{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:SQNTQS4E5OGW3RFC7UNL6ADJM6","short_pith_number":"pith:SQNTQS4E","canonical_record":{"source":{"id":"1506.09060","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2015-06-30T12:34:11Z","cross_cats_sorted":["math.IT","stat.AP"],"title_canon_sha256":"b9ced87328bfac40977ae142f93f13f7f2fe37c0ab418c50b4bf8e406af2691e","abstract_canon_sha256":"51245ca3f8df7a24dfe0359d8326c97e196e6915cee04113dd0b32980632eab2"},"schema_version":"1.0"},"canonical_sha256":"941b384b84eb8d6dc4a2fd1abf006967b4c6756397029e85e25d948bc856c2c2","source":{"kind":"arxiv","id":"1506.09060","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.09060","created_at":"2026-05-18T01:37:33Z"},{"alias_kind":"arxiv_version","alias_value":"1506.09060v1","created_at":"2026-05-18T01:37:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.09060","created_at":"2026-05-18T01:37:33Z"},{"alias_kind":"pith_short_12","alias_value":"SQNTQS4E5OGW","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"SQNTQS4E5OGW3RFC","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"SQNTQS4E","created_at":"2026-05-18T12:29:42Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:SQNTQS4E5OGW3RFC7UNL6ADJM6","target":"record","payload":{"canonical_record":{"source":{"id":"1506.09060","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2015-06-30T12:34:11Z","cross_cats_sorted":["math.IT","stat.AP"],"title_canon_sha256":"b9ced87328bfac40977ae142f93f13f7f2fe37c0ab418c50b4bf8e406af2691e","abstract_canon_sha256":"51245ca3f8df7a24dfe0359d8326c97e196e6915cee04113dd0b32980632eab2"},"schema_version":"1.0"},"canonical_sha256":"941b384b84eb8d6dc4a2fd1abf006967b4c6756397029e85e25d948bc856c2c2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:37:33.750256Z","signature_b64":"hB1vNcBycoGCMWl5mij+G3mHqz4hOYvBrbrIZucQRRq9A8cl1oG2lTGGnk+Md0TdT2HG1UxXgsX2X6/4mVNkCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"941b384b84eb8d6dc4a2fd1abf006967b4c6756397029e85e25d948bc856c2c2","last_reissued_at":"2026-05-18T01:37:33.749841Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:37:33.749841Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1506.09060","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":"2026-05-18T01:37:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XBWW/dHverWkgsZ4DNk7XU8ldUQw5bZQ58gv4mJ26Pa3Pmyw179+1/KuD+Flj2asNsNypVkmGSLKLX0PvlRkDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T22:52:54.904041Z"},"content_sha256":"bc77c86bed61db8ac8e4eca63124c2db6816923beb1fe907d7e26f58ca001404","schema_version":"1.0","event_id":"sha256:bc77c86bed61db8ac8e4eca63124c2db6816923beb1fe907d7e26f58ca001404"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:SQNTQS4E5OGW3RFC7UNL6ADJM6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Nonlinear Distortion Reduction in OFDM from Reliable Perturbations in Data Carriers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT","stat.AP"],"primary_cat":"cs.IT","authors_text":"Anum Ali, Ebrahim B. Al-Safadi, Mudassir Masood, Tareq Y. Al-Naffouri","submitted_at":"2015-06-30T12:34:11Z","abstract_excerpt":"A novel method for correcting the effect of nonlinear distortion in orthogonal frequency division multiplexing signals is proposed. The method depends on adaptively selecting the distortion over a subset of the data carriers, and then using tools from compressed sensing and sparse Bayesian recovery to estimate the distortion over the other carriers. Central to this method is the fact that carriers (or tones) are decoded with different levels of confidence, depending on a coupled function of the magnitude and phase of the distortion over each carrier, in addition to the respective channel stren"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.09060","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":"2026-05-18T01:37:33Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/BqPi8QajxXGK9gc/H2XyPqlZ3so1XsS1smdYuF3QEe7Ha7Uz3DGvUL5zyGE0WWWYJbf8ErzfF+gsUjI80+WDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T22:52:54.904402Z"},"content_sha256":"f1d1af34029db2a70abb1ebd4b2b3be3d1f6f3a07e9f649b78c03a746a9eecb0","schema_version":"1.0","event_id":"sha256:f1d1af34029db2a70abb1ebd4b2b3be3d1f6f3a07e9f649b78c03a746a9eecb0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SQNTQS4E5OGW3RFC7UNL6ADJM6/bundle.json","state_url":"https://pith.science/pith/SQNTQS4E5OGW3RFC7UNL6ADJM6