Pith Number

pith:SJXT5VXT

pith:2026:SJXT5VXTAIPRUWSKACMS2RUSNS

not attested not anchored not stored refs resolved

Decoding Product Codes and Staircase Codes with Iteration-Independent Weighting Coefficients

Andreas Stra{\ss}hofer

Improved decoder for product and staircase codes uses fixed weighting coefficients to gain 0.23 dB over Chase-Pyndiah

arxiv:2605.13201 v1 · 2026-05-13 · cs.IT · math.IT

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\pithnumber{SJXT5VXTAIPRUWSKACMS2RUSNS}

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Record completeness

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2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications 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

presents an improved FEC decoder design outperforming Chase-Pyndiah decoding of product codes by 0.23 dB. To achieve this, the decoder does not require iteration-dependent coefficients, making it implementation-friendly for sliding-window decoding of staircase codes.

C2weakest assumption

That fixed weighting coefficients chosen once can maintain or exceed the performance of iteration-dependent coefficients across all decoding rounds and channel conditions without additional tuning.

C3one line summary

A product and staircase code decoder with iteration-independent weights outperforms Chase-Pyndiah by 0.23 dB and suits sliding-window hardware.

References

6 extracted · 6 resolved · 0 Pith anchors

[1] Near-optimum decoding of product codes: Block turbo codes 1998

[2] Soft-output suc- cessive cancellation list decoding 2025 · doi:10.1109/tit.2024.3512412

[3] Soft- output (so) grand and iterative decoding to outperform ldpcs 2025 · doi:10.1109/twc

[4] Soft-output from covered space decoding of product codes 2025

[5] List decoding of polar codes 2015 · doi:10.1109/tit.2015.2410251

Receipt and verification

First computed	2026-05-18T03:08:48.664157Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

926f3ed6f3021f1a5a4a00992d46926c9e8873dc0cfc99960e7ade5dacb6ca69

Aliases

arxiv: 2605.13201 · arxiv_version: 2605.13201v1 · doi: 10.48550/arxiv.2605.13201 · pith_short_12: SJXT5VXTAIPR · pith_short_16: SJXT5VXTAIPRUWSK · pith_short_8: SJXT5VXT

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Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/SJXT5VXTAIPRUWSKACMS2RUSNS \
  | 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: 926f3ed6f3021f1a5a4a00992d46926c9e8873dc0cfc99960e7ade5dacb6ca69

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "63d44383eab86df88d9a290465cc323c834fe724705343ebe633c569226ede18",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2026-05-13T08:54:17Z",
    "title_canon_sha256": "65ac7664af379905726ceb3a84bc723e32408ee4ce217590ae3c73b6683df951"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.13201",
    "kind": "arxiv",
    "version": 1
  }
}