{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:MAI3ATOB3SPOT32LA5AUKKIHMG","short_pith_number":"pith:MAI3ATOB","canonical_record":{"source":{"id":"2409.11928","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2024-09-18T12:41:40Z","cross_cats_sorted":[],"title_canon_sha256":"52c501dd4d7a13cb56b2bda2ab08770e385715c643b81519f0f3dfa84b43ceb9","abstract_canon_sha256":"bdfc5fcf8c255b5d7e47bfe62b846a34fad33136681b44ae7ac377d6d87c4be4"},"schema_version":"1.0"},"canonical_sha256":"6011b04dc1dc9ee9ef4b074145290761ac7b7290da3007583c71535c85f7a589","source":{"kind":"arxiv","id":"2409.11928","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2409.11928","created_at":"2026-07-05T10:55:23Z"},{"alias_kind":"arxiv_version","alias_value":"2409.11928v1","created_at":"2026-07-05T10:55:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2409.11928","created_at":"2026-07-05T10:55:23Z"},{"alias_kind":"pith_short_12","alias_value":"MAI3ATOB3SPO","created_at":"2026-07-05T10:55:23Z"},{"alias_kind":"pith_short_16","alias_value":"MAI3ATOB3SPOT32L","created_at":"2026-07-05T10:55:23Z"},{"alias_kind":"pith_short_8","alias_value":"MAI3ATOB","created_at":"2026-07-05T10:55:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:MAI3ATOB3SPOT32LA5AUKKIHMG","target":"record","payload":{"canonical_record":{"source":{"id":"2409.11928","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2024-09-18T12:41:40Z","cross_cats_sorted":[],"title_canon_sha256":"52c501dd4d7a13cb56b2bda2ab08770e385715c643b81519f0f3dfa84b43ceb9","abstract_canon_sha256":"bdfc5fcf8c255b5d7e47bfe62b846a34fad33136681b44ae7ac377d6d87c4be4"},"schema_version":"1.0"},"canonical_sha256":"6011b04dc1dc9ee9ef4b074145290761ac7b7290da3007583c71535c85f7a589","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:55:23.563500Z","signature_b64":"cMV1WPxzFg7yH6nKMPqFD3SbPdHZOqSUEm8z63EsQuHpUP5OrxgCLnsK9xtCm0V2zq7z54uRIprR+eUtQxM0Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6011b04dc1dc9ee9ef4b074145290761ac7b7290da3007583c71535c85f7a589","last_reissued_at":"2026-07-05T10:55:23.563005Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:55:23.563005Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2409.11928","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":"2026-07-05T10:55:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cpC1ftf7EpYmOqhnG4aRDcBCpHlMJkaWLNJLnWw9dXUb9jBl8LIN9bUkLQEbkyGc+5mTrKutNW4Bmme4oF81DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T19:01:38.828655Z"},"content_sha256":"90167e7f98eb3d35ed86788bb7e3b92b52c8bc21aba182772f4ee312a448b17c","schema_version":"1.0","event_id":"sha256:90167e7f98eb3d35ed86788bb7e3b92b52c8bc21aba182772f4ee312a448b17c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:MAI3ATOB3SPOT32LA5AUKKIHMG","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Atmospheric Turbulence-Immune Free Space Optical Communication System based on Discrete-Time Analog Transmission","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"Hongyu Huang, Kun Xu, Shanguo Huang, Wei Zhang, Yi Lei, Yongli Zhao, Zhenming Yu","submitted_at":"2024-09-18T12:41:40Z","abstract_excerpt":"To effectively mitigate the influence of atmospheric turbulence, a novel discrete-time analog transmission free-space optical (DTAT-FSO) communication scheme is proposed. It directly maps information sources to discrete-time analog symbols via joint source-channel coding and modulation. Differently from traditional digital free space optical (TD-FSO) schemes, the proposed DTAT-FSO approach can automatically adapt to the variation of the channel state, with no need to adjust the specific modulation and coding scheme. The performance of the DTAT-FSO system was evaluated in both intensity modulat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2409.11928","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2409.11928/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T10:55:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"evi+hWQqIKwcjHJxt2V6bxCkFvWO1TscH/7SDZ6rirNhwT0V1xXo3zM1W3I2RCg19qR3jw6hSkBukIc+qsJbBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-14T19:01:38.829188Z"},"content_sha256":"b3693faaadfd6c8a3adfa2a9718be17ed5f550a09e58c589c5e24992082da3c7","schema_version":"1.0","event_id":"sha256:b3693faaadfd6c8a3adfa2a9718be17ed5f550a09e58c589c5e24992082da3c7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MAI3ATOB3SPOT32LA5AUKKIHMG/bundle.json","state_url":"https://pith.science/pith/MAI3ATOB3SPOT32LA5AUKKIHMG/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MAI3ATOB3SPOT32LA5AUKKIHMG/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":"2026-08-14T19:01:38Z","links":{"resolver":"https://pith.science/pith/MAI3ATOB3SPOT32LA5AUKKIHMG","bundle":"https://pith.science/pith/MAI3ATOB3SPOT32LA5AUKKIHMG/bundle.json","state":"https://pith.science/pith/MAI3ATOB3SPOT32LA5AUKKIHMG/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MAI3ATOB3SPOT32LA5AUKKIHMG/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:MAI3ATOB3SPOT32LA5AUKKIHMG","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":"bdfc5fcf8c255b5d7e47bfe62b846a34fad33136681b44ae7ac377d6d87c4be4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2024-09-18T12:41:40Z","title_canon_sha256":"52c501dd4d7a13cb56b2bda2ab08770e385715c643b81519f0f3dfa84b43ceb9"},"schema_version":"1.0","source":{"id":"2409.11928","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2409.11928","created_at":"2026-07-05T10:55:23Z"},{"alias_kind":"arxiv_version","alias_value":"2409.11928v1","created_at":"2026-07-05T10:55:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2409.11928","created_at":"2026-07-05T10:55:23Z"},{"alias_kind":"pith_short_12","alias_value":"MAI3ATOB3SPO","created_at":"2026-07-05T10:55:23Z"},{"alias_kind":"pith_short_16","alias_value":"MAI3ATOB3SPOT32L","created_at":"2026-07-05T10:55:23Z"},{"alias_kind":"pith_short_8","alias_value":"MAI3ATOB","created_at":"2026-07-05T10:55:23Z"}],"graph_snapshots":[{"event_id":"sha256:b3693faaadfd6c8a3adfa2a9718be17ed5f550a09e58c589c5e24992082da3c7","target":"graph","created_at":"2026-07-05T10:55:23Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2409.11928/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"To effectively mitigate the influence of atmospheric turbulence, a novel discrete-time analog transmission free-space optical (DTAT-FSO) communication scheme is proposed. It directly maps information sources to discrete-time analog symbols via joint source-channel coding and modulation. Differently from traditional digital free space optical (TD-FSO) schemes, the proposed DTAT-FSO approach can automatically adapt to the variation of the channel state, with no need to adjust the specific modulation and coding scheme. The performance of the DTAT-FSO system was evaluated in both intensity modulat","authors_text":"Hongyu Huang, Kun Xu, Shanguo Huang, Wei Zhang, Yi Lei, Yongli Zhao, Zhenming Yu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2024-09-18T12:41:40Z","title":"Atmospheric Turbulence-Immune Free Space Optical Communication System based on Discrete-Time Analog Transmission"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2409.11928","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":"sha256:90167e7f98eb3d35ed86788bb7e3b92b52c8bc21aba182772f4ee312a448b17c","target":"record","created_at":"2026-07-05T10:55:23Z","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":"bdfc5fcf8c255b5d7e47bfe62b846a34fad33136681b44ae7ac377d6d87c4be4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2024-09-18T12:41:40Z","title_canon_sha256":"52c501dd4d7a13cb56b2bda2ab08770e385715c643b81519f0f3dfa84b43ceb9"},"schema_version":"1.0","source":{"id":"2409.11928","kind":"arxiv","version":1}},"canonical_sha256":"6011b04dc1dc9ee9ef4b074145290761ac7b7290da3007583c71535c85f7a589","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6011b04dc1dc9ee9ef4b074145290761ac7b7290da3007583c71535c85f7a589","first_computed_at":"2026-07-05T10:55:23.563005Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:55:23.563005Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"cMV1WPxzFg7yH6nKMPqFD3SbPdHZOqSUEm8z63EsQuHpUP5OrxgCLnsK9xtCm0V2zq7z54uRIprR+eUtQxM0Aw==","signature_status":"signed_v1","signed_at":"2026-07-05T10:55:23.563500Z","signed_message":"canonical_sha256_bytes"},"source_id":"2409.11928","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:90167e7f98eb3d35ed86788bb7e3b92b52c8bc21aba182772f4ee312a448b17c","sha256:b3693faaadfd6c8a3adfa2a9718be17ed5f550a09e58c589c5e24992082da3c7"],"state_sha256":"ede3845407c7427dba1d938be723474169fb20407666d1eb57f6d2743be41a82"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f+SWKzONw7yo0NuhCcLazjw9isAVk2Q5tOzzQE5POneR5e4r0Ki5wkZshzKDu8x04mJQFf5Zynwxv+uZzDvWAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-14T19:01:38.840009Z","bundle_sha256":"605d7a83a84538d65ba831b2825e03ded865e58b7564127b113669029bb79d2c"}}