{"paper":{"title":"Decoding Product Codes and Staircase Codes with Iteration-Independent Weighting Coefficients","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"Improved decoder for product and staircase codes uses fixed weighting coefficients to gain 0.23 dB over Chase-Pyndiah","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Andreas Stra{\\ss}hofer","submitted_at":"2026-05-13T08:54:17Z","abstract_excerpt":"This paper 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."},"claims":{"count":4,"items":[{"kind":"strongest_claim","text":"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.","source":"verdict.strongest_claim","status":"machine_extracted","claim_id":"C1","attestation":"unclaimed"},{"kind":"weakest_assumption","text":"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.","source":"verdict.weakest_assumption","status":"machine_extracted","claim_id":"C2","attestation":"unclaimed"},{"kind":"one_line_summary","text":"A product and staircase code decoder with iteration-independent weights outperforms Chase-Pyndiah by 0.23 dB and suits sliding-window hardware.","source":"verdict.one_line_summary","status":"machine_extracted","claim_id":"C3","attestation":"unclaimed"},{"kind":"headline","text":"Improved decoder for product and staircase codes uses fixed weighting coefficients to gain 0.23 dB over Chase-Pyndiah","source":"verdict.pith_extraction.headline","status":"machine_extracted","claim_id":"C4","attestation":"unclaimed"}],"snapshot_sha256":"a28e00025e0f98310430316f3f1a41928fe86131f511f4d73d63fc1f46de300b"},"source":{"id":"2605.13201","kind":"arxiv","version":1},"verdict":{"id":"d65e2a35-14e0-4d4c-be18-6f88c337e611","model_set":{"reader":"grok-4.3"},"created_at":"2026-05-14T18:19:00.402867Z","strongest_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.","one_line_summary":"A product and staircase code decoder with iteration-independent weights outperforms Chase-Pyndiah by 0.23 dB and suits sliding-window hardware.","pipeline_version":"pith-pipeline@v0.9.0","weakest_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.","pith_extraction_headline":"Improved decoder for product and staircase codes uses fixed weighting coefficients to gain 0.23 dB over Chase-Pyndiah"},"references":{"count":6,"sample":[{"doi":"","year":1998,"title":"Near-optimum decoding of product codes: Block turbo codes","work_id":"bbc035b5-5b32-4b68-9a60-9057e55c79cf","ref_index":1,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"10.1109/tit.2024.3512412","year":2025,"title":"Soft-output suc- cessive cancellation list decoding","work_id":"67def54d-46fe-4989-b519-d22a8b80c856","ref_index":2,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"10.1109/twc","year":2025,"title":"Soft- output (so) grand and iterative decoding to outperform ldpcs","work_id":"6cf91f5b-1274-44a2-b880-fa1793f1dea3","ref_index":3,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"","year":2025,"title":"Soft-output from covered space decoding of product codes","work_id":"1302faef-a95f-474f-9fdf-54efd3d60b73","ref_index":4,"cited_arxiv_id":"","is_internal_anchor":false},{"doi":"10.1109/tit.2015.2410251","year":2015,"title":"List decoding of polar codes","work_id":"695278f6-13e3-4597-a47e-033cc008fd94","ref_index":5,"cited_arxiv_id":"","is_internal_anchor":false}],"resolved_work":6,"snapshot_sha256":"7570902dcc6b167568e01dafef8d8535a182b1adcaf7fe4d2331a4c1900a257b","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}