802.11n/ac (Wi-Fi 4 and Wi-Fi 5)

Receive 802.11n/ac (HT and VHT) waveforms

Model HT- and VHT-related signal reception functionality.

Functions

Waveform Detection and Synchronization

`wlanPacketDetect`	Estimate timing offset of OFDM packet using L-STF
`wlanFormatDetect`	Detect packet format
`wlanSymbolTimingEstimate`	Fine symbol timing estimate using L-LTF
`wlanCoarseCFOEstimate`	Perform coarse CFO estimation
`wlanFineCFOEstimate`	Perform fine CFO estimation
`wlanSampleRate`	Nominal sample rate
`wlanVHTTrackPilotError`	Track errors using pilot subcarriers of VHT waveform (Since R2025a)

Channel and Noise Estimation

`wlanLLTFChannelEstimate`	Channel estimation using L-LTF
`wlanLLTFNoiseEstimate`	Noise estimation using L-LTF or S1G-LTF1 (Since R2023a)
`wlanVHTLTFChannelEstimate`	Channel estimation using VHT-LTF
`wlanHTLTFChannelEstimate`	Channel estimation using HT-LTF

OFDM Demodulation and Equalization

`wlanVHTDemodulate`	OFDM-demodulate received time-domain VHT waveform (Since R2025a)
`wlanVHTEqualize`	Equalize demodulated VHT field symbols (Since R2025a)
`wlanLLTFDemodulate`	Demodulate L-LTF waveform
`wlanVHTLTFDemodulate`	Demodulate VHT-LTF waveform
`wlanHTLTFDemodulate`	Demodulate HT-LTF waveform
`wlanVHTOFDMInfo`	OFDM information for VHT transmission
`wlanHTOFDMInfo`	OFDM information for HT transmission

Signal Recovery

`wlanVHTDataBitRecover`	Recover bits from VHT-Data field (Since R2025a)
`wlanFieldIndices`	PPDU field indices
`wlanLSIGBitRecover`	Recover information bits in L-SIG field
`wlanLSIGRecover`	Recover L-SIG information bits
`wlanInterpretScramblerState`	Recover bandwidth signaling from initial scrambler state
`wlanVHTSIGARecover`	Recover bits from VHT-SIG-A field
`wlanVHTSIGBRecover`	Recover VHT-SIG-B information bits
`wlanHTSIGRecover`	Recover HT-SIG information bits
`wlanHTDataRecover`	Recover bits from HT-Data field
`wlanVHTDataRecover`	Recover bits from VHT-Data field

Bit-Level Processing

`wlanScramble`	Scramble and descramble binary input sequence
`wlanConstellationDemap`	Constellation demapping
`wlanStreamDeparse`	Stream-deparse spatial streams
`wlanBCCDecode`	BCC-decode input data
`wlanBCCDeinterleave`	Deinterleave BCC-interleaved input
`wlanSegmentDeparseBits`	Segment-deparse data bits
`wlanSegmentParseSymbols`	Segment-parse data subcarriers

MAC Frame Parsing

`wlanAMPDUDeaggregate`	Deaggregate A-MPDU and extract MPDUs
`wlanMPDUDecode`	Decode MPDU
`displayIEs`	Display list of IEs in MAC management frame

Topics

Basic VHT Data Recovery
Perform basic VHT data recovery.
End-to-End VHT Simulation with Frequency Correction
Generate, transmit, recover, and view a VHT MIMO waveform.
Transmit and Recover L-SIG, VHT-SIG-A, and VHT-SIG-B in Fading Channel
Transmit a VHT waveform through a noisy MIMO channel.

See Also

802.11n/ac (Wi-Fi 4 and Wi-Fi 5)

Transmit 802.11n/ac (HT and VHT) signals

Featured Examples

802.11ac Multi-User MIMO Precoding

802.11ac Multi-User MIMO Precoding

Perform transmit and receive processing for an IEEE^® 802.11ac™ multi-user downlink transmission over a fading channel.

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Recovery Procedure for an 802.11ac Packet

Recovery Procedure for an 802.11ac Packet

Detect a packet and decode payload bits in an IEEE 802.11ac waveform.

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Joint Sampling Clock and Carrier Frequency Offset Tracking

Joint Sampling Clock and Carrier Frequency Offset Tracking

Measure and correct offset of sampling rate and carrier frequency in a WLAN receiver.

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802.11 MAC Frame Decoding

802.11 MAC Frame Decoding

Decode IEEE 802.11™ MAC frames.

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