User`s guide

Radio Characteristics

Aironet Wireless Bridges use a radio modulation technique

known as Spread Spectrum Transmission. Spread Spec-

trum radios broadcast signals over a range of available

frequencies. The sending station uses a spreading code to

encode the signal. Only the receiving station that uses this

same spreading code can decode or "despread" the signal.

This lets the spread spectrum radio operate on a range of

frequencies with high data bandwidth and excellent

immunity from interference and multipath effects. Two Direct

Sequence (DS) spread spectrum radio models are offered

with the Wireless Bridges that differ in their frequency band

of operation and maximum data rate:

•

Aironet 1000 Series of Wireless Bridges supporting the

902 - 928 MHz band.

•

Aironet 2000 and 2040 Series of Wireless Bridges

supporting the 2400 - 2483.5 MHz (2.4 GHz) band.

Data is transmitted over a half-duplex radio channel

operating at data rates up to 860 Kbps (BR1000) and 2

Mbps (BR2000) or 4 Mbps (BR2040).

Radio Network Terminology

When you are reading this User’s Guide and configuring

your system, you may encounter some of the following

terms. You should become familiar with them.