LTE Multi Evaluation Measurement
R&S
®
CMW-KM5xx/-KS5xx
527
User Manual 1173.9628.02 ─ 16
The displayed absolute limit lines are calculated from the configured relative ACLR lim-
its. They are only displayed for adjacent channels with a power level above the config-
ured absolute limit.
The Adjacent Channel Leakage power Ratios (ACLR) resulting from the measured
powers are displayed in the table below the diagram. According to 3GPP TS 36.521,
the ACLR is defined as the mean power in the assigned E-UTRA channel divided by
the mean power in an adjacent channel. Additionally the mean power in the assigned
E-UTRA channel is displayed.
The filters used for the ACLR measurement are compliant with 3GPP TS 36.521.
According to this specification, ACLR tests must be carried out at maximum output
power of the UE.
For the parameters at the bottom, see
chapter 3.2.6.14, "Common View Elements"
For query of the ACLR results via remote control, see
3.2.6.7
Detailed Views: I/Q Constellation Diagram
The constellation diagram shows the modulation symbols in the measured slot of the
measured component carrier as points in the I/Q plane.
Fig. 3-30: LTE Multi Evaluation: I/Q Constellation diagram
The constellation diagrams depend on the modulation type. For an ideal signal, the
QPSK constellation diagram consists of four points, located on a circle around the ori-
General Description
深圳德标仪器
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