Open-source 5G NR Physical Downlink Control Channel (PDCCH) blind decoder: passively recovers the Downlink Control Information (DCI) and the RNTIs active in a cell, exposing scheduling/identity activity for traffic analysis. Written in C++ on srsRAN libraries; FDD, FR1 sub-6 GHz. Research-grade, the current release recommends working from a recorded I/Q file rather than live SDR, and live capture needs extra setup.
Research code accompanying a 2023 IEEE Symposium on Security and Privacy paper: FDD only, and its README recommends using a recorded file for this release. Last commit 2024-11-14. Source · checked 2026-09-28