ltePBCHIndices

PBCH resource element indices

Syntax

ind = ltePBCHIndices(enb)

ind = ltePBCHIndices(enb,opts)

Description

ind = ltePBCHIndices(enb) returns an N-by-CellRefP matrix of resource element (RE) indices for the Physical Broadcast Channel (PBCH) given the parameter fields of structure enb. By default, the indices are returned in 1-based linear indexing form that can directly index elements of a 3-D array representing the subframe resource grid for CellRefP antennas. These indices are ordered as the PBCH modulation symbols should be mapped. Alternative indexing formats can also be generated. The PBCH is only transmitted in first subframe of each frame.

ind = ltePBCHIndices(enb,opts) formats the returned indices using options defined by opts.

Examples

Generate PBCH RE Indices

Generate zero-based PBCH resource element indices in linear form for RMC R.14.

enb = lteRMCDL('R.14');
ind = ltePBCHIndices(enb,{'0based'});
ind(1:4,:)

ans = 4x4 uint32 matrix

    4465   12865   21265   29665
    4466   12866   21266   29666
    4468   12868   21268   29668
    4469   12869   21269   29669

Input Arguments

enb — Cell-wide settings

structure

Cell-wide settings, specified as a structure. enb contains the following fields.

NDLRB — Number of downlink resource blocks

scalar value

Number of downlink resource blocks, specified as a scalar value.

NCellID — Physical layer cell identity

scalar integer

Physical layer cell identity, specified as a scalar integer.

CyclicPrefix — Cyclic prefix length

'Normal' (default) | optional | 'Extended'

Cyclic prefix length, specified as 'Normal' or 'Extended'.

CellRefP — Number of cell-specific reference signal antenna ports

1 (default) | optional | 2 | 4

Number of cell-specific reference signal antenna ports, specified as 1, 2, or 4.

NSubframe — Subframe number

0 (default) | optional | scalar integer

Subframe number, specified as a scalar integer.

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	'ind' (default)	The returned indices are in linear index style.
	'sub'	The returned indices are in [subcarrier,symbol,port] subscript row style.
Index base	'1based' (default)	The returned indices are one-based.
	'0based'	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 — PBCH resource element indices

numeric matrix

PBCH resource element indices, returned as a numeric matrix of size N-by-CellRefP.

Data Types: double

Version History

Introduced in R2014a