{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:NSZXLL7C6YSQJSNC3CHUO2OSWN","short_pith_number":"pith:NSZXLL7C","canonical_record":{"source":{"id":"1101.4335","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2011-01-22T23:50:01Z","cross_cats_sorted":["math.IT","math.ST","stat.TH"],"title_canon_sha256":"6802f9de459048749e029b723c571faa9cbff2c19d7c7a1d3d28519a0ba422ab","abstract_canon_sha256":"417239ee926b178e9534db89d115801e11e6a6c529dadc2bf98d534a844ee235"},"schema_version":"1.0"},"canonical_sha256":"6cb375afe2f62504c9a2d88f4769d2b343b69bd5ac43c25e5a820079244df787","source":{"kind":"arxiv","id":"1101.4335","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1101.4335","created_at":"2026-05-18T02:03:25Z"},{"alias_kind":"arxiv_version","alias_value":"1101.4335v1","created_at":"2026-05-18T02:03:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1101.4335","created_at":"2026-05-18T02:03:25Z"},{"alias_kind":"pith_short_12","alias_value":"NSZXLL7C6YSQ","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_16","alias_value":"NSZXLL7C6YSQJSNC","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_8","alias_value":"NSZXLL7C","created_at":"2026-05-18T12:26:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:NSZXLL7C6YSQJSNC3CHUO2OSWN","target":"record","payload":{"canonical_record":{"source":{"id":"1101.4335","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2011-01-22T23:50:01Z","cross_cats_sorted":["math.IT","math.ST","stat.TH"],"title_canon_sha256":"6802f9de459048749e029b723c571faa9cbff2c19d7c7a1d3d28519a0ba422ab","abstract_canon_sha256":"417239ee926b178e9534db89d115801e11e6a6c529dadc2bf98d534a844ee235"},"schema_version":"1.0"},"canonical_sha256":"6cb375afe2f62504c9a2d88f4769d2b343b69bd5ac43c25e5a820079244df787","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:03:25.265656Z","signature_b64":"F2yjJKsW/ezZh732KfkvMxE1xsfxO46UeS88n2vgaT5gun7pEtjY9qqKHUomuT6+dorAHSZWEJKLY8CI6GGyAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6cb375afe2f62504c9a2d88f4769d2b343b69bd5ac43c25e5a820079244df787","last_reissued_at":"2026-05-18T02:03:25.264884Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:03:25.264884Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1101.4335","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":"2026-05-18T02:03:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hS/j37ccmpn/vZq7nFSVCoTbSBa7IE+0X/NR6eePRDLDQ02lapk10j7fO4+6PypJmpFZ39oVpG2T69duvee3Dw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T15:06:16.992282Z"},"content_sha256":"ba257e7ab58a11378dab4360ed7357058293f649f0cc5c0364ba10a57f8e131d","schema_version":"1.0","event_id":"sha256:ba257e7ab58a11378dab4360ed7357058293f649f0cc5c0364ba10a57f8e131d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:NSZXLL7C6YSQJSNC3CHUO2OSWN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Peak Reduction and Clipping Mitigation by Compressive Sensing","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT","math.ST","stat.TH"],"primary_cat":"cs.IT","authors_text":"Ebrahim B. Al-Safadi, Tareq Y. Al-Naffouri","submitted_at":"2011-01-22T23:50:01Z","abstract_excerpt":"This work establishes the design, analysis, and fine-tuning of a Peak-to-Average-Power-Ratio (PAPR) reducing system, based on compressed sensing at the receiver of a peak-reducing sparse clipper applied to an OFDM signal at the transmitter. By exploiting the sparsity of the OFDM signal in the time domain relative to a pre-defined clipping threshold, the method depends on partially observing the frequency content of extremely simple sparse clippers to recover the locations, magnitudes, and phases of the clipped coefficients of the peak-reduced signal. We claim that in the absence of optimizatio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1101.4335","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":"2026-05-18T02:03:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"c40cYiHLnJpBZpclPU7Ai684GZ0UgFBu2rX1oD5+uA58al2XYeDoopVMv7xgMUqRlryHrlNmLgjxMlN3ojYSCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T15:06:16.992913Z"},"content_sha256":"d02efcd46a4a0607c8a9f8912c3d0ef8c47be9bca4919ccfc95cea173bcd5bf2","schema_version":"1.0","event_id":"sha256:d02efcd46a4a0607c8a9f8912c3d0ef8c47be9bca4919ccfc95cea173bcd5bf2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NSZXLL7C6YSQJSNC3CHUO2OSWN/bundle.json","state_url":"https://pith.science/pith/NSZXLL7C