r4w CLAUDE.md

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project Overview

R4W - Rust for Waveforms - A platform for developing, testing, and deploying SDR waveforms in Rust. Provides reusable DSP libraries, educational tools, and production-ready components for waveform development.

Architecture

• r4w-core: Core DSP algorithms, timing, RT primitives, configuration
  • waveform/: 42+ waveform implementations (including GNSS: GPS L1 C/A, GPS L5, GLONASS L1OF, Galileo E1)
  • waveform/gnss/environment/: Keplerian orbits, Klobuchar ionosphere, Saastamoinen troposphere, multipath presets, antenna patterns
  • waveform/gnss/scenario*.rs: Multi-satellite GNSS IQ scenario generation with realistic channel effects
  • coordinates.rs: ECEF/LLA coordinate types, geodetic conversions, look angles, range rate, FSPL
  • filters/: Digital filters with trait-based architecture
    • traits.rs: Filter, RealFilter, FirFilterOps, FrequencyResponse traits
    • fir.rs: FirFilter with lowpass/highpass/bandpass/bandstop, Kaiser window design
    • iir.rs: IirFilter with Butterworth, Chebyshev I/II, Bessel via cascaded biquads
    • polyphase.rs: PolyphaseDecimator, PolyphaseInterpolator, Resampler, HalfbandFilter
    • remez.rs: Parks-McClellan equiripple FIR design (RemezSpec builder)
    • pulse_shaping.rs: RRC, RC, Gaussian filters (also implement Filter traits)
    • windows.rs: Hamming, Hann, Blackman, Kaiser window functions
  • agc.rs: Automatic Gain Control (Agc, Agc2, Agc3 - basic/dual-rate/fast-acquisition)
  • carrier_recovery.rs: Costas loop for BPSK/QPSK/8PSK carrier recovery
  • clock_recovery.rs: Mueller & Muller symbol timing recovery, FreqXlatingFirFilter
  • crc.rs: CRC engine (CRC-8, CRC-16 CCITT/IBM, CRC-32, CRC-32C) with table lookup
  • equalizer.rs: Adaptive equalizer (LMS, CMA, Decision-Directed) with Filter trait
  • signal_source.rs: Signal generator (Tone, TwoTone, Chirp, Noise, Square, DC, Impulse)
  • squelch.rs: Power squelch gate with ramp transitions (equiv. to GNU Radio pwr_squelch_cc)
  • ofdm.rs: OFDM modulator/demodulator (WiFi-like, DVB-T 2K, simple configs)
  • pfb_channelizer.rs: Polyphase filter bank channelizer with windowed-sinc prototype filter
  • correlator.rs: Cross-correlation sync word detector (Barker codes, dynamic threshold, holdoff)
  • scrambler.rs: LFSR scrambler/descrambler (additive/multiplicative, WiFi/DVB-S2/Bluetooth/V.34)
  • differential.rs: Differential encoder/decoder (DBPSK/DQPSK/D8PSK, complex-domain DPSK)
  • packet_framing.rs: Packet formatter/parser (sync word, headers, CRC, AX.25/ISM configs)
  • nco.rs: NCO/VCO + FM modulator/demodulator (PLL building block, frequency translation)
  • snr_estimator.rs: SNR estimation (M2M4, split-spectrum, signal+noise, EVM methods)
  • symbol_mapping.rs: Constellation mapper/demapper (BPSK/QPSK/8PSK/16QAM/64QAM, soft LLR)
  • probe.rs: Measurement probes (Power/PAPR, EVM, constellation scatter, freq offset, rate)
  • pll.rs: Second-order PLL, DC blocker (IIR highpass), sample delay (circular buffer)
  • costas_loop.rs: Costas loop carrier recovery (BPSK/QPSK/8PSK decision-directed)
  • constellation_receiver.rs: Combined AGC + Costas + symbol demapper receiver
  • goertzel.rs: Goertzel single-frequency DFT + MultiGoertzel + DTMF detector
  • burst_detector.rs: Power-based burst detector with hysteresis (SOB/EOB events)
  • noise.rs: Colored noise generator (white/pink/brown/blue/violet) + AWGN helpers
  • stream_tags.rs: Metadata propagation (TagStore, TagValue, range queries, well-known keys)
  • filters/cic.rs: CIC decimator/interpolator for high-ratio sample rate conversion
  • filters/adaptive.rs: Adaptive filters (LMS, NLMS, RLS) for equalization/cancellation
  • filters/fractional_resampler.rs: MMSE interpolating resampler for arbitrary rate conversion
