Rohde&Schwarz R&S®WinIQSIM2™ Digital Standardss User Manual
R&S®SMW-K49
IEEE 802.16 WiMAX
User Manual
TM
(;ÙÑP2)
1175673202
Version 18
This document describes the following software options:
●
R&S®SMW-K49 IEEE 802.16 WiMAXTM (1413.3984.xx)
This manual describes firmware version FW 5.00.044.xx and later of the R&S®SMW200A.
© 2021 Rohde & Schwarz GmbH & Co. KG
Mühldorfstr. 15, 81671 München, Germany
Phone: +49 89 41 29 - 0
Email: info@rohde-schwarz.com
Internet: www.rohde-schwarz.com
Subject to change – Data without tolerance limits is not binding.
R&S® is a registered trademark of Rohde & Schwarz GmbH & Co. KG.
Trade names are trademarks of the owners.
"WiMAX", "Mobile WiMAX," "Fixed WiMAX," "WiMAX Forum," "WiMAX Certified," "WiMAX Forum Certified," “WiGRID,” the WiMAX
Forum logo, the WiMAX Forum Certified logo and the WiGRID logo are trademarks or registered trademarks of the WiMAX Forum.
All other trademarks are the properties of their respective owners.
1175.6732.02 | Version 18 | R&S®SMW-K49
The following abbreviations are used throughout this manual: R&S®SMW200A is abbreviated as R&S SMW, R&S®WinIQSIM2TM is
abbreviated as R&S WinIQSIM2; the license types 02/03/07/11/13/16/12 are abbreviated as xx.
R&S®SMW-K49
1 Welcome to the IEEE 802.16 WiMAX digital standard........................ 7
1.1 Accessing the IEEE 802.16 WiMAX dialog..................................................................7
1.2 What's new.....................................................................................................................8
1.3 Documentation overview..............................................................................................8
1.3.1 Getting started manual....................................................................................................8
1.3.2 User manuals and help................................................................................................... 8
1.3.3 Tutorials...........................................................................................................................8
1.3.4 Service manual............................................................................................................... 9
1.3.5 Instrument security procedures.......................................................................................9
1.3.6 Printed safety instructions............................................................................................... 9
1.3.7 Data sheets and brochures............................................................................................. 9
Contents
Contents
1.3.8 Release notes and open source acknowledgment (OSA).............................................. 9
1.3.9 Application notes, application cards, white papers, etc...................................................9
1.4 Scope........................................................................................................................... 10
1.5 Notes on screenshots.................................................................................................10
2 About the IEEE 802.16 WiMAX option................................................ 11
2.1 Required options.........................................................................................................11
2.2 WiMAX modulation system........................................................................................ 11
3 WiMAX configuration and settings.....................................................15
3.1 General settings for WiMAX signals..........................................................................15
3.2 Trigger settings........................................................................................................... 20
3.3 Marker settings............................................................................................................24
3.4 Clock settings..............................................................................................................26
3.5 Local and global connectors settings.......................................................................28
3.6 Frame configuration general settings.......................................................................28
3.7 Frame configuration OFDM........................................................................................30
3.7.1 Frame configuration common settings.......................................................................... 31
3.7.2 Burst table..................................................................................................................... 34
3.7.3 Frame burst graph OFDM............................................................................................. 38
3.7.4 Active carrier graph OFDM........................................................................................... 40
3.8 FCH configuration downlink OFDM...........................................................................40
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3.9 Generate UL-MAP uplink OFDM................................................................................ 43
3.10 DL-MAP configuration downlink OFDM.................................................................... 45
3.11 UL-MAP configuration downlink OFDM....................................................................47
3.12 More parameters uplink OFDM.................................................................................. 49
3.13 MAC header configuration OFDM..............................................................................50
3.14 Frame configuration OFDMA..................................................................................... 52
3.14.1 Frame configuration common settings.......................................................................... 53
3.14.2 Zone table..................................................................................................................... 56
3.14.3 Time plan.......................................................................................................................58
3.15 Zone configuration OFDMA........................................................................................59
3.15.1 OFDMA common zone settings.................................................................................... 59
3.15.2 Burst table..................................................................................................................... 64
3.15.3 Time plan OFDMA.........................................................................................................69
Contents
3.16 Sounding zone configuration OFDMA...................................................................... 69
3.16.1 OFDMA sounding zone settings................................................................................... 70
3.16.2 Sounding table.............................................................................................................. 73
3.17 CSTD OFDMA.............................................................................................................. 76
3.18 Data configuration OFDMA........................................................................................ 78
3.18.1 OFDMA data configuration settings.............................................................................. 79
3.18.2 PDU table......................................................................................................................83
3.19 FCH configuration downlink OFDMA........................................................................ 86
3.20 DL-MAP configuration downlink OFDMA..................................................................88
3.21 UL-MAP configuration downlink OFDMA..................................................................93
3.22 Generate UL-MAP uplink OFDMA..............................................................................98
3.23 Ranging uplink OFDMA............................................................................................ 100
3.24 HARQ configuration OFDMA....................................................................................102
3.24.1 OFDMA HARQ settings.............................................................................................. 103
3.24.2 HARQ sub-burst table................................................................................................. 105
3.25 Fast feedback configuration OFDMA...................................................................... 109
3.26 SUB-DL-UL-MAP configuration OFDMA..................................................................111
3.27 MAC header configuration OFDMA......................................................................... 113
3.28 PDU MAC configuration OFDMA..............................................................................116
3.29 Filter / clipping settings............................................................................................ 118
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3.29.1 Filter settings............................................................................................................... 119
3.29.2 Clipping settings..........................................................................................................122
3.29.3 Data dump...................................................................................................................123
4 Remote-control commands...............................................................125
4.1 General commands...................................................................................................126
4.2 Filter/clipping settings..............................................................................................132
4.3 Trigger settings......................................................................................................... 137
4.4 Marker settings..........................................................................................................142
4.5 Clock settings............................................................................................................144
4.6 OFDMA physical layer settings............................................................................... 145
4.7 OFDM physical layer settings.................................................................................. 207
Contents
List of commands.............................................................................. 227
Index....................................................................................................233
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Contents
6User Manual 1175.6732.02 ─ 18
R&S®SMW-K49
1 Welcome to the IEEE 802.16 WiMAX digital
Welcome to the IEEE 802.16 WiMAX digital standard
Accessing the IEEE 802.16 WiMAX dialog
standard
The R&S SMW-K49 is a firmware application that adds functionality to generate signals in accordance with the IEEE 802.16 standard WiMAX.
