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nrDLSCHInfo

Get downlink shared channel (DL-SCH) information

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Syntax

info = nrDLSCHInfo(tBlkLen,targetCodeRate)

Description

example

info= nrDLSCHInfo(tBlkLen,targetCodeRate)returns a structure containing DL-SCH information for an input transport block sizetBlkLenand target code ratetargetCodeRate. The DL-SCH information includes the cyclic redundancy check (CRC) attachment, code block segmentation (CBS), and channel coding.

Examples

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Open Live Script

Show DL-SCH information before rate matching for an input transport block of length 8456 and target code rate 517/1024. The displayed DL-SCH information shows:

  • The transport block has 312 filler bits per code block.

  • The number of bits per code block, after CBS, is 4576.

  • The number of bits per code block, after low-density parity-check (LDPC) coding, is 13,728.

tBlkLen = 8456; targetCodeRate = 517/1024; nrDLSCHInfo(tBlkLen,targetCodeRate)
ans =struct with fields:CRC: '24A' L: 24 BGN: 1 C: 2 Lcb: 24 F: 312 Zc: 208 K: 4576 N: 13728

Input Arguments

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Transport block size, specified as a nonnegative integer.

Data Types:double

Target code rate, specified as a real number in the range (0, 1).

Data Types:double

Output Arguments

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DL-SCH information, returned as a structure containing these fields.

Fields Values Description
CRC

'16','24A'

CRC polynomial selection
L

0,16,24

Number of CRC bits
BGN

1,2

LDPC base graph selection
C

Positive integer

Number of code blocks
Lcb

0,24

Number of parity bits per code block
F

Nonnegative integer

Number of filler bits per code block
Zc

Positive integer

Lifting size selection
K

Nonnegative integer

Number of bits per code block after CBS
N

Nonnegative integer

Number of bits per code block after LDPC coding

Extended Capabilities

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

版本历史

Introduced in R2018b

See Also

Objects

Functions