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VoxTechnologies
Enterprise Network Series
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Alcatel 7390
LMDS Co-Polarized Radio Termination
The Alcatel 7390 LMDS Co-Polarized Radio Termination (Co-Pol RT) is the radio
part of the customer premises equipment also called the Alcatel LMDS terminal
station. The 7390 Co-Pol RT is responsible for transmitting upstream carriers
towards the base station and receiving downstream carriers from it. The 7390 Co-Pol
RTs have been designed to operate for split-band licensing in the 24 to 30 GHz
frequency bands with Tx/Rx duplex separations adapted to a wide range of
geographic standards. For example, 500 MHz (Latin and North America), 723 and
1008 MHz (Europe), and 855 MHz (Asia). The 7390 Co-Pol RT covers sub-bands of
280 MHz to provide radio agility. In order to keep cost structure down, the RTs
are designed from widely used, field-proven systems such as digital satellite
systems. The 7390 Co-Pol RT is DAVIC (Satellite DVB standard)-compliant.
Highly scalable and fully managed as part of a multiservice solution, Alcatel
7390 LMDS products can be rapidly deployed to provide a powerful, cost-effective
access solution for the first mile delivery of a wide range of data, Internet,
voice and video services.
Outstanding compactness
The 7390 Co-Pol RT is compact, to keep mounting infrastructure costs as low
as possible. Using state of the art Monolithic Microwave Integrated Circuits (MMICs)
technology, the Co-Pol RT is actually the smallest radio of its kind in the
industry with a 15 x 15 x 2.5 cm ( 5.8 x 5.8 x .97 in.) radio bloc - one bloc
corresponds to one transceiver (Tx + Rx), coupled with an integrated 26 cm (10
in.) parabolic antenna. It weighs less than 2 kilograms (4.4 pounds).
High reliability
The Alcatel 7390 LMDS Co-Pol RT benefits from automated manufacturing
processes, highly qualified components and severe test procedures, providing the
highest level of quality and thus limiting maintenance while minimizing the sets
of spare parts. In addition to its compactness, the 7390 Co-Pol RT has been
designed to operate in very harsh environments (from -33° to 55°C/13° to 63°
F) with very low power consumption (less than 12 W).
Flexibility and adaptability
The 7390 Co-Pol RT benefits from a 30 dB output power adjustment to cover
TS-BS distance of up to 5 km (3 m.). A higher gain antenna (60 cm/24 in.
diameter) with horizontal or vertical polarization is also available.
Easy installation
The 7390 Co-Pol RT includes a directional transmit/receive antenna and a
radio frequency (RF) transceiver unit. The small dish antenna provides system
gain and directivity. The RF unit is bi-directional, enabling it to access the
Alcatel 7390 LMDS Radio Base Station (RBS). A specific pole/wall mounting allows
± 90° accurate antenna alignment for both azimuth and elevation.
An alignment tool permits fast and easy installation (typically less than one
hour) requiring no special skills. A single coaxial cable (up to 200 m/656 ft.
between the RT and Alcatel 7390 LMDS Network Termination (NT)) interconnects the
Co-Pol RT to the indoor unit, transporting all signals: downstream IF
(transmitted to the NT), upstream IF (received from the NT) and DC power supply
(no need for any external PSU). For cable length compensation, 20dB extra gain
in reception and 10dB in transmission are added.
Multi-NT configuration
One single Alcatel 7390 Co-Pol RT can connect up to eight NTs thus enabling
cost sharing between end-users which means only one outdoor installation per
building.
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