1. Wi-Fi Technology
PRESENTED
By
V.VIJAYKUMAR
N.NIKHIL REDDDY
P.PRAVEEN REDDY
GUIDENCE
Jagapathi goud

2. 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

3. AIM OF THE WI-FI

4. 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.

5. ARCHITECTURE

6. Block Diagram Of SMC

7. SIMULATION:-

8. software
Active-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.

9. IEEE Wireless Standards
Wireless
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

10. 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.

11. Wi-Fi CONFIGARATION

12. 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.

13. Wi-Fi APPLICATION
 Home
 Small Businesses or SOHO
 Large Corporations & Campuses
 Health Care
 Wireless ISP (WISP)
 Travellers

14. ADVANTAGES
 Mobility
 Ease of Installation
 Flexibility
 Cost
 Reliability
 Security
 Speed

15. 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.

16. LIMITATION
 Interference
 Degradation in performance
 High power consumption
 Limited range

17. 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.”

18. REFERENCE
 www.Wi-Fitechnology.com
 www.webopedia.com
 www.wavewireless.com