Pith Number

pith:EWMDB6AI

pith:2026:EWMDB6AIIG232C5VP37UAC7S7V

not attested not anchored not stored refs resolved

Cross-Harmonic Ambiguity-Aligned Multiport Parameter Estimation for Time-Floquet RIS

Philipp del Hougne

A segmented estimation method aligns per-harmonic ambiguities to build accurate proxy TF-MNT models for time-Floquet RIS from end-to-end measurements.

arxiv:2605.12806 v1 · 2026-05-12 · eess.SP · physics.app-ph

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Claims

C1strongest claim

The proposed segmented estimation approach with cross-harmonic ambiguity alignment constructs an accurate proxy TF-MNT model from end-to-end measurements, as quantified by full-wave numerical simulations and demonstrated via performance loss without alignment in a harmonic backscatter scenario.

C2weakest assumption

That the inherent ambiguities among the per-harmonic conventional proxy MNT parameters can be aligned using the three specified measurement setups with different access to phase and harmonic information.

C3one line summary

A cross-harmonic ambiguity alignment technique constructs accurate proxy TF-MNT models for time-Floquet RIS from end-to-end measurements, with simulation-based quantification of accuracy versus measurement count and noise.

References

16 extracted · 16 resolved · 1 Pith anchors

[1] End-to-end mutual coupling aware communication model for reconfigurable intelligent surfaces: An electromagnetic-compliant approach based on mutual impedances 2021

[2] Space-time-coding digital metasurfaces 2018

[3] Wireless communications with space–time modulated metasurfaces 2024

[4] Rapidly time-varying reconfigurable intelligent surfaces for downlink multiuser transmissions 2024

[5] A multifrequency system model for multiport time-modulated scatterers 2025

Receipt and verification

First computed	2026-05-18T03:09:12.603452Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

259830f80841b5bd0bb57eff400bf2fd43740763c89efeee5e8fe281d612f3da

Aliases

arxiv: 2605.12806 · arxiv_version: 2605.12806v1 · doi: 10.48550/arxiv.2605.12806 · pith_short_12: EWMDB6AIIG23 · pith_short_16: EWMDB6AIIG232C5V · pith_short_8: EWMDB6AI

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/EWMDB6AIIG232C5VP37UAC7S7V \
  | 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: 259830f80841b5bd0bb57eff400bf2fd43740763c89efeee5e8fe281d612f3da

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "016d57d616e84884e014efdfd0d5b497cd9eb5324570be18c3ebf9b733769f24",
    "cross_cats_sorted": [
      "physics.app-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2026-05-12T22:57:21Z",
    "title_canon_sha256": "ebbb5b51e1141ca471217e8b9ba9c925e5a31244fb69b1ef373828f7a506d62c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.12806",
    "kind": "arxiv",
    "version": 1
  }
}