External Interfaces; Figure 3 Zxmbw E9230 Composition - Zte ZXMBW E9230 User Manual

ZXMBW E9230 User Manual
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� Exchanges radio signals with the ATs in its coverage through
the WiMAX air interface and controls radio channels.
� Communicates with BTSs.
� Modulates and demodulates baseband signals.
� Implements system clock synchronization.
� Receives and transmits RF signals.
� Implements power control.
The ZXMBW E9230 is composed of a baseband intermediate fre-
quency board (MTRW), a digital predistortion high power amplifier
(WDPA), an RF front end filter (WRFE) and power module WRPM.
Figure 3 illustrates the ZXMBW E9230 composition.
F 3 ZXMBW E9230 C
IGURE
The ZXMBW E9230 processes the following basic services:
� Forward service
The core network sends IP packets to the ZXMBW E9230
through the transmission network. After receiving these pack-
ets, the MTRX unit of the ZXMBW E9230 disassembles them
and then sends to the baseband process unit for encoding and
modulation. Afterwards, these IP packets are sent to the RF
process unit for up-conversion and power amplification before
being transmitted to ATs.
� Reverse service
The signals from ATs are down converted by the RF process unit
of the ZXMBW E9230 and then sent to the baseband process
unit for channel modulation. Afterwards, these signals are sent
to the CPU control unit for IP packing and then transmitted to
the core network through the transmission network.

External Interfaces

Figure 4 shows the external interfaces of the ZXMBW E9230.
OMPOSITION