The R&S SMW-K49 key features
The R&S SMW simulates IEEE 802.16 WiMAX at the physical level. The IEEE 802.16
WiMAX signals are generated in the arbitrary waveform mode; the signal is first calculated and then output. The following list gives an overview of the main functions:
●
Support of IEEE 802.16TM-2004/Cor1/D5 and IEEE 802.16e-2005
●
Physical layer modes: OFDM, OFDMA, OFDMA/WiBro
●
Forward and reverse link, FDD and TDD duplexing
●
Burst types: FCH, DL-MAP, UL-MAP, DCD, UCD, HARQ; ranging, fast feedback,
data
●
Multiple zones and segments (PUSC, FUSC, AMC, sounding)
●
Diversity and MIMO coding (DL, UL)
This user manual contains a description of the functionality that the application provides, including remote control operation.
All functions not discussed in this manual are the same as in the base unit and are
described in the R&S SMW user manual. The latest version is available at:
www.rohde-schwarz.com/manual/SMW200A
Installation
You can find detailed installation instructions in the delivery of the option or in the
R&S SMW service manual.
1.1 Accessing the IEEE 802.16 WiMAX dialog
To open the dialog with IEEE 802.16 WiMAX settings
► In the block diagram of the R&S SMW, select "Baseband > IEEE 802.16 WiMAX".
A dialog box opens that display the provided general settings.
The signal generation is not started immediately. To start signal generation with the
default settings, select "State > On".
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1.2 What's new
1.3 Documentation overview
1.3.1 Getting started manual
Welcome to the IEEE 802.16 WiMAX digital standard
Documentation overview
This manual describes firmware version FW 5.00.044.xx and later of the
R&S®SMW200A.
Compared to the previous version there are editorial changes only.
This section provides an overview of the R&S SMW user documentation. Unless specified otherwise, you find the documents on the R&S SMW product page at:
www.rohde-schwarz.com/manual/smw200a
Introduces the R&S SMW and describes how to set up and start working with the product. Includes basic operations, typical measurement examples, and general information, e.g. safety instructions, etc. A printed version is delivered with the instrument.
1.3.2 User manuals and help
Separate manuals for the base unit and the software options are provided for download:
●
Base unit manual
Contains the description of all instrument modes and functions. It also provides an
introduction to remote control, a complete description of the remote control commands with programming examples, and information on maintenance, instrument
interfaces and error messages. Includes the contents of the getting started manual.
●
Software option manual
Contains the description of the specific functions of an option. Basic information on
operating the R&S SMW is not included.
The contents of the user manuals are available as help in the R&S SMW. The help
offers quick, context-sensitive access to the complete information for the base unit and
the software options.
All user manuals are also available for download or for immediate display on the Internet.
1.3.3 Tutorials
The R&S SMW provides interactive examples and demonstrations on operating the
instrument in form of tutorials. A set of tutorials is available directly on the instrument.
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1.3.4 Service manual
1.3.5 Instrument security procedures
1.3.6 Printed safety instructions
Welcome to the IEEE 802.16 WiMAX digital standard
Documentation overview
Describes the performance test for checking compliance with rated specifications, firmware update, troubleshooting, adjustments, installing options and maintenance.
The service manual is available for registered users on the global Rohde & Schwarz
information system (GLORIS):
https://gloris.rohde-schwarz.com
Deals with security issues when working with the R&S SMW in secure areas. It is available for download on the Internet.
Provides safety information in many languages. The printed document is delivered with
the product.
1.3.7 Data sheets and brochures
The data sheet contains the technical specifications of the R&S SMW. It also lists the
options and their order numbers and optional accessories.
The brochure provides an overview of the instrument and deals with the specific characteristics.
See www.rohde-schwarz.com/brochure-datasheet/smw200a
1.3.8 Release notes and open source acknowledgment (OSA)
The release notes list new features, improvements and known issues of the current
firmware version, and describe the firmware installation.
The open-source acknowledgment document provides verbatim license texts of the
used open source software.
See www.rohde-schwarz.com/firmware/smw200a
1.3.9 Application notes, application cards, white papers, etc.
These documents deal with special applications or background information on particular topics.
See www.rohde-schwarz.com/application/smw200a and www.rohde-schwarz.com/
manual/smw200a
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1.4 Scope
Welcome to the IEEE 802.16 WiMAX digital standard
Notes on screenshots
Tasks (in manual or remote operation) that are also performed in the base unit in the
same way are not described here.
In particular, it includes:
●
Managing settings and data lists, like saving and loading settings, creating and
accessing data lists, or accessing files in a particular directory.
