User's Manual

The Extension Unit (EU) supports the TDD mechanism for a SISO * channel with
multiple carriers up to an instantaneous bandwidth of 30 MHz. The TDD switching
information is retrieved for the WiMAX signal by analyzing the associated DL Map in
the master unit.
For the RU and the attached EU the alarm and control information is exchanged with
Master Unit on a sub carrier. At the Master Unit the alarms can be presented to the
BTS via alarm contact relays or can be sent to the Andrew OMC.
 Efficient, high power amplifier
 No additional fiber needed. WiMAX and 2G, 3G signals are transported on the
same optical link.
 Compliant to 802.16e-2005, 802.16e, and the WiMAX approved Corrigenda,
two modifications
 SNMP alarming and web-GUI
* SISO is the abbrev. of Single Input Single Output