nrULCarrierConfig

5G uplink waveform configuration parameters

Since R2021a

Description

The nrULCarrierConfig object sets the parameters of a single-component-carrier 5G uplink waveform. Use this object to configure 5G uplink waveform generation when calling the nrWaveformGenerator function.

This object defines these aspects of the uplink waveform:

• Frequency range

• Channel bandwidth

• Cell identity

• Waveform duration

• Subcarrier spacing (SCS) carriers

• Bandwidth parts (BWPs)

• Physical uplink shared channel (PUSCH), PUSCH demodulation reference signal (DM-RS), and PUSCH phase-tracking reference signal (PT-RS)

• Physical uplink control channel (PUCCH) and associated DM-RS

• Sounding reference signal (SRS)

Creation

Syntax

cfgUL = nrULCarrierConfig

cfgUL = nrULCarrierConfig(Name,Value)

Description

cfgUL = nrULCarrierConfig creates a default single-component-carrier 5G uplink waveform configuration object.

cfgUL = nrULCarrierConfig(Name,Value) sets properties using one or more name-value arguments. Enclose each property name in quotes. For example, 'FrequencyRange','FR2' specifies an uplink waveform for frequency range 2 (FR2).

Properties

Label — Name of uplink carrier configuration

'Uplink carrier 1' (default) | character array | string scalar

Name of the uplink carrier configuration, specified as a character array or string scalar. Use this property to set a description to the uplink carrier configuration.

Data Types: char | string

FrequencyRange — Frequency range

'FR1' (default) | 'FR2'

Frequency range, specified as one of these values.

• 'FR1' — Frequency range 1 (FR1) that corresponds to frequencies from 410 MHz to 7.125 GHz.

• 'FR2' — Frequency range 2 (FR2) that corresponds to frequencies from 24.25 GHz to 52.6 GHz (FR2-1) and from 52.6 GHz to 71 GHz (FR2-2).

Data Types: char | string

ChannelBandwidth — Channel bandwidth

50 (default) | 5 | 10 | 15 | 20 | 25 | 30 | 35 | 40 | 45 | 50 | 60 | 70 | 80 | 90 | 100 | 200 | 400 | 800 | 1600 | 2000

Channel bandwidth, in MHz, specified as one of these values.

• 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 60, 70, 80, 90, or 100 for FR1

• 50, 100, 200, 400, 800, 1600, or 2000 for FR2

Set the frequency range with the FrequencyRange property.

Data Types: double

NCellID — Physical layer cell identity

1 (default) | integer from 0 to 1007

Physical layer cell identity, specified as an integer from 0 to 1007.

Data Types: double

NumSubframes — Waveform duration in subframes

10 (default) | positive integer

Waveform duration in subframes (multiples of 1 ms), specified as a positive integer. The default value of 10 subframes corresponds to one frame.

Data Types: double

InitialNSubframe — Initial subframe number

0 (default) | nonnegative integer

Since R2023b

Initial subframe number, specified as a nonnegative integer.

Data Types: double

WindowingPercent — Windowing percentage relative to FFT length

0 (default) | real scalar from 0 to 50 | five-element row vector | seven-element row vector | []

Windowing percentage relative to the fast Fourier transform (FFT) length, specified as one of these values.

• Real scalar from 0 to 50 — The object sets the same windowing percentage for all combinations of SCS and cyclic prefix.

• Five-element row vector of the form [w1 w2 w3 w4 w5 ], where each element is a real scalar from 0 to 50 — The object sets individual windowing percentage for the different SCS and cyclic prefix combinations.

  • w1 specifies the windowing percentage for 15 kHz SCS.

  • w2 specifies the windowing percentage for 30 kHz SCS.

  • w3 specifies the windowing percentage for 60 kHz SCS and normal cyclic prefix.

  • w4 specifies the windowing percentage for 60 kHz SCS and extended cyclic prefix.

  • w5 specifies the windowing percentage for 120 kHz, 480 kHz, or 960 kHz SCS.

• Seven-element row vector of the form [w1 w2 w3 w4 w5 w6 w7], where each element is a real scalar from 0 to 50 — The object sets individual windowing percentage for the different SCS and cyclic prefix combinations.

  • w1 specifies the windowing percentage for 15 kHz SCS.

