Andrew Wireless Innovations Group RPT-NODEC1943 用户手册

5 Functional Description 

 

ID No: 161692 

PRELIMINARY 

Page 79

 

 
The task of the digital channel module (DCM) is to filter and amplify any signals 
passing through it. In addition it takes measurements of the input and output signals 
and decodes the air interface to ensure proper setup and operation.  
 
Finally it performs the interference cancellation algorithms, which eliminate the 
normal problems associated with isolation, and has an integrated controller (in the DL 
part) for the entire Node C, which maintains a web server for local and remote 
communication. This process is accomplished by both analogue and digital means.  
 
In case the diversity option is equipped, the module receives signals from both the 
primary duplexer and diversity filter. Both signals are combined digitally and filtered 
before being amplified in the uplink amplifier. 
 
The DCM consists of an UL and DL part.