  • freq_xlating_fir.rs: Frequency-translating FIR filter (mixing + FIR + decimation)
  • fm_emphasis.rs: FM pre-emphasis/de-emphasis (US 75us / EU 50us, 1-pole IIR)
  • quadrature_demod.rs: FM discriminator y[n] = gain * arg(x[n] * conj(x[n-1]))
  • access_code_detector.rs: Bit-level sync word detector with Hamming distance threshold
  • fll_band_edge.rs: FLL band-edge coarse frequency sync (band-edge FIR + 2nd-order loop)
  • type_conversions.rs: Complex/Real converters (Mag, MagSq, Arg, Real, Imag, MagPhase)
  • stream_control.rs: Head (first N), SkipHead (drop N), Throttle (rate-limit)
  • log_power_fft.rs: Windowed FFT to dB power with exponential averaging
  • pdu.rs: PDU↔tagged stream conversion, message debug (Hex/Text/Decimal/Summary)
  • ofdm_channel_est.rs: OFDM pilot-based channel estimation (LS/smoothed), ZF/MMSE equalization
  • ssb_modem.rs: SSB modulator/demodulator (Hilbert transform phasing method, BFO)
  • wavelet.rs: DWT analysis/synthesis (Haar/Db4/Sym4), soft/hard threshold denoising
  • cpm.rs: CPM/GMSK/GFSK/MSK modulation (constant-envelope, Gaussian/LRC pulse shapes)
  • dynamic_channel.rs: Composite time-varying channel (fading + CFO/SRO drift + AWGN)
  • burst_tagger.rs: Power-based burst detection, tagged stream mux/align
  • stream_to_streams.rs: Round-robin stream demux/mux (StreamToStreams, StreamsToStream), I/Q deinterleave
  • argmax.rs: Index-of-max (argmax/argmin for f64 and mag_sqrd), ArgmaxBlock, top_k functions
  • threshold.rs: Hysteresis threshold detector, rising/falling edge detection, stateless comparison
  • pdu_filter.rs: PDU metadata filtering (FilterRule, PduFilter AND-logic, PduRouter first-match)
  • regenerate_bb.rs: Bit regeneration pulse stretcher, PulseGenerator, rect/trapezoidal pulses
  • patterned_interleaver.rs: Custom-pattern stream interleaving/deinterleaving of N streams (f64, bytes)
  • bitwise_ops.rs: XOR/AND/OR/NOT for byte and boolean streams, hamming_distance, popcount, parity
  • peak_hold.rs: Signal peak tracking with exponential decay (PeakHold, AbsPeakHold, PeakHoldDb)
  • multiply_matrix.rs: Complex and real matrix-vector multiplication (identity, scalar, diagonal, from_rows)
  • glfsr_source.rs: Galois and Fibonacci LFSR PN sequence generators (maximal-length polynomials 2-31 bits)
  • additive_scrambler.rs: LFSR-based stream scrambling (DVB x^15+x^14+1, WiFi x^7+x^4+1 presets, auto-reset)
  • stretch.rs: Signal normalization and range mapping (stretch, stretch_to_range, clip, StreamStretch)
  • nlog10.rs: Logarithmic scaling (to_db, from_db, to_dbm, from_dbm, power_to_db, iq_to_db)
  • dpll.rs: Second-order digital PLL with PI loop filter (Dpll carrier tracking, BinaryDpll clock recovery)
  • endian_swap.rs: Byte order conversion (16/32/64-bit swap, typed swap_i16/u16/i32/u32/f32/f64, reverse_bits)
  • iq_balance.rs: IQ imbalance estimation/correction (IqBalanceCorrector fixed gain/phase, AdaptiveIqBalance LMS-based online)
  • peak_to_average.rs: PAPR/crest factor measurement (papr_db, papr_db_complex, crest_factor, PaprEstimator streaming windowed)
  • correlate_estimate.rs: Time-domain cross-correlation (cross_correlate, cross_correlate_complex, find_delay, autocorrelate, correlation_coefficient)
  • bin_statistics.rs: Per-FFT-bin statistical accumulation (BinStatistics min/max/mean/variance, accumulate_max_hold, dynamic_range)
  • check_lfsr.rs: LFSR sequence verification for BER testing (LfsrChecker, synchronize offset detection, generate_reference, cumulative BER)
  • timing_error_detector.rs: Gardner, Mueller-Muller, Early-Late Gate, Zero-Crossing TEDs for clock recovery (real/complex, streaming TimingErrorDetector block)
  • cma_equalizer.rs: Constant Modulus Algorithm blind equalizer (CMA-2-2, CMA-1-2, RCA variants), Godard cost function, dispersion constant computation, QPSK/16-QAM presets
