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M
MAC
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.
modulation
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
Frequency Division
Multiplex (OFDM)
A modulation technique used by IEEE 802.11a-compliant wireless LANs for
transmission at 6, 9, 12, 18, 24, 36, 48, and 54 Mbps.
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
Shift Keying
A modulation technique used by IEEE 802.11b-compliant wireless LANs for
transmission at 2 Mbps.
Glossary
GL-4
Cisco Wireless ISR and HWIC Access Point Configuration Guide
OL-6415-04
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.