CommScope ION-U L 7/8/85/17/19, Руководство пользователя

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0 Introduction
MF0147A0A Page 15
Introduction
1.4. Purpose
Cellular telephone systems transmit signals in two directions between base
transceiver station (BTS) and mobile stations (MS) within the signal coverage area.
If weak signal transmissions occur within the coverage area because of indoor
applications, topological conditions or distance from the transmitter, extension of the
transmission range can be achieved by means of an optical distribution system.
Such a system contains an optical Master Unit and several Remote Units. The
number of the Remote Units depends on the hardware and software configuration.
The Remote Units are connected to the Master Unit with optical links.
The Master Unit is the connection to the base transceiver stations. The configuration
of a Master Unit depends on the number of the Remote Units and the frequency
range.
RF signals are transported to the remote units via optical fibers.
1.5. The ION-U L 7/8/85/17/19 Remote Unit
The ION-U 7/8/85/17/19 is a low power remote unit for Cell700, LMR800, Cell850,
AWS, and Extended PCS1900 Band Applications. The unit is compatible with analog,
GSM, EDGE, IS-95, CDMA2000, EVDO, W-CDMA, HSDPA, and LTE modulation
standards. It is used in conjunction with a Master Unit in the ION optical distribution
system. This system transports multiple signals simultaneously, providing a cost-
effective solution for distributing capacity from one or more base stations.
The ION-U 7/8/85/17/19 transports signals on the RF layer in a very inexpensive
manner. This means that multiple operators and multiple technologies are moved
simultaneously from a cluster of base stations to a remote location over the same
fiber.
The ION optical distribution system is a cost-effective coverage solution for dense
urban areas, tunnels, subway, airports, convention centers, high-rise buildings, and
other locations where physical structures increase path loss. It has been specifically
designed to reduce zoning problems and to provide homogeneous coverage and
capacity.