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.

Apps

Wireless Waveform GeneratorCreate, impair, visualize, and export modulated waveforms

Objects

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wlanHEMUConfigCreate HE MU configuration object
wlanHESUConfigCreate HE SU configuration object
wlanHETBConfigCreate HE TB configuration object
wlanDMGConfigCreate DMG configuration object
wlanS1GConfigCreate S1G-format configuration object
wlanVHTConfigCreate VHT configuration object
wlanHTConfigCreate HT configuration object
wlanNonHTConfigCreate non-HT configuration object
wlanHERecoveryConfigCreate HE recovery configuration object

Functions

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ruInfoReturn HE format resource unit allocation information
getPSDULengthCalculate HE PSDU length
getTRSConfigurationValid HE TB PHY configuration in response to triggering frame containing TRS Control subfield
packetFormat Return WLAN packet format
phyType Return DMG PHY modulation type
showAllocationShow resource unit (RU) allocation
wlanAPEPLengthCalculate APEP length in octets
wlanPSDULengthCalculate PSDU length in octets
wlanWaveformGeneratorGenerate WLAN waveform
wlanSampleRateReturn 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

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 Multiuser VHT Waveform

Generate a multiuser VHT waveform from individual components.

Basic VHT Data Recovery Steps

Perform basic VHT data recovery.

Parameterization

Mapping 802.11 Standards to WLAN Toolbox Configuration Objects

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

WLAN Parameterization

Describes configuration objects defined in WLAN Toolbox.

WLAN PPDU Structure

Describes the WLAN PPDUs you can model by 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

Parameterize and generate different IEEE® 802.11ax™ high efficiency (HE) format packets.

Open Script
802.11ax PHY-Focused System-Level Simulation

802.11ax PHY-Focused System-Level Simulation

Perform a PHY-focused system-level simulation for IEEE® 802.11ax™. Part (A) validates the simulation scenario, radio characteristics, and large-scale fading model by comparing against published calibration results. Part (B) estimates the packet error rate of the 802.11ax network by simulating individual links between active nodes under a basic clear channel assessment scheme.

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

802.11ad Single Carrier Link with RF Beamforming in Simulink

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

Beamform 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

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

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

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

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

Simulate an IEEE® 802.11n™ HT link in Simulink® with WLAN Toolbox™.

Open Model
802.11 OFDM Beacon Receiver with Captured Data

802.11 OFDM Beacon Receiver with Captured Data

A receiver design that is able to recover 802.11™ OFDM beacon packets in non-HT format transmitted over the air from commercial 802.11 hardware. Beacon packets are typically transmitted in non-HT format, even for HT [ 1 ], VHT [ 1 ], and/or HE [ 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

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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