  • w2 specifies the windowing percentage for 30 kHz SCS.

  • w3 specifies the windowing percentage for 60 kHz SCS and normal cyclic prefix.

  • w4 specifies the windowing percentage for 60 kHz SCS and extended cyclic prefix.

  • w5 specifies the windowing percentage for 120 kHz SCS.

  • w6 specifies the windowing percentage for 480 kHz SCS.

  • w7 specifies the windowing percentage for 960 kHz SCS.

• [] — The object automatically selects the windowing percentage of each SCS carrier (specified by SCSCarriers) based on the SampleRate property and these additional properties.

  • The NSizeGrid and SubcarrierSpacing properties of the actual SCS carrier.

  • The CyclicPrefix property of the actual BWP specified by the BandwidthParts property.

  For more information, see the 'Windowing' name-value argument description of the nrOFDMModulate function.

This property configures the number of time-domain samples, as a percentage of the FFT length, over which windowing and overlapping of the OFDM symbols take place.

Data Types: double

SampleRate — Sample rate of OFDM-modulated waveform

[] (default) | positive integer scalar

Sample rate of the OFDM-modulated waveform, specified as [] or a positive integer scalar. When you set this value to [], the object sets the sample rate to the minimum value that accommodates all carriers in the waveform without aliasing.

CarrierFrequency — Carrier frequency in Hz

0 (default) | real number

Carrier frequency in Hz, specified as a real number. This property corresponds to f₀, defined in TS 38.211 Section 5.4, and is used for symbol phase compensation before OFDM modulation.

Data Types: double

SCSCarriers — One or more SCS carrier configurations

{nrSCSCarrierConfig} (default) | cell array of nrSCSCarrierConfig objects

One or more SCS carrier configurations, specified as a cell array of nrSCSCarrierConfig objects. Because this property configures the subcarrier spacing and grid size of each numerology, each nrSCSCarrierConfig object in the cell array must have a unique SubcarrierSpacing property value.

BandwidthParts — One or more BWP configurations

{nrWavegenBWPConfig} (default) | cell array of nrWavegenBWPConfig objects

One or more BWP configurations, specified as a cell array of nrWavegenBWPConfig objects. The SubcarrierSpacing properties of these BWP objects must be one of the values defined by the SubcarrierSpacing properties of the carriers specified by the SCSCarriers property.

IntraCellGuardBands — Intracell guard bands

{nrIntraCellGuardBandsConfig} (default) | cell array of nrIntraCellGuardBandsConfig objects

Since R2023b

Intracell guard bands for operation with shared spectrum channel access for FR1, specified as a cell array of nrIntraCellGuardBandsConfig objects. The default nrIntraCellGuardBandsConfig object does not configure intracell guard bands. Therefore, the default value of this property, {nrIntraCellGuardBandsConfig}, specifies that all resource blocks of all SCS carriers are available.

PUSCH — One or more PUSCH configurations

{nrWavegenPUSCHConfig} (default) | cell array of nrWavegenPUSCHConfig objects

One or more PUSCH configurations, specified as a cell array of nrWavegenPUSCHConfig objects. Use this property to configure different PUSCH and associated DM-RS and PT-RS.

PUCCH — One or more PUCCH configurations

{nrWavegenPUCCH0Config('Enable',0)} (default) | cell array of nrWavegenPUCCH0Config , nrWavegenPUCCH1Config, nrWavegenPUCCH2Config, nrWavegenPUCCH3Config, and nrWavegenPUCCH4Config objects

One or more PUCCH configurations, specified as a cell array of any combination of nrWavegenPUCCH0Config, nrWavegenPUCCH1Config, nrWavegenPUCCH2Config, nrWavegenPUCCH3Config, and nrWavegenPUCCH4Config objects. This property configures different PUCCH and associated DM-RS. By default, the PUCCH is disabled in the uplink configuration.

SRS — One or more SRS configurations

{nrWavegenSRSConfig('Enable',0)} (default) | cell array of nrWavegenSRSConfig objects

One or more SRS configurations, specified as a cell array of nrWavegenSRSConfig objects. Use this property to configure different SRS. By default, the SRS is disabled in the uplink configuration.

