Abraxas3d / deviations

GNU Radio Conference 2020 Capture the Flag Challenges

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Despreader doesn't work in CDMA challenge (Japan)

Abraxas3d opened this issue · comments

the despreader only works by accident. It's a neat trick but won't hold up for other spreading sequences.

Despreading working with Paul's script, but putting in the synchronization word, spread with a a different code, caused colossal failure in the flowgraph.

Make this an investigation after the CTF because dropping in a symbol stream as an Insert Vector shouldn't have made everything collapse like that. It prevented a CDMA combined signal (the way we were doing it)

Rumor: There's a new OOT CDMA module. Might be worth looking at. Maybe not in time for this event, though.

Still would like long code CDMA working.