R&S®SMM-K54/-K86/-K142/-K147
IEEE 802.11a/b/g/n, IEEE 802.11ac,
IEEE 802.11ax, IEEE 802.11be
User Manual
(;ÝCY2)
1179194102
Version 05
This document describes the following software options:
●
R&S®SMM-K54 IEEE 802.11a/b/g/n/j/p (1441.1930.xx)
●
R&S®SMM-K86 IEEE 802.11ac (1441.1860.xx)
●
R&S®SMM-K142 IEEE 802.11ax (1441.1753.xx)
●
R&S®SMM-K147 IEEE 802.11be (1441.1053.xx)
This manual describes firmware version FW 5.00.166.xx and later of the R&S®SMM100A.
© 2022 Rohde & Schwarz GmbH & Co. KG
Muehldorfstr. 15, 81671 Muenchen, 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.
1179.1941.02 | Version 05 | R&S®SMM-K54/-K86/-K142/-K147
The following abbreviations are used throughout this manual: R&S®SMM100A is abbreviated as R&S SMM, 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®SMM-K54/-K86/-K142/-K147
Contents
1 Welcome to the IEEE 802.11 WLAN digital standard.......................... 7
1.1 Key features...................................................................................................................7
1.2 Accessing the IEEE 802.11 WLAN dialog................................................................... 8
1.3 What's new.....................................................................................................................8
1.4 Documentation overview..............................................................................................9
1.4.1 Getting started manual....................................................................................................9
1.4.2 User manuals and help................................................................................................... 9
1.4.3 Service manual............................................................................................................... 9
1.4.4 Instrument security procedures.....................................................................................10
1.4.5 Printed safety instructions............................................................................................. 10
1.4.6 Data sheets and brochures........................................................................................... 10
Contents
1.4.7 Release notes and open source acknowledgment (OSA)............................................ 10
1.4.8 Application notes, application cards, white papers, etc.................................................10
1.5 Scope............................................................................................................................11
1.6 Notes on screenshots.................................................................................................11
2 About the IEEE 802.11 WLAN options................................................12
2.1 Required options.........................................................................................................12
2.2 About IEEE 802.11 WLAN technology.......................................................................12
2.3 Operation modes.........................................................................................................14
2.4 Signal generation........................................................................................................ 16
3 WLAN configuration and settings...................................................... 17
3.1 General settings.......................................................................................................... 17
3.2 Transmit antenna setup..............................................................................................21
3.3 Frame block configuration......................................................................................... 23
3.4 PPDU configuration.................................................................................................... 30
3.4.1 General settings............................................................................................................ 30
3.4.2 HE settings....................................................................................................................36
3.4.3 EHT settings..................................................................................................................43
3.4.4 User configuration settings............................................................................................49
3.4.5 Data settings................................................................................................................. 54
3.5 A-MPDU settings......................................................................................................... 60
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3.6 MAC header and FCS configuration for frame block...............................................62
3.6.1 MAC header and FCS...................................................................................................62
3.6.2 802.11 MAC frame field.................................................................................................63
3.6.3 Beacon settings.............................................................................................................67
3.6.4 Trigger frame settings................................................................................................... 74
3.7 MAC header HT/HE and VHT configuration..............................................................81
3.7.1 Common settings.......................................................................................................... 83
3.7.2 MAC HT configuration...................................................................................................83
3.7.3 MAC VHT configuration................................................................................................ 86
3.7.4 MAC HE control field settings....................................................................................... 90
3.8 Spatial mapping.......................................................................................................... 91
4 Signal control and signal characteristics..........................................95
Contents
4.1 Filter/clipping settings................................................................................................95
4.1.1 Filter settings.................................................................................................................95
4.1.2 Clipping settings............................................................................................................98
4.2 Trigger settings........................................................................................................... 99
4.3 Marker settings..........................................................................................................103
4.4 Clock settings............................................................................................................106
4.5 Local and global connectors settings.....................................................................107
5 How to work with the IEEE 802.11 WLAN option............................ 108
5.1 Generating a realistic MxN MIMO WLAN 802.11n/ac/p signal for receiver test
under static conditions.............................................................................................108
6 Remote-control commands...............................................................111
6.1 Programming examples............................................................................................112
6.1.1 Trigger settings............................................................................................................112
6.1.2 Marker settings............................................................................................................114
6.1.3 Clock settings.............................................................................................................. 114
6.2 General commands................................................................................................... 114
6.3 Filter/clipping settings.............................................................................................. 117
6.4 Trigger settings......................................................................................................... 124
6.5 Marker settings..........................................................................................................128
6.6 Clock settings............................................................................................................132
6.7 Antenna configuration settings............................................................................... 133
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6.8 Frame block configuration....................................................................................... 136
6.9 Frame configuration settings...................................................................................142
6.9.1 Frame block PPDU configuration................................................................................142
6.9.2 EHT/HE configuration................................................................................................. 158
6.9.3 User configuration....................................................................................................... 166
6.9.4 MPDU configuration.................................................................................................... 170
6.9.5 MAC header configuration.......................................................................................... 172
6.9.6 Beacon configuration.................................................................................................. 193
6.9.7 Spatial mapping configuration.....................................................................................201
Glossary: Application notes and white papers............................... 204
List of commands.............................................................................. 205
Index....................................................................................................212
Contents
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Contents
6User Manual 1179.1941.02 ─ 05
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1 Welcome to the IEEE 802.11 WLAN digital
standard
The options R&S SMM-K54/-K86/-K142/-K147 are firmware applications that add functionality to generate signals in accordance with the wireless LAN standards
IEEE 802.11a/b/g/n/ac/p/j/ax/be. Table 1-1 provides an overview.