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SQNTQS4E5OGW3RFC7UNL6ADJM6/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":"2026-06-03T22:52:54Z","links":{"resolver":"https://pith.science/pith/SQNTQS4E5OGW3RFC7UNL6ADJM6","bundle":"https://pith.science/pith/SQNTQS4E5OGW3RFC7UNL6ADJM6/bundle.json","state":"https://pith.science/pith/SQNTQS4E5OGW3RFC7UNL6ADJM6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SQNTQS4E5OGW3RFC7UNL6ADJM6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:SQNTQS4E5OGW3RFC7UNL6ADJM6","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":"51245ca3f8df7a24dfe0359d8326c97e196e6915cee04113dd0b32980632eab2","cross_cats_sorted":["math.IT","stat.AP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2015-06-30T12:34:11Z","title_canon_sha256":"b9ced87328bfac40977ae142f93f13f7f2fe37c0ab418c50b4bf8e406af2691e"},"schema_version":"1.0","source":{"id":"1506.09060","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1506.09060","created_at":"2026-05-18T01:37:33Z"},{"alias_kind":"arxiv_version","alias_value":"1506.09060v1","created_at":"2026-05-18T01:37:33Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1506.09060","created_at":"2026-05-18T01:37:33Z"},{"alias_kind":"pith_short_12","alias_value":"SQNTQS4E5OGW","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_16","alias_value":"SQNTQS4E5OGW3RFC","created_at":"2026-05-18T12:29:42Z"},{"alias_kind":"pith_short_8","alias_value":"SQNTQS4E","created_at":"2026-05-18T12:29:42Z"}],"graph_snapshots":[{"event_id":"sha256:f1d1af34029db2a70abb1ebd4b2b3be3d1f6f3a07e9f649b78c03a746a9eecb0","target":"graph","created_at":"2026-05-18T01:37:33Z","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":"A novel method for correcting the effect of nonlinear distortion in orthogonal frequency division multiplexing signals is proposed. The method depends on adaptively selecting the distortion over a subset of the data carriers, and then using tools from compressed sensing and sparse Bayesian recovery to estimate the distortion over the other carriers. Central to this method is the fact that carriers (or tones) are decoded with different levels of confidence, depending on a coupled function of the magnitude and phase of the distortion over each carrier, in addition to the respective channel stren","authors_text":"Anum Ali, Ebrahim B. Al-Safadi, Mudassir Masood, Tareq Y. Al-Naffouri","cross_cats":["math.IT","stat.AP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2015-06-30T12:34:11Z","title":"Nonlinear Distortion Reduction in OFDM from Reliable Perturbations in Data Carriers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1506.09060","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:bc77c86bed61db8ac8e4eca63124c2db6816923beb1fe907d7e26f58ca001404","target":"record","created_at":"2026-05-18T01:37:33Z","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":"51245ca3f8df7a24dfe0359d8326c97e196e6915cee04113dd0b32980632eab2","cross_cats_sorted":["math.IT","stat.AP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2015-06-30T12:34:11Z","title_canon_sha256":"b9ced87328bfac40977ae142f93f13f7f2fe37c0ab418c50b4bf8e406af2691e"},"schema_version":"1.0","source":{"id":"1506.09060","kind":"arxiv","version":1}},"canonical_sha256":"941b384b84eb8d6dc4a2fd1abf006967b4c6756397029e85e25d948bc856c2c2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"941b384b84eb8d6dc4a2fd1abf006967b4c6756397029e85e25d948bc856c2c2","first_computed_at":"2026-05-18T01:37:33.749841Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:37:33.749841Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hB1vNcBycoGCMWl5mij+G3mHqz4hOYvBrbrIZucQRRq9A8cl1oG2lTGGnk+Md0TdT2HG1UxXgsX2X6/4mVNkCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:37:33.750256Z","signed_message":"canonical_sha256_bytes"},"source_id":"1506.09060","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bc77c86bed61db8ac8e4eca63124c2db6816923beb1fe907d7e26f58ca001404","sha256:f1d1af34029db2a70abb1ebd4b2b3be3d1f6f3a07e9f649b78c03a746a9eecb0"],"state_sha256":"45b27c838b7ef2165d42cf6156c81af3dddcc79c4c492773faa74482d7d484d3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8puDqyfRElql+6RyQTbuAIP89P3vWuVOdJ3OlnJJ6efuqUBDY2Q64MqYhndJ7mD8KeLiUiF6Q5vrGdNR1QARDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T22:52:54.906345Z","bundle_sha256":"2a220167d1daa0091b9ce71905db42fa3cf8611d154450effb4e10882cc2dada"}}