●
Information on regular trigger, marker and clock signals and filter settings, if appropriate.
●
General instrument configuration, such as checking the system configuration, configuring networks and remote operation
●
Using the common status registers
For a description of such tasks, see the R&S SMW user manual.
1.5 Notes on screenshots
When describing the functions of the product, we use sample screenshots. These
screenshots are meant to illustrate as many as possible of the provided functions and
possible interdependencies between parameters. The shown values may not represent
realistic usage scenarios.
The screenshots usually show a fully equipped product, that is: with all options installed. Thus, some functions shown in the screenshots may not be available in your particular product configuration.
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2 About the IEEE 802.16 WiMAX option
2.1 Required options
About the IEEE 802.16 WiMAX option
WiMAX modulation system
This section lists required options and provides an overview of the supported features
in more details.
The basic equipment layout for generating WiMAX signals includes the:
●
Standard baseband generator (R&S SMW-B10)
●
Baseband main module (R&S SMW-B13)
●
Frequency option (e.g. R&S SMW-B1003)
●
Digital standard WiMAX IEEE 802.16 (R&S SMW-K49)
You can generate signals via play-back of waveform files at the signal generator. To
create the waveform file using R&S WinIQSIM2, you do not need a specific option.
To play back the waveform file at the signal generator, you have two options:
●
Install the R&S WinIQSIM2 option of the digital standard, e.g. R&S SMW-K255 for
playing LTE waveforms
●
If supported, install the real-time option of the digital standard, e.g. R&S SMW-K55
for playing LTE waveforms
For more information, see data sheet.
2.2 WiMAX modulation system
The option R&S SMW-K49 supports the following WiMAX modulation features:
●
Configuration of OFDM (orthogonal frequency division multiplexing) and OFDMA
(orthogonal frequency division multiple access) physical layer mode.
●
Downlink and Uplink mode.
●
Pre-defined settings for receiver tests.
●
All frame duration settings defined by the standard, including a "User" mode with
freely configurable frame duration, and a "continuous" mode. In "continuous" mode,
gaps between bursts/subframes are eliminated.
●
Sequence length of up to 511 frames.
●
Up to 64 bursts per frame/zone with independent power setting.
●
Channel bandwidth and sampling rate settings according to the ETSI, MMDS,
WCS, U-NII or WiBro bands, or alternatively arbitrary settings in "User" mode.
●
Full RS/CC, CC and CTC channel coding.
●
BPSK, QPSK, 16-QAM or 64-QAM modulation, independently configurable for any
of the 64 bursts.
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About the IEEE 802.16 WiMAX option
WiMAX modulation system
●
FCH, DL-MAP and UL-MAP burst generation in "automatic" mode (using userdefined signal configuration parameters) or in "user" mode, with arbitrary data.
●
Ranging bursts in uplink
●
Up to eight zones per frame in OFDMA mode
●
Predefined data sources such as PN9, PN11 and others, or arbitrary user data.
●
Optional generic MAC headers and CRC for each burst.
●
Subchannelization modes.
●
Clipping for reducing the crest factor.
Table 2-1: Parameters of the modulation system IEEE 802.16 WiMAX
Digital standard 802.16-2004 Meets IEEE 802.16™-2004/Cor2/D4 and
802.16e-2005
Physical layer modes OFDM, OFDMA, OFDMA – WiBro
Link direction forward link and reverse link
Frame durations 2, 2.5, 4, 5, 8, 10, 12.5, 20 ms, continuous, user-
definable
Sequence length 1 to 511 frames (depending on frame duration)
Clipping Vector or scalar clipping, applied before filtering
Marker modes Restart, frame start, frame active part, pulse, pat-
tern, on/off ratio
Parameters in OFDM mode
Duplexing TDD, FDD
Predefined frames Short, mid and long length test messages for testing
Level reference FCH/Burst or preamble level
Frequency bands ETSI, MMDS, WCS, U-NII, User
Channel bandwidth 1.25 MHz to 30 MHz, depending on selected fre-
Sampling rate 1.5 MHz to 32 MHz, depending on channel band-
Tg / Tb settings 1/4, 1/8, 1/16, 1/32
FFT size 256 (fixed)
Number of possible subchannels in subchannelization mode
receivers with all modulation types and RS-CC rates
quency band
width
1, 2, 4, 8, 16 (all)
Number of bursts per frame 0 – 64
Preamble / midamble modes Burst preamble / midambles off, burst preamble in
downlink, midamble repetition 5, 9 or 17 in uplink
Modulation & RS-CC rates BPSK ½, QPSK ½, QPSK ¾, 16-QAM ½, 16-QAM
¾, 64-QAM 2/3, 64-QAM ¾
Data all 0 , all 1, pattern (up to 64 bit), PN 9 to PN 23,
data lists
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About the IEEE 802.16 WiMAX option
WiMAX modulation system
Digital standard 802.16-2004 Meets IEEE 802.16™-2004/Cor2/D4 and
802.16e-2005
Burst power range -80 dB - +10 dB
MAC functions One generic MAC header + CRC available per burst
Parameters in OFDMA mode
Duplexing TDD
Level reference Subframe RMS power or preamble level (downlink
Frequency bands ETSI, MMDS, WCS, U-NII, WiBro, User
Channel bandwidth 1.25 MHz to 30 MHz, depending on selected fre-
Sampling rate 1.5 MHz to 32 MHz, depending on channel band-
Tg / Tb settings ¼, 1/8, 1/16, 1/32
FFT size 128, 512, 1024 or 2048
Subcarrier permutation PUSC, FUSC (downlink only), AMC 2x3, sounding
Number of bursts per frame 0 – 64
Modulation & CC rates QPSK ½, QPSK ¾, 16-QAM ½, 16-QAM ¾, 64-
Data all 0 , all 1, pattern (up to 64 bit), PN 9 to PN 23,
Burst power range -80 dB - +10 dB
only)
quency band
width
(uplink only)
QAM ½, 64-QAM 2/3, 64-QAM ¾, 64-QAM 5/6
data lists
MAC functions One generic MAC header + CRC available per burst
Parameters in OFDMA - WiBro mode
(identical to OFDMA)
Duplexing TDD
Level reference Subframe RMS power or preamble level (downlink
Frequency bands ETSI, MMDS, WCS, U-NII, WiBro, User
Channel bandwidth 1.25 MHz to 30 MHz, depending on selected fre-
Sampling rate 1.5 MHz to 32 MHz, depending on channel band-
Tg / Tb settings ¼, 1/8, 1/16, 1/32
FFT size 128, 512, 1024 or 2048
Subcarrier permutation PUSC, FUSC (downlink only), AMC 2x3, sounding
Number of bursts per frame 0 – 64
only)
quency band
width
(uplink only)
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About the IEEE 802.16 WiMAX option
WiMAX modulation system
Digital standard 802.16-2004 Meets IEEE 802.16™-2004/Cor2/D4 and
802.16e-2005
Modulation & CC rates QPSK ½, QPSK ¾, 16-QAM ½, 16-QAM ¾, 64-
QAM ½, 64-QAM 2/3, 64-QAM ¾, 64-QAM 5/6
Data all 0 , all 1, pattern (up to 64 bit), PN 9 to PN 23,
data lists
Burst power range -80 dB - +10 dB
MAC functions One generic MAC header + CRC available per burst
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3 WiMAX configuration and settings
WiMAX configuration and settings
General settings for WiMAX signals
