Pith Number

pith:S3Z7IVCM

pith:2026:S3Z7IVCMA62XYHDWISUX7LQBDU

not attested not anchored not stored refs resolved

Grouped Annulus-Modulated Transceiver Is Almost Full DoF-Achieving for RIS-Assisted Symbiotic Radios Over Spatial-Correlated Channels

Jianfeng Shi, Kang An, Kang Luo, Mingliang Xie, Ru-Han Chen, Ruo-Qi Sun, Yifu Sun, Yonggang Zhu

A grouped annulus-modulated transceiver with matrix decomposition achieves full degrees of freedom in RIS-assisted symbiotic radios over spatially correlated channels.

arxiv:2605.13001 v1 · 2026-05-13 · cs.IT · math.IT

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Record completeness

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2 Internet Archive

3 Author claim open · sign in to claim

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

the proposed transceiver achieves the full degrees of freedom (DoFs) when the decomposition algorithm performs as expected

C2weakest assumption

the novel matrix decomposition algorithm transforms the equivalent channel into a structured form while effectively suppressing the decomposition residual

C3one line summary

A grouped annulus modulation scheme with hexagonal-lattice constellation for RIS symbiotic radios achieves nearly full DoF over spatially correlated channels via a structured matrix decomposition algorithm.

References

38 extracted · 38 resolved · 0 Pith anchors

[1] Reconfigurable intelligent surfaces for 6G: Emerging hardware architectures, applications, and open challenges, 2024

[2] Intelligent reflecting surface-aided wireless communications: A tutorial, 2021

[3] Intelligent reflecting surface enhanced wireless network via joint active and passive beamforming, 2019

[4] Joint RIS and beamforming design for secure and energy-efficient two-way relay communications, 2025

[5] Joint active and passive beamforming with sensing-assisted discrete phase shifts for dual-RIS ISAC systems, 2026

Formal links

2 machine-checked theorem links

Receipt and verification

First computed	2026-05-18T03:09:00.416554Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

96f3f4544c07b57c1c7644a97fae011d331228800f3a85b5b33b4dda19af840e

Aliases

arxiv: 2605.13001 · arxiv_version: 2605.13001v1 · doi: 10.48550/arxiv.2605.13001 · pith_short_12: S3Z7IVCMA62X · pith_short_16: S3Z7IVCMA62XYHDW · pith_short_8: S3Z7IVCM

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/S3Z7IVCMA62XYHDWISUX7LQBDU \
  | 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: 96f3f4544c07b57c1c7644a97fae011d331228800f3a85b5b33b4dda19af840e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "670eee248c51e9dcea0e23e2f8baae2d8ef5998273bf1bd3f604d5353e363273",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2026-05-13T04:56:47Z",
    "title_canon_sha256": "21a44712de5b29d5e27e19b35d9924ef22bfdfa5c90458fa29e8a1e792096cdf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.13001",
    "kind": "arxiv",
    "version": 1
  }
}