Description of 802.11b standard that works on 2.4 GHz

802.11b works on the frequency of 2.4 GHz with maximum bandwidth of 11 Mbps. Use of 2.4 GHz band which is unregulated frequency – providers does not have to pay the license for it.

Interference could occur, because other vendors use same frequencies, also. Microwave ovens, cordless phones and bluetooth devices work on the same band.

11b uses DSSS (Direct-sequence spread spectrum) and CCK (Complementary Code Keying) on the frequency 2.4 to 2.483 GHZ.

DSSS is the modulation technique in which transmitted signal takes up more bandwidth than the information signal that is being modulated. The name spread spectrum comes from fact that the carrier signal occur over the full spectrum of the transmitting frequency.

Its range in the indoor environment is about 35 meters (117 feet), and 100 meters (333 feet) in outdoor environment.