Access:
► Select "Baseband > IEEE 802.16 WiMAX".
The remote commands required to define these settings are described in Chapter 4,
"Remote-control commands", on page 125.
● General settings for WiMAX signals........................................................................15
● Trigger settings....................................................................................................... 20
● Marker settings........................................................................................................24
● Clock settings..........................................................................................................26
● Local and global connectors settings......................................................................28
● Frame configuration general settings......................................................................28
● Frame configuration OFDM.....................................................................................30
● FCH configuration downlink OFDM.........................................................................40
● Generate UL-MAP uplink OFDM.............................................................................43
● DL-MAP configuration downlink OFDM.................................................................. 45
● UL-MAP configuration downlink OFDM.................................................................. 47
● More parameters uplink OFDM...............................................................................49
● MAC header configuration OFDM...........................................................................50
● Frame configuration OFDMA.................................................................................. 52
● Zone configuration OFDMA.................................................................................... 59
● Sounding zone configuration OFDMA.....................................................................69
● CSTD OFDMA........................................................................................................ 76
● Data configuration OFDMA.....................................................................................78
● FCH configuration downlink OFDMA...................................................................... 86
● DL-MAP configuration downlink OFDMA................................................................88
● UL-MAP configuration downlink OFDMA................................................................93
● Generate UL-MAP uplink OFDMA.......................................................................... 98
● Ranging uplink OFDMA........................................................................................ 100
● HARQ configuration OFDMA................................................................................ 102
● Fast feedback configuration OFDMA....................................................................109
● SUB-DL-UL-MAP configuration OFDMA............................................................... 111
● MAC header configuration OFDMA.......................................................................113
● PDU MAC configuration OFDMA.......................................................................... 116
● Filter / clipping settings..........................................................................................118
3.1 General settings for WiMAX signals
In this dialog, IEEE 802.16 WiMAX digital standard is enabled and reset and all the
settings for the signal in both transmission directions are made.
Access:
► Select "Baseband > IEEE 802.16 WiMAX > General".
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WiMAX configuration and settings
General settings for WiMAX signals
This tab contains the standard general settings, valid for the signal in both transmission directions.
Settings:
State..............................................................................................................................16
Set to Default................................................................................................................ 16
Save/Recall...................................................................................................................18
Generate Waveform File…............................................................................................18
Physical Layer Mode.....................................................................................................18
Version..........................................................................................................................19
Duplexing...................................................................................................................... 19
Link Direction................................................................................................................ 20
Filter / Clipping.............................................................................................................. 20
State
Activates the standard and deactivates all the other digital standards and digital modulation modes in the same path.
Remote command:
[:SOURce<hw>]:BB:WIMax:STATe on page 130
Set to Default
Calls the default settings. The values of the main parameters are listed in the following
table.
Parameter Value
General Settings
State Not affected by "Set to default"
Physical Layer Mode OFDM
Version 802.16-2004/Cor1-2005 and 802.16e-2005
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WiMAX configuration and settings
General settings for WiMAX signals
Parameter Value
Duplexing TDD
Link Direction Downlink
Frame Duration 10 ms
Sequence Length 1 frame
Predefined Frames User
Level Reference FCH/Burst
Clipping Off
OFDM mode
Frequency Band ETSI
Channel Bandwidth 1.75 MHz
Sampling Rate 2.00 MHz
BSID (4 LSBs) 0
Tg/Tb 1/4
Number of used subchannels 16 (all)
Frame Preamble Long
FCH Configuration On, "Auto" mode, F"rame Number Offset = 0" and
Nr. of Bursts 1
OFDMA mode
Frequency Band ETSI
Channel Bandwidth 1.75 MHz
Sampling Rate 2.00 MHz
n = 8/7
Tg/Tb 1/4
"Configuration Change Count = 0"
FFT Size 2048
Subcarrier Permutation PUSC
Subchannel 0 to 59 State On
OFDMA - WiBro mode
Frequency Band WiBro
Channel Bandwidth 8.75 MHz
Sampling Rate 10 MHz
n = 8/7
Tg/Tb 1/8
FFT Size 1024
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WiMAX configuration and settings
General settings for WiMAX signals
Parameter Value
Subcarrier Permutation PUSC
Subchannel 0 to 59 State On
Frame Duration 5 ms
Remote command:
[:SOURce<hw>]:BB:WIMax:PRESet on page 128
Save/Recall
Accesses the "Save/Recall" dialog, that is the standard instrument function for saving
and recalling the complete dialog-related settings in a file. The provided navigation
possibilities in the dialog are self-explanatory.
