User’s Manual for Node G
Network Elements
Page 38
M0121A2A.doc
4.3.4. Digital Channel Module (DCM)
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 for the
entire Node G, which maintains a web server for local and remote communication.
This process is accomplished by both analogue and digital means.
The DCM is able to amplify two channels for uplink and downlink. The UL power
amplifier is integrated in the DCM.
figure 4-9 Digital channel module
In the DCM frequency hopping is integrated (see features of Node G).
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