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* feat(signal): ADR-134 — CSI→CIR via ISTA + NeumannSolver warm-start End-to-end first-class Channel Impulse Response estimation in the Rust workspace. Bridges CSI (frequency domain) to CIR (delay domain) so multistatic coherence gating, NLOS/LOS classification, and (at HT40+) ToF ranging become tractable in `wifi-densepose-signal`. Algorithm: ISTA L1 sparse recovery over a normalized DFT sub-matrix sensing operator Φ ∈ ℂ^(K×G) with G = 3K (3× super-resolution). The Tikhonov-regularised warm start re-uses `ruvector_solver::neumann:: NeumannSolver` — same call pattern as `fresnel.rs:280` and `train/subcarrier.rs:225` — so no new crate dependencies. Tiers supported: HT20 / HT40 / HE20 (Tier A-HE, C6) / HE40. The C6 HE-LTF tier is the preferred Tier A target whenever an 11ax AP is in range; firmware substrate already shipped at v0.7.0-esp32 per ADR-110. Measured performance (release, single CirEstimator shared across 12 links): HT20 2.72 ms / HE20 3.20 ms / HT40 13.43 ms / HE40 9.71 ms per estimate(). HT20 12-link multistatic 17.7 ms — fits the 50 ms RuvSense cycle; HT40 12-link 74 ms exceeds it and is flagged in ADR-134 §2.7 as requiring Rayon parallelism or G=2K super-res reduction. Measured Φ conditioning: κ(Φ) ≈ 1.00 identically across all tiers. ADR-134 §2.3 was corrected — the C6 advantage is statistical SNR gain (√(242/52) ≈ 2.16×) from more independent measurements, not improved conditioning. Witness: bit-deterministic SHA-256 over CirEstimator output on the synthetic ADR-028 reference signal (100 frames, top-5 taps, 1e-6 quantization). Hash committed to expected_cir_features.sha256; verify-cir-proof.sh wires the check into the existing witness bundle. CI: cargo test --features cir + verify-cir-proof.sh added as separate steps under the Rust Workspace Tests job; regressions are unambiguously attributable. Files: - ADR + WITNESS-LOG-028 row 34 + CLAUDE.md module count (14 → 15) - src/ruvsense/cir.rs (~540 LOC) + lib.rs re-exports + multistatic.rs wire-up (reversible via `use_cir_gate=false`) - 3 integration tests + Criterion bench + 3 deterministic fixtures - cir_proof_runner binary + sha256 + verify-cir-proof.sh Test rate: 395 pass / 6 ignored (P2 ISTA hyperparameter tuning; see #[ignore] reasons) / 0 fail. cargo check clean; verify-cir-proof.sh VERDICT: PASS. Co-Authored-By: claude-flow <ruv@ruv.net> * fix(signal): make CIR witness cross-platform-deterministic The first witness (Windows-generated hash 89704bfd…) failed on Linux CI with a different hash (b36741bf…). Root cause: hashing `re`/`im` parts of top-5 taps at 1e-6 precision is too tight against libm differences in sin/cos/sqrt across glibc, MSVC, and Apple-clang. The previous "top-5 sorted by magnitude" form also suffered from rank instability when taps are near-tied — libm jitter could shuffle the ordering even when the algorithm is unchanged. New canonical form: full per-tap quantised-magnitude profile in natural index order, no sort. - 156 taps × 2 bytes (u16 le) per frame = 312 bytes/frame. - Quantisation 1e-2 — robust to ~1e-3 float drift while still tripping on real algorithmic changes (e.g., a 10× lambda shift moves magnitudes by >1e-2). - No top-K selection — eliminates the unstable magnitude-sort step. Regenerated expected_cir_features.sha256 — new hash 120bd7b1… If the next CI run still mismatches, the cause is structural (rustfft SIMD code path selection or NeumannSolver internal ordering), not magnitudes, and the witness needs further coarsening or to be made platform-tagged. Co-Authored-By: claude-flow <ruv@ruv.net>
WiFi-DensePose Rust Crates
See through walls with WiFi. No cameras. No wearables. Just radio waves.
A modular Rust workspace for WiFi-based human pose estimation, vital sign monitoring, and disaster response using Channel State Information (CSI). Built on RuVector graph algorithms and the WiFi-DensePose research platform by rUv.
