{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2023:LL6NIMHERJ24Z6BKDQTSD5BDZX","short_pith_number":"pith:LL6NIMHE","schema_version":"1.0","canonical_sha256":"5afcd430e48a75ccf82a1c2721f423cdd869ef30ef3ab5789a1a588100bc3f40","source":{"kind":"arxiv","id":"2302.11851","version":1},"attestation_state":"computed","paper":{"title":"Theoretical Evaluation of the Capacity-Achieving Distribution for IM-DD Fiber-Optic Channels","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"Dongdong Zou, Fan Li, Sui Qi, Wei Wang, Zhaohui Li","submitted_at":"2023-02-23T08:32:43Z","abstract_excerpt":"The capacity and capacity-achieving distribution for intensity-modulation and direct-detection (IM-DD) fiber-optic channels is theoretically investigated. Different from coherent fiber-optic channels, we indicate that the capacity-achieving distribution of IM-DD systems should be discussed separately in two cases: 1) IM-DD systems without optical amplifier, which are constrained in peak power; 2) IM-DD systems with optical amplifier, which are the average power constraint (APC) system. For the two models, the maximum mutual information achieving distribution, instead of the maximum input entro"},"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":"2302.11851","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2023-02-23T08:32:43Z","cross_cats_sorted":[],"title_canon_sha256":"e984e408ff209303d0e1cfd35a85b412ffeed913f77221d5c315d8fdf1265702","abstract_canon_sha256":"417633a120ea03a67cc221c4a6a150d6d7e1e0d4e885b99a9384cabeb88b69eb"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:44:57.142560Z","signature_b64":"Y4ljX63dde9Ynn8AC96J7D58nhl+ZW4/q+QFGyVwjHuT5moexLi/hSwbmM1NqP6hKTFOTS/25+nfk+oWcoEACA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5afcd430e48a75ccf82a1c2721f423cdd869ef30ef3ab5789a1a588100bc3f40","last_reissued_at":"2026-07-05T05:44:57.142081Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:44:57.142081Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Theoretical Evaluation of the Capacity-Achieving Distribution for IM-DD Fiber-Optic Channels","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"Dongdong Zou, Fan Li, Sui Qi, Wei Wang, Zhaohui Li","submitted_at":"2023-02-23T08:32:43Z","abstract_excerpt":"The capacity and capacity-achieving distribution for intensity-modulation and direct-detection (IM-DD) fiber-optic channels is theoretically investigated. Different from coherent fiber-optic channels, we indicate that the capacity-achieving distribution of IM-DD systems should be discussed separately in two cases: 1) IM-DD systems without optical amplifier, which are constrained in peak power; 2) IM-DD systems with optical amplifier, which are the average power constraint (APC) system. For the two models, the maximum mutual information achieving distribution, instead of the maximum input entro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2302.11851","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/2302.11851/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":"2302.11851","created_at":"2026-07-05T05:44:57.142136+00:00"},{"alias_kind":"arxiv_version","alias_value":"2302.11851v1","created_at":"2026-07-05T05:44:57.142136+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2302.11851","created_at":"2026-07-05T05:44:57.142136+00:00"},{"alias_kind":"pith_short_12","alias_value":"LL6NIMHERJ24","created_at":"2026-07-05T05:44:57.142136+00:00"},{"alias_kind":"pith_short_16","alias_value":"LL6NIMHERJ24Z6BK","created_at":"2026-07-05T05:44:57.142136+00:00"},{"alias_kind":"pith_short_8","alias_value":"LL6NIMHE","created_at":"2026-07-05T05:44:57.142136+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/LL6NIMHERJ24Z6BKDQTSD5BDZX","json":"https://pith.science/pith/LL6NIMHERJ24Z6BKDQTSD5BDZX.json","graph_json":"https://pith.science/api/pith-number/LL6NIMHERJ24Z6BKDQTSD5BDZX/graph.json","events_json":"https://pith.science/api/pith-number/LL6NIMHERJ24Z6BKDQTSD5BDZX/events.json","paper":"https://pith.science/paper/LL6NIMHE"},"agent_actions":{"view_html":"https://pith.science/pith/LL6NIMHERJ24Z6BKDQTSD5BDZX","download_json":"https://pith.science/pith/LL6NIMHERJ24Z6BKDQTSD5BDZX.json","view_paper":"https://pith.science/paper/LL6NIMHE","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2302.11851&json=true","fetch_graph":"https://pith.science/api/pith-number/LL6NIMHERJ24Z6BKDQTSD5BDZX/graph.json","fetch_events":"https://pith.science/api/pith-number/LL6NIMHERJ24Z6BKDQTSD5BDZX/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/LL6NIMHERJ24Z6BKDQTSD5BDZX/action/timestamp_anchor","attest_storage":"https://pith.science/pith/LL6NIMHERJ24Z6BKDQTSD5BDZX/action/storage_attestation","attest_author":"https://pith.science/pith/LL6NIMHERJ24Z6BKDQTSD5BDZX/action/author_attestation","sign_citation":"https://pith.science/pith/LL6NIMHERJ24Z6BKDQTSD5BDZX/action/citation_signature","submit_replication":"https://pith.science/pith/LL6NIMHERJ24Z6BKDQTSD5BDZX/action/replication_record"}},"created_at":"2026-07-05T05:44:57.142136+00:00","updated_at":"2026-07-05T05:44:57.142136+00:00"}