LG -LX5400A User Manual page 4

SUBJECT
The LX5400A phone has been designed to operate on the latest digital mobile communication
technology, Code Division Multiple Access (CDMA). This CDMA digital technology has greatly
enhanced voice clarity and can provide a variety of advanced features. Currently, CDMA mobile
communication technology has been commercially used in Analog (AMPS), Cellular(DCN) and
Personal Communication Service (PCS). The difference between them is the operating
frequency spectrum. Cellular uses 800MHz and PCS uses 1.9GHz. The LX5400A can operate
on both frequency, we usually call it Dual-band phone. Also, LX5400A works on Advanced
Mobile Phone Service (AMPS). We call it Tri-mode phone. If one of the DCN, PCS and AMPS
base stations is located nearby, Call fail rate of Tri-mode phone is less than dual-mode phone or
single-mode phone.
The CDMA technology adopts DSSS (Direct Sequence Spread Spectrum). This feature of
DSSS enables the phone to keep communication from being crossed and to use one frequency
channel by multiple users in the same specific area, resulting that it increases the capacity 10
times more compared with that in the analog mode currently used. Soft/Softer Handoff, Hard
Handoff, and Dynamic RF power Control technologies are combined into this phone to reduce
the call being interrupted in a middle of talking over the phone.
Cellular and PCS CDMA network consists of MSO (Mobile Switching Office), BSC (Base Station
Controller), BTS (Base station Transmission System), and MS (Mobile Station). The following
table lists some major CDMA Standards.
CDMA Standard
Basic air interface
Network
Service
Performance
Introduction
Designator
TIA/EIA/IS-95-A
ANSI J-STD-008
TIA/EIA/IS-634
TIA/EIA/IS/651
TIA/EIA/IS-41-C
TIA/EIA/IS-124
TIA/EIA/IS-96-B
TIA/EIA/IS-99
TIA/EIA/IS-637
TIA/EIA/IS-657
TIA/EIA/IS-97
TIA/EIA/IS-98
ANSI J-STD-018
ANSI J-STD-019
TIA/EIA/IS-125
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Description
Protocol between MS and BTS for Cellular & AMPS
Protocol between MS and BTS for PCS
MAS-BS
PCSC-RS
Intersystem operations
Nom-signaling data comm.
Speech CODEC
Assign data and fax
Short message service
Packet data
Cellular base station
Cellular mobile station
PCS personal station
PCS base station
Speech CODEC