Viavi CellAdvisor 5G, User Manual

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CellAdvisor 5G User's Guide
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- Tap Modulation type and select the options from: QPSK , 16 QAM , 64 QAM , or 256QAM
e Tap PDSCH DM-RS and do the following steps:
PDSCH DMRS is a special type of physical layer signal which functions as a reference signal for decoding PDSCH in 5G
NR:
- Select N
SCID
between 0 or 1 . The quantity N
SCID
ϵ {0,1} is given by the DM-RS sequence initialization field, if DCI is
associated with the PDSCH transmission, 1 is selected and, otherwise 0 is used.
- Select N
ID
source between Scrambling ID and PCI . Set Scrambling ID for configuring with the
higher-layer
parameter data-scrambling identity
or PCI from the physical cell ID and input the required value using the on-
screen keyboard.
- Select between Mapping Type A and B . Set Mapping Type A to start only at symbol 2 or 3 within a slot, meaning that
SLIV (Start and Length Indicator for the time domain allocation for PDSCH) that starts from symbol 4 or higher cannot
use this type of DMRS and Mapping Type B to start always at the first symbols of scheduled SLIV.
- Select between Configuration Type 1 and 2 . In Configuration type 1, the minimum resource element group in
frequency domain is one RE. In Configuration type 2, the minimum resource element group in frequency domain is
two consecutive REs.
- Select DM-RS Type A Position between pos2 and pos3 to set the PDSCH DM-RS position for mapping type A.
- Select DM-RS Additional Position to set the Position for additional DM-RS in DL.
- Select DM-RS Duration between Single and Double . Set Single when single-symbol DM-RS is used or Double
when double (two) symbols are used.
- Set Antenna Port to be used as reference for initial synchronization for DM-RS. Usable antenna port is determined
by Configuration Type and DM-RS Duration.
- Set Power Boosting in dB (relative) of the DMRS associated with the PDSCH physical channel relative to
PDSCH power.
NOTE
You need to make sure PDSCH DM-RS setting is accurately done to get the right analysis data. For more details
on setting, you can find it in the following location:
https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=3213 and check
the latest 38.211 documentation.
f Tap to switch PT-RS to On or Off and when On, do the following steps:
- Select K
PT-RS
to set the PTRS period in subcarrier in the frequency domain between 2 and 4 .
- Select L
PT-RS
to
set the start PTRS symbol in time domain from the options: 1 , 2 , and 4 .
- Select Resource Element Offset to set PT-RS resource element offset from Offset00 , Offset01 , Offset10 , and
Offset11 .
- Select N
RNTI
to set the physical channel.
g Tap Summary to check all the parameters are accurately set. o the following steps:
- PDSCH Preview displays resources that are assigned PDSCH within BWP (X axis: symbol, Y axis: subcarrier).
h Tap the Done button if you finish all settings.