Table 1-1: Options and IEEE 802.11 standard
Option WLAN standard
R&S SMM-K54 IEEE 802.11a/b/g/n/p/j
R&S SMM-K86 IEEE 802.11ac
R&S SMM-K142 IEEE 802.11ax
R&S SMM-K147 IEEE 802.11be
For a detailed overview on required options and the WLAN technology, see Chapter 2,
"About the IEEE 802.11 WLAN options", on page 12.
Welcome to the IEEE 802.11 WLAN digital standard
Key features
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 SMM100A user manual. The latest version is available at:
www.rohde-schwarz.com/manual/SMM100A
Installation
You can find detailed installation instructions in the delivery of the option or in the
R&S SMM100A service manual.
1.1 Key features
The R&S SMM-K54/-K86/-K142/-K147 options support all mandatory and almost all
optional features of related IEEE 802.11 standards. The following list gives an overview
of the main features:
●
Support of up to eight Tx antennas
●
Support of transmission bandwidths from 20 MHz to 320 MHz, see
●
80 MHz and 160 MHz bandwidth with option R&S SMM-K86/-K142
●
Support of all three operation modes: Legacy, Mixed Mode and Green Field
●
Support of all legacy transmission modes (L-10 MHz, L-20 MHz, L-Duplicate, LUpper, L-Lower)
●
Support of all 11n transmission modes (HT-20 MHz, HT-40 MHz, HT-Duplicate, HTUpper, HT-Lower)
●
Support of all 11ac transmission modes with option R&S SMM-K86:
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VHT-20 MHz, VHT-40 MHz, VHT-80 MHz, VHT-80+80 MHz, VHT-160 MHz
●
Support of all 11ax transmission modes with option R&S SMM-K142:
HE-20 MHz, HE-40 MHz, HE-80 MHz, HE-80+80 MHz, HE-160 MHz
●
Support of all 11be transmission modes with option R&S SMM-K147:
EHT-20 MHz, EHT-40 MHz, EHT-80 MHz, EHT-80+80 MHz, EHT-160 MHz,
EHT-320 MHz
●
Additional support of the CCK and PBCC frames in accordance with
IEEE 820.11a/b/g standard
●
Support of Space Time Block Coding (STBC) and Spatial Multiplexing
●
Up to 8 spatial streams in all supported channel widths
●
Multi-User MIMO available with 2 or more total spatial streams
●
Configurable number of spatial streams, space time streams and additional spatial
streams,
●
Configurable modulation per spatial stream
●
Support of short guard interval
●
Configurable state of the scramble, interleaver, time domain windowing and channel coding
●
Configurable PPDU, MAC header and FCS
●
Integrated frame block concept for the generation of sequence of cascaded frame
blocks with different configurations and data rates
●
Support of simple diversity and MIMO tests (frequency flat MIMO channel simulation) without additional channel simulator
●
Simulation of real-time MIMO channel condition
●
Support of up to 37 users in 802.11ax trigger frame user info field
Welcome to the IEEE 802.11 WLAN digital standard
What's new
1.2 Accessing the IEEE 802.11 WLAN dialog
To open the dialog with IEEE 802.11 WLAN settings
► In the block diagram of the R&S SMM100A, select "Baseband > IEEE 802.11".
A dialog box opens that displays the provided general settings.
The signal generation is not started immediately. To start signal generation with the
default settings, select "State > On".
1.3 What's new
This manual describes firmware version FW 5.00.166.xx and later of the
R&S®SMM100A.
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Compared to the previous version, it provides the new features listed below:
●
Support of 20 us maximum packet extension duration, see "Max PE Duration"
on page 38.
●
Trigger frame additional info settings, see Chapter 3.6.4.3, "Additional info set-
tings", on page 80.
1.4 Documentation overview
This section provides an overview of the R&S SMM100A user documentation. Unless
specified otherwise, you find the documents on the R&S SMM100A product page at:
www.rohde-schwarz.com/manual/smm100a
1.4.1 Getting started manual
Introduces the R&S SMM100A 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.
Welcome to the IEEE 802.11 WLAN digital standard
Documentation overview
1.4.2 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 SMM100A is not included.
The contents of the user manuals are available as help in the R&S SMM100A. 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.
1.4.3 Service manual
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):
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https://gloris.rohde-schwarz.com
1.4.4 Instrument security procedures
Deals with security issues when working with the R&S SMM100A in secure areas. It is
available for download on the Internet.