The settings are saved in a file with predefined extension. You can define the filename
and the directory, in that you want to save the file.
See also, chapter "File and Data Management" in the R&S SMW user manual.
Remote command:
[:SOURce<hw>]:BB:WIMax:SETTing:CATalog? on page 129
[:SOURce<hw>]:BB:WIMax:SETTing:LOAD on page 129
[:SOURce<hw>]:BB:WIMax:SETTing:STORe on page 130
[:SOURce<hw>]:BB:WIMax:SETTing:DELete on page 129
Generate Waveform File…
With enabled signal generation, triggers the instrument to save the current settings of
an arbitrary waveform signal in a waveform file with predefined extension *.wv. You
can define the filename and the directory, in that you want to save the file.
Using the ARB modulation source, you can play back waveform files and/or process
the file to generate multi-carrier or multi-segment signals.
Remote command:
[:SOURce<hw>]:BB:WIMax:WAVeform:CREate on page 131
Physical Layer Mode
Selects the physical layer mode.
The settings of the frame are provided in the subdialog "Frame Configuration" (see
Frame configuration OFDM ,Frame configuration OFDMA ) in accordance with the
selection.
"OFDM"
The OFDM mode supports signal generation according to IEEE
802.16-2004 section 8.3 with a fixed FFT size of 256.
"OFDMA"
Orthogonal Frequency Division Multiple Access (OFDMA) groups
multiple subcarriers of the OFDM into subchannels. A single client or
subscriber station can transmit using all of the subchannels within the
carrier space. Multiple clients can transmit with each using a portion
of the total number of subchannels simultaneously. OFDMA thus enables a more flexible use of resources. It can support nomadic and
mobile operation.
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R&S®SMW-K49
"OFDMA - WiBro"
The OFDMA – WiBro (Wireless Broadband) mode groups multiple
subcarriers of the OFDM into subchannels. A single client or subscriber station can transmit using all of the subchannels within the
carrier space. Multiple clients can transmit with each using a portion
of the total number of subchannels simultaneously. OFDMA thus enables a more flexible use of resources. It can support nomadic and
mobile operation.
The OFDMA – WiBro mode is identical to the OFDMA mode. When
selecting OFDMA – WiBro, these parameters are set to their WiBro
defaults (see Set to Default):
●
"Frame Duration = 5ms"
●
"Frequency Band = WiBro"
●
"Channel Bandwidth = 8.75 MHz"
●
"Sampling Rate = 10 MHz"
●
"Tg/Tb = 1/8"
●
"FFT Size = 1024"
Remote command:
[:SOURce<hw>]:BB:WIMax:MODE on page 128
WiMAX configuration and settings
General settings for WiMAX signals
Version
Selects the version of the standard to use.
"802.16 Rev2/D3"
Selecting "802.16 Rev2/D3" make sure that all signal parameters are
in line with the latest revision 2 version of the standard.
Using this mode is recommended.
"802.16-2004/Cor1-2005 and 802.16e-2005"
Selecting 802.16-2004/Cor1-2005 and 802.16e-2005 provides backward compatibility for devices that do not yet comply with the latest
release 2 version.
Remote command:
[:SOURce<hw>][:BB]:WIMax:SVERsion on page 131
Duplexing
Selects the duplexing. The duplexing mode determines how the uplink and downlink
signals are separated.
"TDD"
"FDD"
In TDD mode, the same frequency is used for both directions of
transmission (uplink and downlink). With one baseband, either downlink or uplink frames can be generated.
(OFDM only)
In FDD mode, different frequencies are used for downlink and uplink
directions. If only one link direction is considered at once, the IEEE
802.16 standard defines no differences between TDD and FDD signals on the physical layer.
The FDD mode has been provided for convenience, it completely fills
the defined frame with bursts to simulate a continuous transmission
environment. Use TDD mode instead if FDD devices are to be tested
with frames including transmission gaps.
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WiMAX configuration and settings
Trigger settings
Remote command:
[:SOURce<hw>]:BB:WIMax:DUPLexing on page 126
Link Direction
Selects the transmission direction.
"Downlink"
"Uplink"
Remote command:
[:SOURce<hw>]:BB:WIMax:LINK on page 128
Filter / Clipping...
Access to the dialog for setting baseband filtering, clipping and the sequence length of
the arbitrary waveform component, see Chapter 3.29, "Filter / clipping settings",
on page 118 .
The transmission direction selected is base station to subscriber station. The signal corresponds to that of a base station.
The transmission direction selected is subscriber station to base station. The signal corresponds to that of a subscriber station.
3.2 Trigger settings
This tab provides access to the settings necessary to select and configure the trigger,
like trigger source and mode, as well as to arm or trigger an internal trigger manually.
