{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:K3FASXZ7FFH7JLMAJFGYDE3UMT","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":"91a2d14887d08de64715f417a8fae492e8a5166ae1c5c753d92efd41ef8d098b","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2013-08-21T13:05:28Z","title_canon_sha256":"c95d27d14e7af53e01aa6f3c3a9f9c49b770ee97586d4895c5d293e2b01668d4"},"schema_version":"1.0","source":{"id":"1308.4560","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.4560","created_at":"2026-05-18T03:15:21Z"},{"alias_kind":"arxiv_version","alias_value":"1308.4560v1","created_at":"2026-05-18T03:15:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.4560","created_at":"2026-05-18T03:15:21Z"},{"alias_kind":"pith_short_12","alias_value":"K3FASXZ7FFH7","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_16","alias_value":"K3FASXZ7FFH7JLMA","created_at":"2026-05-18T12:27:49Z"},{"alias_kind":"pith_short_8","alias_value":"K3FASXZ7","created_at":"2026-05-18T12:27:49Z"}],"graph_snapshots":[{"event_id":"sha256:0ed18a36c39011cb46146521079b917cc044e740ca61353ee25d897c86015700","target":"graph","created_at":"2026-05-18T03:15:21Z","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":"In this paper, throughput and energy efficiency of cognitive multiple-input multiple-output (MIMO) systems operating under quality-of-service (QoS) constraints, interference limitations, and imperfect channel sensing, are studied. It is assumed that transmission power and covariance of the input signal vectors are varied depending on the sensed activities of primary users (PUs) in the system. Interference constraints are applied on the transmission power levels of cognitive radios (CRs) to provide protection for the PUs whose activities are modeled as a Markov chain. Considering the reliabilit","authors_text":"Mustafa Cenk Gursoy, Sami Akin","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2013-08-21T13:05:28Z","title":"On the Throughput and Energy Efficiency of Cognitive MIMO Transmissions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.4560","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":"sha256:5430226545831b2b336bee0edd7558629c5a3de2104c6e8935fbae6be7bbfcdb","target":"record","created_at":"2026-05-18T03:15:21Z","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":"91a2d14887d08de64715f417a8fae492e8a5166ae1c5c753d92efd41ef8d098b","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2013-08-21T13:05:28Z","title_canon_sha256":"c95d27d14e7af53e01aa6f3c3a9f9c49b770ee97586d4895c5d293e2b01668d4"},"schema_version":"1.0","source":{"id":"1308.4560","kind":"arxiv","version":1}},"canonical_sha256":"56ca095f3f294ff4ad80494d81937464e1c372a50d7bfd169135c20d227b7ccf","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"56ca095f3f294ff4ad80494d81937464e1c372a50d7bfd169135c20d227b7ccf","first_computed_at":"2026-05-18T03:15:21.645653Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:15:21.645653Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/9NeTlvF/iG0RZD7LZc82+vzwlFtdiuvgRK3MnmrXtWn2bp2wuzj5+AhhF6S+8ROCptRsJuqK1xd+fi6pOCiBg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:15:21.646358Z","signed_message":"canonical_sha256_bytes"},"source_id":"1308.4560","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5430226545831b2b336bee0edd7558629c5a3de2104c6e8935fbae6be7bbfcdb","sha256:0ed18a36c39011cb46146521079b917cc044e740ca61353ee25d897c86015700"],"state_sha256":"4817a44bd18b2aeb0e6c22c32203256210f91584707452977f35d6dd8af8ee93"}