{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:2SOZ6MYSW2PBAOESJTCRQWZ7YI","short_pith_number":"pith:2SOZ6MYS","canonical_record":{"source":{"id":"1803.10258","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-03-14T22:50:57Z","cross_cats_sorted":[],"title_canon_sha256":"5a5f7cb1c0d0004d7a707546550a36f84b06c724471af844fdc47e4b1e134710","abstract_canon_sha256":"67045f2057f3359c143a630c1e9b96b755f751e232296ff4ad8ddbb5c567c644"},"schema_version":"1.0"},"canonical_sha256":"d49d9f3312b69e1038924cc5185b3fc21d3741e90e49f848b4f3ea49a1b4c022","source":{"kind":"arxiv","id":"1803.10258","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.10258","created_at":"2026-05-18T00:19:56Z"},{"alias_kind":"arxiv_version","alias_value":"1803.10258v1","created_at":"2026-05-18T00:19:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.10258","created_at":"2026-05-18T00:19:56Z"},{"alias_kind":"pith_short_12","alias_value":"2SOZ6MYSW2PB","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_16","alias_value":"2SOZ6MYSW2PBAOES","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_8","alias_value":"2SOZ6MYS","created_at":"2026-05-18T12:32:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:2SOZ6MYSW2PBAOESJTCRQWZ7YI","target":"record","payload":{"canonical_record":{"source":{"id":"1803.10258","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-03-14T22:50:57Z","cross_cats_sorted":[],"title_canon_sha256":"5a5f7cb1c0d0004d7a707546550a36f84b06c724471af844fdc47e4b1e134710","abstract_canon_sha256":"67045f2057f3359c143a630c1e9b96b755f751e232296ff4ad8ddbb5c567c644"},"schema_version":"1.0"},"canonical_sha256":"d49d9f3312b69e1038924cc5185b3fc21d3741e90e49f848b4f3ea49a1b4c022","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:19:56.011135Z","signature_b64":"TQDmIOJqmPTDK2/E/QNKbXywgP+5RLwqTIbye8K+5jTVtZT+F02BMRR8pMbjC7tyZrHeMWFb9HBKqsg77NBwDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d49d9f3312b69e1038924cc5185b3fc21d3741e90e49f848b4f3ea49a1b4c022","last_reissued_at":"2026-05-18T00:19:56.010506Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:19:56.010506Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1803.10258","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":"2026-05-18T00:19:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"6oNJVfNiinlwnFBAWvJf/BrfG6KkBhjLZ98YEsc/Yv7uHjRg/3WwsrlFpLdMune5Izyow5jpD3YQ4bFQSdsECQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T09:52:37.639419Z"},"content_sha256":"55234a533c2326b3c72b3cbd982a3302f5ebc044b9c61b171861205d0091ae15","schema_version":"1.0","event_id":"sha256:55234a533c2326b3c72b3cbd982a3302f5ebc044b9c61b171861205d0091ae15"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:2SOZ6MYSW2PBAOESJTCRQWZ7YI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Cooperation in NOMA Networks Under Limited User-to-User Communications: Solution and Analysis","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"Dac-Binh Ha, Duc-Dung Tran, Georges Kaddoum, Ha-Vu Tran","submitted_at":"2018-03-14T22:50:57Z","abstract_excerpt":"This paper proposes a new communication protocol for a cooperative non-orthogonal multiple access (NOMA) system. In this system, based on users' channel conditions, each two NOMA users are paired to reduce system complexity. In this concern, the user with a better channel condition decodes and then forwards messages received from the source to the user with a worse channel condition. In particular, the direct link between the paired users is assumed to be unavailable due to the weak transmission conditions. To overcome this issue, we propose a new cooperative NOMA protocol in which an amplify-"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.10258","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":"2026-05-18T00:19:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OTQmG70oWSZzDyMfSol7bbi/7H5fezqf1RJtjHYgOn8JH6lAfMLYqYWM0xCKOKmmEdpqdcUkhvd40/L2/L9iBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T09:52:37.640182Z"},"content_sha256":"5f927fef5b15c1cc30f83c0a1a75482f44ca4380d1a6b68ba09cdf1a32e83b99","schema_version":"1.0","event_id":"sha256:5f927fef5b15c1cc30f83c0a1a75482f44ca4380d1a6b68ba09cdf1a32e83b99"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2SOZ6MYSW2PBAOESJTCRQWZ7YI/bundle.json","state_url":"https://pith.