632 Chapter 17
W-CDMA Downlink Digital Modulation for Receiver Test
W-CDMA Downlink Concepts
W-CDMA Downlink Concepts
DPCH Coding Block Diagram
Reference Measurement Channels
Real-time W-CDMA provides fully coded reference measurement channels (RMC) at 12.2, 64, 144, and
384 kbps, the AMR at 12.2 kbps, and the UDI ISDN at 64 kbps. Along with user defined parameters, all four
RMCs, the AMR 12.2, and the UDI ISDN are supported for use with the compressed mode feature.
The signal generator provides one-button setup capabilities for transport channel configuration. The
dedicated physical channel DCH (downlink) is automatically setup by pressing the
Ref Measure Setup softkey
(or sending the appropriate SCPI commands) and then selecting the desired data type. To activate the
Config
Transport
softkey, one of the reference measurement rates must be selected or the DPCH Data field value
must be set to Transport CH.
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