Cisco Aironet 340 Series, Hardware Installation Manual

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Glossary
4
Cisco Aironet Wireless LAN Adapters Hardware Installation Guide
OL-0795-01
IP Subnet Mask
The number used to identify the IP subnetwork, indicating whether the IP
address can be recognized on the LAN or if it must be reached through a
gateway.
Isotropic
An antenna that radiates its signal 360 degrees both vertically and horizontally
in a perfect sphere.
M
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.
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 802.11-compliant wireless LANs for
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.