  • pdu_to_tagged_stream.rs: PDU to tagged stream converter (reverse of tagged_stream_to_pdu), queue-based with drain/drain_one/drain_limited, max queue depth, roundtrip support
  • vector_quantizer.rs: Vector quantization codebook encoder/decoder, Euclidean/Manhattan/EuclideanSquared metrics, k-means codebook training, uniform scalar codebook generation
  • frequency_xlating_fft_filter.rs: Frequency-translating FFT filter with NCO mixing, overlap-save FFT convolution, decimation, windowed-sinc lowpass design (Hamming window)
  • constellation_demapper.rs: Soft bit demapping via max-log-MAP (BPSK/QPSK fast-path, generic ConstellationDemapper for arbitrary constellations, hard/soft output)
  • eye_diagram.rs: Eye diagram generator with trace accumulation (mean_trace, envelope, eye_opening, timing_jitter_rms for ISI assessment)
  • evm_calculator.rs: Error Vector Magnitude measurement (RMS/peak/percentile EVM in linear/dB/percent, streaming EvmCalculator with history)
  • valve.rs: Stream gating and flow control (Open/Closed/CountedBurst/Triggered modes, gate_signal, extract_segments)
  • pfb_arb_resampler.rs: Polyphase filterbank arbitrary resampler (linear interpolation between branches, Blackman-Harris prototype, derivative filters)
  • cyclic_autocorrelation.rs: Cyclostationary signal analysis (cyclic autocorrelation, spectral correlation, feature detection, modulation classification)
  • random_pdu_gen.rs: Random PDU test traffic generator (Poisson/Uniform/Fixed inter-arrival, seeded LCG PRNG, traffic statistics)
  • mmse_interpolator.rs: 8-tap MMSE FIR fractional delay (128-step mu quantization, windowed-sinc with Nuttall window, cubic/linear helpers)
  • fractional_delay.rs: Thiran all-pass IIR and Lagrange FIR fractional sample delay (maximally flat group delay)
  • linear_equalizer.rs: Adaptive FIR equalizer (LMS, RLS, CMA, Kurtotic algorithms, training/decision-directed modes)
  • trellis_coding.rs: FSM-based trellis encoder + Viterbi decoder for TCM and convolutional codes
  • protocol_formatter.rs: Pluggable HeaderFormat trait, DefaultHeaderFormat (access code + repeated length + CRC), CounterHeaderFormat
  • ctcss_squelch.rs: CTCSS sub-audible tone encoder/decoder for FM repeater access (Goertzel detection, 38 standard EIA/TIA tones)
  • ofdm_frame_equalizer.rs: Per-subcarrier ZF/MMSE equalization with pilot-based channel estimation, linear interpolation
  • power_amplifier_model.rs: Nonlinear PA behavioral models (Saleh, Rapp, Ghorbani, polynomial, limiter) with AM/AM, AM/PM distortion, P1dB compression point
  • power_amplifier_dpd.rs: Digital Pre-Distortion with memory polynomial, LMS/RLS indirect learning architecture, NMSE metric
  • median_filter.rs: Sliding-window median filter with dual-heap O(log n), complex/weighted variants, 2D hybrid median for spectrogram denoising
  • cordic.rs: CORDIC rotator for sin/cos, atan2, polar/rect conversions, NCO, hardware-efficient iterative algorithm using shifts and adds
  • tagged_file_sink.rs: Stream-tag-triggered IQ file segmentation for burst recording
  • cfar.rs: CFAR detector (CA-CFAR, GO-CFAR, SO-CFAR, OS-CFAR) for 1D power data, Cfar2D for range-Doppler maps
  • chirp_z_transform.rs: Chirp-Z Transform (Bluestein's algorithm), zoom_fft for high-resolution spectral analysis
  • permute.rs: Vector index permutation with validation, inverse/compose/bit-reversal, StreamPermuter block-mode
  • noise_reduction.rs: Spectral subtraction and Wiener noise reduction with MMSE filtering
  • savitzky_golay.rs: Savitzky-Golay polynomial smoothing and differentiation filter with cached coefficients
  • sigma_delta.rs: Sigma-delta modulator/demodulator with error-feedback (EFB) structure, 1st/2nd/3rd order, multi-bit quantizer, CIC sinc³ decimation filter, theoretical SNR computation, NTF magnitude