1.4.5 Printed safety instructions
Provides safety information in many languages. The printed document is delivered with
the product.
1.4.6 Data sheets and brochures
The data sheet contains the technical specifications of the R&S SMM100A. It also lists
the options and their order numbers and optional accessories.
Welcome to the IEEE 802.11 WLAN digital standard
Documentation overview
The brochure provides an overview of the instrument and deals with the specific characteristics.
See www.rohde-schwarz.com/brochure-datasheet/smm100a
1.4.7 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/smm100a
1.4.8 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/smm100a
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1.5 Scope
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 SMM100A user manual.
Welcome to the IEEE 802.11 WLAN digital standard
Notes on screenshots
1.6 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 802.11 WLAN options
2.1 Required options
The basic equipment layout for generating IEEE 802.11 WLAN signals includes:
●
Baseband Generator (R&S SMM-B9)
●
Frequency option (e.g. R&S SMM-B1006)
●
Baseband real-time extension (R&S SMM-K520)
●
Option IEEE 802.11a/b/g/n (R&S SMM-K54)
●
Optional, option IEEE 802.11ac (R&S SMM-K86)
●
Optional, option IEEE 802.11ax (R&S SMM-K142)
●
Optional, option IEEE 802.11be (R&S SMM-K147)
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.
About the IEEE 802.11 WLAN options
About IEEE 802.11 WLAN technology
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 SMM-K255 for
playing LTE waveforms
●
If supported, install the real-time option of the digital standard, e.g. R&S SMM-K55
for playing LTE waveforms
For more information, see data sheet.
2.2 About IEEE 802.11 WLAN technology
IEEE 802.11n is the extension of the WLAN IEEE 802.11a/g standard to nominal peak
data rates of 600 Mbps. Like IEEE 802.11a/g, IEEE 802.11n is also based on OFDM.
Also, IEEE 802.11n uses MIMO technology, up to 40 MHz bandwidth and special coding for increased throughput. The extension towards higher data rates is also known as
high throughput mode (HT mode) of 802.11n. The non-HT mode can be seen as the
part of 802.11n, which is backwards compatible to EEE 802.11a/g.
IEEE 802.11p is another extension to the WLAN IEEE 802.11a/g standard for the
usage of wireless access in vehicular environment, e.g. Car-to-Car (C2C), Vehicle-toVehicle (V2V), intelligent transport systems (ITS).
IEEE 802.11ac further extends 802.11n to nominal peak data rates of 6240.0 Mbps.
Like IEEE 802.11a/g/n, IEEE 802.11ac is also based on OFDM. Also, IEEE 802.11ac
uses MIMO technology, up to 160 MHz bandwidth and special coding for increased
throughput. The extension towards higher data rates is also known as very high
throughput (VHT) mode of 802.11ac.
IEEE 802.11ax is aimed to improve the user experience and network performance in
dense deployments in the 2.4 GHz and 5 GHz band. It supports uplink and downlink
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multi user MIMO and up to 160 MHz bandwidth. It is based on OFDM and OFDMA
modulation.
IEEE 802.11be further extends IEEE 802.11ax offering frequency bands at 2.4 GHz,
5 GHz and 6 GHz. It supports uplink and downlink multi-user MIMO and up to 320 MHz
bandwidth. It is also based on OFDM and OFDMA modulation.
A short comparison between the IEEE 802.11 standards is provided in Table 2-1 and
Table 2-2. Also, further reading links provide more detailed information about technol-
ogy and application of the IEEE 802.11 standards.
Table 2-1: Overview 802.11n, 802.11ac, 802.11ax and 802.11be
Parameters 802.11n 802.11ac 802.11ax 802.11be
Frequency bands 2.4 GHz, 5 GHz 2.4 GHz, 5 GHz 2.4 GHz, 5 GHz 2.4 GHz, 5 GHz,
About the IEEE 802.11 WLAN options
About IEEE 802.11 WLAN technology
*
6 GHz
Channel bandwidth
(MHz)
Subcarrier spacing
(kHz)
Symbol time (us) 3.2 3.2 12.8 12.8
Cyclic prefix (us) 0.8 0.8, 0.4 0.8, 1.6, 3.2 0.8, 1.6, 3.2
Transmission technology
MU-MIMO
Modulation OFDM OFDM OFDM, OFDMA OFDM, OFDMA
Data subcarrier
modulation
Coding BCC (mandatory)
Max. data rate
(Mbit/s)
Further reading 1MA179 1MA192, 1GP94 1MA222, 1GP115 -
20, 40 20, 40, 80, 80+80,
160
312.5 312.5 78.125 78.125
SISO, SU-MIMO SISO, SU-MIMO,
MU-MIMO
BPSK, QPSK,
16QAM, 64QAM
LDPC (optional)
600 6933
Downlink Uplink and down-
