Point to multipoint fiber • Optical splitters• Connect OLT at service provider central

office and no. of optical network• It 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 time

PONS & AONS

AONS• Can serve a virtually unlimited number of subscribers over an 80km distance.• Range up to 70km.• Uses Ethernet electronics.• Active Ethernet• provides dedicated bandwidth to each subscriber, regardless of network

population. Speeds are most commonly 100Mbpsto 1Gbps.

Disadvantage • Require at least one switch for every 48 subscribers—require power

WIRELESS ACCESS NETWORKS

• Wi-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 alarger frame and to be acknowledged by one single ACK packet reducing inthis way the overhead introduced in the network.

• providing up to 75 Mbps data rate• support 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 networks• This 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 alleviated

ADVANTAGES

• Low implementation costs.

• Mobility support.

• High speed core networks.

• More number of mobile broadband subscribers.

DISADVANTAGES

CONCLUSIONS

• order to provide high broadband accessibility to both fixed and

• mobile 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

REFERENCE• T. 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.

Thank you