9 March 2018

WiFi technology

Wi-Fi network uses radio technologies to transmit and receive data at high speed. 

 These are governed by some set of the standard given below :
  1. IEEE 802.11b
  2. IEEE 802.11a
  3. IEEE 802.11g
1. IEEE 802.11b
  • It was formulated in the year 1999
  • It operates at 2.4 GHz radio spectrum
  • The actual speed is 4-6 Mbps
  • It supports a range from 100-500 feet
  • It is a very popular Wi-Fi technology and is the least expensive
  • It has a theoretical speed of 11 Mbps within 30 m range
2. IEEE 802.11a
  • It was introduced in 2001
  • It operates at 5GHz with theoretical speed 54 Mbps
  • It is the most expensive technology and hence reduce its popularity
  • It is actual speed varies from 15-20 Mbps in a range of 50-75 feet
  • It is not compatible with IEEE 802.11b
3. IEEE 802.11g
  • It was introduced in 2003
  • It was improved version with inherent advantages of 802.11a and 802.11b specification
  • It operates at 2.4 GHz radio frequency
  • It has a speed of 54 Mbps and covers a range of 100-150 feet
  • It is compatible with IEEE 802.11b
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