802.11bn Signal Configuration

This topic applies to the following Generation Mode:

UHR ELR PPDU

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1. General Settings

LTF Symbol Interval Mode

Select the Symbol interval (with guard interval) for the UHR-LTF field. ELR PPDU only supports 2x UHR-LTF + 1.6 us GI.

Number of UHR-LTFs

Specify the number of UHR-LTFs. ELR PPDU only supports two UHR-LTF symbols.

Number of Transmit Chains (Ntx)

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

Spatial Mapping Matrix

A dialog appers for setting the contents of the spatial mapping matrix.

2. U-SIG Settings

Link

Indicates whether the frame is Uplink or Downlink. The field is set to DL for TDLS and set to UL for UHR TB PPDU.

BSS Color

Get or Set the Base station identifier.The BSS Color field is an identifier of the BSS

TXOP Duration

Get or set the remaining time duration in the current TXOP. Set to 8449 us to indicate no duration information. Set to value other than 8449us to indicate duration information for NAV setting and protection of the TXOP. When the value starting from 0 to 504 us, the granularity is 8 us and when starting from 512 to 8448 us, the granularity is 128 us.

3. UHR-SIG Settings

LDPC Extra Symbol

Indicates the presence of the extra OFDM symbol for LDPC.

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.

User #

The index for each user.

Nss

Set the number of Spatial Streams used by current user. Its maximum value is 8 for Single User, while it's 4 for Multi User MIMO. ELR PPDU only supports one spatial stream.

Mcs Index

Select the MCS Index. Please note that UHR-MCS 14 is only applied for UHR MU PPDU Compress Mode, bandwidth is greater than or equal to 80 MHz, no preamble puncture exist, and Nss = 1. MCS 15 is only applied for Nss,u= 1,and not supported over MRU 2x996+484 and MRU 3x996+484.

Channel Coding Mode

Select the Channel Coding mode, which could be BCC encoding and LDPC encoding.