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wlanVHTSIGB

Generate VHT-SIG-B waveform

Description

y= wlanVHTSIGB(cfg) generates a VHT-SIG-B1 time-domain waveform for the specified transmission parameters. See VHT-SIG-B Processing for waveform generation details.

example

[y,bits] = wlanVHTSIGB(cfg) also outputs VHT-SIG-B information bits.

[___ = wlanVHTSIGB(cfg,OversamplingFactor=osf) generates an oversampled waveform with the specified oversampling factor. For more information about oversampling, see FFT-Based Oversampling.

Examples

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Generate the VHT-SIG-B waveform for an 80 MHz transmission packet.

Create a VHT configuration object, assign an 80 MHz channel bandwidth, and generate the waveform.

cfgVHT = wlanVHTConfig('ChannelBandwidth','CBW80');
vhtsigb = wlanVHTSIGB(cfgVHT);
size(vhtsigb)
ans = 1×2

   320     1

The 80 MHz waveform has one OFDM symbol and is a total of 320 samples long.

Input Arguments

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Transmission parameters, specified as a wlanVHTConfig object.

Oversampling factor, specified as a scalar greater than or equal to 1. The oversampled cyclic prefix length must be an integer number of samples.

Data Types: single | double | int8 | int16 | int32 | int64 | uint8 | uint16 | uint32 | uint64

Output Arguments

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VHT-SIG-B time-domain waveform, returned as an NS-by-NT matrix. NS is the number of time-domain samples and NT is the number of transmit antennas.

NS is proportional to the channel bandwidth.

ChannelBandwidthNS
'CBW20'80
'CBW40'160
'CBW80'320
'CBW160'640

See VHT-SIG-B Processing. for waveform generation details.

Data Types: double
Complex Number Support: Yes

Signaling bits used for VHT-SIG-B field, returned as an Nbits column vector. Nbits is the number of bits.

The number of output bits changes with the channel bandwidth.

ChannelBandwidthNb
'CBW20'26
'CBW40'27
'CBW80'29
'CBW160'29

See VHT-SIG-B Processing. for waveform generation details.

Data Types: int8

More About

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Algorithms

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References

[1] IEEE Std 802.11ac™-2013 IEEE Standard for Information technology — Telecommunications and information exchange between systems — Local and metropolitan area networks — Specific requirements — Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications — Amendment 4: Enhancements for Very High Throughput for Operation in Bands below 6 GHz.

Extended Capabilities

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C/C++ Code Generation
Generate C and C++ code using MATLAB® Coder™.

Version History

Introduced in R2015b


1 IEEE Std 802.11ac-2013 Adapted and reprinted with permission from IEEE. Copyright IEEE 2013. All rights reserved.