ST-DDA: Dynamic Channel Estimation in the Doppler-Delay-Angle Domain via Sparse Subspace Tracking for TDD Systems
2026-07-23T08:51:43Z•47963ae2568a261aceaee333fefd00b5886f6207b06d2d09120b1b75a50b9ca1
Doppler-delay-angle (DDA)LLM agentsOFDMTDD systemsWasserstein spacesautoresearchbistatic OFDM rangingchannel estimationcovert communicationscovertness/detection error probabilitydrift-aware denoisingflow matchinggraph signal processingintelligent reflecting surfaces (IRS)mismatched filtering','positioning','PASS','matrix pencilnetwork-traffic anomaly detectionnon-contact medical sensingopen-sourceradar spirometryreinforcement learningsatellite communications (SatCom)sensor placementsparse optimizationsparse subspace trackingwireless optimization
What happened
Collection of recent arXiv submissions (signal processing / wireless / ML) covering: ST-DDA — an online sparse-subspace tracker for full-band TDD channel estimation in the Doppler–delay–angle domain; SpiRadar — a radar-based non-contact spirometry system with sparse polynomial modelling and pediatric validation; WARA — a closed-loop multi-agent LLM autoresearch framework for wireless optimization (code released); continuous-space optimal sensor placement via flow matching; a covert precision satellite communication framework using cooperative IRSs and OFDM random subcarrier selection with prov
Why it matters
A reviewed impact interpretation has not been published for this record.
Evidence and limitations
- Source ID
- arxiv_eess_sp
- Record identifier
- 47963ae2568a261aceaee333fefd00b5886f6207b06d2d09120b1b75a50b9ca1
- Enrichment time
- 2026-07-23T08:51:43Z
- AI-assisted enrichment
- Yes
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