wifi&Wimax

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Presentation Transcript

Slide 1:

Presentation By B.A.Muralitharan II MCA Wi-fi & Wi-MAX Velammal College of Engineering & Technology Madurai-625009

Slide 2:

Agenda Introduction Wireless Communication OFDM Infrastructure Of Wimax Wimax technology Conclusion

Slide 3:

Wi reless Fi delity (Wi-Fi) Welcome to the World of Wireless A radio technology that networks the devices. Refers to wireless LAN products based on the IEEE 802.11b specification Provides easy connections to the internet and business networks while traveling The main attractive feature of this technology is that it can provide wireless broadband connection within a specific geographic boundary.

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OPERATING MODES Infrastructure Mode AD HOC Mode LOCATING HOTSPOTS There are many WiFi hotspots now available in public places like restaurants,hotels , libraries and airports.

Slide 5:

It is one of the most promising broadband wireless access technology for next generation all-IP networks. The 802.16 family of standards is officially called Wireless MAN, it has been dubbed “WiMAX” form World wide Interoperability for Microwave Access. Introduction

Slide 6:

Broadband wireless accesses( bwa ) The increased demand on multimedia services let to the need for BWA (Broadband Wireless Access) This let to the appearance of WiMAX technology Advantages of BWA: Fast connection (several Mbps/user) Relatively cheap (no cable infrastructure) Not limited by location (wireless links)

Slide 7:

How it works WiMAX works as point to multipoint system, which is made up of base station and subscriber equipment

Slide 8:

Wireless communication LOS- Line Of Sight NLOS- Non Line Of Sight

Slide 9:

ofdm Orthogonal frequency division multiplexing is a technology based on multicarrier modulation. OFDM possesses multiple carriers which are mutually orthogonal. Theses subcarriers are closely placed to each other on the frequency domain, & each sub carrier is modulated & demodulated separately.

Slide 10:

Wimax Infrastructure A WIMAX tower: similar in concept to a cell-phone tower. A single WIMAX tower can provide coverage to a very large area (~10 km).

Slide 11:

Wimax routers A WIMAX receiver : The receiver and antenna could be a small box or PCMCIA card, or could be built into a laptop. NEC Japan has announced its new and compact WiMAX router with embedded wireless LAN, it is dubbed the NEC WiMax Router Any wireless node within the coverage area would be able to access the Internet

Slide 12:

WiMAX, LTE, MESH Wireless Network Portable or fixed mounted cameras can be used to capture video or still images of a vehicle accident to send to emergency room doctors. Doctors at the emergency room can see the vehicle and get an understanding of the mechanism of injury to guide their treatment of the victim. E nables real time monitoring of Patients on the way to the Hospitals Vehicle accident

Slide 13:

WiMAX, LTE, MESH Wireless Network Remote medical diagnosis Cameras inside ambulances can capture video of patients to send to emergency room doctors for consultation. Doctors at the emergency room can help guide treatment of the victim, especially important for time critical treatment. Remote diagnosis can shorten the time before treatment which can potentially save lives and shorten recovery time

Slide 14:

Wimax speed

Slide 15:

Security … EAP authentication Key Binding Device and User authentication capability

Slide 16:

conclusion Wi-Fi & Wi-Max is an alternative to cable and DSL for last-mile broadband access Provide high-speed mobile data and telecommunications services using WiMAX.

Slide 17:

Thank You…