1. WIMAX TECHNOLOGY Submitted By: Pratyush Kumar Sahu 1241016303 ECE-F

2. Contents Introduction to WiMAX Features of WiMAX Technology
Global Wireless Standards
Types of WiMAX Connections
WiMAX Network
WiMAX vs Wi-Fi
Difficulties in Implementation
Problems to be solved
Conclusion

3. Introduction What is WiMAX ?

4. What is WiMAX ?
WiMAX stands for Worldwide Interoperability for Microwave Access.
WiMAX is like Wi-Fi & 3G Service.
It provides the range of 3G-Service with speeds in the range of Wi-Fi system.
WiMAX refers to interoperable implementations of the IEEE  Wireless LAN standards certified by the WiMAX Alliance.

6. IEEE standards
(10-66 GHz, line-of-sight, up to 134Mbit/s)
(minimizing interference between coexisting WMANs)
802.16a (2-11 Ghz, Mesh, non-line-of-sight)
802.16b (5-6 Ghz)
802.16c (detailed system profiles)

8. Features Of WiMAX
WiMAX physical layer uses OFDM (orthogonal Frequency Division Multiplexing Technique, which allows resistance to multipath components
The data rates can go as high as 74Mbps when used a 20MHz
WiMAX supports TDM,FDM.
It uses AES Technique for encryption of data.

9. Types of WiMAX Connections
Line of Sight Communication
Non Line of Sight Communication

10. WiMAX Cell Site Design
One of the most important technical and business issues of any wireless technology is efficiently (cost and performance) providing coverage and capacity, while avoiding the build-out of a large number of new base stations.
Path loss, shadow margin, environmental effects, and morphology are important factors when planning for an optimum coverage. The morphology and physical surroundings of a cell site play a very important role in determining the cell footprint.

11. WiMAX Network WiMAX Base Station WiMAX Receiver WiMAX Backhaul

12. It has a coverage area up to a radius of 6 miles.
WiMAX Base Station
The base station consists of a WiMAX tower similar to a cell- phone tower.
It has a coverage area up to a radius of 6 miles.
Any wireless compatible device within the coverage area would be able to access the Internet.
The MAC layer present allocates downlink and uplink bandwidth for the subscribers according to their signal capacity and need.

13. WiMAX Receiver
It is also referred as CPE (Consumer Premises Equipment).
Its work is similar to any device which read the Wi-Fi present in the area.

14. WiMAX Backhaul
The link between two different Base Stations or the link between a Base Station and the core network (generally IP network) is called Backhaul.
The link between two different Base stations is generally Line of Sight communication.

15. Difference Between WiMAX and Wi-Fi
It is used for deploying Wireless Broadband Networks.
It is used for deploying Wireless LAN networks.
It uses 2-11 GHz frequency.
It uses 2.5 GHz or 5 GHz frequency.
It has an adjustable Channel Bandwidth.
It has a fixed Channel Bandwidth of 25MHz.
It uses Full Duplex Communication Protocol.
It uses Half Duplex Communication Protocol.
It uses 3DES/AES encryption.
It has optional RC4 encryption.
Both of them uses QPSK, BPSK modulation techniques for transmission.

16. Distance Dependent Decay of Power Doppler Effect Spectral Scarcity
Difficulties in Implementation
Distance Dependent Decay of Power
Doppler Effect
Spectral Scarcity

17. Problems to be Solved High Speed Data Access (~50Mbps) to end users
High Quality of Service
Stationary Devices-/Household Devices should get access even to remote locations
Mobile Devices should get the same speed even if they are moving with high velocity.
To be a successful technology it should provide better performances than current alternatives such as Wi-Fi and 3G.

18. Conclusion
WiMAX is a technology which has not been a lot of importance in the near past.
Its still many-folds faster than Wi-Fi technology or 3G Technology and if implemented properly and planned according to the needs can solve the Network issue for many extreme areas.

19. References
Gerard Smyth, “Wireless Technologies and e-Learning:Bridging the Digital Divide”, Intel Corporation, December2006.
M. Paolini, “Mobile WiMAX: The Best Personal Broadband Experience!” WiMAX forum, June pp. 6.
White Paper,” IEEE a Standard and WiMAX Igniting Broadband Wireless Access”, WiMAX Forum.
G. Cayla, S. Cohen and D. Guigon, “WiMAX an Efficient Tool to Bridge the Digital Divide,” WiMAX Forum, November, 2005, pp. 2.

20. THANK YOU