nrPDSCHPRBS

Generate PDSCH scrambling sequence

Syntax

[seq,cinit] = nrPDSCHPRBS(nid,rnti,q,n)

[seq,cinit] = nrPDSCHPRBS(nid,rnti,q,n,Name,Value)

Description

[seq,cinit] = nrPDSCHPRBS(nid,rnti,q,n)returns the firstnelements of the physical downlink shared channel (PDSCH) scrambling sequence. The function also returns the initialization valuecinitof the pseudorandom binary sequence (PRBS) generator. The initialization value depends on the scrambling identity numbernid, the radio network temporary identifier (RNTI) of the user equipment (UE)rnti, and the codeword numberq. The function implements TS 38.211 Section 7.3.1.1[1].

[seq,cinit] = nrPDSCHPRBS(nid,rnti,q,n,Name,Value)specifies additional output formatting options by using one or more name-value pair arguments. Unspecified options take their default values.

Examples

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Generate PDSCH Scrambling Sequence

打开生活的脚本

Generate the first 300 outputs of the PDSCH scrambling sequence when initialized with the specified physical layer cell identity number, RNTI, and codeword number.

ncellid = 17; rnti = 120; q = 0; n = 300; seq = nrPDSCHPRBS(ncellid,rnti,q,n)

seq =300x1 logical array0 1 1 0 1 1 0 1 0 0 ⋮

Input Arguments

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`nid`—Scrambling identity
integer

Scrambling identity, specified as an integer from 0 to 1023.nidis the physical layer cell identity number (0 to 1007) or higher layer parameterdataScramblingIdentityPDSCH(0 to 1023). For more information, see TS 38.331 Section 6.3.2.

Data Types:double

`rnti`—RNTI of UE
integer from 0 to 65,535

RNTI of the UE, specified as an integer from 0 to 65,535.

Data Types:double

`q`—Codeword number
`0`|`1`

Codeword number, specified as0or1.

Data Types:double

`n`—Number of elements in output sequence
nonnegative integer

Number of elements in output sequence, specified as a nonnegative integer.

Data Types:double

Name-Value Pair Arguments

Specify optional comma-separated pairs ofName,Valuearguments.Nameis the argument name and价值is the corresponding value.Namemust appear inside quotes. You can specify several name and value pair arguments in any order asName1,Value1,...,NameN,ValueN.

Example:“MappingType”、“signed'specifies nondefault sequence formatting.

`'MappingType'`—Output sequence formatting
`'binary'`(default) |`'signed'`

Output sequence formatting, specified as the comma-separated pair consisting of'MappingType'and one of these values:

'binary'— This value maps真正的to1andfalseto0. The data type of the output sequence islogical.
'signed'— This value maps真正的to–1andfalseto1. The data type of the output sequence isdouble. To specifysingledata type, use the'OutputDataType'name-value pair.

Data Types:char|string

`'OutputDataType'`—Data type of output sequence
`'double'`(default) |`'single'`

Data type of output sequence, specified as the comma-separated pair consisting of'OutputDataType'and'double'or'single'. This name-value pair applies only when'MappingType'is set to'signed'.

Data Types:char|string

Output Arguments

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`seq`— PDSCH scrambling sequence
logical column vector | numeric column vector

PDSCH scrambling sequence, returned as a logical or numeric column vector.seqcontains the firstnelements of the PDSCH scrambling sequence. If you set'MappingType'to'signed', the output data type is eitherdoubleorsingle. If you set'MappingType'to'binary', the output data type islogical.

Data Types:double|single|logical

`cinit`— Initialization value for PRBS generator
nonnegative integer

Initialization value for PRBS generator, returned as a nonnegative integer.

Data Types:double

References

[1]3GPP TS 38.211. “NR; Physical channels and modulation.”3rd Generation Partnership Project; Technical Specification Group Radio Access Network.

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using MATLAB® Coder™.

Usage notes and limitations:

Names and values in name-value pair arguments must be compile-time constants. For example, to specifysingledata type for the output, include{coder.Constant('OutputDataType'),coder.Constant('single')}in the-argsvalue ofcodegen. For more information, seecoder.Constant.

nrPDSCHPRBS

Syntax

Description