  • farrow_resampler.rs: Farrow polynomial structure for continuously variable fractional resampling, linear/quadratic/cubic interpolation via Horner evaluation, variable ratio on-the-fly, resample_to_length utility
  • empirical_mode.rs: Empirical Mode Decomposition (EMD) via sifting process + Hilbert-Huang Transform, extracts IMFs (Intrinsic Mode Functions) from non-stationary signals, cubic spline envelope interpolation, instantaneous frequency/amplitude
  • ambiguity_function.rs: Radar waveform delay-Doppler analysis, full 2D ambiguity surface |χ(τ,ν)|², zero-Doppler and zero-delay cuts, LFM chirp and Barker code generators, mainlobe width measurement, complex signal support
  • pulse_compressor.rs: Matched filtering for radar (LFM chirp/Barker/polyphase code references), Hamming/Chebyshev/Taylor sidelobe windows, time-domain and FFT-domain processing, processing gain, range resolution
  • mti_filter.rs: Moving Target Indication/Detection for pulsed radar (single/double/triple cancellers, binomial weights, custom FIR slow-time filters, DopplerFilterBank for MTD with windowing, blind speed calculation, frequency response)
  • fountain_code.rs: Luby Transform rateless erasure codes (ideal/robust soliton degree distributions, belief propagation peeling decoder, streaming encode/decode, deterministic PRNG)
  • cross_ambiguity_function.rs: Passive bistatic radar CAF (direct and batched correlation, LMS/NLMS/ECA-B direct-path interference cancellation, target detection with SNR estimation, bistatic range conversion)
  • feedforward_timing_estimator.rs: Non-data-aided burst-mode timing recovery (Oerder-Meyr spectral line, M-th power, squaring, Gardner feedforward algorithms, linear/cubic/Farrow/sinc interpolation)
  • adaptive_modcod.rs: Adaptive Modulation and Coding link adaptation (DVB-S2 ACM 28-entry modcod table, LTE CQI 15 entries, Wi-Fi MCS 10 entries, MaxThroughput/MaxReliability/TargetEfficiency strategies, hysteresis/EMA SNR averaging/backoff margin)
  • mimo_detector.rs: MIMO detection algorithms (Schnorr-Euchner sphere decoder, K-best tree search, exhaustive ML, MMSE-SIC, QR decomposition, soft LLR output, ConstellationSet QPSK/16QAM/64QAM/256QAM)
  • doppler_pre_correction.rs: Satellite Doppler pre-compensation (Constant/LinearRamp/Polynomial/Tabulated profiles, phase-continuous NCO, Doppler rate computation, LEO satellite comms/deep-space links)
  • cognitive_engine.rs: Dynamic spectrum access decision engine (OODA loop IEEE 802.22, Greedy/EpsilonGreedy/UCB1/ThompsonSampling strategies, SpectrumBand with BandPriority/RegulatoryStatus, PU detection/handoff/vacancy prediction)
  • raptor_code.rs: RaptorQ erasure codes RFC 6330 (systematic rateless LDPC+HDPC pre-coding over LT, near-zero reception overhead, 3GPP MBMS/ATSC 3.0/DVB-H, belief propagation peeling decoder)
  • polar_code.rs: Arikan's 5G NR polar codes (PolarEncoder butterfly transform, PolarDecoder recursive SC decoding, Bhattacharyya channel reliability ordering)
  • msk_modulator.rs: MSK (Minimum Shift Keying, h=0.5 continuous-phase FSK) modulator/demodulator, GMSK variant with configurable BT product Gaussian pre-filter, phase-accumulation demod (GSM, satellite)
  • oqpsk_modulator.rs: Offset QPSK modulator/demodulator (Q delayed by T/2, +-pi/2 phase transitions, PAPR analysis, ZigBee 802.15.4, CDMA IS-95)
  • frequency_hopping.rs: FHSS controller (Pseudorandom/Sequential/Fixed/Adaptive hop patterns, Bluetooth 79ch/1600hps and military HF presets, processing gain)
  • link16_jtids_processor.rs: Link 16/JTIDS physical layer (MIL-STD-6016, educational only): GF(2^5) arithmetic, RS(31,15) encoder/decoder (BM+Chien+Forney), 32-chip CCSK modulator/demodulator, LFSR frequency hop sequence (51 hops 969-1206 MHz), symbol interleaver, TDMA slot framer (128 slots/epoch), J-series/PPLI message formatter, MSK baseband, RF link budget with jam margin