science/pith/2SOZ6MYSW2PBAOESJTCRQWZ7YI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2SOZ6MYSW2PBAOESJTCRQWZ7YI/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":"2026-06-10T09:52:37Z","links":{"resolver":"https://pith.science/pith/2SOZ6MYSW2PBAOESJTCRQWZ7YI","bundle":"https://pith.science/pith/2SOZ6MYSW2PBAOESJTCRQWZ7YI/bundle.json","state":"https://pith.science/pith/2SOZ6MYSW2PBAOESJTCRQWZ7YI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2SOZ6MYSW2PBAOESJTCRQWZ7YI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:2SOZ6MYSW2PBAOESJTCRQWZ7YI","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":"67045f2057f3359c143a630c1e9b96b755f751e232296ff4ad8ddbb5c567c644","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-03-14T22:50:57Z","title_canon_sha256":"5a5f7cb1c0d0004d7a707546550a36f84b06c724471af844fdc47e4b1e134710"},"schema_version":"1.0","source":{"id":"1803.10258","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.10258","created_at":"2026-05-18T00:19:56Z"},{"alias_kind":"arxiv_version","alias_value":"1803.10258v1","created_at":"2026-05-18T00:19:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.10258","created_at":"2026-05-18T00:19:56Z"},{"alias_kind":"pith_short_12","alias_value":"2SOZ6MYSW2PB","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_16","alias_value":"2SOZ6MYSW2PBAOES","created_at":"2026-05-18T12:32:02Z"},{"alias_kind":"pith_short_8","alias_value":"2SOZ6MYS","created_at":"2026-05-18T12:32:02Z"}],"graph_snapshots":[{"event_id":"sha256:5f927fef5b15c1cc30f83c0a1a75482f44ca4380d1a6b68ba09cdf1a32e83b99","target":"graph","created_at":"2026-05-18T00:19:56Z","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 paper proposes a new communication protocol for a cooperative non-orthogonal multiple access (NOMA) system. In this system, based on users' channel conditions, each two NOMA users are paired to reduce system complexity. In this concern, the user with a better channel condition decodes and then forwards messages received from the source to the user with a worse channel condition. In particular, the direct link between the paired users is assumed to be unavailable due to the weak transmission conditions. To overcome this issue, we propose a new cooperative NOMA protocol in which an amplify-","authors_text":"Dac-Binh Ha, Duc-Dung Tran, Georges Kaddoum, Ha-Vu Tran","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-03-14T22:50:57Z","title":"Cooperation in NOMA Networks Under Limited User-to-User Communications: Solution and Analysis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.10258","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":"sha256:55234a533c2326b3c72b3cbd982a3302f5ebc044b9c61b171861205d0091ae15","target":"record","created_at":"2026-05-18T00:19:56Z","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":"67045f2057f3359c143a630c1e9b96b755f751e232296ff4ad8ddbb5c567c644","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-03-14T22:50:57Z","title_canon_sha256":"5a5f7cb1c0d0004d7a707546550a36f84b06c724471af844fdc47e4b1e134710"},"schema_version":"1.0","source":{"id":"1803.10258","kind":"arxiv","version":1}},"canonical_sha256":"d49d9f3312b69e1038924cc5185b3fc21d3741e90e49f848b4f3ea49a1b4c022","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d49d9f3312b69e1038924cc5185b3fc21d3741e90e49f848b4f3ea49a1b4c022","first_computed_at":"2026-05-18T00:19:56.010506Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:19:56.010506Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TQDmIOJqmPTDK2/E/QNKbXywgP+5RLwqTIbye8K+5jTVtZT+F02BMRR8pMbjC7tyZrHeMWFb9HBKqsg77NBwDw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:19:56.011135Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.10258","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:55234a533c2326b3c72b3cbd982a3302f5ebc044b9c61b171861205d0091ae15","sha256:5f927fef5b15c1cc30f83c0a1a75482f44ca4380d1a6b68ba09cdf1a32e83b99"],"state_sha256":"7f18e31fcdfff15d8e96c1da29adf80aa196ecf3b9caf6cb11787ba5f8c6c5d0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+CGgwTa03V53bFcX0FH8jTsDpeynWWPSd7OzdX1CoG4FtKr4kb+ttoTRehxQRKLJOf8JEJnBNVybscrP+sG3BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T09:52:37.644528Z","bundle_sha256":"40f233897cac1cb56c2463906a7146fb3a1590bd1292bf8103d32d5adc194f2a"}}