User's Manual

Chapter 1 - System Description The Base Transceiver Station
4Motion 21 System Manual
1.3.3 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 (one Tx/Rx interface)
 2x2 (2Rx by 2Tx): Two receive ports, two transmit ports (two Tx/Rx interfaces)
 4x2 (4Rx by 2Tx): Four receive ports, two transmit ports (two Tx/Rx interfaces,
two Rx only interfaces)
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:
Table 1-3: ODU Types
Band (GHz) ODU Frequency Range
(MHz)
ODU Port
Configuration
ODU Bandwidth
(MHz)
ODU Max Tx
Power (dBm)
2.0 2020-2220 1Rx by 1Tx Up to 10 36
2.3 2300-2360 1Rx by 1Tx Up to 10 36
2340-2400 1Rx by 1Tx Up to 10 36
2305 - 2317, 2348 - 2360
(includes WCS filter)
1Rx by 1Tx Up to 10 36
2300-2400 2Rx by 2Tx Up to 30 38