LTE Multi Evaluation Measurement
R&S
®
CMW-KM5xx/-KS5xx
534
User Manual 1173.9628.02 ─ 16
3.2.6.11
Detailed Views: TX Measurement and BLER
This view contains tables of statistical results for the TX and RX measurements.
Fig. 3-36: LTE Multi Evaluation: TX Measurement
TX Measurement
The table provides an overview of statistical values obtained in the measured slot.
Except for the OBW result, only a single carrier is analyzed. For signals with carrier
aggregation, you can select which carrier is measured (setting "Measurement Carrier").
Other detailed views provide a subset of these values:
●
Detected Allocation: "NoRB" indicates the number of allocated resource blocks,
"OffsetRB" the offset of the first allocated resource block from the edge of the allo-
cated UL transmission bandwidth.
●
EVM, Magnitude Error, Phase Error: The R&S
CMW calculates and displays two
values (l/h) for low and high EVM window position; see
For the SC-FDMA data symbols (all symbols except reference symbol) RMS and
peak values are provided. The DMRS value refers to the reference symbol
(Demodulation Reference Signal).
●
I/Q Origin Offset: The I/Q offset is estimated from the distribution of the constella-
tion points.
●
Gain Imbalance: absolute value of [1 + I/Q Imbalance]
Quadrature Error: angular component of [1 + I/Q Imbalance]
These results are only available, if the view "EVM vs. subcarrier" is enabled and
the measured carrier has a full resource block allocation (for example 50 RB at 10
MHz bandwidth). Otherwise these results are not calculated, in order to speed up
the measurement.
General Description
深圳德标仪器
135-1095-0799