PDSCH Modulation
PDSCH modulation.
blockType: PDSCHModulation
|
Path in the library: |
Description
Block PDSCH Modulation creates a matrix containing the modulation symbols of the common physical downlink PDSCH, in accordance with sections 7.3.1.1-7.3.1.3 of the standard [1], taking into account the carrier configuration, the configuration of the PDSCH channel and the DL-SCH codewords. The block performs pre-encoding for PDSCH binding in accordance with section 5.1.2.3 of the standard [2] to obtain pre-encoded PDSCHSym characters and corresponding PDSCHInd indexes.
Ports
Input
#
EncoderTR
—
The code word is DL-SCH
the matrix
Details
The code word is DL-SCH.
| Data types |
|
| Complex numbers support |
No |
#
WTX
—
the pre-coding matrix
the matrix | scalar
Details
The pre-coding matrix.
| Data types |
|
| Complex numbers support |
No |
Output
#
PDSCHSym
—
PDSCH modulation symbols
the matrix
Details
PDSCH modulation symbols in the form of a complex matrix.
| Data types |
|
| Complex numbers support |
No |
#
PDSCHInd
—
indexes of PDSCH modulation symbols
the matrix
Details
Indexes of PDSCH modulation symbols.
| Data types |
|
| Complex numbers support |
No |
Parameters
Carrier
#
NCellID —
physical layer cell ID
Real number
Details
The identifier of the physical layer cell, set as an integer from 0 before 1007.
| Default value |
|
| Program usage name |
|
| Tunable |
No |
| Evaluatable |
Yes |
#
NSizeGrid —
the number of deleted objects in the telecom operator’s resource table
Real number
Details
The number of deleted objects in the telecom operator’s resource table, indicated as an integer from 1 before 275. The default value is 51, corresponds to the maximum number of resource blocks for the carrier 10 MHz and the distance between subcarriers 15 kHz.
| Default value |
|
| Program usage name |
|
| Tunable |
No |
| Evaluatable |
Yes |
#
Subcarrier spacing (kHz) —
the distance between subcarriers in kHz
15 | 30 | 60 | 120
Details
The distance between subcarriers in kHz for all channels and carrier reference signals.
Values to choose from: 15 or 30 for FR1, 60 or 120 for FR2.
| Values |
|
| Default value |
|
| Program usage name |
|
| Tunable |
No |
| Evaluatable |
No |
#
CyclicPrefix —
length of the cyclic prefix
Normal | Extended
Details
The length of the cyclic prefix. Options to choose from:
-
Normal— use this value to specify the usual cyclic prefix. This parameter corresponds to14OFDM symbols in the slot. -
Extended— use this value to specify an extended cyclic prefix. This parameter corresponds to12OFDM symbols in the slot. For the numbering specified in the standard [1] in section 4.2, the length of the extended cyclic prefix is used only for the distance between subcarriers60kHz.
| 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, physical channel of the common downlink) in 5G NR.
| Values |
|
| Default value |
|
| Program usage name |
|
| Tunable |
No |
| Evaluatable |
No |
#
Number of PDSCH transmission antennas —
number of antennas for transmitting the PDSCH channel signal
1 | 2 | 4 | 8 | 16 | 32 | 64 | 128
Details
The number of antennas used to transmit the PDSCH (Physical Downlink Shared Channel) signal in the 5G standard NR.
| Values |
|
| Default value |
|
| Program usage name |
|
| Tunable |
No |
| Evaluatable |
No |
#
Modulation —
code word modulation scheme
QPSK | 16QAM | 64QAM | 256QAM
Details
The code word modulation scheme.
| Values |
|
| Default value |
|
| Program usage name |
|
| Tunable |
No |
| Evaluatable |
No |
#
TargetCodeRate —
code frequency
Real number
Details
The code frequency in the form of a scalar in the range from 0 before 1024.
| Default value |
|
| Program usage name |
|
| Tunable |
No |
| Evaluatable |
Yes |
#
Enable PRBSet —
using a set of physically allocated resource blocks for data transfer
Logical
Details
Enable or disable the use of a set of physically allocated resource blocks for data transfer. If this option is selected, you can use the parameter PDSCH PRB allocation, which sets specific frequency resource ranges for transmitting signals or data at the physical layer in 5G NR. This parameter determines which blocks of the available frequency spectrum can be assigned to a channel. Using PDSCH PRB allocation It 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
Ranges of frequency resources that can be used to transmit signals or data at the physical layer.
Dependencies
To use this option, check the box Enable PRBSet.
| Default value |
|
| Program usage name |
|
| Tunable |
No |
| Evaluatable |
Yes |
#
Enable or disable PT-RS —
using phase change tracking signals
Logical
Details
Enable or disable the use of phase change tracking signals (PT-RS, Phase Tracking Reference Signal) in the PDSCH (Physical Downlink Shared Channel) channel in 5G NR. PT-RS is used to correct and compensate for phase noise caused by instabilities of the transmitter and receiver. It is especially useful at high modulation orders, such as 256QAM or 1024QAM where the influence of phase errors can be significant. The inclusion of PT-RS improves data transmission quality by increasing synchronization accuracy, especially in conditions of frequency interference or fast movement.
| Default value |
|
| Program usage name |
|
| Tunable |
No |
| Evaluatable |
No |