{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:43MFCWEB5EGVWQQCSGYTWJGGZH","short_pith_number":"pith:43MFCWEB","schema_version":"1.0","canonical_sha256":"e6d8515881e90d5b420291b13b24c6c9d6b3175d1e513e02e82196a3135e91a8","source":{"kind":"arxiv","id":"1903.12589","version":1},"attestation_state":"computed","paper":{"title":"Coordinated Beam Selection in Millimeter Wave Multi-User MIMO Using Out-of-Band Information","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.IT","math.IT"],"primary_cat":"eess.SP","authors_text":"David Gesbert, Flavio Maschietti, Paul de Kerret","submitted_at":"2019-03-29T16:03:13Z","abstract_excerpt":"Using out-of-band (OOB) side-information has recently been shown to accelerate beam selection in single-user millimeter wave (mmWave) massive MIMO communications. In this paper, we propose a novel OOB-aided beam selection framework for a mmWave uplink multi-user system. In particular, we exploit spatial information extracted from lower (sub-6 GHz) bands in order to assist with an inter-user coordination scheme at mmWave bands. To enforce coordination, we propose an exchange protocol exploiting device-to-device communications, where low-rate beam-related information is exchanged between the mob"},"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":"1903.12589","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-03-29T16:03:13Z","cross_cats_sorted":["cs.IT","math.IT"],"title_canon_sha256":"b07df1f82ebe9cf8eeb4f6e6c93c19abde84490809f6ebd837beb0b1ad1e650a","abstract_canon_sha256":"8c7248fea2f4d01b4308f1edec9f99bdc22145862fe923107c96c78a7b07136b"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:49:53.653432Z","signature_b64":"P0ilp2ndPkvUE+7850ozboOg0ATd7hFsCbshPXi2YBKuszDtTIEQtT5UQgrssvkz8jtlURBYiuLRRVm6JyPPBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e6d8515881e90d5b420291b13b24c6c9d6b3175d1e513e02e82196a3135e91a8","last_reissued_at":"2026-05-17T23:49:53.652999Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:49:53.652999Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Coordinated Beam Selection in Millimeter Wave Multi-User MIMO Using Out-of-Band Information","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.IT","math.IT"],"primary_cat":"eess.SP","authors_text":"David Gesbert, Flavio Maschietti, Paul de Kerret","submitted_at":"2019-03-29T16:03:13Z","abstract_excerpt":"Using out-of-band (OOB) side-information has recently been shown to accelerate beam selection in single-user millimeter wave (mmWave) massive MIMO communications. In this paper, we propose a novel OOB-aided beam selection framework for a mmWave uplink multi-user system. In particular, we exploit spatial information extracted from lower (sub-6 GHz) bands in order to assist with an inter-user coordination scheme at mmWave bands. To enforce coordination, we propose an exchange protocol exploiting device-to-device communications, where low-rate beam-related information is exchanged between the mob"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.12589","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":"1903.12589","created_at":"2026-05-17T23:49:53.653064+00:00"},{"alias_kind":"arxiv_version","alias_value":"1903.12589v1","created_at":"2026-05-17T23:49:53.653064+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.12589","created_at":"2026-05-17T23:49:53.653064+00:00"},{"alias_kind":"pith_short_12","alias_value":"43MFCWEB5EGV","created_at":"2026-05-18T12:33:10.108867+00:00"},{"alias_kind":"pith_short_16","alias_value":"43MFCWEB5EGVWQQC","created_at":"2026-05-18T12:33:10.108867+00:00"},{"alias_kind":"pith_short_8","alias_value":"43MFCWEB","created_at":"2026-05-18T12:33:10.108867+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/43MFCWEB5EGVWQQCSGYTWJGGZH","json":"https://pith.science/pith/43MFCWEB5EGVWQQCSGYTWJGGZH.json","graph_json":"https://pith.science/api/pith-number/43MFCWEB5EGVWQQCSGYTWJGGZH/graph.json","events_json":"https://pith.science/api/pith-number/43MFCWEB5EGVWQQCSGYTWJGGZH/events.json","paper":"https://pith.science/paper/43MFCWEB"},"agent_actions":{"view_html":"https://pith.science/pith/43MFCWEB5EGVWQQCSGYTWJGGZH","download_json":"https://pith.science/pith/43MFCWEB5EGVWQQCSGYTWJGGZH.json","view_paper":"https://pith.science/paper/43MFCWEB","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1903.12589&json=true","fetch_graph":"https://pith.science/api/pith-number/43MFCWEB5EGVWQQCSGYTWJGGZH/graph.json","fetch_events":"https://pith.science/api/pith-number/43MFCWEB5EGVWQQCSGYTWJGGZH/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/43MFCWEB5EGVWQQCSGYTWJGGZH/action/timestamp_anchor","attest_storage":"https://pith.science/pith/43MFCWEB5EGVWQQCSGYTWJGGZH/action/storage_attestation","attest_author":"https://pith.science/pith/43MFCWEB5EGVWQQCSGYTWJGGZH/action/author_attestation","sign_citation":"https://pith.science/pith/43MFCWEB5EGVWQQCSGYTWJGGZH/action/citation_signature","submit_replication":"https://pith.science/pith/43MFCWEB5EGVWQQCSGYTWJGGZH/action/replication_record"}},"created_at":"2026-05-17T23:49:53.653064+00:00","updated_at":"2026-05-17T23:49:53.653064+00:00"}