802.11b Standard
802.11b is a widely adopted standard that operates in the 2.4 GHz range and
uses Direct Sequence Spread Spectrum (DSSS). It has four data rates: 1, 2,
5.5, and 11 Mbps. 802.11b provides from 11–14 channels, depending on
country standards, but only three channels have nonoverlapping frequencies:
1, 6, and 11. Cisco recommends a maximum of 25 users per cell; expect an
actual peak throughput of about 6.8 Mbps.
Note
Japan provides a 14 channel, which does not overlap with channel 11 and gives a fourth
available nonoverlapping channel.