 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| n |
Commercial
product, developed by Lucent Technologies
|
|
|
|
(de-facto
market leader), available since early 1990s
|
|
| n |
Development
closely aligned with early IEEE 802.11
|
|
|
|
standard
effort, first product generation differs in key
|
|
|
|
aspects
from final IEEE 802.11 standard
|
|
|
| n |
Will
discuss WaveLAN version 1, newer version 2 follows
|
|
|
finally
approved 802.11 standard (plus enhancements to
|
|
|
|
allow
for data rates up to 10 Mbps)
|
|
|
| n |
Physical
layer:
|
|
|
|
– |
915
MHz (902-928 MHz) or 2.4 GHz (2.412-2.475 GHz) ISM
|
|
|
band
|
|
|
– |
Bands
are divided into frequency channels of 26 MHz each
|
|
|
– |
Modulation
scheme: DSSS, raw data rate of 2 Mbps
|
|