The current signal generation status is displayed in the header of the tab together with
information on the enabled trigger mode. As in the "Marker" and "Clock" tabs, this tab
provides also access to the settings of the related connectors.
This section focuses on the available settings.
For information on how these settings affect the signal, refer to section "Basics on ..."
in the R&S SMW user manual.
► To access this dialog, select "Baseband > IEEE 802.16 WiMAX > Trigger In".
This dialog comprises the settings required for configuring the trigger signal.
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WiMAX configuration and settings
Trigger settings
Routing and enabling a trigger
The provided trigger signals are not dedicated to a particular connector. Trigger signals
can be mapped to one or more USER x or T/M connectors.
Use the Local and global connectors settings to configure the signal mapping, the
polarity, the trigger threshold and the input impedance of the input connectors.
To route and enable a trigger signal, perform the following general steps:
●
Define the signal source and the effect of a trigger event.
Select the "Trigger In > Mode" and "Trigger In > Source".
●
Define the connector where the selected signal is provided.
Use the "Global Connectors" settings.
Trigger Settings Common to All Basebands
To enable simultaneous signal generation in all basebands, the R&S SMW couples the
trigger settings in the available basebands in any instrument's configuration involving
signal routing with signal addition. For example, in MIMO configuration, routing and
summing of basebands or of streams.
The icon
You can access and configure the common trigger source and trigger mode settings in
any of the basebands. An arm or a restart trigger event applies to all basebands, too.
You can still apply different delay to each of the triggers individually.
indicates that common trigger settings are applied.
Trigger Mode ← Trigger Settings Common to All Basebands
Selects trigger mode, i.e. determines the effect of a trigger event on the signal generation.
For more information, refer to chapter "Basics" in the R&S SMW user manual.
●
"Auto"
The signal is generated continuously.
●
"Retrigger"
The signal is generated continuously. A trigger event (internal or external) causes a
restart.
●
"Armed Auto"
The signal is generated only when a trigger event occurs. Then the signal is generated continuously.
An "Arm" stops the signal generation. A subsequent trigger event (internal or external) causes a restart.
●
"Armed Retrigger"
The signal is generated only when a trigger event occurs. Then the signal is generated continuously. Every subsequent trigger event causes a restart.
An "Arm" stops signal generation. A subsequent trigger event (internal or external)
causes a restart.
●
"Single"
The signal is generated only when a trigger event occurs. Then the signal is generated once to the length specified at "Signal Duration".
Every subsequent trigger event (internal or external) causes a restart.
Remote command:
[:SOURce<hw>]:BB:WIMax[:TRIGger]:SEQuence on page 141
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WiMAX configuration and settings
Trigger settings
Signal Duration Unit ← Trigger Settings Common to All Basebands
Defines the unit for describing the length of the signal sequence to be output in the
"Single" trigger mode.
Remote command:
[:SOURce<hw>]:BB:WIMax:TRIGger:SLUNit on page 140
Trigger Signal Duration ← Trigger Settings Common to All Basebands
Enters the length of the signal sequence to be output in the "Single" trigger mode.
Use this parameter to output part of the signal deliberately, an exact sequence of the
signal, or a defined number of repetitions of the signal.
Remote command:
[:SOURce<hw>]:BB:WIMax:TRIGger:SLENgth on page 139
Running/Stopped ← Trigger Settings Common to All Basebands
With enabled modulation, displays the status of signal generation for all trigger modes.
●
"Running"
The signal is generated; a trigger was (internally or externally) initiated in triggered
mode.
●
"Stopped"
The signal is not generated and the instrument waits for a trigger event.
Remote command:
[:SOURce<hw>]:BB:WIMax:TRIGger:RMODe? on page 139
Arm ← Trigger Settings Common to All Basebands
Stops the signal generation until subsequent trigger event occurs.
Remote command:
[:SOURce<hw>]:BB:WIMax:TRIGger:ARM:EXECute on page 138
Execute Trigger ← Trigger Settings Common to All Basebands
For internal trigger source, executes trigger manually.
Remote command:
[:SOURce<hw>]:BB:WIMax:TRIGger:EXECute on page 138
Trigger Source ← Trigger Settings Common to All Basebands
The following sources of the trigger signal are available:
●
"Internal"
The trigger event is executed manually by the "Execute Trigger".
●
"Internal (Baseband A/B)"
The trigger event is provided by the trigger signal from the other basebands.
If common trigger settings are applied, this trigger source is disabled.
●
"External Global Trigger"
The trigger event is the active edge of an external trigger signal provided and configured at the USER x connectors.
●
"External Local Trigger"
The trigger event is the active edge of an external trigger signal provided and configured at the local T/M/C connector.
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WiMAX configuration and settings
Trigger settings
With coupled trigger settings, the signal has to be provided at the T/M/C1/2/3 connectors.
●
"External Local Clock"
The trigger event is the active edge of an external local clock signal provided and
configured at the local T/M/C connector.
With coupled trigger settings, the signal has to be provided at the T/M/C1 connector.
Remote command:
[:SOURce<hw>]:BB:WIMax:TRIGger:SOURce on page 140
Sync. Output to External Trigger ← Trigger Settings Common to All Basebands
Enables signal output synchronous to the trigger event.
●
"On"
Corresponds to the default state of this parameter.
The signal calculation starts simultaneously with the trigger event. Because of the
processing time of the instrument, the first samples are cut off and no signal is output. After elapsing of the internal processing time, the output signal is synchronous
to the trigger event.
●
"Off"
The signal output begins after elapsing of the processing time. Signal output starts
with sample 0. The complete signal is output.
