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LTE PRACH Measurement
R&S
®
CMW-KM5xx/-KS5xx
767
User Manual 1173.9628.02 ─ 16
For background information see
chapter 4.2.7.3, "Preamble Sequences"
Remote command:
(SA)
(CSP)
Zero Correlation Zone Config
This parameter determines which N
CS
value of an N
CS
set is 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.
For background information see
chapter 4.2.7.3, "Preamble Sequences"
Remote command:
(SA)
(CSP)
Sequence Index
Enable "Auto" to detect the sequence index automatically or disable "Auto" and specify
the sequence index used by the UE. A manual configuration of the sequence index
may speed up the measurement.
The sequence index specifies which of the 64 preamble sequences of the cell is used
by the UE.
For background information see
chapter 4.2.7.3, "Preamble Sequences"
Remote command:
EVM Window Length
Length of the EVM window, defined as a number of samples. The standard (3GPP TS
36.101, Annex F) specifies the window length as a function of the preamble format.
The R&S
CMW uses the "Current" value. This value is linked to the value in the table,
corresponding to the current preamble format.
The window length defines the two sets of "l / h" modulation quantities in the result
tables; see
chapter 4.2.6, "Calculation of Modulation Results"
The minimum value of 1 FFT symbol actually corresponds to a window of zero length
so that EVM
h
= EVM
l
.
Remote command:
EVM Window Position
Position of the EVM window used for calculation of the trace results. While result tables
show both the results for low and high EVM window position, the diagram results are
only determined for the selected window position.
Remote command:
GUI Reference
深圳德标仪器
135-1095-0799