S412E UG PN: 10580-00318 Rev. P D-1
Appendix D — Glossary of Terms
D-1 Introduction
The following terms are related to this product and its technology.
D-2 Glossary of Terms
3GPP : The 3rd Generation Partnership Project (3GPP) is a collaboration
agreement that was established in December, 1998. It is a co-operation
between ETSI (Europe), ARIB/TTC (Japan), CCSA (China), ATIS
(North America), and TTA (South Korea). The scope of 3GPP was to
make a globally applicable third generation (3G) mobile phone system
specification within the scope of the ITU’s IMT-2000 project. 3GPP
specifications are based on the evolved GSM specifications, now
generally known as the UMTS system.
Adapter : A fitting that supplies a passage between two sets of equipment when
they cannot be directly interconnected.
Adaptive Array
Antenna : Adaptive array antenna is a type of advanced ’smart’ antenna
technology that continually monitors a received signal and dynamically
adapts signal patterns to optimize wireless system performance. The
arrays use signal processing algorithms to adapt to user movement, to
changes in the radio-frequency environment, and to multi-path and
co-channel interference.
ADC : Analog-to-Digital Converter (ADC, A/D or A to D) is an electronic device
that converts continuous signals to discrete digital numbers. The
reverse operation is performed by a digital-to-analog converter (DAC).
ADC can uniquely represent all analog input values within a specified
total input range by a limited number of digital output codes. Refer also
to DAC.
Adjacent Channel : Adjacent Channel is a channel or frequency that is directly above or
below a specific channel or frequency. First-adjacent is immediately
next to another channel, and second-adjacent is two channels away, and
so forth. Information on adjacent channels is used in keeping stations
from interfering with one another.
Adjacent channel
interference : Adjacent channel interference refers to signal impairment to one
frequency due to the presence of another signal on a nearby frequency.
To Next Page
Loading...
