Unable to Demodulate WLAN Signal Using RFmxWLAN When Header Decoding is Disabled

Updated Dec 9, 2025

Reported In

Software

  • RFmx WLAN

Issue Details

I am attempting to demodulate an 802.11be signal using the RFmxWLAN software. Whenever the Header Decoding property is enabled, I am able to successfully demodulate the signal. However, whenever I disable Header Decoding, I am no longer able to properly demodulate the signal and no errors are present. 

 

What do I need to set in order to successfully demodulate the WLAN signal whenever Header Decoding is disabled?

Solution

When the Header Decoding property is disabled, the header information is not read from the header fields in the PPDU. You must specifically configure all of the individual frame and user parameters. All of the properties that you will need to configure are listed Header Decoding Enabled Property page from the RFmx WLAN properties reference page. 

 

In addition to the properties listed in the above link, it is also recommended to set the Number of SIG Symbols and Maximum Measurement Length properties specifically as well. The Number of SIG Symbols is to be used for both 802.11be and 802.11bn (EHT-SIG and UHR-SIG). The Number of HE-SIG-B Symbols is to be used for 802.11ax (HE-SIG-B). 

Related Links

RFmxWLAN Properties

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