07-06-2010, 12:52 PM
wimax presentation.ppt (Size: 1.33 MB / Downloads: 344)
WIMAX
The Next Frontier BroadBand Wireless
Presented By:
By
Abdul Raheem
K.Bala Balaji
INTRODUCTION :
WiMAX is a coined term or acronym meaning Worldwide Interoperability For Microwave Access .
WiMax is a new standard being developed by the IEEE that focuses on solving the problems of point to multipoint broadband outdoor wireless networks.
It has several possible applications, including last mile connectivity for homes and businesses and backhaul for wireless hot spots.
Wimax will offer fixed, nomadic and mobile wireless broadband connectivity without direct line-of-sight access to a base station.
Technical Details:
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)
Defines both the MAC and PHY layers and allows multiple PHY-layer specifications
Different IEEE standards:
Transmitter &Receiver:
A WiMAX 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 PCMCIA card or they could be built into a laptop the way WiFi access is today.
Comparison between WiFi & WiMax:
Advantages:
High data rate (50Mbits/sec or higher) Long range (10 miles or more) Low risk of interference.
Can work without line of sight. Low-cost client radios
Low entry cost for service providers, so lots of competition and wide coverage likely.
Smooth upgrade path from fixed to mobile access Low risk of interference .
Advanced IP-based architecture.
Applications:
Intel announced that it has begun sending WiMax chipsets to equipment manufacturers, which are planning to ship products to customers.
Data centric devices: notebooks, PDAs, Ultra Mobile PCs
CE devices: games consoles, MP3 players
Voice and voice/data devices: cellular phones, smart phones
Vertical applications devices: CCTV cameras, in-vehicle devices.
The big name corporations have
alreadly comeup with a WiMax base
station and WiMax access point for
exterior use.
Redline communicationâ„¢s Wimax
access point
Growing popularity of Wimax: