ltePUCCH2DRSIndices
PUCCH format 2 DRS resource element indices
Syntax
Description
Examples
Generate PUCCH Format 2 DM-RS Indices
Generate PUCCH format 2 DM-RS RE indices for a 1.4 MHz bandwidth and PUCCH resource index 0. Use default values for all other parameters.
Initialize UE-specific and channel configuration structures. Generate PUCCH format 2 DM-RS indices.
ue.NULRB = 6;
ue.CyclicPrefixUL = 'Normal';
chs.ResourceIdx = 0;
ind = ltePUCCH2DRSIndices(ue,chs);
ind(1:4)
ans = 4x1 uint32 column vector
73
74
75
76
Generate PUCCH Format 2 DM-RS Indices for Four Antennas
Generate the PUCCH format 2 DM-RS indices for four transmit antenna paths, and display the output information structure.
Initialize UE-specific and channel configuration structures. Generate PUCCH 2 DM-RS indices and information outputs.
ue.NULRB = 6;
ue.CyclicPrefixUL = 'Normal';
chs.ResourceIdx = [0 37 4 111];
[ind,info] = ltePUCCH2DRSIndices(ue,chs);
Because there are four antennas, the DM-RS indices are output as a four-column vector and the info
output structure contains four elements. View ind
and the size of info
to confirm.
ind(1:6,:)
ans = 6x4 uint32 matrix
73 1129 2089 3109
74 1130 2090 3110
75 1131 2091 3111
76 1132 2092 3112
77 1133 2093 3113
78 1134 2094 3114
size(info)
ans = 1×2
1 4
View the contents of one of the info
structure elements.
info(4)
ans = struct with fields:
PRBSet: [1 4]
RBIdx: 9
Generate PUCCH Format 2 DM-RS Indices Varying Indexing Style
Generate the PUCCH format 2 DM-RS indices for two transmit antenna paths, and output in subscript indexing form.
Initialize UE-specific and channel configuration structures and the indexing option parameter. Generate PUCCH 2 DM-RS indices and information outputs.
ue.NULRB = 6; ue.CyclicPrefixUL = 'Normal'; chs.ResourceIdx = [0 4]; [ind,info] = ltePUCCH2DRSIndices(ue,chs,{'sub'});
Using 'sub' indexing style, the indices are output in [subcarrier, symbol, antenna] subscript form. View the midpoint of ind and observe the antenna index change.
size(ind)
ans = 1×2
96 3
ind(46:51,:)
ans = 6x3 uint32 matrix
70 13 1
71 13 1
72 13 1
1 2 2
2 2 2
3 2 2
size(info)
ans = 1×2
1 2
Because there are two antennas, the info output structure contains two elements. View one of the info
structure elements.
info(2)
ans = struct with fields:
PRBSet: [0 5]
RBIdx: 0
Input Arguments
ue
— UE-specific settings
structure
UE-specific settings, specified as a structure containing these fields.
NULRB
— Number of uplink resource blocks
integer from 6 to 110.
Number of uplink resource blocks, specified as an integer from 6 to 110.
Data Types: double
CyclicPrefixUL
— Cyclic prefix length for uplink channels
'Normal'
(default) | 'Extended'
| optional
Cyclic prefix length for uplink channels, specified as 'Normal'
or 'Extended'
.
Data Types: char
| string
chs
— Channel transmission configuration
structure
Channel transmission configuration, specified as a structure containing the following fields.
ResourceIdx
— PUCCH resource indices
0 (default) | 0,...,1185 | integer | vector of integers | optional
PUCCH resource indices, specified as an integer or a vector of integers. Values range from 0 to 1185. There is one index for each transmission antenna. These indices determine the cyclic shift and orthogonal cover used for transmission. ()
Data Types: struct
opts
— Output format options for resource element indices
character vector | cell array of character vectors | string array
Output format options for resource element indices, specified as a character vector, cell
array of character vectors, or string array. For convenience, you can
specify several options as a single character vector or string scalar by a
space-separated list of values placed inside the quotes. Values for
opts
when specified as a character vector include
(use double quotes for string) :
Category | Options | Description |
---|---|---|
Indexing style |
| The returned indices are in linear index style. |
| The returned indices are in | |
Index base |
| The returned indices are one-based. |
| The returned indices are zero-based. |
Example: 'ind 1based'
, "ind 1based"
,
{'ind','1based'}
, or ["ind","1based"]
specify
the same formatting options.
Data Types: char
| string
| cell
Output Arguments
ind
— Resource element indices
integer column vector | three-column integer matrix
Resource element indices, returned as an integer column vector
or a three-column integer matrix. By default the indices are returned
in one-based linear indexing form that can directly index elements
of a resource matrix. These indices are ordered according to PUCCH
format 2 DRS modulation symbol mapping. The opts
input
offers alternative indexing formats. The indices for each antenna
are in the columns of ind
, with the number of
columns determined by the number of PUCCH resource indices specified
in chs
.
ResourceIdx
.
Example: [145,146,147,...]
Data Types: uint32
info
— PUCCH format 2 DRS information
structure array
PUCCH format 2 DRS information, returned as a structure array with elements corresponding to each transmit antenna and containing these fields.
PRBSet
— Indices occupied by PRB in each slot of subframe
nonnegative integer vector
Indices occupied by PRB in each slot of the subframe, returned as a nonnegative integer vector. The indices are zero-based.
Example: [0,5]
Data Types: double
RBIdx
— PUCCH logical resource block index
nonnegative integer
PUCCH logical resource block index, returned as a nonnegative integer. (m)
Data Types: double
Data Types: struct
Version History
Introduced in R2014a
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