Performance
| Operation | Python v1 | Rust v2 | Speedup |
|---|---|---|---|
| CSI Preprocessing | ~5 ms | 5.19 us | ~1000x |
| Phase Sanitization | ~3 ms | 3.84 us | ~780x |
| Feature Extraction | ~8 ms | 9.03 us | ~890x |
| Motion Detection | ~1 ms | 186 ns | ~5400x |
| Full Pipeline | ~15 ms | 18.47 us | ~810x |
| Vital Signs | N/A | 86 us (11,665 fps) | -- |
Crate Overview
Core Foundation
| Crate | Description | crates.io |
|---|---|---|
wifi-densepose-core |
Types, traits, and utilities (CsiFrame, PoseEstimate, SignalProcessor) |
|
wifi-densepose-config |
Configuration management (env, TOML, YAML) | |
wifi-densepose-db |
Database persistence (PostgreSQL, SQLite, Redis) |
Signal Processing & Sensing
| Crate | Description | RuVector Integration | crates.io |
|---|---|---|---|
wifi-densepose-signal |
SOTA CSI signal processing (6 algorithms from SpotFi, FarSense, Widar 3.0) | ruvector-mincut, ruvector-attn-mincut, ruvector-attention, ruvector-solver |
|
wifi-densepose-vitals |
Vital sign extraction: breathing (6-30 BPM) and heart rate (40-120 BPM) | -- | |
wifi-densepose-wifiscan |
Multi-BSSID WiFi scanning for Windows-enhanced sensing | -- |
Neural Network & Training
| Crate | Description | RuVector Integration | crates.io |
|---|---|---|---|
wifi-densepose-nn |
Multi-backend inference (ONNX, PyTorch, Candle) with DensePose head (24 body parts) | -- | |
wifi-densepose-train |
Training pipeline with MM-Fi dataset, 114->56 subcarrier interpolation | All 5 crates |
Disaster Response
| Crate | Description | RuVector Integration | crates.io |
|---|---|---|---|
wifi-densepose-mat |
Mass Casualty Assessment Tool -- survivor detection, triage, multi-AP localization | ruvector-solver, ruvector-temporal-tensor |
Hardware & Deployment
| Crate | Description | crates.io |
|---|---|---|
wifi-densepose-hardware |
ESP32, Intel 5300, Atheros CSI sensor interfaces (pure Rust, no FFI) | |
wifi-densepose-wasm |
WebAssembly bindings for browser-based disaster dashboard | |
wifi-densepose-sensing-server |
Axum server: ESP32 UDP ingestion, WebSocket broadcast, sensing UI |
Applications
| Crate | Description | crates.io |
|---|---|---|
wifi-densepose-api |
REST + WebSocket API layer | |
wifi-densepose-cli |
Command-line tool for MAT disaster scanning |
Architecture
wifi-densepose-core
(types, traits, errors)
|
+-------------------+-------------------+
| | |
wifi-densepose-signal wifi-densepose-nn wifi-densepose-hardware
(CSI processing) (inference) (ESP32, Intel 5300)
+ ruvector-mincut + ONNX Runtime |
+ ruvector-attn-mincut + PyTorch (tch) wifi-densepose-vitals
+ ruvector-attention + Candle (breathing, heart rate)
+ ruvector-solver |
| | wifi-densepose-wifiscan
+--------+---------+ (BSSID scanning)
|
+------------+------------+
| |
wifi-densepose-train wifi-densepose-mat
(training pipeline) (disaster response)
+ ALL 5 ruvector + ruvector-solver
+ ruvector-temporal-tensor
|
+-----------------+-----------------+
| | |
wifi-densepose-api wifi-densepose-wasm wifi-densepose-cli
(REST/WS) (browser WASM) (CLI tool)
|
wifi-densepose-sensing-server
(Axum + WebSocket)
RuVector Integration
All RuVector crates at v2.0.4 from crates.io:
| RuVector Crate | Used In | Purpose |
|---|---|---|
ruvector-mincut |
signal, train | Dynamic min-cut for subcarrier selection & person matching |
ruvector-attn-mincut |
signal, train | Attention-weighted min-cut for antenna gating & spectrograms |
ruvector-temporal-tensor |
train, mat | Tiered temporal compression (4-10x memory reduction) |
ruvector-solver |
signal, train, mat | Sparse Neumann solver for interpolation & triangulation |
ruvector-attention |
signal, train | Scaled dot-product attention for spatial features & BVP |
Signal Processing Algorithms
Six state-of-the-art algorithms implemented in wifi-densepose-signal:
| Algorithm | Paper | Year | Module |
|---|---|---|---|
| Conjugate Multiplication | SpotFi (SIGCOMM) | 2015 | csi_ratio.rs |
| Hampel Filter | WiGest | 2015 | hampel.rs |
| Fresnel Zone Model | FarSense (MobiCom) | 2019 | fresnel.rs |
| CSI Spectrogram | Standard STFT | 2018+ | spectrogram.rs |
| Subcarrier Selection | WiDance (MobiCom) | 2017 | subcarrier_selection.rs |
| Body Velocity Profile | Widar 3.0 (MobiSys) | 2019 | bvp.rs |
Quick Start
As a Library
use wifi_densepose_core::{CsiFrame, CsiMetadata, SignalProcessor};
use wifi_densepose_signal::{CsiProcessor, CsiProcessorConfig};
// Configure the CSI processor
