Rate Matching
Transmission rate matching.
Description
The Rate Matching block performs baud rate matching for LDPC (Low-Density Parity-Check) data coding. The procedure includes bit selection, interleaving, and combining code block segments into a single output vector in accordance with TS 38.212 Sections 5.4.2 and 5.5.
Parameters
Carrier
#
NCellID —
cell identifier
Real number
Details
A physical layer cell identifier specified as an integer from 0 to 1007.
| Default value |
|
| Program usage name |
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| Tunable |
No |
| Evaluatable |
Yes |
#
NSizeGrid —
number of remote objects in the telecom operator’s resource table
Real number
Details
The number of remote objects in the service provider’s resource table, specified as an integer from 1 to 275. The by default value corresponds to the maximum number of resource blocks for a 10 MHz carrier and a subcarrier spacing of 15 kHz.
| Default value |
|
| Program usage name |
|
| Tunable |
No |
| Evaluatable |
Yes |
#
Subcarrier spacing (kHz) —
subcarrier spacing in kHz
15 | 30 | 60 | 120
Details
Subcarrier spacing in kHz for all channels and carrier reference signals.
Selectable values: 15 or 30 for FR1, 60 or 120 for FR2.
| Values |
|
| Default value |
|
| Program usage name |
|
| Tunable |
No |
| Evaluatable |
No |
PDSCH
#
Number of PDSCH transmission layers —
number of data transmission layers for the PDSCH channel
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8
Details
The number of data transmission layers for the PDSCH (Physical Downlink Shared Channel) channel in 5G NR.
| Values |
|
| Default value |
|
| Program usage name |
|
| Tunable |
No |
| Evaluatable |
No |
#
Number of PDSCH transmission antennas —
number of antennas for PDSCH channel signal transmission
1 | 2 | 4 | 8 | 16 | 32 | 64 | 128
Details
The number of antennas used to carry the PDSCH (Physical Downlink Shared Channel) channel signal in the 5G NR standard.
| Values |
|
| Default value |
|
| Program usage name |
|
| Tunable |
No |
| Evaluatable |
No |
#
Modulation —
codeword modulation scheme
QPSK | 16QAM | 64QAM | 256QAM
Details
Codeword modulation scheme.
| Values |
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| Default value |
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| Program usage name |
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| Tunable |
No |
| Evaluatable |
No |
#
TargetCodeRate —
code frequency
Real number
Details
The code frequency as a scalar.
Values must be in the range from 0 to 1024.
| Default value |
|
| Program usage name |
|
| Tunable |
No |
| Evaluatable |
Yes |
#
Enable PRBSet —
Use of a set of physically dedicated resource blocks for data transmission
Logical
Details
Enable or disable the use of a set of physically allocated resource blocks for data transmission. If this checkbox is selected, the PDSCH PRB allocation parameter can be used, which specifies specific frequency resource ranges for signalling or data transmission at the physical layer in 5G NR. This parameter defines which blocks of frequency spectrum from the available spectrum can be assigned to a channel. Using PDSCH PRB allocation allows you to specify specific groups of frequency blocks and flexibly allocate frequency resources depending on communication requirements and network conditions.
| Default value |
|
| Program usage name |
|
| Tunable |
No |
| Evaluatable |
No |
# PDSCH PRB allocation — frequency resource ranges
Details
The frequency resource ranges that can be used to transmit signals or data at the physical layer.
Dependencies
To use this parameter, select the Enable PRBSet check box.
| Default value |
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| Program usage name |
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| Tunable |
No |
| Evaluatable |
Yes |
#
Enable or disable PT-RS —
use of phase change tracking signals
Logical
Details
Enable or disable the use of PT-RS (Phase Tracking Reference Signal) in the PDSCH (Physical Downlink Shared Channel) in 5G NR.
PT-RS serves to correct and compensate for phase noise due to transmitter and receiver instabilities. It is particularly useful at high modulation orders such as 256QAM or 1024QAM where the impact of phase errors can be significant. Enabling PT-RS improves data transmission quality by increasing synchronisation accuracy, especially under conditions of frequency interference or fast motion.
| Default value |
|
| Program usage name |
|
| Tunable |
No |
| Evaluatable |
No |