{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2023:UEADIWUQVFLKXTG3QMOPVQCI5M","short_pith_number":"pith:UEADIWUQ","schema_version":"1.0","canonical_sha256":"a100345a90a956abccdb831cfac048eb06a15f69f150827444e32c7f06114795","source":{"kind":"arxiv","id":"2312.09444","version":2},"attestation_state":"computed","paper":{"title":"BICM-compatible Rate Adaptive Geometric Constellation Shaping Using Optimized Many-to-one Labeling","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["cs.IT","math.IT","math.OC","physics.optics"],"primary_cat":"eess.SP","authors_text":"Darko Zibar, Francesco Da Ros, Metodi Plamenov Yankov, Ognjen Jovanovic, Smaranika Swain","submitted_at":"2023-11-10T12:09:44Z","abstract_excerpt":"In this paper, a rate adaptive geometric constellation shaping (GCS) scheme which is fully backward-compatible with existing state of the art bit-interleaved coded modulation (BICM) systems is proposed and experimentally demonstrated. The system relies on optimization of the positions of the quadrature amplitude modulation (QAM) points on the I/Q plane for maximized achievable information rate, while maintaining quantization and fiber nonlinear noise robustness. Furthermore, `dummy' bits are multiplexed with coded bits before mapping to symbols. Rate adaptivity is achieved by tuning the ratio "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2312.09444","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.SP","submitted_at":"2023-11-10T12:09:44Z","cross_cats_sorted":["cs.IT","math.IT","math.OC","physics.optics"],"title_canon_sha256":"d4bf799a038060e556fd5adfb494abbff48e8141b000e9d350e206091e2c2ccb","abstract_canon_sha256":"b1108c71553b1a3249930487f0c53427f361b80c1990e7e6f87fec406f94b151"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:55:27.207159Z","signature_b64":"9JX6SkPaib02AWRFwSWBCoO7tp/e85JRdKnA7ilQb+gz8iN/bS01xdGcsowq9zcZY0tLZmXtNcjbAKtS/ZAoBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a100345a90a956abccdb831cfac048eb06a15f69f150827444e32c7f06114795","last_reissued_at":"2026-07-05T07:55:27.206685Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:55:27.206685Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"BICM-compatible Rate Adaptive Geometric Constellation Shaping Using Optimized Many-to-one Labeling","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["cs.IT","math.IT","math.OC","physics.optics"],"primary_cat":"eess.SP","authors_text":"Darko Zibar, Francesco Da Ros, Metodi Plamenov Yankov, Ognjen Jovanovic, Smaranika Swain","submitted_at":"2023-11-10T12:09:44Z","abstract_excerpt":"In this paper, a rate adaptive geometric constellation shaping (GCS) scheme which is fully backward-compatible with existing state of the art bit-interleaved coded modulation (BICM) systems is proposed and experimentally demonstrated. The system relies on optimization of the positions of the quadrature amplitude modulation (QAM) points on the I/Q plane for maximized achievable information rate, while maintaining quantization and fiber nonlinear noise robustness. Furthermore, `dummy' bits are multiplexed with coded bits before mapping to symbols. Rate adaptivity is achieved by tuning the ratio "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2312.09444","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2312.09444/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2312.09444","created_at":"2026-07-05T07:55:27.206743+00:00"},{"alias_kind":"arxiv_version","alias_value":"2312.09444v2","created_at":"2026-07-05T07:55:27.206743+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2312.09444","created_at":"2026-07-05T07:55:27.206743+00:00"},{"alias_kind":"pith_short_12","alias_value":"UEADIWUQVFLK","created_at":"2026-07-05T07:55:27.206743+00:00"},{"alias_kind":"pith_short_16","alias_value":"UEADIWUQVFLKXTG3","created_at":"2026-07-05T07:55:27.206743+00:00"},{"alias_kind":"pith_short_8","alias_value":"UEADIWUQ","created_at":"2026-07-05T07:55:27.206743+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/UEADIWUQVFLKXTG3QMOPVQCI5M","json":"https://pith.science/pith/UEADIWUQVFLKXTG3QMOPVQCI5M.json","graph_json":"https://pith.science/api/pith-number/UEADIWUQVFLKXTG3QMOPVQCI5M/graph.json","events_json":"https://pith.science/api/pith-number/UEADIWUQVFLKXTG3QMOPVQCI5M/events.json","paper":"https://pith.science/paper/UEADIWUQ"},"agent_actions":{"view_html":"https://pith.science/pith/UEADIWUQVFLKXTG3QMOPVQCI5M","download_json":"https://pith.science/pith/UEADIWUQVFLKXTG3QMOPVQCI5M.json","view_paper":"https://pith.science/paper/UEADIWUQ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2312.09444&json=true","fetch_graph":"https://pith.science/api/pith-number/UEADIWUQVFLKXTG3QMOPVQCI5M/graph.json","fetch_events":"https://pith.science/api/pith-number/UEADIWUQVFLKXTG3QMOPVQCI5M/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/UEADIWUQVFLKXTG3QMOPVQCI5M/action/timestamp_anchor","attest_storage":"https://pith.science/pith/UEADIWUQVFLKXTG3QMOPVQCI5M/action/storage_attestation","attest_author":"https://pith.science/pith/UEADIWUQVFLKXTG3QMOPVQCI5M/action/author_attestation","sign_citation":"https://pith.science/pith/UEADIWUQVFLKXTG3QMOPVQCI5M/action/citation_signature","submit_replication":"https://pith.science/pith/UEADIWUQVFLKXTG3QMOPVQCI5M/action/replication_record"}},"created_at":"2026-07-05T07:55:27.206743+00:00","updated_at":"2026-07-05T07:55:27.206743+00:00"}