LTE Signaling
R&S
®
CMW-KM5xx/-KS5xx
62
User Manual 1173.9628.02 ─ 16
Fig. 2-22: Power measurement with ramping up pattern A for FDD
Explanation of the diagram:
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Frame 1: constant initial target power
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Frame 2: ramping up
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Frame 3: constant power for input path configuration
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End of frame 3: change of RB allocation
In this example the channel bandwidth is 1.4 MHz. Thus the allocation changes
from 1 RB to 6 RB (8.78 dB power step expected).
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Frame 4: ramping up
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Frame 5: constant power for input path configuration
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Frame 6 and 7: ramping up
To perform a relative power control test
You need the LTE signaling application and the LTE measurement application (option
R&S CMW-KM500/550, LTE FDD/TDD R8, TX measurement).
1. Set up an RMC connection with the desired duplex mode and cell bandwidth.
Note that the expected nominal power is configured automatically during the test.
You do not need to set a specific value.
2. Switch to the "LTE Multi Evaluation" measurement:
In the signaling application press the "LTE TX Meas" softkey.
The measurement application is opened and the combined signal path scenario is
selected.
3. In the measurement, select the TPC trigger signal provided by the signaling appli-
cation:
Press the softkey "Trigger" followed by the hotkey "Trigger Source" and select
"LTE Sig<n>: TPC Trigger".
4. Ensure that the number of measured subframes is sufficient (e.g. 80):
General Description
深圳德标仪器
135-1095-0799
