User's Manual Part 2

6-13
Frequently Asked Questions
The following list provides answers to some frequently asked questions about
LG
Cell
:
1
What is the LGC
ell
Distributed Antenna System?
The LG
Cell
Distributed Antenna System (DAS) contains multiple low-power
radiating elements that are deployed around indoor facilities to improve
coverage and capacity. The unique, patented architecture of the LG
Cell
DAS
provides an inexpensive solution to the cellular and PCS provider for coverage/
capacity upgrades and private microcell applications.
2
What is twisted pair cable? Will it pick up spurious emissions?
Twisted pair (TP) cable is the standard cable that you find at the back of your
computer for the network hookup. TP cable is the most ubiquitious cable in any
office building. Furthermore, TP cable is inexpensive and easy to install. The
twisting nature of the cable creates a transmission line for efficient signal
transfer and rejection of spurious emissions The LG
Cell
uses a state-of-the-art
common-mode rejection device that reduces pickup of spurious emissions on a
TP cable by a factor of 10,000.
3
Can a single LG
Cell
simultaneously support multiple access standards (such
as 800 AMPS/TDMA?
Yes. The LGC
ell
is a frequency selective product. The LGC
ell
system is
transparent to the protocol that the base station and mobile unit use. You can
view the entire system with all the cables together as a frequency selective
repeater with a specified gain.
4
What is the bandwidth of the LG
Cell
?
LG
Cell
selects from the RF bandwith, which can help prevent amplification of
an unwanted signal, such as a competitor’s signal. Refer to the data
specifications for the RF bandwith of the system. Another interpretation of
bandwidth is the amount of data that the LG
Cell
system can transmit. The
microcellular or macrocellular base station to which the LG
Cell
is connected
limits the bandwith or capacity of the LG
Cell
, which is a transparent system.
Total, composite output power and spurious emissions are the only constraints
that limit the amount of channels that an RAU can radiate. Furthermore, the
LG
Cell
system shall not limit the data rate of the modulation transmitted
through the system.
5
Can the LG
Cell
support multiband operation?
The LG
Cell
provides a wide variety of single-band products, including the U.S.
800 MHz, European GSM 900, DCS 1800, Korean PCS 1800, U.S. PCS 1900
systems, and iDEN. You can use these systems together to provide multiband
services. In addition, LG
Cell
has a Dual Band 900/1800 system available.