BPSK, QPSK,
16QAM, 64QAM,
256QAM
BCC (mandatory)
LDPC (optional)
20, 40, 80, 80+80,
160
SISO, SU-MIMO,
MU-MIMO
link
BPSK, QPSK,
16QAM, 64QAM,
256QAM,
1024QAM
BCC (mandatory)
LDPC (mandatory)
20, 40, 80, 80+80,
160, 320
SISO, SU-MIMO,
MU-MIMO
Uplink and downlink
BPSK, QPSK,
16QAM, 64QAM,
256QAM,
1024QAM,
4096QAM
BCC (mandatory)
LDPC (mandatory)
Table 2-2: Overview 802.11a, 802.11b, 802.11g, 802.11j and 802.11p
Parameters 802.11a 802.11b 802.11g 802.11j 802.11p
Frequency bands 5 GHz 2.4 GHz 2.4 GHz,
5 GHz
Channel bandwidth
(MHz)
Subcarrier spacing
(kHz)
Symbol time (us) 3.2 3.2 3.2 3.2 3.2
20 20 20 10, 20 10, 20
312.5 312.5 312.5 312.5 312.5
4.9 GHz to 5.0
GHz
5.85 GHz to
5.925 GHz
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Parameters 802.11a 802.11b 802.11g 802.11j 802.11p
Cyclic prefix (us) 0.8 0.8 0.8 0.8 0.8
About the IEEE 802.11 WLAN options
Operation modes
Transmission technology
Modulation OFDM DSSS DSSS, OFDM OFDM OFDM,
Data subcarrier
modulation
Coding BCC (manda-
Max. data rate
(Mbit/s)
Further reading 1MA69,
SISO SISO SISO SISO SISO
BPSK, QPSK,
16QAM,
64QAM
tory)
LDPC
(optional)
54 11 54
1GP56
2.3 Operation modes
The IEEE 802.11n standard defined the following three operation modes:
●
Legacy mode
This mode is provided for backwards compatibility with the IEEE 802. a/g standard.
The mode is also known as Non-HT mode.
●
Mixed Mode
A legacy preamble and header (L-STF, L-LTF and L-SIG) are wrapping the HT part
of the frame so that the frame is complying with OFDM-PHY and ERP-OFDM-PHY
corresponding to 802.11 a/g respectively.
●
Green Field
In this mode, frames are being transmitted in a new high throughput format that
does not comply with the legacy mode. Green Field is an optional mode.
CCK, PBCC CCK, PBCC,
BPSK, QPSK,
16QAM,
64QAM
BCC (mandatory)
LDPC
(optional)
1MA69,
1GP56
BCC (mandatory)
LDPC (mandatory)
1MA69,
1GP56
BPSK, QPSK,
16QAM,
64QAM
BCC (mandatory)
LDPC (mandatory)
1MA69,
1GP56
OFDMA
BPSK, QPSK,
16QAM,
64QAM
BCC (mandatory)
LDPC (mandatory)
1MA152
Figure 2-1 shows the packet formats of the different operation modes that can be trig-
gered by a device supporting the IEEE 802.11n standard.
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Figure 2-1: PLCP packet format for IEEE 802.11n
1 = Operation mode "Legacy"
2 = Operation mode "Mixed Mode"
3 = Operation mode "Green Field"
The Table 2-3 gives an overview of the frequency domain operation modes of the
physical layer. Note that the duplicate mode corresponds to repeating the same complex numbers modulating the subcarriers of the upper channel on the lower channel.
About the IEEE 802.11 WLAN options
Operation modes
1
2
3
Table 2-3: Frequency domain PHY operation
LM Legacy mode as in IEEE 802.11a/g
Also, the CCK and the PBCC frames as in IEEE 802.11b/g
HT-Mode Frequency: 20 MHz and 40 MHz, 1 to 4 spatial streams (HT Duplicate Mode
included)
Duplicate Non-HT mode IEEE 802.11a OFDM-PHY format, 20 MHz and 40 MHz dual operation, upper
channel rotated by 90˚ relative to lower channel
Upper mode Non-HT/HT frame in the upper 20 MHz channel
Lower mode Non-HT/HT frame in the lower 20 MHz channel
VHT-Mode Requires R&S SMM-K86.
Frequency 20 MHz, 40 MHz, 80 MHz, 160 MHz, 1...8 spatial streams
HE mode Requires R&S SMM-K142.
Frequency 20 MHz, 40 MHz, 80 MHz, 160 MHz, 1...8 spatial streams
EHT mode Requires R&S SMM-K147.
Frequency 320 MHz, 1 to 16 spatial streams
When operating in the OFDM 20 MHz mode, there are 64 subcarriers available; the
migration to 40 MHz mode offers 128 subcarriers with the same frequency spacing of
312.5 KHz. 80 MHz bandwidth is using 256 subcarriers, keeping the original frequency
spacing. With 160 MHz bandwidth 512 subcarriers apply.
For IEEE 802.11ax in the OFDMA frequency allocation, the resource units (RU) may
contain 26, 52, 106, 242, 484 or 996 tones (aka subcarriers) and are in fixed locations.
The tones/subcarriers in the resource units are adjacent and contiguous except in the
middle of the channel where DC null carriers are present.
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2.4 Signal generation
The generation of an IEEE 802.11n/ac/ax signal is done in multiple steps. In high
throughput (HT) and very high throughput (VHT) modes, the data of a single user is
specially coded and transmitted via up to eight Tx antennas.
