Glossary

M

MAC

modulation

Media Access Control address. A unique 48-bit number used in Ethernet data packets to identify an Ethernet device, such as an access point or your client adapter.

Any of several techniques for combining user information with a transmitter’s carrier signal.

multipath

The echoes created as a radio signal bounces off of physical objects.

multicast packet A single data message (packet) sent to multiple addresses.

O

omni-directional

This typically refers to a primarily circular antenna radiation pattern.

Orthogonal

A modulation technique used by IEEE 802.11a-compliant wireless LANs for

Frequency Division

transmission at 6, 9, 12, 18, 24, 36, 48, and 54 Mbps.

Multiplex (OFDM)

 

P

packet

A basic message unit for communication across a network. A packet usually

 

includes routing information, data, and sometimes error detection information.

Q

Quadruple Phase

A modulation technique used by IEEE 802.11b-compliant wireless LANs for

Shift Keying

transmission at 2 Mbps.

R

range

A linear measure of the distance that a transmitter can send a signal.

receiver sensitivity A measurement of the weakest signal a receiver can receive and still correctly translate it into data.

RF

Radio frequency. A generic term for radio-based technology.

Cisco Wireless ISR and HWIC Access Point Configuration Guide

 

GL-4

OL-6415-04

 

 

 

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Cisco Systems OL-6415-04 manual Transmission at 6, 9, 12, 18, 24, 36, 48, and 54 Mbps, Transmission at 2 Mbps