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Chapter 15 409
W-CDMA Uplink Digital Modulation for Receiver Test
DPCH
Figure 15-40 DPCH Code Setup Display
Modifying the Transport Layer
Up to six transport data channels are available to the DPDCH when the DPDCH data type is
set to TrCh (factory default data type). This task teaches you how to make changes to the
transport layer parameters while maintaining an acceptable data puncture rate.
1. Press Return > Return > Transport Setup.
2. Press
3 > Enter to highlight/select channel 3.
3. Press
TrCH State Off On to On.
4. Press
TrCH Setup.
Refer to Figure 15-41. Notice the greyed out fields Max Puncture and Puncture. The Max
Puncture field shows the maximum amount of puncturing allowed for this transport
channel and the Puncture field shows the current puncture rate. A positive puncture
value indicates the data is being punctured while a negative value means that bits are
added. The current puncture value exceeds the allowable puncture rate of 60%. The
excessive puncturing will be reduced when the rate matching attribute is adjusted in one
of the following steps.
BER Setup Fields
BER
Symbol Rate Field
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