Index generation options, 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):
Option | Values | Description |
---|
Indexing style | 'ind' (default), 'sub'
| Style for the returned indices, specified as one of the following
options.
'ind' — returns the indices
in linear index form as a column vector (default)
'sub' — returns the indices
in [subcarrier, symbol, antenna] subscript row
style. The number of rows in the output, ind ,
is the number of resource elements (NRE).
Thus, ind is an NRE-by-3
matrix.
|
Index base | '1based' (default), '0based'
| Base value of the returned indices. Specify
'1based' to generate indices where the first value is 1. Specify
'0based' to generate indices where the first value is 0. |
Whether in linear or subscript format style, the indices are
always formed out of [subcarrier, symbol, antenna]
subscripts.
These subscripts identify the used resource elements in each subframe
resource grid per antenna port.
For the EPDCCH, the antenna subscripts have the possible range
1...4 (if index is one-based), which represents antenna ports p =
107...110. For a localized EPDCCH transmission, the antenna subscripts
are a single value out of 1...4, dependent on the RNTI and ECCEs selected.
For a distributed EPDCCH transmission, the antenna subscripts alternate
between one of two values: {1,3} (p = 107,109)
for normal cyclic prefix, and {1,2} (p = 107,108)
for extended cyclic prefix. See TS 36.211 [1], Section 6.8A.5. Use these indices to index the
subframe grid directly. The grid comprises the four possible EPDCCH
antenna ports (p = 107...110) and is represented
as an.NSC-by-NSYM-by-4
array.
Example: 'ind 1based'
, "ind 1based"
,
{'ind','1based'}
, or
["ind","1based"]
specify the same formatting
options.
Data Types: char
| string
| cell