This mode is recommended for triggering of short signal sequences. Short sequences are sequences with signal duration comparable with the processing time of the
instrument.
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WiMAX configuration and settings
Marker settings
Remote command:
[:SOURce<hw>]:BB:WIMax:TRIGger:EXTernal:SYNChronize:OUTPut
on page 138
External Trigger Inhibit ← Trigger Settings Common to All Basebands
Applies for external trigger signal or trigger signal from the other path.
Sets the duration with that any following trigger event is suppressed. In "Retrigger"
mode, for example, a new trigger event does not cause a restart of the signal generation until the specified inhibit duration does not expire.
For more information, see chapter "Basics" in the R&S SMW user manual.
Remote command:
[:SOURce<hw>]:BB:WIMax:TRIGger[:EXTernal]:INHibit on page 141
[:SOURce<hw>]:BB:WIMax:TRIGger:OBASeband:INHibit on page 139
Trigger Delay
Delays the trigger event of the signal from:
●
The external trigger source
●
The other path
●
The other basebands (internal trigger), if common trigger settings are used.
Use this setting to:
●
Synchronize the instrument with the device under test (DUT) or other external devices
●
Postpone the signal generation start in the basebands compared to each other
For more information, see chapter "Basics on ..." in the R&S SMW user manual.
Remote command:
[:SOURce<hw>]:BB:WIMax:TRIGger[:EXTernal]:DELay on page 141
[:SOURce<hw>]:BB:WIMax:TRIGger:OBASeband:DELay on page 139
3.3 Marker settings
This tab provides access to the settings necessary to select and configure the marker
output signal, like the marker mode or marker delay settings.
This section focuses on the available settings.
For information on how these settings affect the signal, refer to section "Basics on ..."
in the R&S SMW user manual.
Access:
► Select "Baseband > IEEE 802.16 WiMAX > Marker".
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WiMAX configuration and settings
Marker settings
This dialog comprises the settings required for configuring the marker mode and
the marker delay.
Routing and enabling a marker
The provided marker signals are not dedicated to a particular connector. They can be
mapped to one or more USER x or T/M connectors.
To route and enable a marker signal, perform the following general steps:
●
Define the shape of the generated marker, i.e. select the "Marker > Mode".
●
Define the connector where the selected signal is provided.
Use the Local and global connectors settings.
Marker Mode
Marker configuration for up to 3 markers. The settings are used to select the marker
mode defining the shape and periodicity of the markers. The contents of the dialog
change with the selected marker mode.
"Restart"
"Frame"
"Frame Active
Part"
"Pulse"
Remote command:
[:SOURce<hw>]:BB:WIMax:TRIGger:OUTPut<ch>:PULSe:DIVider
on page 143
[:SOURce<hw>]:BB:WIMax:TRIGger:OUTPut<ch>:PULSe:FREQuency?
on page 144
"Pattern "
Remote command:
[:SOURce<hw>]:BB:WIMax:TRIGger:OUTPut<ch>:PATTern on page 143
A marker signal is generated at the start of each ARB sequence.
A marker signal is generated at the start of each frame.
The marker signal is high whenever a burst is active and low during
inactive signal parts.
(Such as the gaps between bursts in uplink mode or the uplink subframe in downlink TDD mode).
This marker can be used to decrease the carrier leakage during inactive signal parts by feeding it into the pulse modulator.
A regular marker signal is generated.
The marker signal defined as a bit pattern with a maximum length of
32 bits.
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WiMAX configuration and settings
Clock settings
"ON/OFF
Period"
A regular marker signal that is defined by an on/off ratio is generated.
A period lasts one on and off cycle.
Remote command:
[:SOURce<hw>]:BB:WIMax:TRIGger:OUTPut<ch>:ONTime on page 143
[:SOURce<hw>]:BB:WIMax:TRIGger:OUTPut<ch>:OFFTime on page 143
Remote command:
[:SOURce<hw>]:BB:WIMax:TRIGger:OUTPut<ch>:MODE on page 142
Rise/Fall Offset
Sets the value for the rise/fall offset.
The ramps of the marker signal are shifted by the specified number of samples. Posi-
tive values delay the rising ramp; negative values - shift it back.
1
= Positive rise offset
2 = Positive fall offset
Remote command:
[:SOURce<hw>]:BB:WIMax:TRIGger:OUTPut<ch>:ROFFset on page 143
[:SOURce<hw>]:BB:WIMax:TRIGger:OUTPut<ch>:FOFFset on page 143
Marker x Delay
Delays the marker signal at the marker output relative to the signal generation start.
Variation of the parameter "Marker x Delay" causes signal recalculation.
Remote command:
[:SOURce<hw>]:BB:WIMax:TRIGger:OUTPut<ch>:DELay on page 144
3.4 Clock settings
This tab provides access to the settings necessary to select and configure the clock
signal, like the clock source and clock mode.
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WiMAX configuration and settings
Clock settings
This section focuses on the available settings.
For information on how these settings affect the signal, refer to section "Basics on ..."
in the R&S SMW user manual.
► To access this dialog, select "Baseband > IEEE 802.16 WiMAX > Clock".
This dialog comprises the settings required for configuring the clock signal.
Defining the clock
The provided clock signals are not dedicated to a particular connector. They can be
mapped to one or more USER x and T/M/C connectors.
Use the Local and global connectors settings to configure the signal mapping, the
polarity, the trigger threshold, and the input impedance of the input connectors.
To route and enable a trigger signal, perform the following general steps:
●
Define the signal source, that is select the "Clock > Source".
●
Define the connector where the selected signal is provided.
