Clear Filters
Clear Filters

WLAN Toolbox: A-MPDU length is wrong for 802.11ac (VHT) packets?

3 views (last 30 days)
I am using Matlab 2017a with the WLAN Toolbox. As far as I can see, there is a bug in that the MPDU length is set incorrectly in the A-MPDU delimiter for 802.11ac (VHT) packets.
In R2017a/toolbox/wlan/wlanexamples/vhtWaveformGeneratePSDU.m there is a function named "delimiter" which sets this field. However, it basically does a direct de2bi(n,14) conversion to binary, which (as far as I can tell) fails to properly handle the two "MPDU Length High" bits described in the 802.11ac standard (see Figure Figure 8-505a1 in Section 8.6.1).
Has anyone else seen this? Or can anyone confirm whether this is a bug or not?
Many thanks!

Answers (1)

GAURAV PUROHIT
GAURAV PUROHIT on 12 Aug 2018
i agree can you share your mail id for more discussion
  2 Comments
Harry
Harry on 12 Aug 2018
I don't see any need to message privately. Anything we discuss may help someone else, so it makes sense for it to be visible on the forum.
I contacted Mathworks and they have confirmed that this is a bug. They were actually very responsive and also confirmed a couple of other bugs I found (and provided fixes very quickly). Hopefully, these fixes will eventually find their way into future releases of the WLAN toolbox. However, the last time I checked, I couldn't see any of the fixes available for download in isolation yet.

Sign in to comment.

Categories

Find more on WLAN Toolbox in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!