LTE PRACH Measurement
R&S
®
CMW-KM5xx/-KS5xx
766
User Manual 1173.9628.02 ─ 16
Fig. 4-16: Modulation settings
Statistic Count
Defines the number of measurement intervals per measurement cycle (statistics cycle,
single-shot measurement). This value is also relevant for continuous measurements,
because the averaging procedures depend on the statistic count.
For "single preamble" modulation measurements the measurement interval is comple-
ted when the R&S
CMW has measured one full preamble (cyclic preamble
sequence). The preamble length depends on the preamble format, see
"Preambles in the Time Domain"
For "multi preamble" measurements the measurement interval is completed when the
configured number of preambles has been measured, see
The measurement provides independent statistic counts for modulation results and
power dynamics results. In single-shot mode and with a shorter modulation statistic
count, the modulation evaluation is stopped while the R&S
CMW still continues provid-
ing new power dynamics results.
Remote command:
High Speed Flag
Determines whether the restricted or the unrestricted set of N
CS
values is used for pre-
amble generation. This software version supports only the unrestricted set (high speed
flag disabled).
For background information see
chapter 4.2.7.3, "Preamble Sequences"
Remote command:
n/a
Logical Root Sequence Index
Specifies the logical root sequence index to be used for generation of the preamble
sequence. Set this parameter to the value used by the UE.
In the Standalone (SA) scenario, this parameter is controlled by the measurement. In
the Combined Signal Path (CSP) scenario, it is controlled by the signaling application.
GUI Reference
深圳德标仪器