Use the Local and global connectors settings.
Clock Source
Selects the clock source.
●
"Internal"
The instrument uses its internal clock reference.
●
"External Local Clock"
Option: R&S SMW-B10
The instrument expects an external clock reference at the local T/M/C connector.
Remote command:
[:SOURce<hw>]:BB:WIMax:CLOCk:SOURce on page 145
Clock Mode
Sets the type of externally supplied clock.
Remote command:
[:SOURce<hw>]:BB:WIMax:CLOCk:MODE on page 144
Measured External Clock
Provided for permanent monitoring of the enabled and externally supplied clock signal.
Remote command:
CLOCk:INPut:FREQuency?
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3.5 Local and global connectors settings
3.6 Frame configuration general settings
WiMAX configuration and settings
Frame configuration general settings
Each of the "Trigger In", "Marker" and "Clock" dialogs and the "Trigger Marker Clock"
dialog provides a quick access to the related connector settings.
See also chapter "Local and global connectors settings" in the user manual.
Access:
► Select "Baseband > IEEE 802.16 WiMAX > Frame Configuration".
This dialog contains the general parameters required for frame configuration.
Settings:
Frame Duration............................................................................................................. 28
User Frame Duration.....................................................................................................29
Downlink Subframe Duration........................................................................................ 29
Initial Delay of Burst 1................................................................................................... 29
Sequence Length..........................................................................................................29
Predefined Frames........................................................................................................29
Power Reference.......................................................................................................... 30
Frame Configuration..................................................................................................... 30
Frame Duration
Selects the frame duration.
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WiMAX configuration and settings
Frame configuration general settings
Only distinct values are allowed in the standard. For test reasons, continuous generation or generation for a freely selectable duration (User) are available. In continuous
mode, the frame duration equals the sum of the burst durations in OFDM mode or the
subframe duration in OFDMA mode.
Remote command:
[:SOURce<hw>]:BB:WIMax:FRAMe:TIME on page 127
User Frame Duration
(available for Frame Duration set to User)
Sets the frame duration for selection User. The values are freely selectable.
Remote command:
[:SOURce<hw>]:BB:WIMax:FRAMe:TIME:USER on page 128
Downlink Subframe Duration
(available for uplink direction in TDD mode)
Delays the first uplink burst by the set time duration.
Remote command:
[:SOURce<hw>]:BB:WIMax:SUBFrame:TIME on page 131
Initial Delay of Burst 1
(available for the uplink direction in FDD mode with physical layer mode OFDM)
Delays the first uplink burst by the set time duration.
In FDD mode, this parameter is provided for convenience to enable a constant delay of
the signal with respect to an internal or external frame trigger.
Remote command:
[:SOURce<hw>]:BB:WIMax:FRAMe:BURSt:DELay on page 127
Sequence Length
Sets the sequence length of the signal in number of frames. The signal is calculated in
advance and output in the arbitrary waveform generator. Burst data sources are continuously read over the whole sequence length.
Remote command:
[:SOURce<hw>]:BB:WIMax:SLENgth on page 130
Predefined Frames
Selects the frame type.
"Test Message BPSK 1/2 Short, Test Message BPSK 1/2 Mid,…(OFDM only)"
Predefined setups for receiver test messages according to IEEE
802.16-2004 section 8.3.11
"Downlink/Uplink 35MHz QPSK 1/2, Downlink/Uplink 35MHz QPSK 3/4,…(OFDMA/
OFDMA-WiBro only)"
Predefined setups for receiver test messages. The available predefined frames depend on the selected link direction.
"User"
The settings for the frame can be defined.
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WiMAX configuration and settings
Frame configuration OFDM
Remote command:
[:SOURce<hw>]:BB:WIMax:OFDM:FRAMe:PREDefined on page 222
[:SOURce<hw>]:BB:WIMax:AOFDm:FRAMe:PREDefined on page 150
Power Reference
Selects the power reference.
"FCH / Burst
(OFDM only)"
"Preamble (OFDM uplink and downlink OFDMA/OFDMA - WiBro downlink only)"
"Subframe RMS Power (OFDMA/OFDMA - WiBro only)"
"Subframe RMS Power w/o Preamble (OFDMA/OFDMA - WiBro only)"
Remote command:
[:SOURce<hw>]:BB:WIMax:OFDM:POWer:REFerence on page 223
[:SOURce<hw>]:BB:WIMax:AOFDm:POWer:REFerence on page 152
The instrument's level setting refers to the mean power of FCH
(Frame Control Header) or bursts with a burst power setting of 0 dB.
To obtain the absolute burst power value, the burst power value has
to be added to the level value.
The instrument's level setting refers to the preamble, which is
FCH / Burst power + 3dB in OFDM mode.
The instrument's level setting refers to the rms power of the subframe. This includes the preamble and all symbols with allocated carriers in downlink or the whole uplink subframe in uplink.
The instrument's level setting refers to the rms power of the subframe, excluding the preamble. This includes all symbols with allocated carriers in downlink or the whole uplink subframe in uplink.
Frame Configuration
Accesses the dialog for configuration of the frame.
The dialog depends on the selected physical layer mode, see Chapter 3.7, "Frame
configuration OFDM", on page 30 and Chapter 3.14, "Frame configuration OFDMA",
on page 52.
Remote command:
n.a.
3.7 Frame configuration OFDM
This dialog provides all parameters to configure frames in OFDM mode. The selected
link direction determines the available parameters.
Access:
1. Select "General > Physical Layer Mode > OFDM".
2. Select "Frame Configuration (OFDM) > Frame Configuration"
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