lteDLSCHInfo
DL-SCH segmentation information
Description
Examples
Display DL-SCH Segmentation Information
Show the sizing information before turbo coding for an input transport block of length 132. The info structure fields shows that there are 4 filler bits and the total size of the one segment after CRC addition is 160.
lteDLSCHInfo(132)
ans = struct with fields:
C: 1
Km: 0
Cm: 0
Kp: 160
Cp: 1
F: 4
L: 0
Bout: 160
Display DL-SCH Transport Channel Information for RMC R.11
Show the DL-SCH transport channel sizing information for an R.11 RMC.
rmc = lteRMCDL('R.11');
lteDLSCHInfo(rmc,rmc.PDSCH,rmc.PDSCH.TrBlkSizes(1))
ans = struct with fields:
C: 3
Km: 4288
Cm: 0
Kp: 4352
Cp: 3
F: 0
L: 24
Bout: 13056
NLayers: 2
NL: 2
Qm: 4
NIR: 0
RV: 0
Input Arguments
enb
— eNodeB cell-wide settings
structure
eNodeB cell-wide settings, specified as a structure containing these parameter fields:
Parameter Field | Required or Optional | Values | Description | |
---|---|---|---|---|
DuplexMode | Optional |
| Duplexing mode, specified as either:
| |
When | ||||
TDDConfig | Optional | 0, 1 (default), 2, 3, 4, 5, 6 | Uplink–downlink configuration | |
When | ||||
CellRefP | Optional | 1, 2, 4 | Number of cell-specific reference signal (CRS) antenna ports |
chs
— Channel configuration
structure
Channel configuration, specified as a structure. It defines aspects of the PDSCH onto which the codewords are mapped. It also defines the DL-SCH soft buffer size and redundancy versions of the generated codewords.
chs
can contain the following fields.
Parameter Field | Required or Optional | Values | Description | ||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Modulation | Required | 'QPSK' , '16QAM' , '64QAM' ,
'256QAM' ,
'1024QAM' | Modulation type, specified as a character vector, cell array of character vectors, or string array. If blocks, each cell is associated with a transport block. | ||||||||||||||||||||
NLayers | Required | Integer from 1 to 8 | Total number of transmission layers associated with the transport block or blocks. | ||||||||||||||||||||
TxScheme | Required |
| PDSCH transmission scheme, specified as one of the following options.
| ||||||||||||||||||||
RV | Required | Integer vector (0,1,2,3). A one or two column matrix (for one or two codewords). | Specifies the redundancy version for one or two codewords used
in the initial subframe number, | ||||||||||||||||||||
NSoftbits | Optional | Nonnegative scalar integer (default 0) | Total number of soft buffer bits. The default setting of 0 signifies that there is no buffer limit. |
blklen
— Transport block length
positive scalar integer | two-element positive integer vector
Transport block length, specified as a positive integer or a two-element positive integer vector. A two-element vector defines the length of transport blocks for two codewords.
Data Types: double
Output Arguments
info
— DL-SCH code block segmentation information
structure array
DL-SCH code block segmentation information, returned as a structure array including the following fields.
Parameter Field | Description | Values |
---|---|---|
C | Total number of code blocks | Nonnegative scalar integer |
Km | Lower code block size (K–) | Nonnegative scalar integer |
Cm | Number of code blocks of size | Nonnegative scalar integer |
Kp | Upper code block size (K+) | Nonnegative scalar integer |
Cp | Number of code blocks of size | Nonnegative scalar integer |
F | Number of filler bits in first block | Nonnegative scalar integer |
L | Number of segment cyclic redundancy check (CRC) bits | Nonnegative scalar integer |
Bout | Total number of bits in all segments | Nonnegative scalar integer |
When syntax includes | ||
NLayers | Number of layers associated with one codeword | Nonnegative scalar integer |
NL | Number of layers used in rate matching calculation | Nonnegative scalar integer |
Qm | Bits per symbol variable used in rate matching calculation | Nonnegative scalar integer |
NIR | Number of soft bits associated with transport block. Soft buffer size for entire input transport block | Nonnegative scalar integer |
RV | RV value associated with one codeword Included if RV is present at the input. | Nonnegative scalar integer |
Version History
Introduced in R2014a
See Also
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