Tektronix OFDM Waveform Primary User

OFDM

ZZZ

Plug-in Application

Printable Help

*P077134801*

077-1348-01

OFDM Plug-in Application

ZZZ

Printable Help

w.tek.com

077-1348-01

Copyright © Tektronix. All rights reserved. Licensed software products are owned by Tektronix or its subsidiaries or suppliers, and are protected by national copyright laws and international treaty provisions.

Tektronix products are covered by U.S. and foreign patents, issued and pending. Information in this publication supersedes that in all previously published m aterial. Speciﬁcations and price change privileges reserved.

TEKTRONIX and TEK are registered trademarks of Tektronix, Inc.

SourceXpress

is a registered trademark of Tektronix, Inc.

Microsoft and Windows are registered trademarks of Microsoft Corporation.

Supports OFDM Plug-in application Version 3.1.x and above.

Help part number: 076–0409–01

PDF of Help system part number: 077–1348–01

Contacting Tektronix

Tektronix, Inc. 14150 SW Karl Braun Drive P. O . B o x 50 0

rton, OR 97077

Beave USA

For product information, sales, service, and technical support:

In North America, call 1-800-833-9200. Worldwide, visit ww w.tek.com to ﬁnd contacts in your area.

Table of Contents

Introduction

Welcome............................................................................................................. 1

Key features ......................................................................................................... 1

Documentation......................................... ................................ ............................. 2

Support information....... .................................. ................................ ....................... 3

Orientation

Elements of the display ............................................................................................ 5

Signal format selection............................................................................................. 5

Plug-in selection ....................................... ................................ ............................. 6

Compile button..................... ................................ ................................ ................. 6

Compile settings .................................................................................................... 7

Reset Plug-in button....... ................................ ................................ ........................ 11

Presets button ...................................................................................................... 11

Help button............... .................................. ................................ ........................ 11

Table of Contents

Basic setup

Basic setup ......................................................................................................... 13

Frames tab

Frame settings...................................... ................................ ................................ 15

Preamble tab

Preamble tab................................................................................................... 16

Header tab

Header tab ... .................................. ................................ ................................ 17

Payload tab

Payload tab .......................... .................................. ................................ ........ 17

Multipath tab

Multipath tab . . ................ .. . . . . . . . . . . . . . . . . . . . . . . . . ................ . . . . . . . . . . . . . . . . . . . . . . . . .............. 18

Gated Noise tab

Gated Noise tab ................... ................................ .................................. .......... 19

Hopping tab

Hopping tab ................................................................................................... 19

hase Noise tab

Phase Noise tab ..................... ................................ .................................. ........ 20

Symbols tab

Symbols tab .. .................................. ................................ ................................ .... 23

OFDM Plug-in Application Printable Help i

Table of Contents

Subcarriers for symbols

Subcarriers for symbols ...................................................................................... 24

Deﬁning the Pa

PRBS Editor ............................... ................................ .................................. .. 27

Modulation types available .................................................................................. 27

Deﬁning subcarrier positions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .......................... 28

Amplitude Phase Proﬁle

Amplitude Phase Proﬁle ..................................................................................... 29

S-Parameter tab

S-Parameter license ............................................................................................... 31

S-Parameter ........................................................................................................ 31

S-Parameter ﬁle descriptions .................. ................................ .............................. 35

Aggressor signals ............................................................................................. 37

Licensing

Licensing ........................................................................................................... 39

ttern .......................................................................................... 26

Index

ii OFDM Plug-in Application Printable Help

Introduction Welcom e

Welcome

The Orthogonal Frequency Division Multiplexing (OFDM) plug-in is a waveform creation application used to create a number of closely spaced modulated carriers. With this application, you can custom build OFDM frames b

ydeﬁning symbols and the parameters within symbols.

The OFDM plug-in is designed to integrate and operate seamlessly as an enhancement t products:

SourceXpress waveform creation software

AWG70000 series arbitrary waveform generators

AWG5200 series arbitrary waveform generators

Once installed, the plug-in becomes available as ano

This illustration shows the OFDM plug-in viewed from the SourceXpress application. The plug-in interface is identical whether it is used from SourceXpress or installed on a generator.

ther waveform plug-in application.

o the following

Key features

Conﬁgure all parameters of OFDM

Custom build OFDM frames right from deﬁning the base data, symbols, and frames

Add Impairments, Phase Noise, and Multi-path

OFDM Plug-in Application Printable Help 1

Introduction Documentation

Deﬁne frequency hopping and gated noise

Support for a variety of sub-carrier modulation (BPSK, QPSK, 8-PSK, and QAM (8, 16, 32, 64,

128, 256, 512, 1024)

Documentation

In addition to this application Help system, the following documentation is available for the software.

All documentation is available on the Tektronix Web site (www.tek.com/manual/downloads

To read about Use these documents

OFDM plug

OFDM plu

SourceXpress operation and user interface help Access the SourceXpress application help from the Help menu for

Sourc

Connected instrument operation and user

erface help (such as an AWG70000 series

int generator)

-in operation and user interface help

g-in programmer commands

eXpress programmer commands

Access th information on all controls and elements on screen.

The OFDM plug-in help system is also available in PDF format located in the progr site.

Access t speciﬁc to the plug-in.

This is available on the Tektronix web site.

information on all controls and elements on screen.

The So on the Tektronix web site.

Acces commands.

