PDCCH DM-RS

Channel assessment using the PDCCH DM-RS.

pdcch dm rs

Description

Block PDCCH DM-RS constructs every possible PDCCH DM-RS sequence and performs channel and noise estimation. Block PDCCH DM-RS defines a predefined grid of reference resources in the PDCCH DM-RS.

Ports

Input

PDCCHSym - information for a specific aggregation level
matrix

A cell that represents information for a particular level of aggregation, in the form of a matrix with complex values.

Data types: ComplexF64.

PDCCHDMRS - information for a particular level of aggregation
matrix

A cell that represents information for a particular aggregation level, in the form of a matrix with real values.

Data types: Float64.

SSBInd - MIB information and parameters for the block
vector

MIB information and parameters for the block (NID structure and cell identifier ncelid) as a vector with integer values.

Data types: Int64.

ResGrid - demodulated signal as a complex matrix
matrix

Demodulated signal returned as a complex matrix.

Data types: ComplexF64.

Output

ChEst - channel estimation information returned as a complex matrix
matrix

Channel estimation with usage of PDCCH DM-RS.

Data types: ComplexF64.

NoisEst - estimated noise variance information
`positive scalar

Additive noise estimation in PDCCH DM-RS.

Data types: Float64.

Parameters

Main

Block Pattern - frequency range identifier
Case A | Case B (by default) | Case C | Case D | Case E

For the 5G standard, the frequency range used is specified in the documentation.

Frequency range designation Frequency range

Frequency range designation	Frequency range
FR1: `Case A`,`Case B`,`Case C`	410 MHz - 7125 MHz
FR2: `Case D`,`Case E`	24250 MHz - 52600 MHz

FR1: Case A,Case B,Case C

410 MHz - 7125 MHz

FR2: Case D,Case E

24250 MHz - 52600 MHz

Usage in programme code
Block parameter	`BlockPattern`
Values	`Case A` \| `Case B` \| `Case C` \| `Case D` \| `Case E`
By default	`Case B`

Bitmap of SS blocks transmitted - number of information blocks transmitted
8 (by default) | 4 | 64

Number of information blocks transmitted.

Usage in program code
Block parameter	`TransmittedBlocks`
Values	`4` \| `8` \| `64`
By default	`8`

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.

Usage in program code
Block parameter	`SubcarrierSpacingCommon`
Values	`15` \| `30` \| `60` \| `120`
By default	`15`

Minimum channel bandwidth for the NRb (MHz) - setting the minimum channel bandwidth for the NR band in MHz
5 (By default) | 10 | 40

Set the minimum channel bandwidth for the NR band in MHz.

Usage in program code
Block parameter	`MainChannelBW`
Values	`5` \| `10` \| `40`
By default	`5`

References

Glossary: Standard 5G