User's Manual

The Base Transceiver Station
4Motion System Manual 19
1.3.7 ODU
The outdoor unit (ODU) is a high-power, multi-carrier radio unit that connects to
one or more external antennas. It is designed to provide high system gain and
interference robustness utilizing high transmit power and low noise figure. It is
HW-ready for supporting a bandwidth of up to 20 MHz, enabling future options
such as increased capacity through the use of a multiplexer or wider frequency
channels.
The following ODU port configurations will be available:
 1x1(1Rx by 1 Tx): One receive port, one transmit port
 2x1 (2Rx by 1Tx): Two receive ports, one transmit port
 4x2 (4Rx by 1Tx): Four receive ports, two transmit ports
In the current release only 1x1 and 4x2 ODUs are available.
The wide range of ODU types will enable efficient utilization of various second and
fourth order transmit and receive diversity schemes.
The following table provides details on the currently available ODUs following the
WiMAX Forum’s definitions: