Overview AR Standard Repeater
044-05250 Rev B 1-3
Powerwave AR repeaters work as bi-directional on-frequency amplifiers used to fill out
uncovered areas in wireless mobile systems such as base station fringe areas, tunnels,
business, convention centers, airports and industrial buildings.
A repeater receives, amplifies and transmits signals to/from a base station to/from mobile
stations with both directions being served simultaneously. To be able to receive and transmit
signals in both directions, a repeater is connected to a donor antenna directed towards the
base station and to a service antenna directed towards the area to be covered. These
antennas are connected to the repeater with N type or 7/16" male connectors. The repeaters
can also be connected via RF cables or fiber optic cables instead of donor or service antennas.
Powerwave repeaters are microprocessor controlled with alarm and operational status LEDs
visible on the front cover. Cooling is provided through convection heat dissipation. To prevent
instability due to poor antenna isolation, a built-in antenna isolation supervision feature
reduces the gain level automatically when poor antenna isolation is detected.
Operational parameters, such as gain, channel number and power levels are set using a PC
running Powerwave OM-Online software which can communicate with the repeaters either
locally or remotely via modem. Remote operation can be performed via PSTN or a GSM net.
The Operation and Maintenance System (OMS) provides for Network Operations Center
(NOC) configuration and alarm montioring.
AR repeaters can be configured in many combinations, depending on the wireless system,
single or double system operation, RF or optical transmission, and output power. The most
common types of the AR repeaters are described in the following sections. Since all of the
repeater models can be configured differently, the descriptions are applicable only to a small
portion of the most commonly configured repeaters.
In this document, the channel selective 900, 1800, and 1900 systems are called GSM, DCS
and PCS respectively even though these systems may have different names in other parts of
the world.
Repeaters with RF / RF Transmission
All units depicted on this and the following pages are assumed to have the donor connection
to the left and the service connection to the right.
Channel Selective (CSel) Repeater
A channel selective GSM repeater is used for channel selective systems such as GSM, DCS,
and PCS. It can be equipped with up to four channels in a standard chassis and up to eight in
a high cover chassis. This repeater type has the ability to work with GSM (GMSK) and EDGE
(8PSK) in GSM and PCS systems. AR17xx, AR27xx, and AR37xx are EDGE compatible.
A channel selective CDMA or WCDMA repeater is used for digital code division systems in
accordance with IS-95 (CDMA 2000 – 3GPP2) for CDMA and 3GPP / UMTS for WCDMA or
J-STD-008 standard, and wideband digital code division systems. It can be equipped with two
channels in the cabinet and additional two channels in a high cover. It can be connected with
either a donor antenna or RF cable and a service antenna or RF cable.
Channel selective High Power CDMA/WCDMA repeaters are the same as the CDMA/WCDMA
repeaters but are equipped with a 6dB (typically) Booster Amplifier (BA) in the downlink path.
The BA is located in the high cover with its own PSU and reduces the number of channels to
two in the cabinet.
Band Selective (BSel) Repeater
The band selective repeater has an adjustable bandwidth and is used for analog or digital
systems such as GSM, TACS, ETACS, AMPS, DAMPS, CDMA and WCDMA. This repeater
type can be equipped with one band in the cabinet and additional one band in a high cover. It
can be connected with either a donor antenna or RF cable and a service antenna or RF cable.
Repeaters with RF / Fiber Optic Transmission
Base Station Master Unit (BMU)
A BMU is equipped with a Fiber Optic Node (FON) for optical transmission on the service side.
It has an RF port for BTS connection and can provide up to four fiber optic ports that can be
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