This is machine translation

Translated by Microsoft
Mouseover text to see original. Click the button below to return to the English version of the page.

Note: This page has been translated by MathWorks. Click here to see
To view all translated materials including this page, select Country from the country navigator on the bottom of this page.

Generate LTE Test Model Waveforms

LTE Test Model Generator Overview

You can use the LTE Test Model Generator app to generate E-UTRA Test Model (E-TM) waveforms.

Open the LTE Test Model Generator App

To open the LTE Test Model Generator app, select the APPS tab on the MATLAB desktop and click the following icon.

Alternatively, the LTE Test Model Generator app can be launched from the MATLAB® command window.

Open LTE Downlink E-TM Generator App from Command Line

The LTE Downlink E-TM Generator dialog box appears when you execute the lteTestModelTool function with no input arguments.

lteTestModelTool

Dialog Box Inputs and Outputs

Parameters

In the LTE Downlink E-TM Generator dialog box, you can set the following parameters.

Parameter (Equivalent Field)ValuesDescription
Test model (TMN)

'1.1', '1.2', '2', '2a', '3.1', '3.1a', '3.2', '3.3'

Test model number, as specified in TS 36.141, identifying the test model to use when generating the waveform

Bandwidth (BW)

'1.4MHz', '3MHz', '5MHz', '10MHz', '15MHz', '20MHz', '9RB', '11RB', '27RB', '45RB', '64RB', '91RB',

Channel bandwidth to use when generating test model waveforms

Cell identity (NCellID)

Integer from 0 to 503

Physical layer cell identity

Duplex mode (DuplexMode)

'FDD' (default), 'TDD'

Duplexing mode, specified as:

  • 'FDD' for Frequency Division Duplex or

  • 'TDD' for Time Division Duplex

Number of subframes (TotSubframes)

Nonnegative scalar integer

Total number of subframes to generate

Windowing (samples) (Windowing)

Nonnegative scalar integer

Number of time-domain samples over which windowing and overlapping of OFDM symbols is applied

Waveform output variable

Variable name, beginning with an alphabetical character and containing alphanumeric characters

Waveform output variable name. When you click Generate waveform, a new variable with this name is created in the MATLAB workspace.

Resource grid output variable

Variable name, beginning with an alphabetical character and containing alphanumeric characters

Resource grid output variable name. When you click Generate waveform, a new variable with this name is created in the MATLAB workspace.

E-TM configuration output variable

Variable name, beginning with an alphabetical character and containing alphanumeric characters

E-TM configuration output parameter structure name. When you click Generate waveform, a new variable with this name is created in the MATLAB workspace.

Examples

Generate E-TM 3.2 Waveform

This example shows how to generate a time-domain signal, waveform, and a 3-D array of the resource elements, grid, for the E-TM 3.2, as specified in TS 36.141.

Open the LTE Test Model Generator app. Select the APPS tab on the MATLAB desktop and click the following icon.

The LTE Downlink E-TM Generator dialog box opens.

From the Test model drop-down list, choose 3.2.

From the Bandwidth drop-down list, choose 15MHz.

For Waveform output variable, enter waveform.

For Resource grid output variable, enter grid.

For E-TM configuration output variable, enter tmCfg. The dialog box now appears as shown in the following figure.

Click the Generate waveform button. The variables waveform, grid, and tmCfg now appear in the MATLAB Workspace Browser.

References

[1] 3GPP TS 36.141. “Base Station (BS) conformance testing.” 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA). URL: http://www.3gpp.org.

See Also

| | | |

Related Topics