{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2009:VRHBG26URT5STUFLVHFAYQVAOB","short_pith_number":"pith:VRHBG26U","schema_version":"1.0","canonical_sha256":"ac4e136bd48cfb29d0aba9ca0c42a07076d190bdc6854c6e56052f8ab6b5b8bc","source":{"kind":"arxiv","id":"0911.2952","version":2},"attestation_state":"computed","paper":{"title":"Cooperative Feedback for Multi-Antenna Cognitive Radio Networks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Kaibin Huang, Rui Zhang","submitted_at":"2009-11-16T05:09:40Z","abstract_excerpt":"Cognitive beamforming (CB) is a multi-antenna technique for efficient spectrum sharing between primary users (PUs) and secondary users (SUs) in a cognitive radio network. Specifically, a multi-antenna SU transmitter applies CB to suppress the interference to the PU receivers as well as enhance the corresponding SU-link performance. In this paper, for a multiple-input-single-output (MISO) SU channel coexisting with a single-input-single-output (SISO) PU channel, we propose a new and practical paradigm for designing CB based on the finite-rate cooperative feedback from the PU receiver to the SU "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"0911.2952","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2009-11-16T05:09:40Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"bd02188ada59a4d93dcabb2fcbff8b31f9a2cc9b6ddd4e664b333eef815d8508","abstract_canon_sha256":"1ba26151b9f09e80fbcc44f1ca996065f95b7f0d1123d0755ce2e4a143f9d622"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:39:18.362806Z","signature_b64":"KdfOnfuAWIuobNWf6ikMTtzmdRsG7uTVdMLrWLvQ4TYRpGendmofZb019OJFZXNVRmnnS+mV1MhHaplZ9tTACw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ac4e136bd48cfb29d0aba9ca0c42a07076d190bdc6854c6e56052f8ab6b5b8bc","last_reissued_at":"2026-05-18T04:39:18.362149Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:39:18.362149Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Cooperative Feedback for Multi-Antenna Cognitive Radio Networks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Kaibin Huang, Rui Zhang","submitted_at":"2009-11-16T05:09:40Z","abstract_excerpt":"Cognitive beamforming (CB) is a multi-antenna technique for efficient spectrum sharing between primary users (PUs) and secondary users (SUs) in a cognitive radio network. Specifically, a multi-antenna SU transmitter applies CB to suppress the interference to the PU receivers as well as enhance the corresponding SU-link performance. In this paper, for a multiple-input-single-output (MISO) SU channel coexisting with a single-input-single-output (SISO) PU channel, we propose a new and practical paradigm for designing CB based on the finite-rate cooperative feedback from the PU receiver to the SU "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0911.2952","kind":"arxiv","version":2},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"0911.2952","created_at":"2026-05-18T04:39:18.362243+00:00"},{"alias_kind":"arxiv_version","alias_value":"0911.2952v2","created_at":"2026-05-18T04:39:18.362243+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0911.2952","created_at":"2026-05-18T04:39:18.362243+00:00"},{"alias_kind":"pith_short_12","alias_value":"VRHBG26URT5S","created_at":"2026-05-18T12:26:02.257875+00:00"},{"alias_kind":"pith_short_16","alias_value":"VRHBG26URT5STUFL","created_at":"2026-05-18T12:26:02.257875+00:00"},{"alias_kind":"pith_short_8","alias_value":"VRHBG26U","created_at":"2026-05-18T12:26:02.257875+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/VRHBG26URT5STUFLVHFAYQVAOB","json":"https://pith.science/pith/VRHBG26URT5STUFLVHFAYQVAOB.json","graph_json":"https://pith.science/api/pith-number/VRHBG26URT5STUFLVHFAYQVAOB/graph.json","events_json":"https://pith.science/api/pith-number/VRHBG26URT5STUFLVHFAYQVAOB/events.json","paper":"https://pith.science/paper/VRHBG26U"},"agent_actions":{"view_html":"https://pith.science/pith/VRHBG26URT5STUFLVHFAYQVAOB","download_json":"https://pith.science/pith/VRHBG26URT5STUFLVHFAYQVAOB.json","view_paper":"https://pith.science/paper/VRHBG26U","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0911.2952&json=true","fetch_graph":"https://pith.science/api/pith-number/VRHBG26URT5STUFLVHFAYQVAOB/graph.json","fetch_events":"https://pith.science/api/pith-number/VRHBG26URT5STUFLVHFAYQVAOB/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/VRHBG26URT5STUFLVHFAYQVAOB/action/timestamp_anchor","attest_storage":"https://pith.science/pith/VRHBG26URT5STUFLVHFAYQVAOB/action/storage_attestation","attest_author":"https://pith.science/pith/VRHBG26URT5STUFLVHFAYQVAOB/action/author_attestation","sign_citation":"https://pith.science/pith/VRHBG26URT5STUFLVHFAYQVAOB/action/citation_signature","submit_replication":"https://pith.science/pith/VRHBG26URT5STUFLVHFAYQVAOB/action/replication_record"}},"created_at":"2026-05-18T04:39:18.362243+00:00","updated_at":"2026-05-18T04:39:18.362243+00:00"}