In this implementation, the mapping of the Tx antennas' signals to the output paths of
the instrument can be configured. This function can be used for the simulation of frequency flat MIMO channel, i.e. one carrier analysis like BER tests for instance. Another
application of the configurable mapping is the possibility to generate a combined signal
from different antennas if there is one path instrument or limited number of baseband
paths.
Refer to Figure 2-2 for an overview of the signal flow for generation of such a signal in
HT mode.
About the IEEE 802.11 WLAN options
Signal generation
Figure 2-2: IEEE 802.11 n/ac/ax transmission chain
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3 WLAN configuration and settings
Access:
► Select "Baseband > IEEE 802.11".
The remote commands required to define these settings are described in Chapter 6,
"Remote-control commands", on page 111.
● General settings......................................................................................................17
● Transmit antenna setup.......................................................................................... 21
● Frame block configuration.......................................................................................23
● PPDU configuration.................................................................................................30
● A-MPDU settings.....................................................................................................60
● MAC header and FCS configuration for frame block.............................................. 62
● MAC header HT/HE and VHT configuration........................................................... 81
● Spatial mapping...................................................................................................... 91
WLAN configuration and settings
General settings
3.1 General settings
Access:
► Select "Baseband > IEEE 802.11".
This dialog provides settings to configure default settings, "Save/Recall" settings
and settings to configure the transmission bandwidth.
Also, it displays the sample rate and provides access to settings to configure transmit antennas, baseband filters and clipping.
Settings
State..............................................................................................................................18
Set to Default................................................................................................................ 18
Save/Recall...................................................................................................................19
Generate Waveform File...............................................................................................20
Transmission Bandwidth...............................................................................................20
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Sample Rate................................................................................................................. 20
Transmit Antennas Setup..............................................................................................20
Filter/Clipping Settings.................................................................................................. 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:WLNN:STATe on page 117
Set to Default
Calls the default settings. The values of the main parameters are listed in the following
table.
Parameter Value
WLAN configuration and settings
General settings
General parameters
"State" Not affected by "Set to Default"
"Transmission Bandwidth" 20 MHz
"Configure Baseband B from Baseband A" Off
"Tx Antennas" 1
"Filter" Cosine
"Clipping" Off
Frame blocks configuration
"Frame Blocks" 1
"Frame Block Type" DATA
"Frame Blocks State" On
"Physical Mode" Mixed mode
"Tx Mode" HT-20 MHz
"Frames" 1
"Idle Time" 0.1 ms
"Data Source" PN9
TX antenna setup
"Antennas" 1
"Mapping Coordinates" Cartesian
"Output" First set "Baseband", rest is set to Off
"Matrix Elements" ("Real", "Imaginary", "Magnitude",
"Phase")
PPDU configuration
"Spatial Streams" 1
All zero but diagonal = 1
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Parameter Value
"Space Time Streams" 1
"Extended Spatial Streams" 0
"Space Time Block Coding" inactive
WLAN configuration and settings
General settings
Parameter value
"MCS" 1
"Data Rate (Mbps)" 13
"Data Bits Per Symbol" 52
"Stream 1" QPSK
"Channel Coding" BCC
"Coding Rate" ½
"Guard" Long
"Data Length" 1024 bytes
"Number of Data Symbols" 158
"Scrambler" "ON (user init)"
"Scrambler Init" 01
"Interleaver Active" ON
"Service Field" 0000
"Time Domain Windowing Active" On
"Transition Time" 100 ns
"Preamble/Header Active" ON
"Smoothing" ON
Spatial mapping
"Mode" Spatial expansion
"Index k" 20
Remote command:
[:SOURce<hw>]:BB:WLNN:PRESet on page 115
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 SMM100A user manual.
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Remote command:
[:SOURce<hw>]:BB:WLNN:SETTing:CATalog? on page 115
[:SOURce<hw>]:BB:WLNN:SETTing:LOAD on page 116
[:SOURce<hw>]:BB:WLNN:SETTing:STORe on page 116
[:SOURce<hw>]:BB:WLNN:SETTing:DELete on page 116
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:WLNN:WAVeform:CREate on page 117
Transmission Bandwidth
Selects the transmission bandwidth.
You can set the transmission bandwidth independent from the configuration of frame
blocks. If invalid settings in frame blocks occur, a warning message is displayed.
WLAN configuration and settings
General settings
Click "Ok" to resolve invalid settings, corresponding parameters are set automatically
to their default values.
Remote command:
[:SOURce<hw>]:BB:WLNN:BWidth on page 115
Sample Rate
Displays the sample rate of the signal specific for the selected bandwidth.
Remote command:
[:SOURce<hw>]:BB:WLNN:SRATe? on page 123
Transmit Antennas Setup
Accesses the dialog for configuring the TX antennas, see Chapter 3.2, "Transmit
antenna setup", on page 21.
Remote command:
n.a.
Filter/Clipping Settings
Accesses the dialog for setting baseband filtering and clipping, see Chapter 4.1, "Filter/
clipping settings", on page 95.