  • dect_processor.rs: DECT (Digital Enhanced Cordless Telecommunications) physical layer per ETSI EN 300 175: GFSK modem (BT=0.5, 1.152 Mbit/s, h=0.5, Gaussian pre-filter), TDMA/TDD 10ms frame (24 slots, FP TX slots 0-11 / PP TX slots 12-23), CRC-8 A-field (64 bits), B-field (320 bits), 17-bit LFSR scrambler (x^17+x^14+1), preamble/sync word detection (FP: 0xE98A77CE, PP: 0x16758831), RSSI-based channel selection (Europe 1880-1900 MHz / US 1920-1930 MHz), DECT-2020/NR+ (pi/2-BPSK, pi/4-QPSK, 16-QAM, 64-QAM, OFDM, HARQ Chase combining), 62 tests
  • digital_down_converter.rs: DDC with NCO mixer, 3-stage CIC decimation, windowed-sinc FIR compensation filter, retuning, reset
  • digital_up_converter.rs: DUC with CIC interpolation, FIR compensation filter, NCO mixer for baseband-to-IF upconversion
  • sigma_delta_modulator.rs: Sigma-delta modulation/demodulation for ADC/DAC, configurable order (1st-3rd), oversampling ratio
  • reed_solomon.rs: Reed-Solomon codec over GF(2^8), generator polynomial 0x11D, configurable t-symbol error correction
  • fmcw_radar.rs: FMCW radar processor with chirp generation, beat frequency mixing, range/Doppler FFT processing, range-Doppler map, automotive 77 GHz preset
  • viterbi_decoder.rs: Convolutional encoder (rate 1/n) with hard/soft Viterbi decoding, traceback, NASA k=7 and GSM k=5 presets
  • esprit.rs: ESPRIT DOA estimation (LS/TLS variants, ULA steering vectors, complements MUSIC DOA)
  • convolutional_interleaver.rs: Forney-type convolutional interleaver/deinterleaver (DVB-S2 I=12/M=17, GSM I=4/M=19 presets, burst error dispersal)
  • unscented_kalman_filter.rs: Unscented Kalman Filter with UkfModel trait, sigma point generation, predict/update cycle, NEES metric
  • sar_processor.rs: SAR Range-Doppler Algorithm (range compression, RCMC, azimuth compression, point target generation, Doppler centroid estimation)
  • wola_channelizer.rs: Weighted Overlap-Add analysis/synthesis filterbank (Hann/Hamming/Blackman/Kaiser windows, channel frequency response)
  • dynamic_range_compressor.rs: Compressor/limiter/expander/noise gate with attack/release envelope follower, soft knee, RMS/peak detection, makeup gain, static compression curve for visualization
  • teager_kaiser_energy.rs: Teager-Kaiser Energy Operator (TKEO) instantaneous energy, AM/FM demodulation via TKEO, streaming processor, transient detection
  • wigner_ville_distribution.rs: WVD/PWVD/SPWVD time-frequency analysis, analytic signal, instantaneous frequency extraction, 2D time-frequency surface with marginals
  • lattice_filter.rs: Lattice and lattice-ladder filter structures, Levinson-Durbin recursion, Burg's method for AR estimation, PARCOR coefficients, LSF
  • prony_method.rs: Prony's method for parametric exponential signal modeling, matrix pencil method, companion matrix eigenvalue solver, MDL order estimation, parametric PSD
  • cepstral_analysis.rs: Real/power/complex cepstrum, pitch detection, homomorphic filtering (source-filter separation), MFCCs, mel filterbank, spectral envelope
  • blind_source_separation.rs: FastICA with deflation, PCA whitening, 3 nonlinearities (LogCosh, Exp, Cube), kurtosis, negentropy, correlation metrics
  • phase_vocoder.rs: STFT-based time-stretch, pitch-shift, spectrogram, robotize, whisperize effects with overlap-add synthesis
  • compressive_sensing.rs: OMP (greedy), ISTA/FISTA (proximal gradient) sparse recovery from underdetermined systems, random/DCT sensing matrices, RIP constant estimation
  • zero_crossing_detector.rs: ZCR computation, frequency estimation, ZcrAnalyzer with energy, VoiceActivityDetector (energy+ZCR with hangover), spectral centroid/flatness, modulation classification
  • subspace_tracker.rs: PAST/OPAST adaptive rank-d subspace tracking, projection, projection error, dimension estimation, subspace angle
