Null value inside 80MHz packet

seemoo-lab / nexmon_csi

Channel State Information Extraction on Various Broadcom Wi-Fi Chips

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Null value inside 80MHz packet #322

Open Phon1209 opened 1 year ago

Phon1209 commented 1 year ago

In case that heatmap contains blank space (null value) does that mean the frame is 20MHz or 40MHz instead of 80MHz? To get this heatmap, I captured on channel 36 with 80 MHz using Raspberry PI (using mcp -c 36/80 -C 1 -N 1)

Also when I tried to capture on channel 44 instead, it seems the data is misaligned. Is this considered normal?

Asafe33 commented 5 months ago

Can you explain more? What is the solution?