Pith Number

pith:Q72YA664

pith:2026:Q72YA6646C52DRFHSABCRT5CN6

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Fundamental Performance Limits of Non-Coherent ISAC: A Data-Aided Sensing Perspective

Chengkai Zhao, Dongsheng Peng, Jun Chen, Ping Chen, Yihong Li, Zhiqing Wei

Data-aided sensing in non-coherent ISAC systems delivers a strict 3 dB effective SNR improvement at low SNR and faster distortion scaling at high SNR than pilot sensing.

arxiv:2605.16196 v1 · 2026-05-15 · cs.IT · math.IT

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Claims

C1strongest claim

For the DAS scheme, a closed-form asymptotic expression for the sensing distortion is derived by using random matrix theory (RMT). The asymptotic performance analysis explicitly quantifies the significant gains of the DAS scheme, revealing a strict 3 dB effective SNR improvement in the low-SNR regime and a strictly faster performance scaling rate in the high-SNR limit compared to the PS scheme.

C2weakest assumption

The analysis assumes unknown channel state information at the co-located sensing and communication receivers together with a block-fading channel model; if this non-coherent premise is relaxed or the receivers are not co-located, the claimed rate-distortion functions and asymptotic gains no longer apply directly.

C3one line summary

In non-coherent bistatic MIMO ISAC, data-aided sensing yields a strict 3 dB effective SNR improvement at low SNR and faster performance scaling at high SNR versus pilot sensing, via closed-form random matrix theory asymptotics.

References

28 extracted · 28 resolved · 0 Pith anchors

[1] Integrated sensing and communications: Toward dual-functional wireless networks for 6G and beyond, 2022

[2] A survey on fundamental limits of integrated sensing and communication, 2022

[3] Twelve scientific challenges for 6G: Rethinking the foundations of communications theory, 2023

[4] A vision of 6G wireless systems: Applications, trends, technologies, and open research problems, 2020

[5] Waveform design and signal processing aspects for fusion of wireless communications and radar sensing, 2011

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Receipt and verification

First computed	2026-05-20T00:01:57.498239Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87f5807bdcf0bba1c4a7900228cfa26f846cf0bfbdb3af8fe901c28d4ac20243

Aliases

arxiv: 2605.16196 · arxiv_version: 2605.16196v1 · doi: 10.48550/arxiv.2605.16196 · pith_short_12: Q72YA6646C52 · pith_short_16: Q72YA6646C52DRFH · pith_short_8: Q72YA664

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/Q72YA6646C52DRFHSABCRT5CN6 \
  | 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: 87f5807bdcf0bba1c4a7900228cfa26f846cf0bfbdb3af8fe901c28d4ac20243

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f24e1bc6a53a3d58cdcfed2b6228310f2e83e15b0f7041e8057e67f4c0a0fb76",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2026-05-15T17:11:50Z",
    "title_canon_sha256": "2560a944b0a00acba11a7256217beff12593cab90a764bc6c80a4a425684d6c2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.16196",
    "kind": "arxiv",
    "version": 1
  }
}