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3.2 Transmit antenna setup
Access:
► Select "Baseband > IEEE 802.11 > General > Transmit Antennas Setup".
WLAN configuration and settings
Transmit antenna setup
This dialog is used to map the generated Tx chains to different destinations ("Baseband A/B", "File" or "OFF") and makes it possible to combine different Tx antenna
signals.
Settings
Antennas.......................................................................................................................21
Mapping Coordinates....................................................................................................21
Transmission Antenna Table......................................................................................... 22
└ Output............................................................................................................. 22
└ Real/Magnitude...............................................................................................22
└ Imaginary/Phase.............................................................................................22
Antennas
Selects the number of transmit antennas to be used.
Remote command:
[:SOURce<hw>]:BB:WLNN:ANTenna:MODE on page 133
Mapping Coordinates
Selects the coordinate system of the transmission chain matrix.
"Cartesian"
"Cylindrical"
Remote command:
[:SOURce<hw>]:BB:WLNN:ANTenna:SYSTem on page 133
Sets the Cartesian coordinates system ("Real", "Imaginary").
Sets the cylindrical coordinates system ("Magnitude", "Phase").
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Transmission Antenna Table
Configures the output matrix and transmission chain matrix coefficients.
During signal calculation, the R&S SMM100A evaluates the transmission chain matrix
and takes into account the set phase ratios. However, the power ratio of the antennas
is not considered.
To generate a WLAN signal of antennas with different power level, set the power level
of the corresponding path to the desired level in the header display of the instrument.
Output ← Transmission Antenna Table
Selects the destination of the calculated IQ chains.
"OFF"
"Baseband A/B"
"File"
Remote command:
[:SOURce<hw>]:BB:WLNN:ANTenna:TCHain<ch>:OUTPut:DESTination
on page 134
[:SOURce<hw>]:BB:WLNN:ANTenna:TCHain<ch>:OUTPut:FSELect
on page 134
WLAN configuration and settings
Transmit antenna setup
No mapping takes place.
The IQ chain is output to the selected baseband. Exactly one output
stream can be mapped to a baseband.
The IQ chain is saved in a file.
Real/Magnitude ← Transmission Antenna Table
Enters the value of the real or the magnitude coordinates.
Remote command:
For "Cartesian" mapping coordinates:
[:SOURce<hw>]:BB:WLNN:ANTenna:TCHain<ch>:TX<dir>:REAL on page 134
For "Cylindrical" mapping coordinates:
[:SOURce<hw>]:BB:WLNN:ANTenna:TCHain<ch>:TX<dir>:MAGNitude
on page 135
Imaginary/Phase ← Transmission Antenna Table
Enters the value of the imaginary or the phase coordinates.
Remote command:
For Cartesian mapping coordinates:
[:SOURce<hw>]:BB:WLNN:ANTenna:TCHain<ch>:TX<dir>:IMAGinary
on page 135
For "Cylindrical" mapping coordinates:
[:SOURce<hw>]:BB:WLNN:ANTenna:TCHain<ch>:TX<dir>:PHASe on page 135
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3.3 Frame block configuration
Access:
► Select "Baseband > IEEE 802.11 > Frame Blocks".
WLAN configuration and settings
Frame block configuration
This tab provides settings to select and configure a frame block.
Settings:
Std.................................................................................................................................23
Type.............................................................................................................................. 24
Physical Mode...............................................................................................................25
Tx Mode........................................................................................................................ 25
Frames..........................................................................................................................28
Idle Time /ms.................................................................................................................28
Data...............................................................................................................................28
Boost /dB.......................................................................................................................28
PPDU............................................................................................................................ 29
Data Rate /Mbps........................................................................................................... 29
State..............................................................................................................................29
Append..........................................................................................................................29
Insert............................................................................................................................. 29
Delete............................................................................................................................29
Copy..............................................................................................................................29
Paste.............................................................................................................................29
Std.
Selects the IEEE 802.11 WLAN standard.
After selecting the standard, only settings that are relevant for the standard are availa-
ble. Affected parameters are "Type", "Physical Mode" and "Tx Mode", see Table 3-1.
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Table 3-1: Availability "Standard", "Type", "Physical Mode", "TxMode"
Standard Type Physical mode Txmode
User all all all
11a/g Data/Beacon/Trigger Legacy L-20MHz
11b/g Data/Beacon/Trigger Legacy CCK
11p/j Data/Beacon/Trigger Legacy L-10MHz
11n all Mixed Mode/Green Field HT-20MHz
WLAN configuration and settings
Frame block configuration
L-Duplicate
L-Upper
L-Lower
PBCC
HT-40MHz
HT-Duplicate
HT-Upper
HT-Lower
11ac all Mixed Mode VHT-20MHz
VHT-40MHz
VHT-80MHz
VHT-80+80MHz
VHT-160MHz
11ax Data/Trigger Mixed Mode HE-20MHz
HE-40MHz
HE-80MHz
HE-80+80MHz
HE-160MHz
11be Data/Trigger Mixed Mode EHT-20MHz
EHT-40MHz
EHT-80MHz
EHT-160MHz
EHT-320MHz
Remote command:
[:SOURce<hw>]:BB:WLNN:FBLock<ch>:STANdard on page 141
Type
Selects the PPDU type.
