{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2022:HB6HJP5GE336S3S5HPZKA343ZD","short_pith_number":"pith:HB6HJP5G","schema_version":"1.0","canonical_sha256":"387c74bfa626f7e96e5d3bf2a06f9bc8e25331911513197817290a8638d91baa","source":{"kind":"arxiv","id":"2208.06622","version":1},"attestation_state":"computed","paper":{"title":"RIS-Aided Angular-Based Hybrid Beamforming Design in mmWave Massive MIMO Systems","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["eess.SP","math.IT"],"primary_cat":"cs.IT","authors_text":"Asil Koc, Ertugrul Basar, Ibrahim Yildirim, Tho Le-Ngoc","submitted_at":"2022-08-13T10:47:46Z","abstract_excerpt":"This paper proposes a reconfigurable intelligent surface (RIS)-aided and angular-based hybrid beamforming (AB-HBF) technique for the millimeter wave (mmWave) massive multiple-input multiple-output (MIMO) systems. The proposed RIS-AB-HBF architecture consists of three stages: (i) RF beamformer, (ii) baseband (BB) precoder/combiner, and (iii) RIS phase shift design. First, in order to reduce the number of RF chains and the channel estimation overhead, RF beamformers are designed based on the 3D geometry-based mmWave channel model using slow time-varying angular parameters of the channel. Second,"},"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":"2208.06622","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IT","submitted_at":"2022-08-13T10:47:46Z","cross_cats_sorted":["eess.SP","math.IT"],"title_canon_sha256":"17571d78548a0aaf9298d906478c5b9f6c45db0d4189f05cc4a3859b1fa54afa","abstract_canon_sha256":"cb63c657f258e98be9088e9c0afb737772afb2a12b74daf7d5d550998e43817d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:48:18.709027Z","signature_b64":"rv/QTeeTqNRKWd7OA4ksd9iek5OvTE7kA0OlDxmv1O7NmD1uiTtluHu5LF/XBWpy4HK1bGdSFcbUj8cgtFoCDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"387c74bfa626f7e96e5d3bf2a06f9bc8e25331911513197817290a8638d91baa","last_reissued_at":"2026-07-05T04:48:18.708606Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:48:18.708606Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"RIS-Aided Angular-Based Hybrid Beamforming Design in mmWave Massive MIMO Systems","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["eess.SP","math.IT"],"primary_cat":"cs.IT","authors_text":"Asil Koc, Ertugrul Basar, Ibrahim Yildirim, Tho Le-Ngoc","submitted_at":"2022-08-13T10:47:46Z","abstract_excerpt":"This paper proposes a reconfigurable intelligent surface (RIS)-aided and angular-based hybrid beamforming (AB-HBF) technique for the millimeter wave (mmWave) massive multiple-input multiple-output (MIMO) systems. The proposed RIS-AB-HBF architecture consists of three stages: (i) RF beamformer, (ii) baseband (BB) precoder/combiner, and (iii) RIS phase shift design. First, in order to reduce the number of RF chains and the channel estimation overhead, RF beamformers are designed based on the 3D geometry-based mmWave channel model using slow time-varying angular parameters of the channel. Second,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2208.06622","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2208.06622/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2208.06622","created_at":"2026-07-05T04:48:18.708662+00:00"},{"alias_kind":"arxiv_version","alias_value":"2208.06622v1","created_at":"2026-07-05T04:48:18.708662+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2208.06622","created_at":"2026-07-05T04:48:18.708662+00:00"},{"alias_kind":"pith_short_12","alias_value":"HB6HJP5GE336","created_at":"2026-07-05T04:48:18.708662+00:00"},{"alias_kind":"pith_short_16","alias_value":"HB6HJP5GE336S3S5","created_at":"2026-07-05T04:48:18.708662+00:00"},{"alias_kind":"pith_short_8","alias_value":"HB6HJP5G","created_at":"2026-07-05T04:48:18.708662+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/HB6HJP5GE336S3S5HPZKA343ZD","json":"https://pith.science/pith/HB6HJP5GE336S3S5HPZKA343ZD.json","graph_json":"https://pith.science/api/pith-number/HB6HJP5GE336S3S5HPZKA343ZD/graph.json","events_json":"https://pith.science/api/pith-number/HB6HJP5GE336S3S5HPZKA343ZD/events.json","paper":"https://pith.science/paper/HB6HJP5G"},"agent_actions":{"view_html":"https://pith.science/pith/HB6HJP5GE336S3S5HPZKA343ZD","download_json":"https://pith.science/pith/HB6HJP5GE336S3S5HPZKA343ZD.json","view_paper":"https://pith.science/paper/HB6HJP5G","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2208.06622&json=true","fetch_graph":"https://pith.science/api/pith-number/HB6HJP5GE336S3S5HPZKA343ZD/graph.json","fetch_events":"https://pith.science/api/pith-number/HB6HJP5GE336S3S5HPZKA343ZD/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/HB6HJP5GE336S3S5HPZKA343ZD/action/timestamp_anchor","attest_storage":"https://pith.science/pith/HB6HJP5GE336S3S5HPZKA343ZD/action/storage_attestation","attest_author":"https://pith.science/pith/HB6HJP5GE336S3S5HPZKA343ZD/action/author_attestation","sign_citation":"https://pith.science/pith/HB6HJP5GE336S3S5HPZKA343ZD/action/citation_signature","submit_replication":"https://pith.science/pith/HB6HJP5GE336S3S5HPZKA343ZD/action/replication_record"}},"created_at":"2026-07-05T04:48:18.708662+00:00","updated_at":"2026-07-05T04:48:18.708662+00:00"}