Wi-Fi Technology PRESENTED By V.VIJAYKUMAR N.NIKHIL REDDDY P.PRAVEEN REDDY

GUIDENCE Jagapathi goud

CONTENTS

Introduction Wi-Fi Architecture Simulation IEEE Wireless standard Components Required for Wi-Fi Wi-Fi Configuration How a Wi-Fi Network works Applications of Wi-Fi Advantages/ Disadvantages of Wi-Fi Limitations of Wi-Fi Conclusion

AIM OF THE WI-FI

INTRODUCTION

Wireless Technology is an alternative to Wired Technology ,

which is commonly used, for connecting devices in wireless mode.

Wi-Fi (Wireless Fidelity) is a generic term that refers to the IEEE 802.11 communications standard for Wireless Local Area Networks (WLANs).

Wi-Fi Network connect computers to each other, to the internet and to the wired network.

ARCHITECTURE

Block Diagram Of SMC

SIMULATION:-

softwareActive-HDL (ALDEC):

Active-HDL is an integrated environment EDA tool designed for development of VHDL, Verilog, EDIF, state, block diagram, Simulation (wave form) models and design of Synthesizable IP-Cores.

IEEE Wireless StandardsWireless Standard

802.11b 802.11g 802.11a

Frequency Range 2.4 – 2.4835 GHz 2.4 – 2.4835 GHz 5.725 - 5.850 GHz

Max Speed 11 MBPS 54 MBPS 54 MBPS

Max Encryption 128 bit WEP 128 bit WEP 152 bit WEP

256 bit AES

Discrete Channels 3 3 8

Natively Compatible

802.11b, 802.11g 802.11b, 802.11g 802.11a

Potential user Entry level and home networks

Larger networks, small business

Large business concerned with security

Components required for Wi-Fi

A PC, laptop , running Windows 98 or above. A wireless PCMCIA card, or a wireless

adapter. Now a days all the latest LAPTOPS are coming with in built CENTRINO

A Network Interface Card (optional) - Only if a LAN connection is required

An Access Point - essentially a compact radio transmitter with an antenna that connects to a wired connection, such as an Ethernet, DSL, or Cable Network.

A valid internet connection.

Wi-Fi CONFIGARATION

How a Wi-Fi Network Works

Basic concept is same as Walkie talkies. A Wi-Fi hotspot is created by installing an access

point to an internet connection. An access point acts as a base station. When Wi-Fi enabled device encounters a hotspot

the device can then connect to that network wirelessly.

A single access point can support up to 30 users and can function within a range of 100 – 150 feet indoors and up to 300 feet outdoors.

Wi-Fi APPLICATION

Home Small Businesses or SOHO Large Corporations & Campuses Health Care Wireless ISP (WISP) Travellers

ADVANTAGES

Mobility Ease of Installation Flexibility Cost Reliability Security Speed

DISADVANTAGES

Many 2.4 GHz 802.11b and 802.11g Access points default to the same channel on initial startup, contributing to congestion on certain channels.

Wi-Fi networks have limited range. A typical Wi-Fi home router using 802.11b or

802.11g with a stock antenna might have a range of 45 m (150 ft) indoors and 90 m (300 ft) outdoors.

LIMITATION

Interference Degradation in performance High power consumption Limited range

CONCLUSION

For now Wi-Fi provides broad band internet access to specially outfitted PCs and Laptops. But in future may be hotspots be wireless.

By Wi-Fi our time and money are saved. The technologies have help Wi-Fi “Hotspots are

becoming more popular throught urban environment.”

REFERENCE

www.Wi-Fitechnology.com www.webopedia.com www.wavewireless.com