Pith Number

pith:D3QNHAMA

pith:2026:D3QNHAMAGNGWBQOE6YXLLD3LPU

not attested not anchored not stored refs pending

Soft-Coherent Direct Multipath SLAM

Benjamin J. B. Deutschmann, Erik Leitinger, Klaus Witrisal

A shared complex mean in the likelihood function enables coherent fusion for direct multipath SLAM in distributed MIMO systems.

arxiv:2604.19723 v3 · 2026-04-21 · eess.SP

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\pithnumber{D3QNHAMAGNGWBQOE6YXLLD3LPU}

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Record completeness

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4 Citations open

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The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Claims

C1strongest claim

Simulation results demonstrate performance gains over existing noncoherent methods and approach the corresponding posterior CRLB (PCRLB), highlighting the potential of coherent distributed arrays for high-resolution sensing and localization.

C2weakest assumption

Phase coherence is maintained across base stations or subarrays, enabling the shared complex mean in the likelihood function for coherent fusion.

C3one line summary

A scalable coherent MP-SLAM method uses a phase-preserving nonzero-mean Type-II likelihood with shared complex mean across arrays plus an SFV model to achieve robust localization and mapping directly from raw signals, outperforming noncoherent baselines in simulations.

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1 paper in Pith

Soft-Coherent Direct Multipath SLAM

Receipt and verification

First computed	2026-06-05T00:13:46.410861Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1ee0d38180334d60c1c4f62eb58f6b7d2ffc4c67706bf36721f75afc392b7b15

Aliases

arxiv: 2604.19723 · arxiv_version: 2604.19723v3 · doi: 10.48550/arxiv.2604.19723 · pith_short_12: D3QNHAMAGNGW · pith_short_16: D3QNHAMAGNGWBQOE · pith_short_8: D3QNHAMA

Agent API

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/D3QNHAMAGNGWBQOE6YXLLD3LPU \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 1ee0d38180334d60c1c4f62eb58f6b7d2ffc4c67706bf36721f75afc392b7b15

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f402f7203ffbed630fb9bcd5ced682d32552465c7f9e559cd732553694187b90",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2026-04-21T17:48:45Z",
    "title_canon_sha256": "702849e34938410ce6c73c9b02f7c7080af0942668c7910029e44c7b748b69e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.19723",
    "kind": "arxiv",
    "version": 3
  }
}