{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:ENKPO3HHR6EVMWFYBXNB3KZAEU","short_pith_number":"pith:ENKPO3HH","canonical_record":{"source":{"id":"1610.01433","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2016-10-05T14:20:10Z","cross_cats_sorted":["math.IT","math.OC"],"title_canon_sha256":"a2154a1e5f6d9c7f891f03f3d3d38bbef422582ca6f1c0faed6bcbdef2b0a39e","abstract_canon_sha256":"1c4e599471cdce605814ed9694484ba5babc6b7384cbfde17230cce2befb06ea"},"schema_version":"1.0"},"canonical_sha256":"2354f76ce78f895658b80dda1dab20251336081ea62d6997d6c61a074010ff3e","source":{"kind":"arxiv","id":"1610.01433","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1610.01433","created_at":"2026-05-18T00:45:54Z"},{"alias_kind":"arxiv_version","alias_value":"1610.01433v1","created_at":"2026-05-18T00:45:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.01433","created_at":"2026-05-18T00:45:54Z"},{"alias_kind":"pith_short_12","alias_value":"ENKPO3HHR6EV","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_16","alias_value":"ENKPO3HHR6EVMWFY","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_8","alias_value":"ENKPO3HH","created_at":"2026-05-18T12:30:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:ENKPO3HHR6EVMWFYBXNB3KZAEU","target":"record","payload":{"canonical_record":{"source":{"id":"1610.01433","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2016-10-05T14:20:10Z","cross_cats_sorted":["math.IT","math.OC"],"title_canon_sha256":"a2154a1e5f6d9c7f891f03f3d3d38bbef422582ca6f1c0faed6bcbdef2b0a39e","abstract_canon_sha256":"1c4e599471cdce605814ed9694484ba5babc6b7384cbfde17230cce2befb06ea"},"schema_version":"1.0"},"canonical_sha256":"2354f76ce78f895658b80dda1dab20251336081ea62d6997d6c61a074010ff3e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:45:54.174185Z","signature_b64":"JyDNB8ofM31vQkfD4b236NH2QQzfRaAEPTlvp2fC00k5JUu64Z3zV2of7Mii5Wx7Vroib7elrvVOEHv3h1eKAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2354f76ce78f895658b80dda1dab20251336081ea62d6997d6c61a074010ff3e","last_reissued_at":"2026-05-18T00:45:54.173572Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:45:54.173572Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1610.01433","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:45:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OuQGrR47DtG761fZOKOIzCZQYJ1YiAAMb9ONUnwMfGAlT6YtE7pnvM5lckQykhTZu6WsRyJxbrJ+l1ptVWu9Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T13:16:44.031276Z"},"content_sha256":"fb3918f6a1c83e9b459599f9c7ceb110bb724e1de6cd0871fc997052e92e6e2f","schema_version":"1.0","event_id":"sha256:fb3918f6a1c83e9b459599f9c7ceb110bb724e1de6cd0871fc997052e92e6e2f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:ENKPO3HHR6EVMWFYBXNB3KZAEU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Effective Low-Complexity Optimization Methods for Joint Phase Noise and Channel Estimation in OFDM","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT","math.OC"],"primary_cat":"cs.IT","authors_text":"Daniel P. Palomar, Prabhu Babu, Zhongju Wang","submitted_at":"2016-10-05T14:20:10Z","abstract_excerpt":"Phase noise correction is crucial to exploit full advantage of orthogonal frequency division multiplexing (OFDM) in modern high-data-rate communications. OFDM channel estimation with simultaneous phase noise compensation has therefore drawn much attention and stimulated continuing efforts. Existing methods, however, either have not taken into account the fundamental properties of phase noise or are only able to provide estimates of limited applicability owing to considerable computational complexity. In this paper, we have reformulated the joint estimation problem in the time domain as opposed"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.01433","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:45:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"svy1WJVMPZwNXWUVyjrTg5/qgYZrS0C2vN8Y5KVlqc9uXQOx7GXh60S738eganzSeCPMyAQFScHan/ga1rbPAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-29T13:16:44.031629Z"},"content_sha256":"de6ce4648f809cfba24a2e8a9f8ab2bba3f30bfb8bc66388e86ae1427c6e89c7","schema_version":"1.0","event_id":"sha256:de6ce4648f809cfba24a2e8a9f8ab2bba3f30bfb8bc66388e86ae1427c6e89c7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ENKPO3HHR6EVMWFYBXNB3KZAEU/bundle.json","state_url":"https://pith.science/pith/ENKPO