Object Functions

openInGenerator

Open 5G waveform configuration in 5G Waveform Generator app

Examples

Configure and Generate Single-User 5G Uplink Waveform

Create an SCS carrier configuration object with the default SCS of 15 kHz and 100 resource blocks.

carrier = nrSCSCarrierConfig('NSizeGrid',100);

Create a customized BWP configuration object for the SCS carrier.

bwp = nrWavegenBWPConfig('NStartBWP',carrier.NStartGrid+10);

Create a single-user 5G uplink waveform configuration object, specifying the previously defined configurations. In the uplink configuration object, by default, the PUSCH is enabled, while the PUCCH and the SRS are disabled.

cfgUL = nrULCarrierConfig( ...
    'FrequencyRange','FR1', ...
    'ChannelBandwidth',40, ...
    'NumSubframes',20, ...
    'SCSCarriers',{carrier}, ...
    'BandwidthParts',{bwp});

Generate a 5G uplink waveform using the specified configuration.

waveform = nrWaveformGenerator(cfgUL);

Configure and Generate Multiuser 5G Uplink Waveform

Create two SCS carrier configuration objects with mixed numerologies and custom numbers of resource blocks.

carriers = {
    nrSCSCarrierConfig('SubcarrierSpacing',15,'NStartGrid',10,'NSizeGrid',100), ...
    nrSCSCarrierConfig('SubcarrierSpacing',30,'NStartGrid',0,'NSizeGrid',70)};

Create two custom BWP configuration objects, one for each of the carriers.

bwp = {
    nrWavegenBWPConfig('BandwidthPartID',0,'SubcarrierSpacing',15,'NStartBWP',30,'NSizeBWP',80), ...
    nrWavegenBWPConfig('BandwidthPartID',1,'SubcarrierSpacing',30,'NStartBWP',0,'NSizeBWP',60)};

Create two PUSCH configuration objects, one for each of the carriers, with mixed modulation schemes.

pusch = {
    nrWavegenPUSCHConfig('BandwidthPartID',0,'Modulation','16QAM','SlotAllocation',0:2:9,'PRBSet',0:19,'RNTI',1,'NID',1), ...
    nrWavegenPUSCHConfig('BandwidthPartID',1,'Modulation','QPSK','RNTI',2,'NID',2,'PRBSet',50:59)};

Create a single PUCCH configuration object, only for the second carrier. By default, the PUCCH is enabled in this configuration.

pucch = {nrWavegenPUCCH0Config('BandwidthPartID',1,'SlotAllocation',0:9,'PRBSet',2,'DataSourceUCI', 'PN9')};

Create two SRS configuration objects, one for each of the carriers. By default, the SRS is enabled in both configurations.

srs = {
    nrWavegenSRSConfig('BandwidthPartID',0,'SlotAllocation',1:2:9,'NumSRSPorts',2), ... 
    nrWavegenSRSConfig('BandwidthPartID',1,'FrequencyStart',4)};

Create a multiuser 5G uplink waveform configuration object, specifying the previously defined configurations.

cfgUL = nrULCarrierConfig( ...
    'FrequencyRange','FR1', ...
    'ChannelBandwidth',40, ...
    'NumSubframes',20, ...
    'SCSCarriers',carriers, ...
    'BandwidthParts',bwp, ...
    'PUSCH',pusch, ...
    'PUCCH',pucch, ...
    'SRS',srs);

Generate a 5G uplink waveform using the specified configuration.

waveform = nrWaveformGenerator(cfgUL);

Extended Capabilities

C/C++ Code Generation
Generate C and C++ code using MATLAB® Coder™.

Version History

Introduced in R2021a

R2023b: Specify initial subframe number

You can use the InitialNSubframe property to specify the initial subframe number in the waveform.

R2023b: Configure intracell guard bands

Use the IntraCellGuardBands object property to specify intracell guard bands for uplink transmissions.

R2023b: Open uplink waveform configuration parameters in app

Use the openInGenerator object function to open your uplink waveform configuration parameters in the 5G Waveform Generator app. You can then visualize, edit, and generate your waveform in the app.

R2023a: Release 17 support for FR1 and FR2-2

The ChannelBandwidth object property supports 35 MHz and 45 MHz for FR1 and 800 MHz, 1600 MHz, and 2000 MHz for FR2-2.

The WindowingPercent object property supports 480 kHz and 960 kHz subcarrier spacings.