PRESENTED BY
A.V.NagaChary

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WIMAX
INTRODUCTION
 WiMAX stands for Worldwide Interoperability of Microwave Access.
 WiMAX will offer broadband wireless access at data rates of multiple Mbit/s to the end-user and within a range of several kilometers
 WiMAX is described in IEEE 802.16 Wireless Metropolitan Area Network (MAN) standard.
 WiMAX has been developed to replace broadband cable networks and to enable mobile broadband wireless access.
Standards Associated With WIMAX
IEEE 802.16:
 The IEEE 802.16 Working Group on Broadband Wireless Access Standards, which was established by IEEE Standards Board which, aims to prepare broadband Wireless Metropolitan Area Networks.
Range:
 The wide range of the WiMAX technology depends on the height of the antennas, if they are installed at the suitable position from where there is no barrier between the transmitter and receiver, and then we can get better range and service from it.
Data Rates
 The technology used for WiMAX is Orthogonal Frequency Division Multiplexing (OFDM).
Cost:
 The network costs of WiMAX will be likely to be higher than for 3G because of the reduced range and hence the necessity to build more cells.
 The subscriber subsidy costs may be lower if WiMAX is built into processor chips.
Timing:
 It is normally believed that WiMAX will enter into the market some five years after 3G is well established.
WIMAX DESIGN
 The design of the WiMAX is related with wired and wireless access networks.
 backhaul connects the WiMAX system to the network, it is not an integrated part of WiMAX system.
Backhaul:
o Backhaul is actually a connection system from the Access Point (AP) back to the provider and to the connection from the provider to the network.
o It is also possible to connect several base stations with one another by use of high speed backhaul microware links.
 Receiver
 A WiMAX receiver, which is also referred as Customer Premise Equipment (CPE), may have a separate antenna or could be a stand-alone box or a PCMCIA card that inserted in a laptop or a desktop computer.
TYPES OF WIMAX
 The WiMAX family of standards concentrate on two types of usage models a fixed usage model and a mobile usage model.
 Fixed Wimax
IEEE 802.16 standards provide advanced physical (PHY) layer techniques to achieve page link margins capable of supporting high throughput in NLOS environments.
 Mobile Wimax
The 802.16a extension uses a lower frequency of 2 to 11 GHz, enabling NLOS connections.
WIMAX SERVICES
1.Potential Services
 Interactive Services
 Streaming Services
 Back Ground Servies
2.Current Service
FUTURE OF WIMAX
 It is expected that WiMAX technology will be incorporated in notebook computers and allowing for urban areas and cities to become "metro zones" for portable outdoor broadband wireless access.
 IEEE 802.16f and IEEE 802.16g task groups are addressing the management interfaces for fixed and mobile operation.
 All of these improvements will help make WiMAX an even better Internet access solution for growing economies like that of India.
CONCLUSION
 When WiMAX chipsets are integrated into laptops and other portable devices, it will provide high-speed data services.
 WiMAX has been developed to replace broadband cable networks and to enable mobile broadband wireless access.
 WiMAX will support seamless mobility and technologies such as the technique for minimized power consumption of the terminal, fast page link adaptation.
 Providing data and telecommunications services.