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LTE PRACH Measurement
R&S
®
CMW-KM5xx/-KS5xx
751
User Manual 1173.9628.02 ─ 16
Fig. 4-9: LTE PRACH: Error Vector Magnitude
The diagram shows the EVM in all preamble subcarriers. For preamble format 0 to 3
there are 839 subcarriers with a spacing of 1.25 kHz. For preamble format 4 there are
139 subcarriers with a spacing of 7.5 kHz. The values are RMS averaged over the
samples in each subcarrier.
For description of the table rows see
chapter 4.2.9.6, "Detailed Views: TX Measure-
For table columns and other elements refer to
chapter 4.2.9.9, "Common View Ele-
4.2.9.3
Detailed Views: EVM vs Preamble, Power vs Preamble
This section applies to the following detailed views:
●
Error Vector Magnitude vs Preamble
●
Power vs Preamble
Each of these "multi preamble" views shows a diagram and a statistical overview of
results.
General Description
深圳德标仪器
135-1095-0799