{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:53NKEKGJAJG7AA7HOZ2BLHTPDT","short_pith_number":"pith:53NKEKGJ","schema_version":"1.0","canonical_sha256":"eedaa228c9024df003e77674159e6f1cfda10b2f013074dd8b017fb545c4bedf","source":{"kind":"arxiv","id":"1203.4583","version":1},"attestation_state":"computed","paper":{"title":"Multi-Antenna System Design with Bright Transmitters and Blind Receivers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Hamid Jafarkhani, Liangbin Li","submitted_at":"2012-03-20T21:02:02Z","abstract_excerpt":"This paper considers a scenario for multi-input multi-output (MIMO) communication systems when perfect channel state information at the transmitter (CSIT) is given while the equivalent channel state information at the receiver (CSIR) is not available. Such an assumption is valid for the downlink multi-user MIMO systems with linear precoders that depend on channels to all receivers. We propose a concept called dual systems with zero-forcing designs based on the duality principle, originally proposed to relate Gaussian multi-access channels (MACs) and Gaussian broadcast channels (BCs). For the t"},"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":"1203.4583","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2012-03-20T21:02:02Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"fe7218b97894546343f084db69999954778603b5a6c2435d47c546a43b5445fd","abstract_canon_sha256":"ae22877b2114fd9dc7a6b2e6e05fd30eb6729365c9997302e10bcd6358932823"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:59:37.699218Z","signature_b64":"iFgm4qbEMrQmVktlscVYPVp/MSytrwqCf8NHEqWhBOy/B5EaRyL1ksXnfQOVRO2gXAy4SwEYn2TmEsFxgTXWAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"eedaa228c9024df003e77674159e6f1cfda10b2f013074dd8b017fb545c4bedf","last_reissued_at":"2026-05-18T03:59:37.698491Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:59:37.698491Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Multi-Antenna System Design with Bright Transmitters and Blind Receivers","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Hamid Jafarkhani, Liangbin Li","submitted_at":"2012-03-20T21:02:02Z","abstract_excerpt":"This paper considers a scenario for multi-input multi-output (MIMO) communication systems when perfect channel state information at the transmitter (CSIT) is given while the equivalent channel state information at the receiver (CSIR) is not available. Such an assumption is valid for the downlink multi-user MIMO systems with linear precoders that depend on channels to all receivers. We propose a concept called dual systems with zero-forcing designs based on the duality principle, originally proposed to relate Gaussian multi-access channels (MACs) and Gaussian broadcast channels (BCs). For the t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.4583","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1203.4583","created_at":"2026-05-18T03:59:37.698608+00:00"},{"alias_kind":"arxiv_version","alias_value":"1203.4583v1","created_at":"2026-05-18T03:59:37.698608+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.4583","created_at":"2026-05-18T03:59:37.698608+00:00"},{"alias_kind":"pith_short_12","alias_value":"53NKEKGJAJG7","created_at":"2026-05-18T12:26:53.410803+00:00"},{"alias_kind":"pith_short_16","alias_value":"53NKEKGJAJG7AA7H","created_at":"2026-05-18T12:26:53.410803+00:00"},{"alias_kind":"pith_short_8","alias_value":"53NKEKGJ","created_at":"2026-05-18T12:26:53.410803+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/53NKEKGJAJG7AA7HOZ2BLHTPDT","json":"https://pith.science/pith/53NKEKGJAJG7AA7HOZ2BLHTPDT.json","graph_json":"https://pith.science/api/pith-number/53NKEKGJAJG7AA7HOZ2BLHTPDT/graph.json","events_json":"https://pith.science/api/pith-number/53NKEKGJAJG7AA7HOZ2BLHTPDT/events.json","paper":"https://pith.science/paper/53NKEKGJ"},"agent_actions":{"view_html":"https://pith.science/pith/53NKEKGJAJG7AA7HOZ2BLHTPDT","download_json":"https://pith.science/pith/53NKEKGJAJG7AA7HOZ2BLHTPDT.json","view_paper":"https://pith.science/paper/53NKEKGJ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1203.4583&json=true","fetch_graph":"https://pith.science/api/pith-number/53NKEKGJAJG7AA7HOZ2BLHTPDT/graph.json","fetch_events":"https://pith.science/api/pith-number/53NKEKGJAJG7AA7HOZ2BLHTPDT/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/53NKEKGJAJG7AA7HOZ2BLHTPDT/action/timestamp_anchor","attest_storage":"https://pith.science/pith/53NKEKGJAJG7AA7HOZ2BLHTPDT/action/storage_attestation","attest_author":"https://pith.science/pith/53NKEKGJAJG7AA7HOZ2BLHTPDT/action/author_attestation","sign_citation":"https://pith.science/pith/53NKEKGJAJG7AA7HOZ2BLHTPDT/action/citation_signature","submit_replication":"https://pith.science/pith/53NKEKGJAJG7AA7HOZ2BLHTPDT/action/replication_record"}},"created_at":"2026-05-18T03:59:37.698608+00:00","updated_at":"2026-05-18T03:59:37.698608+00:00"}