LTE Multi Evaluation Measurement
R&S
®
CMW-KM5xx/-KS5xx
495
User Manual 1173.9628.02 ─ 16
Depending on the measurement, the statistic count is defined in subframes or in slots.
Example:
Assume the following settings (see
chapter 3.3.5, "Measurement Control Settings"
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subframe offset = 3
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number of subframes = 10
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measure subframe = 4
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all statistic counts = 5
Resulting measurement scope:
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"Power Monitor" and "RB allocation table" show 10 subframes, labeled 0 to 9. The
subframe labeled 0 is the fourth subframe (first + offset 3) captured after the trigger
event.
For the "Power Monitor", the 10 subframes are captured 5 times (statistic count) to
complete one statistics cycle.
●
For the "Power Dynamics" measurement, the subframe labeled 4 (measure sub-
frame) is captured 5 times (statistic count) to complete one statistics cycle.
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For all other results, 5 slots (statistic count) have to be measured per statistics
cycle and only slots within the subframe labeled 4 (measure subframe) contribute
to the results.
Each subframe contains 2 slots. To measure 5 slots, the entire subframe range
has to be captured 3 times. The first and second time, both slots of subframe 4 are
measured. The third time, only the first slot of subframe 4 is measured. Now the
statistics cycle is complete and a single-shot measurement stops.
3.2.1.4
Carrier Aggregation
To measure signals with UL carrier aggregation, you must enhance the basic measure-
ment functionality with option R&S CMW-KM502 for FDD or option R&S CMW-KM552
for TDD.
With these options, you can measure the Primary Component Carrier (PCC) and the
Secondary Component Carrier (SCC) of an LTE UL signal with intra-band contiguous
Carrier Aggregation (CA). The carriers can have different channel bandwidths and dif-
ferent RB allocations.
The following results are measured for one carrier at a time. For synchronization, this
carrier must contain allocated RBs. You can either measure the PCC or the SCC.
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EVM, magnitude error, phase error
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I/Q diagram
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Modulation result tables
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Equalizer spectrum flatness
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Power dynamics
The spectrum results are measured for the combination of PCC and SCC, the aggre-
gated bandwidth.
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Spectrum ACLR
General Description
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