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Chapter 9 Using 5G DSS Signal Analyzer
Conducting OTA measurement
ment settings can be saved and recalled as a file by selecting File Type as Setup and
load the file onto the instrument using the Save/Load icons on the side bars.
To set measure setup
1
Tap the Setup (
2
Tap to switch Carrier Auto Search to Start to start searching the SSB frequency
and apply it or to Stop to stop searching.
3
Tap to switch Radio Config and set Duplex Type (FDD/TDD), DSS Type (Co-
channel) and Technology (LTE/NR) and other related parameters as below:
You can select Co-channel to find NR frequency based on the LTE operating
frequency in co-channel and select Adjacent channel to search both LTE and NR
frequency. Note that Adjacent channel will be available in the next release.
•
When LTE is selected as Technology, do the following steps:
–
–
–
–
•
When NR is selected as Technology, do the following steps:
–
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) icon in the side bar.
NOTE
If searching is unavailable, the instrument displays a pop-up message saying
that it fails to detect NR (SSB)
frequency.
Select Bandwidth (MHz) from the following choices: 20, 15, 10, or 5.
Select MIMO between 2x2 and 4x4 to set the number of antenna ports. If the
MIMO is set to 2x2, the antenna ports 2 and 3 are disabled.
Select Cyclic Prefix between Normal and Extended. Cyclic prefix works as
a buffer region or guard interval to protect the OFDM signals from inter
symbol interference.
-
Normal: Intended to be sufficient for the majority of scenarios
-
Extended: Intended for scenarios with particularly high delay spread
Select PHICH Ng between Normal and Extended and then to set the
number of PHICH groups (Ng): 1/6, 1/2, 1, or 2. The PHICH group value/Ng
is decided based on the number of PHICH groups per subframe. PHICH
duration is a higher layer parameter configured either as Normal or Extended
that says the demodulator how many symbols per subframe are used by
PHICH.
-
Normal: There are 8 PHICH sequences in one PHICH group (4
symbols).
-
Extended: There are 4 PHICH sequences in one PHICH group (2
symbols)
Select Sub-Carrier Spacing as 15 kHz (Case A). The standard for NR SCS is
15 kHz. The instrument supports 15 kHz of sub-carrier spacing.
SPA06MA-O User's Guide
22145360, R005
April 2021
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