Specifications

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Appendix B – Terms and definitions
ASIC – Application Specific Integrated Circuit
AWGN – Additive White Gaussian Noise
BBG – Base Band Generator
BER – Bit Error Rate
BLER – Block Error Rate
BTS – Base Transceiver Station
CDMA – Code Division Multiple Access multiplexing scheme
cdmaOneTM – Brand name that describes a complete wireless system
incorporating the IS-95 CDMA air interface.
cdma2000 – The name identifying the TIA standard for third generation
technology that is an evolutionary outgrowth of cdmaOne with a seamless
migration path to 3G features and services. See also IS-2000.
CRC – Cyclic Redundancy Check
DAYLT – DAYLighT savings time, Sync channel message
dB – deciBel; a ratio in Log base 10
dBm – deciBel milliwatts, a measure of power expressed in terms of its ratio
(in dB) to one milliwatt
DSP – Digital Signal Processor
Delayed Even Second – Delay for the even second clock pulse.
Even Second Clock – A clock pulse sent out every two seconds to synchronize the
clock rate of the basestation to external equipment.
FER – Frame Error Rate
Forward Path – Refers to the base-to-mobile link
F-FCH – Forward Fundamental traffic CHannel; primary traffic channel for voice
and low-speed data.
F-PCH – Forward Paging CHannel which is the digital control channel for the
forward link. The first paging channel is always assigned to Walsh code 1.
When additional paging channels are required, Walsh codes 2 – 7 are used.
F-PICH – Forward Pilot CHannel used by all mobiles as a coherent phase
reference and as a means to identify cells from each other. The Pilot channel uses
Walsh code 0.
F-SYNCH – Forward Sync CHannel; transmits time of day information for clock
alignment. The Synch channel always uses Walsh code 32.
F-SCH – Forward Supplemental traffic CHannel provides additional bandwidth for
high-speed data.
IS-95 – Interim Standard 1995 for US Code Division Multiple Access.
IS-95A – TIA standard document that defines the common air interface for IS-95.
IS-2000 – 3rd Generation version of IS-95 standard which incorporates backwards
compatibility with IS-95.
LPSEC – LeaP SEConds, Sync channel message.
LTM_Off – Local TiMe Offset, Sync channel message which provides the offset of
the local time from the system time.
Msg_Type – Message Type, Sync channel message.
MC – Multi-Carrier
MINPREV – Mimimum Protocol REVision level, Sync channel message.
NID – Network IDentification, Sync channel message.
OCNS – Orthogonal Channel Noise Simulator
OTD – Orthogonal Transmit Diversity
PN Offset – Pseudo-random Number Offset which are time offsets in the short
sequence code assigned to each basestation to uniquely identify them.
PRAT – Paging channel data RATe, Sync channel message which provides the data
rate used by the paging channels in the system.
PREV – Protocol REVision level, Sync channel message
QOF – Quasi-Orthogonal Function
RC – Radio Configuration
RF – Radio Frequency
RSSI – Receive Signal Strength Indication
SID – System IDentification, Sync channel message.
Sys_Time – System Time, Sync channel message.
SR – Spreading Rate
TIA – Telecommunications Industry Association
Walsh Code – Orthogonal codes which are assigned uniquely to each user in a cell.