{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:P4372X3ODUKUKJDN25JLOQWQAG","short_pith_number":"pith:P4372X3O","schema_version":"1.0","canonical_sha256":"7f37fd5f6e1d1545246dd752b742d00188f67795e451e1875d73f830ba52b9c2","source":{"kind":"arxiv","id":"1808.07232","version":2},"attestation_state":"computed","paper":{"title":"Semidefinite Relaxation Based Blind Equalization using Constant Modulus Criterion","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Kun Wang","submitted_at":"2018-08-22T06:05:59Z","abstract_excerpt":"Blind equalization is a classic yet open problem. Statistic-based algorithms, such as constant modulus (CM), were widely investigated. One inherent issue with blind algorithms is the phase ambiguity of equalized signals. In this letter, we propose a novel scheme based on CM criterion and take advantage of the asymmetric property in a class of LDPC codes to resolve the phase ambiguity. Specifically, a new formulation with modified CM objective function and relaxed code constraints is presented."},"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":"1808.07232","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2018-08-22T06:05:59Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"6d247573f34882c3bf2eaeffab2c7c8faaf8bb2fd60f80340c65441f35a0f34d","abstract_canon_sha256":"d1441a76b0369b3361f61ca88cf2a18eb4af3288bba5b64eab8ef78c199caea7"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:01:58.029645Z","signature_b64":"80trsT+HqO7XgHle3Qme4YC+oktO3yJaXd4SxX5RxIam3azgel1nATvoOATLCYmOPEHpaugQ02iWctmBgEzFCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7f37fd5f6e1d1545246dd752b742d00188f67795e451e1875d73f830ba52b9c2","last_reissued_at":"2026-05-18T00:01:58.029097Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:01:58.029097Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Semidefinite Relaxation Based Blind Equalization using Constant Modulus Criterion","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Kun Wang","submitted_at":"2018-08-22T06:05:59Z","abstract_excerpt":"Blind equalization is a classic yet open problem. Statistic-based algorithms, such as constant modulus (CM), were widely investigated. One inherent issue with blind algorithms is the phase ambiguity of equalized signals. In this letter, we propose a novel scheme based on CM criterion and take advantage of the asymmetric property in a class of LDPC codes to resolve the phase ambiguity. Specifically, a new formulation with modified CM objective function and relaxed code constraints is presented."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.07232","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":""},"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":"1808.07232","created_at":"2026-05-18T00:01:58.029173+00:00"},{"alias_kind":"arxiv_version","alias_value":"1808.07232v2","created_at":"2026-05-18T00:01:58.029173+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.07232","created_at":"2026-05-18T00:01:58.029173+00:00"},{"alias_kind":"pith_short_12","alias_value":"P4372X3ODUKU","created_at":"2026-05-18T12:32:43.782077+00:00"},{"alias_kind":"pith_short_16","alias_value":"P4372X3ODUKUKJDN","created_at":"2026-05-18T12:32:43.782077+00:00"},{"alias_kind":"pith_short_8","alias_value":"P4372X3O","created_at":"2026-05-18T12:32:43.782077+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/P4372X3ODUKUKJDN25JLOQWQAG","json":"https://pith.science/pith/P4372X3ODUKUKJDN25JLOQWQAG.json","graph_json":"https://pith.science/api/pith-number/P4372X3ODUKUKJDN25JLOQWQAG/graph.json","events_json":"https://pith.science/api/pith-number/P4372X3ODUKUKJDN25JLOQWQAG/events.json","paper":"https://pith.science/paper/P4372X3O"},"agent_actions":{"view_html":"https://pith.science/pith/P4372X3ODUKUKJDN25JLOQWQAG","download_json":"https://pith.science/pith/P4372X3ODUKUKJDN25JLOQWQAG.json","view_paper":"https://pith.science/paper/P4372X3O","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1808.07232&json=true","fetch_graph":"https://pith.science/api/pith-number/P4372X3ODUKUKJDN25JLOQWQAG/graph.json","fetch_events":"https://pith.science/api/pith-number/P4372X3ODUKUKJDN25JLOQWQAG/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/P4372X3ODUKUKJDN25JLOQWQAG/action/timestamp_anchor","attest_storage":"https://pith.science/pith/P4372X3ODUKUKJDN25JLOQWQAG/action/storage_attestation","attest_author":"https://pith.science/pith/P4372X3ODUKUKJDN25JLOQWQAG/action/author_attestation","sign_citation":"https://pith.science/pith/P4372X3ODUKUKJDN25JLOQWQAG/action/citation_signature","submit_replication":"https://pith.science/pith/P4372X3ODUKUKJDN25JLOQWQAG/action/replication_record"}},"created_at":"2026-05-18T00:01:58.029173+00:00","updated_at":"2026-05-18T00:01:58.029173+00:00"}