3HHR6EVMWFYBXNB3KZAEU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ENKPO3HHR6EVMWFYBXNB3KZAEU/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-29T13:16:44Z","links":{"resolver":"https://pith.science/pith/ENKPO3HHR6EVMWFYBXNB3KZAEU","bundle":"https://pith.science/pith/ENKPO3HHR6EVMWFYBXNB3KZAEU/bundle.json","state":"https://pith.science/pith/ENKPO3HHR6EVMWFYBXNB3KZAEU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ENKPO3HHR6EVMWFYBXNB3KZAEU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:ENKPO3HHR6EVMWFYBXNB3KZAEU","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"1c4e599471cdce605814ed9694484ba5babc6b7384cbfde17230cce2befb06ea","cross_cats_sorted":["math.IT","math.OC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2016-10-05T14:20:10Z","title_canon_sha256":"a2154a1e5f6d9c7f891f03f3d3d38bbef422582ca6f1c0faed6bcbdef2b0a39e"},"schema_version":"1.0","source":{"id":"1610.01433","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1610.01433","created_at":"2026-05-18T00:45:54Z"},{"alias_kind":"arxiv_version","alias_value":"1610.01433v1","created_at":"2026-05-18T00:45:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.01433","created_at":"2026-05-18T00:45:54Z"},{"alias_kind":"pith_short_12","alias_value":"ENKPO3HHR6EV","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_16","alias_value":"ENKPO3HHR6EVMWFY","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_8","alias_value":"ENKPO3HH","created_at":"2026-05-18T12:30:12Z"}],"graph_snapshots":[{"event_id":"sha256:de6ce4648f809cfba24a2e8a9f8ab2bba3f30bfb8bc66388e86ae1427c6e89c7","target":"graph","created_at":"2026-05-18T00:45:54Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Phase noise correction is crucial to exploit full advantage of orthogonal frequency division multiplexing (OFDM) in modern high-data-rate communications. OFDM channel estimation with simultaneous phase noise compensation has therefore drawn much attention and stimulated continuing efforts. Existing methods, however, either have not taken into account the fundamental properties of phase noise or are only able to provide estimates of limited applicability owing to considerable computational complexity. In this paper, we have reformulated the joint estimation problem in the time domain as opposed","authors_text":"Daniel P. Palomar, Prabhu Babu, Zhongju Wang","cross_cats":["math.IT","math.OC"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2016-10-05T14:20:10Z","title":"Effective Low-Complexity Optimization Methods for Joint Phase Noise and Channel Estimation in OFDM"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.01433","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:fb3918f6a1c83e9b459599f9c7ceb110bb724e1de6cd0871fc997052e92e6e2f","target":"record","created_at":"2026-05-18T00:45:54Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"1c4e599471cdce605814ed9694484ba5babc6b7384cbfde17230cce2befb06ea","cross_cats_sorted":["math.IT","math.OC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2016-10-05T14:20:10Z","title_canon_sha256":"a2154a1e5f6d9c7f891f03f3d3d38bbef422582ca6f1c0faed6bcbdef2b0a39e"},"schema_version":"1.0","source":{"id":"1610.01433","kind":"arxiv","version":1}},"canonical_sha256":"2354f76ce78f895658b80dda1dab20251336081ea62d6997d6c61a074010ff3e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2354f76ce78f895658b80dda1dab20251336081ea62d6997d6c61a074010ff3e","first_computed_at":"2026-05-18T00:45:54.173572Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:45:54.173572Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JyDNB8ofM31vQkfD4b236NH2QQzfRaAEPTlvp2fC00k5JUu64Z3zV2of7Mii5Wx7Vroib7elrvVOEHv3h1eKAg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:45:54.174185Z","signed_message":"canonical_sha256_bytes"},"source_id":"1610.01433","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fb3918f6a1c83e9b459599f9c7ceb110bb724e1de6cd0871fc997052e92e6e2f","sha256:de6ce4648f809cfba24a2e8a9f8ab2bba3f30bfb8bc66388e86ae1427c6e89c7"],"state_sha256":"1ccd4e1ac55d8239b00941b1c5cbee6f7e0fff9ca7c59bde61d0bb8c8687f238"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LSLpowOSOKKxIk5GCsYNAKF1p94+dwHTa53fhe1tOKtlAen0CM3bJ9IyBdhsIDaiSwrZP+me6pK6XXJgL7BvBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-29T13:16:44.033476Z","bundle_sha256":"b5426e02c0afade2fcc32ac1cacf2da1b2cf5e59aacf4229a89920e6b205f146"}}