{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:V63QIYJOX5LVVBHVLACKO2JZYW","short_pith_number":"pith:V63QIYJO","schema_version":"1.0","canonical_sha256":"afb704612ebf575a84f55804a76939c59898077e2bb239fd4274949bdc2ba998","source":{"kind":"arxiv","id":"1905.00197","version":1},"attestation_state":"computed","paper":{"title":"Enhanced Orthogonal Frequency-Division Multiplexing with Subcarrier Number Modulation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.IT","math.IT"],"primary_cat":"eess.SP","authors_text":"Basem Shihada, Guoqing Ma, Mohamed-Slim Alouini, Shuping Dang","submitted_at":"2019-05-01T06:14:25Z","abstract_excerpt":"A novel modulation scheme termed orthogonal frequency-division multiplexing with subcarrier number modulation (OFDM-SNM) has been proposed and regarded as one of the promising candidate modulation schemes for next generation networks. Although OFDM-SNM is capable of having a higher spectral efficiency (SE) than OFDM with index modulation (OFDM-IM) and plain OFDM under certain conditions, its reliability is relatively inferior to these existing schemes, because the number of active subcarriers varies. In this regard, we propose an enhanced OFDM-SNM scheme in this paper, which utilizes the flexi"},"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":"1905.00197","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-05-01T06:14:25Z","cross_cats_sorted":["cs.IT","math.IT"],"title_canon_sha256":"1ae7ce116164d4cd643e155a44901291e89a14e4a052b4dc28816ad0cc184466","abstract_canon_sha256":"f57949a3a23640497889d5691c438bf16df0bb0049d98890e766c4a064cecd4c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:47:13.472196Z","signature_b64":"s7U1EGcmP+Dmo47E8gM6j74QDdoZfNxpw3ibDDy0zqwPXKjt242qvI1ZgyJG4gyPYZclAs3pQAFzUgMDRcSaAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"afb704612ebf575a84f55804a76939c59898077e2bb239fd4274949bdc2ba998","last_reissued_at":"2026-05-17T23:47:13.471796Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:47:13.471796Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Enhanced Orthogonal Frequency-Division Multiplexing with Subcarrier Number Modulation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.IT","math.IT"],"primary_cat":"eess.SP","authors_text":"Basem Shihada, Guoqing Ma, Mohamed-Slim Alouini, Shuping Dang","submitted_at":"2019-05-01T06:14:25Z","abstract_excerpt":"A novel modulation scheme termed orthogonal frequency-division multiplexing with subcarrier number modulation (OFDM-SNM) has been proposed and regarded as one of the promising candidate modulation schemes for next generation networks. Although OFDM-SNM is capable of having a higher spectral efficiency (SE) than OFDM with index modulation (OFDM-IM) and plain OFDM under certain conditions, its reliability is relatively inferior to these existing schemes, because the number of active subcarriers varies. In this regard, we propose an enhanced OFDM-SNM scheme in this paper, which utilizes the flexi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.00197","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":""},"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":"1905.00197","created_at":"2026-05-17T23:47:13.471871+00:00"},{"alias_kind":"arxiv_version","alias_value":"1905.00197v1","created_at":"2026-05-17T23:47:13.471871+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.00197","created_at":"2026-05-17T23:47:13.471871+00:00"},{"alias_kind":"pith_short_12","alias_value":"V63QIYJOX5LV","created_at":"2026-05-18T12:33:30.264802+00:00"},{"alias_kind":"pith_short_16","alias_value":"V63QIYJOX5LVVBHV","created_at":"2026-05-18T12:33:30.264802+00:00"},{"alias_kind":"pith_short_8","alias_value":"V63QIYJO","created_at":"2026-05-18T12:33:30.264802+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/V63QIYJOX5LVVBHVLACKO2JZYW","json":"https://pith.science/pith/V63QIYJOX5LVVBHVLACKO2JZYW.json","graph_json":"https://pith.science/api/pith-number/V63QIYJOX5LVVBHVLACKO2JZYW/graph.json","events_json":"https://pith.science/api/pith-number/V63QIYJOX5LVVBHVLACKO2JZYW/events.json","paper":"https://pith.science/paper/V63QIYJO"},"agent_actions":{"view_html":"https://pith.science/pith/V63QIYJOX5LVVBHVLACKO2JZYW","download_json":"https://pith.science/pith/V63QIYJOX5LVVBHVLACKO2JZYW.json","view_paper":"https://pith.science/paper/V63QIYJO","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1905.00197&json=true","fetch_graph":"https://pith.science/api/pith-number/V63QIYJOX5LVVBHVLACKO2JZYW/graph.json","fetch_events":"https://pith.science/api/pith-number/V63QIYJOX5LVVBHVLACKO2JZYW/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/V63QIYJOX5LVVBHVLACKO2JZYW/action/timestamp_anchor","attest_storage":"https://pith.science/pith/V63QIYJOX5LVVBHVLACKO2JZYW/action/storage_attestation","attest_author":"https://pith.science/pith/V63QIYJOX5LVVBHVLACKO2JZYW/action/author_attestation","sign_citation":"https://pith.science/pith/V63QIYJOX5LVVBHVLACKO2JZYW/action/citation_signature","submit_replication":"https://pith.science/pith/V63QIYJOX5LVVBHVLACKO2JZYW/action/replication_record"}},"created_at":"2026-05-17T23:47:13.471871+00:00","updated_at":"2026-05-17T23:47:13.471871+00:00"}