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Term
LOS
MAC
MHz
Modem
Modulation
Multipath
NVRAM
NLOS
OFDM
OLOS
Packet
PHY
PIR
PMP
PTP
QAM
QPSK
Receiver
Sensitivity
RF
RSSI
Rx
S/N
SINADR
TCP/IP
TFTP
Tx
UBR
70-00072-01-06a
Table 52: Spec. - Glossary
Line Of Sight. A clear direct path between two antennas, with no obstructions
within the first Fresnel zone.
Media Access Control. A unique number assigned to a network device.
Corresponds to ISO Network Model Layer 2 data link layer.
Megahertz. 1,000,000 Hz
MOdulator/DEModulator. A hardware device that converts digital data into
analog and vice versa.
Any of several techniques for combining user information with a transmitter
carrier signal.
The radio echoes created as a radio signal bounces off objects.
Non-volatile RAM. System parameters are stored in NVRAM. This data is not
affected by powering off the system.
Non Line Of Sight. Completely obstructed path between two antennas.
Orthogonal Frequency Division Multiplexing. OFDM spreads data to be
transmitted over a large number of orthogonal carriers.
Optical Line Of Sight. A clear direct path between two antennas, with
obstructions within the first Fresnel zone.
A bundle of data organized in a specific way for transmission. The three
principal elements of a packet include the header, the text, and the trailer (error
detection and correction bits).
Physical Layer. Provides for the transmission of data through a communications
channel by defining the electrical, mechanical, and procedural specifications.
Peak Information Rate
Point to Multipoint
Point to Point
Quadrature Amplitude Modulation
Quadrature Phase Shift Keying
A measurement of the weakest signal a receiver can receive and still correctly
translate it into data.
Radio Frequency
Received Signal Strength Indication
Receiver
Signal to Noise Ratio
Signal to noise and distortion ratio.
Transmission Control Protocol/Internet Protocol
The standard set of protocols used by the Internet for transferring information
between computers, handsets, and other devices.
Trivial File Transfer Protocol
Transmitter
Uncoded Burst Rate
Proprietary Redline Communications © 2008
AN-80i
Definition
Page 95 of 96
User
Manual
June 1, 2008
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