6YSQJSNC3CHUO2OSWN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NSZXLL7C6YSQJSNC3CHUO2OSWN/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":"2026-06-23T15:06:16Z","links":{"resolver":"https://pith.science/pith/NSZXLL7C6YSQJSNC3CHUO2OSWN","bundle":"https://pith.science/pith/NSZXLL7C6YSQJSNC3CHUO2OSWN/bundle.json","state":"https://pith.science/pith/NSZXLL7C6YSQJSNC3CHUO2OSWN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NSZXLL7C6YSQJSNC3CHUO2OSWN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:NSZXLL7C6YSQJSNC3CHUO2OSWN","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":"417239ee926b178e9534db89d115801e11e6a6c529dadc2bf98d534a844ee235","cross_cats_sorted":["math.IT","math.ST","stat.TH"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2011-01-22T23:50:01Z","title_canon_sha256":"6802f9de459048749e029b723c571faa9cbff2c19d7c7a1d3d28519a0ba422ab"},"schema_version":"1.0","source":{"id":"1101.4335","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1101.4335","created_at":"2026-05-18T02:03:25Z"},{"alias_kind":"arxiv_version","alias_value":"1101.4335v1","created_at":"2026-05-18T02:03:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1101.4335","created_at":"2026-05-18T02:03:25Z"},{"alias_kind":"pith_short_12","alias_value":"NSZXLL7C6YSQ","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_16","alias_value":"NSZXLL7C6YSQJSNC","created_at":"2026-05-18T12:26:37Z"},{"alias_kind":"pith_short_8","alias_value":"NSZXLL7C","created_at":"2026-05-18T12:26:37Z"}],"graph_snapshots":[{"event_id":"sha256:d02efcd46a4a0607c8a9f8912c3d0ef8c47be9bca4919ccfc95cea173bcd5bf2","target":"graph","created_at":"2026-05-18T02:03:25Z","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":"This work establishes the design, analysis, and fine-tuning of a Peak-to-Average-Power-Ratio (PAPR) reducing system, based on compressed sensing at the receiver of a peak-reducing sparse clipper applied to an OFDM signal at the transmitter. By exploiting the sparsity of the OFDM signal in the time domain relative to a pre-defined clipping threshold, the method depends on partially observing the frequency content of extremely simple sparse clippers to recover the locations, magnitudes, and phases of the clipped coefficients of the peak-reduced signal. We claim that in the absence of optimizatio","authors_text":"Ebrahim B. Al-Safadi, Tareq Y. Al-Naffouri","cross_cats":["math.IT","math.ST","stat.TH"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2011-01-22T23:50:01Z","title":"Peak Reduction and Clipping Mitigation by Compressive Sensing"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1101.4335","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:ba257e7ab58a11378dab4360ed7357058293f649f0cc5c0364ba10a57f8e131d","target":"record","created_at":"2026-05-18T02:03:25Z","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":"417239ee926b178e9534db89d115801e11e6a6c529dadc2bf98d534a844ee235","cross_cats_sorted":["math.IT","math.ST","stat.TH"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2011-01-22T23:50:01Z","title_canon_sha256":"6802f9de459048749e029b723c571faa9cbff2c19d7c7a1d3d28519a0ba422ab"},"schema_version":"1.0","source":{"id":"1101.4335","kind":"arxiv","version":1}},"canonical_sha256":"6cb375afe2f62504c9a2d88f4769d2b343b69bd5ac43c25e5a820079244df787","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6cb375afe2f62504c9a2d88f4769d2b343b69bd5ac43c25e5a820079244df787","first_computed_at":"2026-05-18T02:03:25.264884Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:03:25.264884Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"F2yjJKsW/ezZh732KfkvMxE1xsfxO46UeS88n2vgaT5gun7pEtjY9qqKHUomuT6+dorAHSZWEJKLY8CI6GGyAg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:03:25.265656Z","signed_message":"canonical_sha256_bytes"},"source_id":"1101.4335","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ba257e7ab58a11378dab4360ed7357058293f649f0cc5c0364ba10a57f8e131d","sha256:d02efcd46a4a0607c8a9f8912c3d0ef8c47be9bca4919ccfc95cea173bcd5bf2"],"state_sha256":"ffb0ec6476fc0dee454c79b2155137143c259d5fd0ad8b463a99810cc9131170"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WuVXIoHfYCzh2FK7OuvyaO/Q4sHOwwRpGTPKtIkXf1RNFUGjDcrXw0vQpWijGeS1CMgBDD8kqtmAMq9ORw+vCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-23T15:06:16.995880Z","bundle_sha256":"eb249b6227eaaa2658874a3c095caabbdc87fcebfaddb4af67c30bb8832cb4ba"}}