Operations Manual

Product Glossary - R0.1 glossary-13
CONFIDENTIAL & PROPRIETARY
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path loss allowance
The net amount of amplification given to the signal in an IFU link, including
margins for adequate received SNR and channel fading. In other words, path
loss allowance is equal to the system gain plus the antenna gains.
payload
User traffic transported over a network
Point Of Presence (POP)
Umbrella name referring to the location of the physical access point where
user traffic is aggregated.
polarization
Directional orientation of a radio wave electric field. Some radio
communication systems can exploit polarization differences to reduce
interference from nearby links.
POP
See Point Of Presence (POP).
power source
A separate unit or part of a circuit that supplies power to the rest of the circuit
or to a system.
propagation loss
Signal attenuation that occurs during transmission.
provisioning
Act of configuring the gateway routers and the site equipment to enable a
customer to receive service.
Q
QAM
Quadrature Amplitude Modulation. Transmitted signal defined by amplitude
and phase.
R
Radio Frequency (RF)
An electromagnetic wave frequency from approximately 3 KHz to
approximately 300 GHz. Includes the frequencies used for radio and
television transmission.
radio overhead
IFU communication channel in addition to the payload.