let config = CsiProcessorConfig::default();
let processor = CsiProcessor::new(config);
// Process a CSI frame
let frame = CsiFrame { /* ... */ };
let processed = processor.process(&frame)?;
Vital Sign Monitoring
use wifi_densepose_vitals::{
CsiVitalPreprocessor, BreathingExtractor, HeartRateExtractor,
VitalAnomalyDetector,
};
let mut preprocessor = CsiVitalPreprocessor::new(56); // 56 subcarriers
let mut breathing = BreathingExtractor::new(100.0); // 100 Hz sample rate
let mut heartrate = HeartRateExtractor::new(100.0);
// Feed CSI frames and extract vitals
for frame in csi_stream {
let residuals = preprocessor.update(&frame.amplitudes);
if let Some(bpm) = breathing.push_residuals(&residuals) {
println!("Breathing: {:.1} BPM", bpm);
}
}
Disaster Response (MAT)
use wifi_densepose_mat::{DisasterResponse, DisasterConfig, DisasterType};
let config = DisasterConfig {
disaster_type: DisasterType::Earthquake,
max_scan_zones: 16,
..Default::default()
};
let mut responder = DisasterResponse::new(config);
responder.add_scan_zone(zone)?;
responder.start_continuous_scan().await?;
Hardware (ESP32)
use wifi_densepose_hardware::{Esp32CsiParser, CsiFrame};
let parser = Esp32CsiParser::new();
let raw_bytes: &[u8] = /* UDP packet from ESP32 */;
let frame: CsiFrame = parser.parse(raw_bytes)?;
println!("RSSI: {} dBm, {} subcarriers", frame.metadata.rssi, frame.subcarriers.len());
Training
# Check training crate (no GPU needed)
cargo check -p wifi-densepose-train --no-default-features
# Run training with GPU (requires tch/libtorch)
cargo run -p wifi-densepose-train --features tch-backend --bin train -- \
--config training.toml --dataset /path/to/mmfi
# Verify deterministic training proof
cargo run -p wifi-densepose-train --features tch-backend --bin verify-training
Building
# Clone the repository
git clone https://github.com/ruvnet/wifi-densepose.git
cd wifi-densepose/v2
# Check workspace (no GPU dependencies)
cargo check --workspace --no-default-features
# Run all tests
cargo test --workspace --no-default-features
# Build release
cargo build --release --workspace
Feature Flags
| Crate | Feature | Description |
|---|---|---|
wifi-densepose-nn |
onnx (default) |
ONNX Runtime backend |
wifi-densepose-nn |
tch-backend |
PyTorch (libtorch) backend |
wifi-densepose-nn |
candle-backend |
Candle (pure Rust) backend |
wifi-densepose-nn |
cuda |
CUDA GPU acceleration |
wifi-densepose-train |
tch-backend |
Enable GPU training modules |
wifi-densepose-mat |
ruvector (default) |
RuVector graph algorithms |
wifi-densepose-mat |
api (default) |
REST + WebSocket API |
wifi-densepose-mat |
distributed |
Multi-node coordination |
wifi-densepose-mat |
drone |
Drone-mounted scanning |
wifi-densepose-hardware |
esp32 |
ESP32 protocol support |
wifi-densepose-hardware |
intel5300 |
Intel 5300 CSI Tool |
wifi-densepose-hardware |
linux-wifi |
Linux commodity WiFi |
wifi-densepose-wifiscan |
wlanapi |
Windows WLAN API async scanning |
wifi-densepose-core |
serde |
Serialization support |
wifi-densepose-core |
async |
Async trait support |
Testing
# Unit tests (all crates)
cargo test --workspace --no-default-features
# Signal processing benchmarks
cargo bench -p wifi-densepose-signal
# Training benchmarks
cargo bench -p wifi-densepose-train --no-default-features
# Detection benchmarks
cargo bench -p wifi-densepose-mat
Supported Hardware
| Hardware | Crate Feature | CSI Subcarriers | Cost |
|---|---|---|---|
| ESP32-S3 Mesh (3-6 nodes) | hardware/esp32 |
52-56 | ~$54 |
| Intel 5300 NIC | hardware/intel5300 |
30 | ~$50 |
| Atheros AR9580 | hardware/linux-wifi |
56 | ~$100 |
| Any WiFi (Windows/Linux) | wifiscan |
RSSI-only | $0 |
Architecture Decision Records
Key design decisions documented in docs/adr/:
| ADR | Title | Status |
|---|---|---|
| ADR-014 | SOTA Signal Processing | Accepted |
| ADR-015 | MM-Fi + Wi-Pose Training Datasets | Accepted |
| ADR-016 | RuVector Training Pipeline | Accepted (Complete) |
| ADR-017 | RuVector Signal + MAT Integration | Accepted |
| ADR-021 | Vital Sign Detection Pipeline | Accepted |
| ADR-022 | Windows WiFi Enhanced Sensing | Accepted |
| ADR-024 | Contrastive CSI Embedding Model | Accepted |
Related Projects
- WiFi-DensePose -- Main repository (Python v1 + Rust v2)
- RuVector -- Graph algorithms for neural networks (5 crates, v2.0.4)
- rUv -- Creator and maintainer
License
All crates are dual-licensed under MIT OR Apache-2.0.
Copyright (c) 2024 rUv