This document is available in PDF format located in the program’s inst

For operation and interface help of a connected instrument, refer to the ins

This is available with the instrument or on the Tektronix web site.

e plug-in application help from the plug-in Help menu for

am’s installation folder and also available on the Tektronix web

he plug-in programmer manual for the syntax of remote commands

urceXpress help system is also available in P DF format, available

s the SourceXpress programmer manual for the syntax of remote

allation folder and also available on the Tektronix web site.

trument’s documentation.

nected instrument programmer commands

Con (such as an AWG70000 series generator)

xxx

programming information of a connected instrument, refer to the

For instrument’s documentation. This is available with the instrument or on the Tektronix web site.

2 OFDM Plug-in Application Printable Help

Introduction Support information

Support information

Tektronix offers the following services in support of their products:

Technical Support. For application-related questions about a Tektronix product, contact us by

telephone or email ).

Service Support. For service-related questions about a Tektronix product, contact us by telephone

or email ).

Tektronix also offers extended warranty and calibration programs as options on many products. Contact your local Tektronix distributor or sales ofﬁce.

OFDM Plug-in Application Printable Help 3

Introduction Support information

4 OFDM Plug-in Application Printable Help

Orientation Elements of the display

Elements of the display

The main areas of the application window are shown in the following ﬁgure.

Signal format selection

The Signal Format selection lets you choose the carrier type, either for RF signals (RF/IF) or baseband signals (IQ).

See the Basic setup

OFDM Plug-in Application Printable Help 5

(see page 13) section for additional details.

Orientation Plug-in selection

Plug-in selection

Use the Plug-in pull-down menu to select the OFDM signal modulation plug-in application. The plug-in pull-down menu varies depending on the installed applications.

NOTE. The OFD

Refer to Licensing

Compile button

Use the Compile button to create the waveforms and place the waveforms into the Waveforms list of the host generator.

Use the Compile settings

M signal modulation plug-in requires a license to create waveforms.

(see page 39).

(see page 7) button to edit the compilation settings.

6 OFDM Plug-in Application Printable Help

Orientation Compile settings

Compile settings

Item Description

Name

write existing

Over waveform/sequence

The application provides a base name for compiled waveforms. You can edit the ﬁeld

name of your choice. T he waveform is added to the Waveforms list. If the name

with a already exists, the name is incremented with a numerical value (unless the overwrite option is selected).

eset Plug-in button resets the Name ﬁeld to the default name.

The R

ecked, a waveform/sequence with the same name (in the waveforms or sequence list)

If c h is overwritten with no warnings.

OFDM Plug-in Application Printable Help 7

Orientation Compile settings

Item Description

Compile for Signal Format = RF/IF

Choose the cha also used to deﬁne the amplitude ranges.

The available channels is dependent on the generator model.

Signal Forma

When compiling IQ signals, you are presented with two channel selections.

The ﬁrst channel selection is Q, the second selection is I.

If the generator has IQ modulator capabilities (digital up converter) and the IQ m odulator is enabled, a single channel selection is presented and complex IQ waveform is created.

nnel to associate with the compiled waveform. The selected channel is

t=IQ

Use Internal IQ Modulator If checked, a complex IQ Waveform is created which can be used with the internal

IQ modulator. Sampling Rate and interpolation rates will be calculated based on the Baseband parameters.

This setting is not shown if the generator does not have an internal IQ modulator.

Compile only The compiled waveforms are simply entered into the Waveforms list and Sequences list.

Compile and assign The compiled waveforms are entered into the Waveforms list and automatically assigned

to a selected channel.

Play after assign If checked, the waveform starts to play out immediately after compiling.

The instrument’s sample rate and amplitude will change based on the compiled waveform’s properties.

Create sequence If checked, a sequence with waveforms will be created after compilation.

Sampling Rate

Auto Calculate This is the default method to set the sampling rate. T he application creates a sampling

rate based on the settings chosen for the waveform.

Manual

Oversampling Select to increase the apparent sampling rate.

Select to enter a speciﬁc sampling rate.

The Sampling Rate is calculated by multiplying Oversampling with the maximum frequency of the signal to be generated.

8 OFDM Plug-in Application Printable Help

Orientation Compile settings

Item Description

Apply Corrections File Check the box to apply a correction ﬁle directly to the waveform when compiling.

n ﬁle dialog changes depending on the Signal Format, RF/IF or IQ.

l format set to RF/IF, the correction ﬁle dialog lets you select a single

RF/IF Signal F

ormat

The correctio

With the signa correction ﬁle to apply.

Use the browse folder icon to navigate to a saved correction ﬁle.

Onceavalidﬁle path is entered, the Correction Settings icon

is enabled. Select to

display the Frequency Response screen.

IQ Signal Format With the signal format set to IQ, the correction ﬁle dialog allows you to apply a correction

ﬁle to the IQ waveform or to the individual I and Q components of the waveform.

When applying an IQ correction ﬁle, the correction ﬁle dialog lets you select a single correction ﬁle to apply.

When applying an I and Q correction ﬁles, the correction ﬁle dialog lets you select individual correction ﬁles to apply.

Use the browse folder icon to navigate to a saved correction ﬁle.

Onceavalidﬁle path is entered, the Correction Settings icon

is enabled. Select to

display the Frequency Response screen.

Compile Compiles the waveform.

xxx

Correction ﬁle frequency response

If applying an RF correction ﬁle, the Frequency Response screen shows plot information and provides Advanced options to apply a Gaussian ﬁlter and remove Sin(x)/x distortions.

OFDM Plug-in Application Printable Help 9

+ 32 hidden pages

Tektronix OFDM Waveform Primary User

Specifications and Main Features

Frequently Asked Questions

User Manual