meneghello-80mhz-csi

What it is

Real 802.11ac, 80 MHz Wi-Fi-CSI dataset for human sensing (Meneghello et al. 2023, meneghello2023_0a93 ↗). Acquired (2026-06-25) as the independent-hardware confirmation for occupancy-csi-variance (H4): a wholly different platform from wimans (Intel-5300 3×3×30) — Nexmon-CSI, 242 OFDM sub-channels, 4 monitor antennas, ASUS/Netgear/TP-Link routers.

Verified specs

• 23.6 GB total, .mat traces; each = (N·N_ant) × 256 complex CFR (csi_buff; 242 usable sub-channels), N = 6,600–50,000 vectors/antenna over 40–300 s. 7 environments, 13 subjects, 3 hardware setups, multi-day (2020 + 2022).
• 26 sub-folders: 18 AR (activity) + 4 PI (identity) + 4 PC (people counting). Only the PC set carries multi-person counts (filename PCXa_n<NN> = NN people, n00 = empty), so PC is the only H4-relevant part — AR/PI skipped.

Acquisition (GATED) & storage

• Source / license: IEEE DataPort, subscription required (the data is gated; the paper is CC-BY 4.0). Files served from S3 s3://ieee-dataport/data/95090/9987/dataset_zip/.
• Download (PC subset) — needs an IEEE DataPort subscription; per-account AWS keys from the DataPort Account page → aws configure --profile ieee-dataport (region us-east-1):

  aws s3 cp --profile ieee-dataport --recursive \
    s3://ieee-dataport/data/95090/9987/dataset_zip/PC-1a/ <dest>/PC-1a/   # + PC-2a, PC-3a, PC-4a
  

• Canonical store: Hetzner S3 s3://monad-knowledge/datasets/meneghello-80mhz/ (PC subset, ~6 GB). Local _attachments/datasets/meneghello-80mhz/ is a gitignored cache — safe to delete after the S3 copy is verified. (Open fallback if no subscription: operanet, Figshare — but ≤2-occupant, a weaker test.)

What we proved with it (H4 → strong)

Reduction monad_knowledge/notebooks/python/csi_meneghello_zeroshot.py (pooled temporal CV over the 242 sub-channels × 4 antennas, vs the PC count label):

• Per-environment ρ(count, CV) = +0.99 / +1.00 / +0.99 / +1.00 (PC-1a..4a); presence AUC 0.978.
• With WiMANS (different chipset/band), this second-dataset / different-hardware confirmation moved occupancy-csi-variance (H4) to strong. Figure: _attachments/wimans-zeroshot/fig_csi_meneghello_zeroshot.png.

Notes

• SHARP processing code is open on GitHub even though the raw data is gated.
• Story: 2026-06-25 - Sim-to-real story — H4 strong, simulator bounded. The 80 MHz band is also the wide-bandwidth regime probed (and excluded) as the simulator's missing band-gap mechanism in c-csi-band-calibration.