{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:POI5BCNXXOQWPA2GP72POGMX4V","short_pith_number":"pith:POI5BCNX","canonical_record":{"source":{"id":"1706.01741","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-06-06T13:11:41Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"212b5dff88c4f840be287cbfb5108a255336c5dc2e79f11552f58dc78a40c4be","abstract_canon_sha256":"4d6caf9c0f13ce812d30d752646fcc0c31f8f4b54e5c85791b1ead778b801fff"},"schema_version":"1.0"},"canonical_sha256":"7b91d089b7bba16783467ff4f71997e549bd7dee2a9a91f55b619521a4a790de","source":{"kind":"arxiv","id":"1706.01741","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.01741","created_at":"2026-05-18T00:42:56Z"},{"alias_kind":"arxiv_version","alias_value":"1706.01741v1","created_at":"2026-05-18T00:42:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.01741","created_at":"2026-05-18T00:42:56Z"},{"alias_kind":"pith_short_12","alias_value":"POI5BCNXXOQW","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"POI5BCNXXOQWPA2G","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"POI5BCNX","created_at":"2026-05-18T12:31:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:POI5BCNXXOQWPA2GP72POGMX4V","target":"record","payload":{"canonical_record":{"source":{"id":"1706.01741","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-06-06T13:11:41Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"212b5dff88c4f840be287cbfb5108a255336c5dc2e79f11552f58dc78a40c4be","abstract_canon_sha256":"4d6caf9c0f13ce812d30d752646fcc0c31f8f4b54e5c85791b1ead778b801fff"},"schema_version":"1.0"},"canonical_sha256":"7b91d089b7bba16783467ff4f71997e549bd7dee2a9a91f55b619521a4a790de","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:42:56.100714Z","signature_b64":"GC2KMTNo8KxyCf2zchqYstT5cqPB1tH5feWn6XbeCyUSG6Ss4NpR5Wsb1sBa2xOss2wwL+EMEhRcdsPza/E9Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7b91d089b7bba16783467ff4f71997e549bd7dee2a9a91f55b619521a4a790de","last_reissued_at":"2026-05-18T00:42:56.100052Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:42:56.100052Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1706.01741","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":"2026-05-18T00:42:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"X6Nte/NOR8ow62yQjwzTAZ2UbUDVHqIaG0RRufOT/MY/b9X1J2x0E+C5h7iNHqzq5rPu0VnLgOcYRMCPTViWBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T12:15:34.336463Z"},"content_sha256":"edfe3268d1e7e4bd5a2cbbec85efe4c0ffcf2b83044d95a3992080560959d201","schema_version":"1.0","event_id":"sha256:edfe3268d1e7e4bd5a2cbbec85efe4c0ffcf2b83044d95a3992080560959d201"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:POI5BCNXXOQWPA2GP72POGMX4V","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Precoder Design for Signal Superposition in MIMO-NOMA Multicell Networks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"and Oh-Soon Shin, Hoang Duong Tuan, H. Vincent Poor, Trung Q. Duong, Van-Dinh Nguyen","submitted_at":"2017-06-06T13:11:41Z","abstract_excerpt":"The throughput of users with poor channel conditions, such as those at a cell edge, is a bottleneck in wireless systems. A major part of the power budget must be allocated to serve these users in guaranteeing their quality-of-service (QoS) requirement, hampering QoS for other users and thus compromising the system reliability. In nonorthogonal multiple access (NOMA), the message intended for a user with a poor channel condition is decoded by itself and by another user with a better channel condition. The message intended for the latter is then successively decoded by itself after canceling the"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.01741","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":"2026-05-18T00:42:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VsYdLXIpb+2i8t9kG4uK6uhnwANuK8pBagk758ZkcJVx3jauVI85a013QuQ7B/RksyUd4+e9OGViCwBNyy1WDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T12:15:34.337136Z"},"content_sha256":"eac9d95f6182b5a33b33c772e2a64c28cd34add21c50d6834bfbaf82a4cd4da6","schema_version":"1.0","event_id":"sha256:eac9d95f6182b5a33b33c772e2a64c28cd34add21c50d6834bfbaf82a4cd4da6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/POI5BCNXXOQWPA2GP72POGMX4V/bundle.json","state_url":"https://pith.science/pith/POI5BCNXXOQWPA2GP72POGMX4V/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/POI5BCNXXOQWPA2GP72POGMX4V/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":"2026-05-27T12:15:34Z","links":{"resolver":"https://pith.science/pith/POI5BCNXXOQWPA2GP72POGMX4V","bundle":"https://pith.science/pith/POI5BCNXXOQWPA2GP72POGMX4V/bundle.json","state":"https://pith.science/pith/POI5BCNXXOQWPA2GP72POGMX4V/state.json","well_known_bundle":"https://pith.science/.well-known/pith/POI5BCNXXOQWPA2GP72POGMX4V/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:POI5BCNXXOQWPA2GP72POGMX4V","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":"4d6caf9c0f13ce812d30d752646fcc0c31f8f4b54e5c85791b1ead778b801fff","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-06-06T13:11:41Z","title_canon_sha256":"212b5dff88c4f840be287cbfb5108a255336c5dc2e79f11552f58dc78a40c4be"},"schema_version":"1.0","source":{"id":"1706.01741","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1706.01741","created_at":"2026-05-18T00:42:56Z"},{"alias_kind":"arxiv_version","alias_value":"1706.01741v1","created_at":"2026-05-18T00:42:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1706.01741","created_at":"2026-05-18T00:42:56Z"},{"alias_kind":"pith_short_12","alias_value":"POI5BCNXXOQW","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_16","alias_value":"POI5BCNXXOQWPA2G","created_at":"2026-05-18T12:31:37Z"},{"alias_kind":"pith_short_8","alias_value":"POI5BCNX","created_at":"2026-05-18T12:31:37Z"}],"graph_snapshots":[{"event_id":"sha256:eac9d95f6182b5a33b33c772e2a64c28cd34add21c50d6834bfbaf82a4cd4da6","target":"graph","created_at":"2026-05-18T00:42:56Z","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":"The throughput of users with poor channel conditions, such as those at a cell edge, is a bottleneck in wireless systems. A major part of the power budget must be allocated to serve these users in guaranteeing their quality-of-service (QoS) requirement, hampering QoS for other users and thus compromising the system reliability. In nonorthogonal multiple access (NOMA), the message intended for a user with a poor channel condition is decoded by itself and by another user with a better channel condition. The message intended for the latter is then successively decoded by itself after canceling the","authors_text":"and Oh-Soon Shin, Hoang Duong Tuan, H. Vincent Poor, Trung Q. Duong, Van-Dinh Nguyen","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-06-06T13:11:41Z","title":"Precoder Design for Signal Superposition in MIMO-NOMA Multicell Networks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1706.01741","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:edfe3268d1e7e4bd5a2cbbec85efe4c0ffcf2b83044d95a3992080560959d201","target":"record","created_at":"2026-05-18T00:42:56Z","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":"4d6caf9c0f13ce812d30d752646fcc0c31f8f4b54e5c85791b1ead778b801fff","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-06-06T13:11:41Z","title_canon_sha256":"212b5dff88c4f840be287cbfb5108a255336c5dc2e79f11552f58dc78a40c4be"},"schema_version":"1.0","source":{"id":"1706.01741","kind":"arxiv","version":1}},"canonical_sha256":"7b91d089b7bba16783467ff4f71997e549bd7dee2a9a91f55b619521a4a790de","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7b91d089b7bba16783467ff4f71997e549bd7dee2a9a91f55b619521a4a790de","first_computed_at":"2026-05-18T00:42:56.100052Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:42:56.100052Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"GC2KMTNo8KxyCf2zchqYstT5cqPB1tH5feWn6XbeCyUSG6Ss4NpR5Wsb1sBa2xOss2wwL+EMEhRcdsPza/E9Bw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:42:56.100714Z","signed_message":"canonical_sha256_bytes"},"source_id":"1706.01741","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:edfe3268d1e7e4bd5a2cbbec85efe4c0ffcf2b83044d95a3992080560959d201","sha256:eac9d95f6182b5a33b33c772e2a64c28cd34add21c50d6834bfbaf82a4cd4da6"],"state_sha256":"19c3beeb30d63140723adde52caef97ea3a90794009d925d9a93eed56f2c89ff"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/mUiGkiIxDk1dKXPPMxXTWt1abDjG7DSLLx1ewqICoIQb03ETjDgYvCfs/VGZsu8+cOd7bGZ8j5/Fwkec+1RDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T12:15:34.340679Z","bundle_sha256":"14567336126d810b364584f71b3bdf937cd6d70d859251ef4ee78ecd783c1be0"}}