{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:PACI44SPU5RBY7356NLF5PC4SJ","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":"4f9b9de82317cc6709ee32620b197c4db5800a69ff904f4661af1644037a6586","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-03-22T18:37:23Z","title_canon_sha256":"5f79c4d758542ecd1470c60643adf67248fce22a4bc055b4081eefa96894a08e"},"schema_version":"1.0","source":{"id":"1303.5683","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.5683","created_at":"2026-05-18T03:30:03Z"},{"alias_kind":"arxiv_version","alias_value":"1303.5683v1","created_at":"2026-05-18T03:30:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.5683","created_at":"2026-05-18T03:30:03Z"},{"alias_kind":"pith_short_12","alias_value":"PACI44SPU5RB","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"PACI44SPU5RBY735","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"PACI44SP","created_at":"2026-05-18T12:27:54Z"}],"graph_snapshots":[{"event_id":"sha256:c9f3e3d4e1155422dbdb94688c94e021ce5f892249dcc0200d6996d6a5f18d38","target":"graph","created_at":"2026-05-18T03:30:03Z","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 composite impulse radio ultra-wideband (IR-UWB) communication system is presented. The proposed system model aims to transmit UWB pulses over several kilometers through free-space optical (FSO) links and depending on the link design, the electrical estimates of the FSO system can be directly used or distributed to end-user through radio-frequency (RF) links over short ranges. However, inhomogeneities on the FSO transmission path cause random fluctuations in the received signal intensity and these effects induced by atmospheric turbulence closely effect the system performance. Several distinc","authors_text":"Kemal Davaslioglu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-03-22T18:37:23Z","title":"Impulse Radio Ultra-Wideband Communication Over Free-Space Optical Links"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.5683","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:f4f056451e86daa5ced2506fb56ad25b19c77381daee8ab5a41f7de7f4d056f3","target":"record","created_at":"2026-05-18T03:30:03Z","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":"4f9b9de82317cc6709ee32620b197c4db5800a69ff904f4661af1644037a6586","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.optics","submitted_at":"2013-03-22T18:37:23Z","title_canon_sha256":"5f79c4d758542ecd1470c60643adf67248fce22a4bc055b4081eefa96894a08e"},"schema_version":"1.0","source":{"id":"1303.5683","kind":"arxiv","version":1}},"canonical_sha256":"78048e724fa7621c7f7df3565ebc5c924747810b076a049c6f396cba430ded63","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"78048e724fa7621c7f7df3565ebc5c924747810b076a049c6f396cba430ded63","first_computed_at":"2026-05-18T03:30:03.509055Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:30:03.509055Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+wevkViYZit4gqM101XhoUQ7MTkCAnu9lV8HixrXlONuu1X266asZJ4obXKw52HQILm+CqO3uC4SUAmJl2DVAg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:30:03.509705Z","signed_message":"canonical_sha256_bytes"},"source_id":"1303.5683","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f4f056451e86daa5ced2506fb56ad25b19c77381daee8ab5a41f7de7f4d056f3","sha256:c9f3e3d4e1155422dbdb94688c94e021ce5f892249dcc0200d6996d6a5f18d38"],"state_sha256":"0ea82caa978da3fd5cce232b28614f19a58ef0ef7d569ed76184092cec0e1364"}