Wifi

602 views
567 views

Published on

Published in: Education, Technology, Business
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
602
On SlideShare
0
From Embeds
0
Number of Embeds
0
Actions
Shares
0
Downloads
49
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Wifi

  1. 1. Presentation on By,Ishmeet Singh Sachdeva
  2. 2. •INTRODUTION•PEER TO PEER STRUCTURETOPOLOGY•HOW IT WORKS•IEEE-802.11A•IEEE-802.11B•IEEE-802.11G•APPLICATIONS•LIMITATIONS•ADVANTAGES 3
  3. 3. INTRODUCTION•WIFI- underlying technology of wireless local area networks (WLAN) isbased on the IEEE 802.11 specifications.•Wi-Fi was intended to be used for mobile computing devices, suchas laptops, in LANs, but is now often used for increasingly moreapplications, including Internet access, gaming, and basicconnectivity of consumer electronics such as televisions and DVDplayers.•A person with a Wi-Fi device, such as a computer, telephone, orpersonal digital assistant (PDA) can connect to the Internet when inproximity of an access point.•Wi-Fi also allows connectivity in peer-to-peer mode, which enablesdevices to connect directly with each other. This connectivity mode isuseful in consumer electronics and gaming applications.•FUTURE OF WIFI- There are even more standards in development that willallow Wi-Fi to be used by cars in highways in support of an IntelligentTransportation System to increase safety, gather statistics, and enable mobilecommerce (IEEE 802.11p). 4
  4. 4. •A wireless network uses radiowaves, just like cell phones,televisions and radios do. In fact,communication across a wirelessnetwork is a lot like two-way radiocommunication.•To access this type of connection onemust have wireless adapter on theircomputers. Wi-Fi provides wirelessconnectivity by emitting frequenciesbetween 2.4GHz to 5GHz based onthe amount of data on the network. 5
  5. 5. •AP IS NOT REQUIRED•CLIENT DEVICESWITHIN A CELL CANCOMMUNICATEDIRECTLY•IT IS EASY FOR SETTINGUP A WIRELESS NETWORKQUICKLY AND EASILY 6
  6. 6. •Alike cell phones, a Wi-Fi network makes use of radio waves to transmitinformation across a network•The computer should include a wireless adapter that willtranslate data sent into a radio signal. This same signal willbe transmitted, via an antenna, to a decoder known as therouter.•Once decoded, the data will be sent to the Internet through awired Ethernet connection.•As the wireless network will work as a two-way traffic, thedata received from the Internet will also pass through therouter to be coded into a radio signal that will be receipted bythe computers wireless adapter. 7
  7. 7.  INTRODUCED IN 2001 OPERATES AT 5GHZ LESS POULAR 54Mbps (THEORITICAL SPEED) 15 – 20 Mbps (ACTUAL SPEED) 50 – 75 FEET DISTANCE RANGE MORE EXPENSIVE 8
  8. 8. •APPEAR IN LATE 1999•OPERATED AT 2.4 Ghz RADIO SPECTRUM•11Mbps THEORITICAL SPEED WITHIN 30mRANGE•4 -6 Mbps ACTUAL SPEED•100-150 FEET RANGE•MOST POULAR LESS EXPENSIVE 9
  9. 9. •INTRODUCED IN 2003•HAS BOTH THE FEATURES OF A AND B•100 – 150 FEET RANGE•54Mbps SPEED•2.4 GHZ RADIO FREQUENCY 10
  10. 10. •HOME•SMALL BUISNESSES OR SOHO•LARGE CORPORATION AND CAMPUSES•HEALTH CARE•WIRELESS ISP•TRAVELLERS 11
  11. 11. •INTERFERENCE•DEGREDATION IN PERFORMANCE•HIGH POWER CONSUMPTION•LIMITED RANGE 12
  12. 12. •MOBILITY•EASE OF INSTALLATION•FLEXIBILITY•COST•RELIABILITY•SECURITY•ROAMING•SPEED•USE UNLICENSED PART OF RADIOSPECTRUM 13

×