Technical Details
Technical Details
9

Technical Details

The LG 550 is an all digital phone that operates on
both Code Division Multiple Access (CDMA)
frequencies: cellular services at 800 Mhz and
Personal Communication Services (PCS) at 1.9 Ghz.
CDMA technology uses a feature called DSSS (Direct
Sequence Spread Spectrum) that enables the phone
to keep communication from being crossed and to use
one frequency channel by multiple users in the same
specific area. This results in a 10-fold capacity
increase when compared with analog mode. In
addition, features such as soft / softer handoff, hard
handoff, and dynamic RF power control technologies
combine to reduce call interruptions.
The Cellular and PCS CDMA networks consist of MSO
(Mobile Switching Office), BSC (Base Station
Controller), BTS (Base station Transmission System),
and MS (Mobile Station).
* TSB -74: Protocol between an IS-95A system and
ANSI J-STD-008
1xRTT system receives twice as many subscribers in
the wireless section as IS-95. Its battery life is twice
as long as IS-95. High-speed data transmission is also
possible.
The following table lists some major CDMA standards.

CDMA Standard

Basic Air

Interface

TIA/EIA-95A
TSB-74
ANSI J-STD-008
TIA/EIA-IS2000
CDMA Dual-Mode Air Interface
14.4kbps radio link protocol and
inter-band operations
IS-95 adapted for PCS frequency band
CDMA2000 1xRTT Air Interface
MAS-BS
PCSC-RS
Intersystem operations
Non-signaling data comm.
CDMA2000 High Rate Packet Data
Air Interface
1xEVDO Inter-Operability
Specification for CDMA2000 Access
Network Interfaces
Recommended Minimum Performance
Standards for CDMA2000 High Rate
Packet Data Access Terminal
Test Application Specification(TAS) for
High Rate Packet Data Air Interface
TIA/EIA/IS-634
TIA/EIA/IS/651
TIA/EIA/IS-41-C
TIA/EIA/IS-124
TIA/EIA/IS-856
TIA/EIA/IS-878
TIA/EIA/IS-866
TIA/EIA/IS-890
TIA/EIA/IS-96-B
TIA/EIA/IS-99
TIA/EIA/IS-637
TIA/EIA/IS-657
IS-801
TIA/EIA/IS-707-A
Speech CODEC
Async Data and Fax
Short message service
Packet Data
Position Determination Service
High Speed Packet Data

Network

Service

1x EVDO

Related

interface

Designator Description