"Data"
"Sounding"
Only "Data Long Training" fields are used to probe the channel.
Staggered preambles are used to probe additional dimension of the
MIMO channel.
"Type > Sounding" is not available for "Physical Mode > Legacy".
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WLAN configuration and settings
Frame block configuration
"Beacon"
A frame of type "Beacon" contains all the information about a network, for example the beacon interval, capability information and the
IBSS parameter set. The access point (AP) of a service set periodically transmits the beacon frame to establish and maintain the network.
"Trigger"
A downlink trigger frame is generated to synchronize the transmission
of a DUT's trigger-based uplink frame.
Remote command:
[:SOURce<hw>]:BB:WLNN:FBLock<ch>:TYPE on page 142
Physical Mode
Selects the preamble design.
For "Physical Mode > Legacy", only "Type > Data" is available.
For 80 MHz transmission bandwidth and "Type > Data", you can only operate in "Phys-
ical Mode > Mixed Mode".
Note: "Physical Mode > Mixed Mode" transmissions can be detected by a physical
layer transceiver of 802.11a/g OFDM, MAC FCS would however fail.
"Legacy"
Compatible with 802.11a/g OFDM devices. Also, CCK/PBCC frames
as defined in IEEE 802.11b/g are supported.
This mode applies to "Cylindrical" mapping coordinates.
"Mixed Mode"
For High Throughput (HT), Very High Throughput(VHT) , High Efficiency (HE), Extremely High Throughput (EHT) and 802.11a/g OFDM
devices.
"Green Field"
For HT networks only.
Remote command:
[:SOURce<hw>]:BB:WLNN:FBLock<ch>:PMODe on page 140
Tx Mode
Sets the Tx mode.
The available Tx modes depend on the physical mode, see the tables below.
Table 3-2: Tx modes for "Type > Data/Trigger", and "Physical Mode > Legacy"
Tx mode Transmission bandwidth
20 MHz 40 MHz 80 MHz 160 MHz 320 MHz
L-10MHz x x x x -
L-20MHz x x x x -
L-Duplicate - x x x -
L-Upper - x x x -
L-Lower - x x x -
CCK x x x x -
PBCC x x x x -
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Table 3-3: Tx modes for "Type > Data/Trigger" and "Physical Mode > Mixed Mode"
Tx mode Transmission bandwidth
HT-20MHz x x x x -
HT-40MHz - x x x -
HT-Duplicate - x x x -
HT-Upper - x x x -
HT-Lower - x x x -
VHT-20MHz x x x x -
VHT-40MHz - x x x -
VHT-80MHz - - x x -
VHT-80+80MHz - - x x -
VHT-160MHz - - - x -
WLAN configuration and settings
Frame block configuration
20 MHz 40 MHz 80 MHz 160 MHz 320 MHz
HE-20MHz x x x x -
HE-40MHz - x x x -
HE-80MHz - - x x -
HE-80+80MHz - - x x -
HE-160MHz - - - x -
EHT-20MHz x x x x -
EHT-40MHz - x x x -
EHT-80MHz - - x x -
EHT-160MHz - - - x -
EHT-320MHz - - - - x
Table 3-4: Tx modes for "Type > Data", and "Physical Mode > Green Field"
Tx mode Transmission bandwidth
20 MHz 40 MHz 80 MHz 160 MHz 320 MHz
HT-20MHz x x x x -
HT-40MHz - x x x -
HT-Duplicate - x x x -
HT-Upper - x x x -
HT-Lower - x x x -
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Table 3-5: Tx modes for "Type > Sounding" and "Physical Mode > Mixed Mode"
Tx mode Transmission bandwidth
HT-20MHz x x x x -
HT-40MHz - x x x -
HT-Duplicate - x x x -
HT-Upper - x x x -
HT-Lower - x x x -
VHT-20MHz x x x x -
VHT-40MHz - x x x -
VHT-80MHz - - x x -
VHT-80+80MHz - - x x -
VHT-160MHz - - - x -
WLAN configuration and settings
Frame block configuration
20 MHz 40 MHz 80 MHz 160 MHz 320 MHz
Table 3-6: Tx modes for "Type > Sounding" and "Physical Mode > Green Field"
Tx mode Transmission bandwidth
20 MHz 40 MHz 80 MHz 160 MHz 320 MHz
HT-20MHz x x x x -
HT-40MHz - x x x -
HT-Duplicate - x x x -
HT-Upper - x x x -
HT-Lower - x x x -
Table 3-7: Tx modes for "Type > Beacon", and "Physical Mode > Legacy"
Tx mode Transmission bandwidth
20 MHz 40 MHz 80 MHz 160 MHz 320 MHz
L-10MHz x x x x -
L-20MHz x x x x -
L-Duplicate - x x x -
L-Upper - x x x -
L-Lower - x x x -
CCK x x x x -
PBCC x x x x -
Remote command:
[:SOURce<hw>]:BB:WLNN:FBLock<ch>:TMODe on page 141
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Frames
Sets the number of frames to be transmitted in the current frame block.
