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Measurements Modulation Measurements
MS278XB OM 5-63
WCDMA Uplink Code Domain Power
The Code Domain Power (CDP) measurement for Uplink measures the CDP for each code channel for
each Orthogonal Variable Spreading Factor (OVSF) code. There are four graph type options for this
measurement:
• Code Domain Power
• Code Domain Power with Zoom
• Code Domain Error
• Code Domain Error with Zoom
The measurement graph type can be selected from the WCDMA Graph Type dialog as shown in
Figure 5-40.
In WCDMA Uplink, there are the DPCCH and DPDCH channels. In a HSUPA signal, there are DPCCH,
DPDCH, HS-DPCCH, E-DPCCH, and E-DPDCH channels. In the CDP display, different types of
channels are identified with different colors. Figure 5-41 shows a Code Domain Power graph. The
measuring signal is HSUPATest2SF2 and it consists of two SF2 E-DPDCH channels as follows:
• 1 DPCCH channel C(256, 0)-Q
• 1 DPDCH channel C(64, 16)-I
• 1 HS-DPCCH channel C(256, 64)-Q
• 1 E-DPCCH channel C(256, 1)-I
• 2 E-DPDCH channels C(2, 1)-I, and C(2, 1)-Q
Figure 5-40. Code Domain Power Setup Screen