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PHY Modeling

Physical layer options, parameterization, and waveform generation

WLAN Toolbox™ provides functions for modeling 802.11™ physical layer processing. Format configuration objects are used to parameterize these functions and to create WLAN waveforms compliant with IEEE® 802.11 standards.

Functions

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Object Creation

wlanHEMUConfigCreate multiuser HE format configuration object
wlanHESUConfigCreate single user HE format configuration object
wlanDMGConfigCreate DMG format configuration object
wlanS1GConfigCreate S1G format configuration object
wlanVHTConfigCreate VHT format configuration object
wlanHTConfigCreate HT format configuration object
wlanNonHTConfigCreate non-HT format configuration object
wlanRecoveryConfigCreate data recovery configuration object

Object Functions

ruInfoReturn HE format resource unit allocation information
getPSDULengthReturn HE format PSDU length
packetFormat Return WLAN packet format
phyType Return DMG PHY modulation type
wlanWaveformGeneratorGenerate WLAN waveform
wlanSampleRateReturn the nominal sample rate
wlanScrambleScramble and descramble binary input sequence
wlanConstellationMapConstellation mapping
wlanConstellationDemapConstellation demapping
wlanBCCInterleaveInterleave binary convolutionally encoded input
wlanBCCDeinterleaveDeinterleave binary convolutionally interleaved input
wlanStreamParseStream-parse binary input
wlanStreamDeparseStream-deparse binary input
wlanSegmentParseBitsSegment-parse data bits
wlanSegmentDeparseBitsSegment-deparse data bits
wlanSegmentDeparseSymbolsSegment-deparse data subcarriers
wlanSegmentParseSymbolsSegment-parse data subcarriers
wlanBCCEncodeConvolutionally encode binary data
wlanBCCDecodeConvolutionally decode input data
wlanGolaySequenceGenerate Golay sequence

Properties

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wlanHEMUConfig PropertiesDefine parameter values for multiuser HE format packet
wlanHESUConfig PropertiesDefine parameter values for single user HE format packet
wlanDMGConfig PropertiesDefine parameter values for DMG format packet
wlanS1GConfig PropertiesDefine parameter values for S1G format packet
wlanVHTConfig PropertiesDefine parameter values for VHT format packet
wlanHTConfig PropertiesDefine parameter values for HT format packet
wlanNonHTConfig PropertiesDefine parameter values for non-HT format packet
wlanRecoveryConfig PropertiesDefine parameter values for data recovery

Topics

Waveform Generation and Reception

Build HE PPDU

Learn about HE waveform generation and simulation.

Build DMG PPDU

Build DMG PPDUs by using the waveform generator function.

Build S1G PPDU

Build S1G PPDUs by using the waveform generator function.

Build VHT PPDU

Build VHT PPDUs by using the waveform generator function or by building each field individually.

Build HT PPDU

Build HT PPDUs by using the waveform generator function or by building each field individually.

Build Non-HT PPDU

Build non-HT PPDUs by using the waveform generator function or by building each field individually.

Generate Multi-User VHT Waveform

Generate a multiuser VHT waveform from individual components.

Basic VHT Data Recovery Steps

Perform basic VHT data recovery.

Parameterization

Mapping of 802.11 Standards to WLAN System Toolbox Configuration Functions

The mapping between 802.11 standards, packet formats, and WLAN Toolboxfunctions is outlined here.

WLAN Parameterization

Describes the value objects defined in WLAN Toolbox.

WLAN Packet Structure

Describes the WLAN packet structures you can model using WLAN Toolbox.

Packet Size and Duration Dependencies

Discuss properties that determine packet size and duration constraints.

Processing Chain

Transmit-Receive Chain

Describes transmit - receive processing chains you can model using WLAN Toolbox.

Featured Examples

802.11ax Parameterization for Waveform Generation and Simulation

802.11ax Parameterization for Waveform Generation and Simulation

This example shows how to parameterize and generate different IEEE® 802.11ax™ high efficiency (HE) format packets.

Open Script
802.11ad Single Carrier Link with RF Beamforming in Simulink

802.11ad Single Carrier Link with RF Beamforming in Simulink

This example shows how to model an IEEE® 802.11ad™ single carrier link in Simulink® which includes phased array antenna with RF beamforming. This example requires the following products: WLAN Toolbox™ for baseband transmitter and receiver

Open Model
802.11ad Waveform Generation with Beamforming

802.11ad Waveform Generation with Beamforming

This example shows how to simulate beamforming an IEEE® 802.11ad™ DMG waveform with a phased array using WLAN Toolbox™ and Phased Array System Toolbox™.

Open Script
Basic WLAN Link Modeling

Basic WLAN Link Modeling

This example shows how to create a basic WLAN link model using WLAN Toolbox™. An IEEE® 802.11ac™ [ 1 ] VHT packet is created, passed through a TGac channel. The received signal is equalized and decoded in order to recover the transmitted bits.

Open Script
802.11ac Transmit Beamforming

802.11ac Transmit Beamforming

This example shows how the performance of an IEEE® 802.11ac™ link can be improved by beamforming the transmission when channel state information is available at the transmitter.

Open Script
802.11ac Multi-User MIMO Precoding

802.11ac Multi-User MIMO Precoding

This example shows the transmit and receive processing for a 802.11ac™ multi-user downlink transmission over a fading channel. The example uses linear precoding techniques based on a singular-value-decomposition (SVD) of the channel.

Open Script
802.11ah Waveform Generation

802.11ah Waveform Generation

This example shows how to generate IEEE® 802.11ah™ S1G waveforms and highlights some of the key features of the standard.

Open Script
802.11n Link in Simulink

802.11n Link in Simulink

This example shows how to simulate an IEEE® 802.11n™ HT link in Simulink® with WLAN Toolbox™.

Open Model
802.11 OFDM Beacon Receiver with Live Data

802.11 OFDM Beacon Receiver with Live Data

This example shows a receiver design that is able to recover 802.11™ OFDM non-HT based beacon packets transmitted over the air from commercial 802.11 hardware. Beacon packets are typically transmitted in non-HT format, even for HT [ 1 ] and/or VHT [ 2 ] capable hardware. Packet information such as SSID is printed to the command-line during recovery.

Open Script
802.11 Dynamic Rate Control Simulation

802.11 Dynamic Rate Control Simulation

This example shows dynamic rate control by varying the Modulation and Coding scheme (MCS) of successive packets transmitted over a frequency selective multipath fading channel.

Open Script
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