Remote command:
[:SOURce<hw>]:BB:WLNN:FBLock<ch>:FCOunt on page 138
Idle Time /ms
Sets the time interval separating two frames in this frame block.
Remote command:
[:SOURce<hw>]:BB:WLNN:FBLock<ch>:ITIMe on page 140
Data
Selects the data source.
For "Std. > 11ax/11be", only the "A-MPDU" data source is available.
The following standard data sources are available:
●
"All 0, All 1"
An internally generated sequence containing 0 data or 1 data.
●
"PNxx"
An internally generated pseudo-random noise sequence.
●
"Pattern"
An internally generated sequence according to a bit pattern.
Use the "Pattern" box to define the bit pattern.
●
"Data List/Select DList"
A binary data from a data list, internally or externally generated.
Select "Select DList" to access the standard "Select List" dialog.
– Select the "Select Data List > navigate to the list file *.dm_iqd > Select" to
select an existing data list.
– Use the "New" and "Edit" functions to create internally new data list or to edit
an existing one.
– Use the standard "File Manager" function to transfer external data lists to the
instrument.
See also:
●
Section "Modulation Data" in the R&S SMM100A user manual.
●
Section "File and Data Management" in the R&S SMM100A user manual.
●
Section "Data List Editor" in the R&S SMM100A user manual
WLAN configuration and settings
Frame block configuration
Remote command:
[:SOURce<hw>]:BB:WLNN:FBLock<ch>:DATA on page 138
[:SOURce<hw>]:BB:WLNN:FBLock<ch>:DATA:PATTern on page 139
[:SOURce<hw>]:BB:WLNN:FBLock<ch>:DATA:DSELection on page 139
Boost /dB
Assigns a specific RMS power boost/attenuation to the corresponding frame block
modulation.
The power level of a frame block modulation is calculated as sum of the power boost
and the power level set in the header of the instrument.
Note: For optimal gated power mode functionality, make sure that at least one frame
block has a set power boost of 0 dB.
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Remote command:
[:SOURce<hw>]:BB:WLNN:FBLock<ch>:BOOSt on page 138
PPDU
When clicking "Conf ...", accesses the settings for configuring the PPDU of frame
blocks. See Chapter 3.4, "PPDU configuration", on page 30.
Remote command:
n.a.
Data Rate /Mbps
Indicates the PPDU data rate.
Remote command:
[:SOURce<hw>]:BB:WLNN:FBLock<ch>:DATA:RATE? on page 140
[:SOURce<hw>]:BB:WLNN:FBLock<ch>[:USER<di>]:DATA:RATE? on page 147
State
Enables the corresponding frame block for transmission.
Remote command:
[:SOURce<hw>]:BB:WLNN:FBLock<ch>:STATe on page 141
WLAN configuration and settings
Frame block configuration
Append
Adds a default frame block behind the selected frame block.
Remote command:
[:SOURce<hw>]:BB:WLNN:FBLock:APPend on page 136
Insert
Adds a default frame block before the selected frame block.
Remote command:
[:SOURce<hw>]:BB:WLNN:FBLock<ch>:INSert on page 137
Delete
Deletes the selected frame block.
Remote command:
[:SOURce<hw>]:BB:WLNN:FBLock<ch>:DELete on page 137
Copy
Copies the selected frame block.
Remote command:
[:SOURce<hw>]:BB:WLNN:FBLock<ch>:COPY on page 136
Paste
Pastes the copied frame block behind the selected frame block.
Remote command:
[:SOURce<hw>]:BB:WLNN:FBLock<ch>:PASTe on page 137
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3.4 PPDU configuration
This chapter describes the physical protocol data unit (PPDU) settings.
Access:
► Select "Frame Blocks > PPDU > Conf...".
The dialog provides settings to configure PPDU parameters.
Available settings depend on the WLAN 802.11 standard, frame type, physical mode
and Tx mode. Detailed information is provided in the description of the parameter.
Settings
● General settings......................................................................................................30
● HE settings..............................................................................................................36
● EHT settings............................................................................................................43
● User configuration settings......................................................................................49
● Data settings........................................................................................................... 54
WLAN configuration and settings
PPDU configuration
3.4.1 General settings
Access:
1. Select "Frame Blocks > PPDU > Conf...".
2. Select "General".
This dialog provides settings to configure stream settings, modulation settings and
coding scheme settings and the PSDU bit rate.
Available settings depend on the WLAN 802.11 standard, frame type, physical mode
and Tx mode. Detailed information is provided in the description of the parameter.
Settings
● Stream settings....................................................................................................... 30
● User settings........................................................................................................... 32
● MCS configuration settings..................................................................................... 33
● CCK/PBCC settings................................................................................................ 35
3.4.1.1 Stream settings
Access:
1. Select " Frame Blocks > PPDU > Conf...".
2. Select the side-tab "General > Stream Settings".
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