
Chapter 15 379
W-CDMA Uplink Digital Modulation for Receiver Test
Multiple PRACH Overview
decrease. This is demonstrated in Figure 15-23 where the AWGN feature is on with a C/N
value of 0.0 dB.
Figure 15-23 Offset Power with Noise Added
This offset will not create any problems with the multiple PRACH transmission. The typical
test that utilizes a multiple PRACH feature is used to discern a single PRACH transmission
from among a group of PRACH signals. The PRACH power values shown on the ESG display
are valid and will be reflected in your measurements, even when all UEs are on. They are also
used to calculate the various other parameters like the control part and data part power
levels.
PRACH Power—22.77 dB Offset from Carrier Power
ESG Carrier Power
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