Copyright 2002 by
Prentice Hall, Inc.
6-12
nAdvantage: used in
hazardous environments, where
no wiring ducts available, disaster recovery,
and temporary installations.
1. Infrared light LANs -
transmit at frequencies in the
lowest frequency in the light spectrum.
Transmitters and
receivers in sight with each other. Wide BW.
Can be licensed anywhere.
2. Narrowband radio
frequency (RF) - transmit on
a center frequency. RF transmitters
must be licensed, government
regulates radio signals.
Wireless is the Next Frontier: LANs