Technical data

658 Chapter 24
Glossary
Glossary of Abbreviations and Acronyms Used
Glossary
Glossary of Abbreviations and Acronyms Used
Table 24-1
Access Network
(AN)
The network equipment providing data connectivity
between a packet switched data network (typically the
Internet) and the access terminals. Connectivity is
typically provided at the Link Layer (PPP). Equivalent
terminology to BTS.
Access Terminal
(AT)
A device providing data connectivity to a user. An access
terminal may be connected to a computing device such as
a laptop personal computer or may be self contained data
device such as a personal digital assistant. Equivalent
terminology to MS.
BS or BTS Base Station
CDMA Code Division Multiple Access.
CPICH Common Pilot Channel
DPCH Dedicated Physical Channel/Dedicated Pilot Channel
DSP Digital Signal Processing
DTF Distance to Fault
EVM Error Vector Magnitude.
FDR Frequency Domain Reflectometry
FFT Fast Fourier Transform
FIR Filter
GPS Global Positioning System. Global Positioning System
comprises of multiple satellites all of which orbit the
earth twice a day. Users with a GPS receiver use timing
information from the satellites in order to triangulate
their position on the earth surface.