{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:NP3FQMDBTGMCADAQ43UWRVFFZV","short_pith_number":"pith:NP3FQMDB","schema_version":"1.0","canonical_sha256":"6bf65830619998200c10e6e968d4a5cd5b52d7342d49fa97eb25432b4d3273e4","source":{"kind":"arxiv","id":"2507.23351","version":1},"attestation_state":"computed","paper":{"title":"Asymmetrical Filtering Impairments Mitigation for Digital- Subcarrier-Multiplexing Transmissions Enabled by Multiplication-free K-State Reserved Complex MLSE","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Chengbo Li, Da Hu, Heng Zhang, Hexun Jiang, Lei Shi, Shuai Wei, Weiqin Zhou, Wenjing Yu, Ye Zhao, Yicong Tu, Yongben Wang, Yong Chen, Zhuo Wang","submitted_at":"2025-07-31T08:57:34Z","abstract_excerpt":"We propose a multiplication-free K-state reserved complex maximum-likelihood-sequence-estimation (MLSE) to mitigate asymmetrical filtering impairments in digital-subcarrier-multiplexing transmissions. A required optical-to-noise ratio of 1.63dB over the conventional real MLSE is obtained after transmitting 90 GBaud DSCM DP-16QAM signal over 14 WSSs without multiplications."},"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":"2507.23351","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.optics","submitted_at":"2025-07-31T08:57:34Z","cross_cats_sorted":[],"title_canon_sha256":"d4c92309eae8353dc5f63fb26964f9dc136d489300267e53dd21eb3b9d21e14a","abstract_canon_sha256":"6d02206d8c7a2f594d39d60d38a70487a985fd5e0c9632d4c060583cb44f2a9f"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:46:10.671276Z","signature_b64":"5wfzhjnSGQWXgpsIrC9e4nfYiko82WXkDTErir8QK4LN4+CjvBarvbzH9YtJWXx0xKojEoKIR8sW98RvuGzVAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6bf65830619998200c10e6e968d4a5cd5b52d7342d49fa97eb25432b4d3273e4","last_reissued_at":"2026-07-05T11:46:10.670713Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:46:10.670713Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Asymmetrical Filtering Impairments Mitigation for Digital- Subcarrier-Multiplexing Transmissions Enabled by Multiplication-free K-State Reserved Complex MLSE","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"physics.optics","authors_text":"Chengbo Li, Da Hu, Heng Zhang, Hexun Jiang, Lei Shi, Shuai Wei, Weiqin Zhou, Wenjing Yu, Ye Zhao, Yicong Tu, Yongben Wang, Yong Chen, Zhuo Wang","submitted_at":"2025-07-31T08:57:34Z","abstract_excerpt":"We propose a multiplication-free K-state reserved complex maximum-likelihood-sequence-estimation (MLSE) to mitigate asymmetrical filtering impairments in digital-subcarrier-multiplexing transmissions. A required optical-to-noise ratio of 1.63dB over the conventional real MLSE is obtained after transmitting 90 GBaud DSCM DP-16QAM signal over 14 WSSs without multiplications."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2507.23351","kind":"arxiv","version":1},"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/2507.23351/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":"2507.23351","created_at":"2026-07-05T11:46:10.670776+00:00"},{"alias_kind":"arxiv_version","alias_value":"2507.23351v1","created_at":"2026-07-05T11:46:10.670776+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2507.23351","created_at":"2026-07-05T11:46:10.670776+00:00"},{"alias_kind":"pith_short_12","alias_value":"NP3FQMDBTGMC","created_at":"2026-07-05T11:46:10.670776+00:00"},{"alias_kind":"pith_short_16","alias_value":"NP3FQMDBTGMCADAQ","created_at":"2026-07-05T11:46:10.670776+00:00"},{"alias_kind":"pith_short_8","alias_value":"NP3FQMDB","created_at":"2026-07-05T11:46:10.670776+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/NP3FQMDBTGMCADAQ43UWRVFFZV","json":"https://pith.science/pith/NP3FQMDBTGMCADAQ43UWRVFFZV.json","graph_json":"https://pith.science/api/pith-number/NP3FQMDBTGMCADAQ43UWRVFFZV/graph.json","events_json":"https://pith.science/api/pith-number/NP3FQMDBTGMCADAQ43UWRVFFZV/events.json","paper":"https://pith.science/paper/NP3FQMDB"},"agent_actions":{"view_html":"https://pith.science/pith/NP3FQMDBTGMCADAQ43UWRVFFZV","download_json":"https://pith.science/pith/NP3FQMDBTGMCADAQ43UWRVFFZV.json","view_paper":"https://pith.science/paper/NP3FQMDB","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2507.23351&json=true","fetch_graph":"https://pith.science/api/pith-number/NP3FQMDBTGMCADAQ43UWRVFFZV/graph.json","fetch_events":"https://pith.science/api/pith-number/NP3FQMDBTGMCADAQ43UWRVFFZV/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/NP3FQMDBTGMCADAQ43UWRVFFZV/action/timestamp_anchor","attest_storage":"https://pith.science/pith/NP3FQMDBTGMCADAQ43UWRVFFZV/action/storage_attestation","attest_author":"https://pith.science/pith/NP3FQMDBTGMCADAQ43UWRVFFZV/action/author_attestation","sign_citation":"https://pith.science/pith/NP3FQMDBTGMCADAQ43UWRVFFZV/action/citation_signature","submit_replication":"https://pith.science/pith/NP3FQMDBTGMCADAQ43UWRVFFZV/action/replication_record"}},"created_at":"2026-07-05T11:46:10.670776+00:00","updated_at":"2026-07-05T11:46:10.670776+00:00"}