802.11be Non-HT Configuration

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1. General Settings

Number of Transmit Chains (Ntx)

Range: 1 to 8

Set the number of transmit chains. When the number of instruments is more than 1 and the Channel State is Off, it automatically equals to the number of instruments and can't be changed, otherwise, it's editable.

Puncture 20MHz subchannels

Range:

Bandwidth = 80MHz: 0001-1111

Bandwidth = 160MHz: 00000001-11111111

Bandwidth = 320MHz:0000000000000001-1111111111111111

Default:

Bandwidth = 80MHz: 1111

Bandwidth = 160MHz: 11111111

Bandwidth = 320MHz: 1111111111111111

Coupling: At least one 20MHz sub-channel is used as the primary subchannel and cannot be punched.

Bits set to 0 indicate which 20MHz subchannels are punctured in a non-HT duplicate PPDU.

For a non-HT duplicate PPDU transmission that is a preamble punctured PPDU in 11be, no signal is transmitted in that 20MHz subchannel within the PPDU bandwidth. The punctured non-HT PPDU is supported only for bandwidths wider than or equal to 80MHz.

2. Coding and Modulation

Data Rate

Choices: 6 Mbps | 9 Mbps | 12 Mbps | 18 Mbps | 24 Mbps | 36 Mbps | 48 Mbps | 54 Mbps

Default: 36 Mbps

Coupling: Affects the Number of Data Symbols in One Frame and Total Sample Points.

Select the data rate for the legacy WLAN.

Modulation

Indicates the modulation type.

Coding Rate

Indicates the coding rate of the BBC encoder.

Scrambler

Choices: On | Off

Default: On

Enable or disable the scrambler. The scrambler scrambles the data to reduce the probability of long sequences of zeros and ones.

Scrambler Initialization

Range: 0 - 127

Default: 93

Set the initial state of the scrambler in decimal format. The decimal number is converted to 7 bits for input into the scrambler.

Channel Coding State

Choices: On | Off

Default:On

Enable or disable the BCC encoder.

BCC Interleaver

Choices: On | Off

Default: On

Enable or disable the interleaver. BCC Interleaver interleaves the bits of each spatial stream (changes order of bits) to prevent long sequences of adjacent noisy bits from entering the BCC decoder. Interleaving is applied only when BCC encoding is used.

3. Payload Configuration

Payload

This field displays a summary of your payload configuration.

MPDU Length

Displays the number of octets in the current MPDU, which is comprised of MSDU, MAC Header, and MAC FCS.

Data Type

Choices: All 0s | PN9 | PN15 | User file

Default: PN9

Select the payload bits stream. This is the actual "user data" carried by a frame.

The user file must be in binary form. The least significant bit (LSB) of the first byte in the user data file will be the first bit of the user payload; the LSB of the second byte in the user file will be the ninth bit of the user payload, and so on. If user file is selected as the Data Type, the value displayed in the Data Length field will be equal to the length of the user's data file, up to the maximum data length.

PN9 Seed

Range: 0 to 511

Default: 511

Coupling: Only visible when Data Type is PN9.

Specify a seed in decimal format to generate a PN9 data sequence. The LSB of the seed comes out first. For example, if you enter a seed value of 10 (1010 in binary), the first 9 bits of the PN9 sequence are 0 1 0 1 0 0 0 0 0, with an increasing index from left to right. For more information, see PN Sequence Generation.

PN15 Seed

Range: 0 to 32767

Default: 32767

Coupling: Only visible when Data Type is PN15.

Specify a seed in decimal format to generate a PN15 data sequence. The LSB of the seed comes out first. For example, if you enter a seed value of 10 (1010 in binary), the first 15 bits of the PN15 sequence are 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0, with an increasing index from left to right. For more information, see PN Sequence Generation.

Data Length

Set the number of data bytes in a frame. The value is limited by MPDU Length.

User File

Click the button in this cell to select a user file as the data source.

User File Length

This cell displays the number of data bytes in the user file when it is selected as the payload data source.

MAC Header

Click the button in this cell to open the MAC Header Dialog (see the various dialogs below), which enables or disables pre-pending the MAC header to the data payload. You can select a General, RTS, CTS, or ACK MAC frame format by clicking the down arrow in the top right corner of the MacHeaderDialog. You can set the desired data in each of the individual fields for each format. You can also disable these fields if the data is no longer desired by clearing the MAC Header (Hex) checkbox.

MAC FCS

Use this cell to enable or disable appending the MAC FCS to the data payload. The FCS is automatically calculated by the software if this cell is enabled.

When the MAC header is not selected, then the FCS is applied to just the payload.

4. Impairments in Waveform

Quadrature Waveform Adjustment for Waveform 1

Range: -90 to 90 degrees

Set the baseband quadrature angle adjustment for Waveform 1 before channel fading and mirror spectrum.

The number of parameter groups depends on Number of Transmit Chains (Ntx). Each group is identified with an incremented waveform number, such as Waveform 1, Waveform 2, and so on.

I/Q Gain Balance for Waveform 1

Range: -10 to 10 dB

Set the baseband IQ gain balance for Waveform 1 before channel fading and mirror spectrum.

The number of parameter groups depends on Number of Transmit Chains (Ntx). Each group is identified with an incremented waveform number, such as Waveform 1, Waveform 2, and so on.