Main Content

nrPDSCHPTRSIndices

Generate PDSCH PT-RS Indices

所有的页面崩溃

Syntax

ind = nrPDSCHPTRSIndices(carrier,pdsch)
ind = nrPDSCHPTRSIndices(carrier,pdsch,Name,Value)

Description

example

ind= nrPDSCHPTRSIndices(carrier,pdsch)returnsind, which contains 1-based phase tracking reference signal (PT-RS) resource elements (RE) of the physical downlink shared channel (PDSCH), as defined in TS 38.211 Section 7.4.1.2.2[1]. The function returnsindin linear form, for given carrier configurationcarrierand physical downlink shared channel configurationpdsch.

ind= nrPDSCHPTRSIndices(carrier,pdsch,Name,Value)specifies output formatting options by using one or more name-value pair arguments. Unspecified options take default values.

Examples

全部折叠

Open Live Script

Create a carrier configuration object with default properties. This object corresponds to a 10 MHz carrier.

carrier = nrCarrierConfig;

Create a default PDSCH configuration object, and then enable the PT-RS configuration.

pdsch = nrPDSCHConfig; pdsch.EnablePTRS = 1;

Create a PDSCH phase tracking reference signal (PT-RS) configuration object with specified properties.

ptrs = nrPDSCHPTRSConfig; ptrs.TimeDensity = 2; ptrs.FrequencyDensity = 4; ptrs.REOffset ='10';

Assign the PDSCH PT-RS configuration object to PTRS property of PDSCH configuration object.

pdsch.PTRS = ptrs;

Generate PDSCH PT-RS symbols of data type single.

sym = nrPDSCHPTRS(carrier,pdsch,'OutputDataType','single')
sym =78x1 single column vector-0.7071 - 0.7071i -0.7071 - 0.7071i 0.7071 - 0.7071i 0.7071 - 0.7071i 0.7071 - 0.7071i -0.7071 - 0.7071i -0.7071 + 0.7071i -0.7071 - 0.7071i -0.7071 + 0.7071i 0.7071 + 0.7071i ⋮

Generate PDSCH PT-RS indices in subscript form and set the index orientation to bandwidth part.

ind = nrPDSCHPTRSIndices(carrier,pdsch,'IndexStyle','subscript','IndexOrientation','bwp')
ind =78x3 uint32 matrix19 1 1 67 1 1 115 1 1 163 1 1 211 1 1 259 1 1 307 1 1 355 1 1 403 1 1 451 1 1 ⋮

Input Arguments

全部折叠

Carrier configuration parameters for a specific OFDM numerology, specified as annrCarrierConfigobject. This function uses only these properties of thenrCarrierConfigobject.

PDSCH configuration parameters, specified as annrPDSCHConfigobject. This function only uses thesenrPDSCHConfigobject properties.

Name-Value Arguments

Specify optional pairs of arguments asName1=Value1,...,NameN=ValueN, whereNameis the argument name andValueis the corresponding value. Name-value arguments must appear after other arguments, but the order of the pairs does not matter.

Before R2021a, use commas to separate each name and value, and encloseNamein quotes.

Example:'IndexStyle','subscript','IndexBase','0based'specifies the RE indexing form and base, respectively, of the output.

RE indexing form, specified as one of these values:

  • “指数”— The indices are in linear index form.

  • 'subscript'— The indices are in [subcarrier, symbol, antenna] subscript row form.

Data Types:char|string

RE indexing base, specified as one of these values:

  • '1based'— The index counting starts from 1.

  • '0based'— The index counting starts from 0.

Data Types:char|string

Indexing orientation of resource elements, specified as the comma-separated pair consisting of'IndexOrientation'and one of these values:

  • 'carrier'— Indices are referenced with respect to the carrier grid.

  • 'bwp'— Indices are referenced with respect to the bandwidth part.

Data Types:char|string

Output Arguments

全部折叠

PT-RS resource element indices, returned as one of these values.

  • Column vector — The function returns this type of value when'IndexStyle'is set to“指数”.

  • M-by-3 matrix — The function returns this type of value when'IndexStyle'is set to'subscript'. The matrix rows correspond to the [subcarrier, symbol, antenna] subscripts based on the number of subcarriers, OFDM symbols, and number of antennas, respectively.

Depending on the value of'IndexBase', the function returns either 1-based or 0-based indices. Depending on the value of'IndexOrientation', the function returns either carrier oriented indices or BWP oriented indices.

Data Types:uint32

References

[1]3GPP TS 38.211. “NR; Physical channels and modulation.”3rd Generation Partnership Project; Technical Specification Group Radio Access Network.

Extended Capabilities

Version History

Introduced in R2020a

See Also

Functions

Objects