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Like come on, my random twitter followers can joke around and come up with the entire premise behind his papers. And then the rest of the paper is minimum-effort, always using the simplest technique that works, no optimization nor fancy modulation.
In 2015 he literally did a "GSM" version of the "WiFi" channel. Same exact approach. A computer with an 800MHz/DDR-1600 RAM bus spitting out 800MHz GSM-band noise. This new paper is literally 100% approach copypasta. He just changed the frequency and the receiver.
Except last time he wasn't using an off-the-shelf black box GSM baseband, but patching OsmocomBB, a fully open source highly documented reverse engineered baseband stack. But he could only get 1.5 bit/sec out of it... because in fact he has no idea what he's doing.
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