Precoding Matrix
Creation of a pre-coding matrix.
Description
The Precoding Matrix block creates a pre-coding matrix to be used when the first transport block is transmitted.
Ports
Input
Grid - matrix of initial channel estimation for data transmission
matrix
Initial channel estimation for data transmission in 5G. This estimation is required to determine the pre-coding before starting data transmission in the first time slot.
Dependencies
To use this port, select the Input ports checkbox.
Data types: ComplexF64.
Parameters
Main
Input ports - enable input port for the initial channel estimation matrix
off (by default) | on
Enable or disable usage of the port usage for the initial channel estimation matrix on which the pre-coding matrix is built.
Block parameter |
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By default |
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Carrier
NCellID - physical layer cell identifier
1 (by default) | ` integer from 0 to 1007`
Physical level cell identifier specified as an integer from 0 to 1007.
Block parameter |
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Values |
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By default |
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NSizeGrid - number of deleted objects in the service provider’s resource table
51 (by default) | ` integer from 1 to 275`
The number of deleted objects in the service provider resource table, specified as an integer from 1 to 275. The by default value of 51 corresponds to the maximum number of resource blocks for a 10 MHz carrier and a subcarrier spacing of 15 kHz.
Block parameter |
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Values |
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By default |
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Subcarrier spacing (kHz) - subcarrier spacing in kHz
15(by default) | 30 | 60 | 120
Subcarrier spacing in kHz for all channels and carrier reference signals.
Selectable values: 15 or 30 for FR1, 60 or 120 for FR2.
Block parameter |
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Values |
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By default |
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CyclicPrefix - length of the cyclic prefix
Normal (By default) | `Extended `
Length of cyclic prefix. Options to select:
-
Normal- Use this value to specify a normal cyclic prefix. This parameters corresponds to 14 OFDM characters in the slot. -
Extended- use this value to specify an extended cyclic prefix. This parameter corresponds to 12 OFDM characters in the slot. For the numbering specified in the standard [1] in section 4.2, the extended cyclic prefix length applies only for 60 kHz subcarrier spacing.
Block parameter |
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By default |
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PDSCH
Number of PDSCH transmission layers - number of transmission layers for PDSCH channel
1 (by default) | 2 | 3 | 4 | 5 | 6 | 7| 8
Number of data transmission layers for PDSCH (Physical Downlink Shared Channel) channel in 5G NR.
Block parameter |
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Values |
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By default |
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Number of PDSCH transmission antennas - number of antennas for PDSCH channel signal transmission
1 (by default) | 2 | 4 | 8 | 16 | 32 | 64| 128
Number of antennas used to carry the PDSCH (Physical Downlink Shared Channel) channel signal in the 5G NR standard.
Block parameter |
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Values |
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By default |
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Enable PRBSet - usage of a set of physically allocated resource blocks for data transmission
enabled (by default) | enabled
Enable or disable usage of a set of physically allocated resource blocks for data transfer. If this checkbox is selected, the PDSCH PRB allocation parameter can be used, which sets specific frequency resource ranges for signal or data transmission at the physical layer in 5G NR. This parameter determines which blocks of frequency spectrum from the available spectrum can be assigned to a channel. The usage of PDSCH PRB allocation allows to specify specific groups of frequency blocks and flexibly allocate frequency resources depending on communication requirements and network conditions.
Block parameter |
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Values |
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By default |
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PDSCH PRB allocation - frequency resource ranges
0:7 (By default)
Frequency resource ranges that can be used for signalling or data transmission at the physical layer.
Dependencies
To use this parameter, select the Enable PRBSet check box.
Block parameter |
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Values |
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By default |
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