Chapter 3 Radio Frequency Subsystem; Overview; Radio Frequency Subsystem Functional Structure - Huawei Airbridge BTS3612A-1900 Technical Manual

Technical Manual
Airbridge BTS3612A CDMA Base Station

Chapter 3 Radio Frequency Subsystem

3.1 Overview

3.1.1 Radio Frequency Subsystem Functional Structure

The structure of RF (radio frequency) subsystem is shown in Figure 3-1.
BRDM
BRDM
BRDM: BTS Resource Distribution Module
BHPA: BTS High Power Amplifier Unit
RLDU: Receive LNA Distribution Unit
Figure 3-1 Structure of RF subsystem
Note:
The above figure illustrates the duplexer configuration for 800MHz band. For 800MHz band, the duplexer
can also be DDU. For 450MHz band, the duplexer can be DFU, DDU or CDU. For 1900MHz band, the
duplexer can be DDU or CDU.
The RF subsystem is connected with the BCIM of the baseband subsystem via the
optical interface provided by the BTRM, and connected with the antenna & feeder
subsystem via the feeder interface provided by a CDU, DDU, or DFU. It implements the
following functions:
BHPA
BTRM
BHPA
BTRM
3-1
Chapter 3 Radio Frequency Subsystem
Antenna & feeder
CDU
RLDU
BTRM: BTS Transceiver Module
CDU: Combining Duplexer Unit
System Principle