Pith Number

pith:ZUSAEPKY

pith:2026:ZUSAEPKYYF3XZMRJOFGRYDT32Y

not attested not anchored not stored refs pending

NL-COMM-Sat: Breaking the Direct Device-to-Satellite Communication Barrier via "Aggressive" Non-Orthogonal Transmissions and Non-Linear Processing

Chathura Jayawardena, Konstantinos Nikitopoulos

Aggressive non-orthogonal transmissions from multiple users combined with non-linear processing can double spectral efficiency in direct device-to-satellite links even with a single-antenna receiver.

arxiv:2604.24453 v3 · 2026-04-27 · eess.SP

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\usepackage{pith}
\pithnumber{ZUSAEPKYYF3XZMRJOFGRYDT32Y}

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Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

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

Our evaluation shows that NL-COMM-Sat achieves up to a 2x increase in spectral efficiency compared to orthogonal multiple access and NOMA baselines across all considered SNR and Doppler regimes, even with a single-antenna receiver and user speeds of up to 500 km/h.

C2weakest assumption

That the proposed computationally efficient non-linear processing schemes can be realized in real-time satellite hardware while maintaining the claimed gains under realistic channel estimation errors and high-mobility Doppler conditions.

C3one line summary

NL-COMM-Sat enables up to 2x higher spectral efficiency in direct device-to-satellite communications by supporting four or more concurrent non-orthogonal users per single-antenna receiver through aggressive transmissions and efficient non-linear processing, even at high Doppler and with channel-est.

Receipt and verification

First computed	2026-06-08T01:05:11.279797Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cd24023d58c1777cb229714d1c0e7bd629827ceaecf434e9b0b879fcf88c85f6

Aliases

arxiv: 2604.24453 · arxiv_version: 2604.24453v3 · doi: 10.48550/arxiv.2604.24453 · pith_short_12: ZUSAEPKYYF3X · pith_short_16: ZUSAEPKYYF3XZMRJ · pith_short_8: ZUSAEPKY

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/ZUSAEPKYYF3XZMRJOFGRYDT32Y \
  | 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: cd24023d58c1777cb229714d1c0e7bd629827ceaecf434e9b0b879fcf88c85f6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "98a3e27b807da9d2eec2d531e64bf10e51376efa3d631fa0509f0f371a63a2bf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2026-04-27T13:22:17Z",
    "title_canon_sha256": "36d2f813720b596156ee33dbd7a59139b0f2d68e5ad1653bd41fb64f0cb2a563"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2604.24453",
    "kind": "arxiv",
    "version": 3
  }
}