  • cic_filter.rs: CIC decimation/interpolation without multiplications, passband compensator FIR design
  • overlap_save.rs: Overlap-Save and Overlap-Add streaming FFT block convolution, direct convolution reference
  • lms_filter.rs: Standard LMS, Normalized LMS (NLMS), Leaky LMS adaptive filters for system identification and noise cancellation
  • stft.rs: Short-Time Fourier Transform with configurable windows (Hann/Hamming/Blackman), Inverse STFT with OLA perfect reconstruction, COLA constraint checking
  • music_doa.rs: MUSIC direction-of-arrival estimation with Hermitian eigendecomposition (augmented real form + Jacobi), MDL/AIC source enumeration, test snapshot generation
  • rake_receiver.rs: RAKE multipath combining for DSSS/CDMA (MRC, equal-gain, selection diversity), finger management, delay estimation
  • modulation_classifier.rs: Automatic modulation classification via higher-order cumulants (C20/C40/C42), kurtosis, sigma_af feature extraction
  • tdoa_estimator.rs: Time Difference of Arrival geolocation with GCC-PHAT cross-correlation, iterative least-squares solver
  • fm_stereo_decoder.rs: FM stereo multiplex decoder with 19 kHz pilot PLL, 38 kHz DSB-SC demodulation, de-emphasis filter
  • phase_noise_model.rs: Oscillator phase noise synthesis from L(f) PSD masks and Leeson model, configurable noise floor and corner frequencies
  • ofdm_sync_schmidl_cox.rs: Schmidl-Cox OFDM symbol timing and coarse/fine CFO estimation (delayed autocorrelation, timing metric M(d), preamble generator)
  • ofdm_carrier_allocator.rs: OFDM subcarrier mapping (CarrierAllocator TX, CarrierSerializer RX), WiFi 802.11a and LTE presets, guard bands, DC null, pilot insertion
  • trellis_metrics.rs: Branch metric computation for trellis-based decoding (Euclidean, squared Euclidean, Manhattan, Hamming, ViterbiCombined, metrics_to_llr)
  • link_budget.rs: RF link budget calculator (builder pattern, FSPL, cascaded NF via Friis, thermal noise floor, max range estimation)
  • fec_generic_api.rs: Unified FEC framework (GenericEncoder/GenericDecoder traits, streaming FecEncoderBlock/FecDecoderBlock, AsyncFecEncoder/AsyncFecDecoder, FecCodecRegistry, built-in Repetition and ParityCheck codecs)
  • fec/: Forward Error Correction
    • convolutional.rs: Convolutional encoder + Viterbi decoder (hard/soft decision)
    • reed_solomon.rs: RS encoder/decoder over GF(2^8) (CCSDS, DVB, custom configs)
    • polar.rs: Polar code encoder/decoder (5G NR, SC/SCL algorithm, Bhattacharyya construction)
    • Standard codes: NASA K=7 rate 1/2, GSM K=5, 3GPP K=9 rate 1/3
  • analysis/: Spectrum analyzer, waterfall generator, signal statistics, peak detection
  • timing.rs: Multi-clock model (SampleClock, WallClock, HardwareClock, SyncedTime)
  • rt/: Lock-free ring buffers, buffer pools, RT thread spawning
  • config.rs: YAML-based configuration system
• r4w-sim: SDR simulation, HAL traits, channel models
  • hal/: StreamHandle, TunerControl, ClockControl, SdrDeviceExt traits
  • channel.rs: AWGN, Rayleigh, Rician, CFO, TDL multipath (EPA/EVA/ETU), Jake's Doppler
  • doppler.rs: Jake's/Clarke's, Flat, and Gaussian Doppler models
  • scenario/: Generic multi-emitter IQ scenario engine (trajectory, emitter trait, Doppler/FSPL/noise)
  • simulator.rs: Software SDR simulator
• r4w-fpga: FPGA acceleration (Xilinx Zynq, Lattice iCE40/ECP5)
• r4w-sandbox: Waveform isolation (8 security levels)
• r4w-gui: Educational egui application (run with cargo run --bin r4w-explorer)
  • views/pipeline_wizard.rs: Visual pipeline builder with 724+ blocks in 11 categories (incl. GNSS), TX/RX/Channel loading, type-aware test panel
  • views/block_metadata.rs: Block documentation, formulas, code links, tests, performance info
• r4w-cli: Command-line interface (run with cargo run --bin r4w)
• r4w-web: WebAssembly entry point for browser deployment