Rajamahendri Institute Of Engineering & Technology

SEMINAR ON

WIMAX

Presented by,M.S.N.Swetha,09MD1A0440.

CONTENTS:

Introduction

Architechture Of Wimax

Working Of Wimax

Potential Wimax Applications

Chip Advances

Merits & Applications Of Wimax

Conclusion

INTRODUCTION:

Wi-Max (worldwide Interoperability for Microwave Access) is

the recently approved IEEE 802.16 wireless metropolitan area

network (MAN) standard for wireless access.

COMPONENTS OF WIMAX:

A WiMAX system consists of two parts:

1)WI MAX tower as transmitter

2)WIMAX receiver.

• A WiMAX tower: similar in concept to a

cell phone tower -A single WiMAX tower can

provide coverage to a very large area -- as big as

3,000 square miles(~8,000 square km).

A WiMAX receiver :

• The receiver and antenna could be a small box or they could be built into a laptop the way WiFi access is today.

• Wimax receiver is also known as Wimax CPE• CPE stands for customer premise equipment

A WiMAX tower station can connect directly to the Internet using a high-bandwidth, wired connection (for example, a T3 line). It can also connect to anotherWiMAX tower using a line-of-sight, microwave link. This connection to a second tower (often referred to as a backhaul), along with the ability of a single tower to cover up to 3,000 square miles, is what allows WiMAX to provide coverage to remote rural areas.

WORKING OF WIMAX:

POTENTIAL WiMax APPLICATIONS:

• The WiMax 802.16 will provide solution to the following multiple broadband segments.

Cellular backhaul: The robust bandwidth of 802.16 technology makes it an excellent choice for backhaul for the commercial enterprises, such as those providing ‘hotspots’, as well as for point –to-point backhaul applications. Broadband to underserved and remote areas:WiMax is a natural choice for under served rural and outlying areas with a low population density.

IEEE 802.16 Specifications:

• Range - 30-mile (50-km) radius from base station• Speed - 70 megabits per second• Line-of-sight not needed between user and base station• Frequency bands - 2 to 11 GHz and 10 to 66 GHz (licensed and unlicensed

bands)

Network scale:

TECHNOLOGY CONSIDERATIONS:

• The main obstacles to long distance wireless communications are limitations on battery power and poor power efficiency.

• Nokia is working on battery and handset chip designs towards this end. Intel is increasingly involved in next generation battery and processing power for mobile devices, including digital radios that can intelligently tune in to the most efficient network like Cellular,Wi-Fi,Bluetooth,WiMax.

Merits Of WiMAX:• Coverage• High Speed• Multi functionality• Cheap network• Potential and development• Ultra wide band• Home land security

De Merits Of WiMAX:• Power consuming• Data rate• High cost

Applications:

• Backhaul• Broad Band for developing countries

Future of WiMAX:

• Intel Paves the Way. Intel will start making their Centrino laptop processors WiMAX enabled in the next two to three years. This will go a long way toward making WiMAX a success. If everyone's laptop already has it (which is predicted by 2008), it will be much less risky for companies to set up WiMAX base stations. Intel also announced that it would be partnering with a company called Clearwire to push WiMAX even further ahead. Clearwire plans to send data from WiMAX base stations tosmall wireless modems.

Thankyou……..

Queries……?