{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:NWKOMZHL2K7X6GWVXOP5OOXESG","short_pith_number":"pith:NWKOMZHL","schema_version":"1.0","canonical_sha256":"6d94e664ebd2bf7f1ad5bb9fd73ae4919ec98a4f84c19b60e37e8403519e3807","source":{"kind":"arxiv","id":"1803.00342","version":1},"attestation_state":"computed","paper":{"title":"Hybrid Precoding Based on Non-Uniform Quantization Codebook to Reduce Feedback Overhead in Millimeter Wave MIMO Systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Da Chen, Tao Jiang, Yun Chen","submitted_at":"2018-03-01T12:37:20Z","abstract_excerpt":"In this paper, we focus on the design of the hybrid analog/digital precoding in millimeter wave multiple-input multiple-output (MIMO) systems. To reduce the feedback overhead, we propose two non-uniform quantization (NUQ) codebook based hybrid precoding schemes for two main hybrid precoding implementations, i.e., the full-connected structure and the sub-connected structure. Specifically, we firstly group the angles of the arrive/departure (AOAs/AODs) of the scattering paths into several spatial lobes by exploiting the sparseness property of the millimeter wave in the angular domain, which divi"},"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":"1803.00342","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2018-03-01T12:37:20Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"b57c28af104bce47f3004eeafdfb92e6cd0025818b787725866a67c5140c7e3d","abstract_canon_sha256":"fa3c79c5bc14bd8d5b665ed92297817355706059bda7661e4a15f8d3afd62521"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:57:07.663241Z","signature_b64":"CqSUuikB8vxoOC1LO7jPzWoOSInAkE5PSrF490ojrrh94ARfiNZV154KzhpPD2DcrTzcxp4krcG2P3eVRIYYAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6d94e664ebd2bf7f1ad5bb9fd73ae4919ec98a4f84c19b60e37e8403519e3807","last_reissued_at":"2026-05-17T23:57:07.662726Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:57:07.662726Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Hybrid Precoding Based on Non-Uniform Quantization Codebook to Reduce Feedback Overhead in Millimeter Wave MIMO Systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Da Chen, Tao Jiang, Yun Chen","submitted_at":"2018-03-01T12:37:20Z","abstract_excerpt":"In this paper, we focus on the design of the hybrid analog/digital precoding in millimeter wave multiple-input multiple-output (MIMO) systems. To reduce the feedback overhead, we propose two non-uniform quantization (NUQ) codebook based hybrid precoding schemes for two main hybrid precoding implementations, i.e., the full-connected structure and the sub-connected structure. Specifically, we firstly group the angles of the arrive/departure (AOAs/AODs) of the scattering paths into several spatial lobes by exploiting the sparseness property of the millimeter wave in the angular domain, which divi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.00342","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":"1803.00342","created_at":"2026-05-17T23:57:07.662807+00:00"},{"alias_kind":"arxiv_version","alias_value":"1803.00342v1","created_at":"2026-05-17T23:57:07.662807+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.00342","created_at":"2026-05-17T23:57:07.662807+00:00"},{"alias_kind":"pith_short_12","alias_value":"NWKOMZHL2K7X","created_at":"2026-05-18T12:32:40.477152+00:00"},{"alias_kind":"pith_short_16","alias_value":"NWKOMZHL2K7X6GWV","created_at":"2026-05-18T12:32:40.477152+00:00"},{"alias_kind":"pith_short_8","alias_value":"NWKOMZHL","created_at":"2026-05-18T12:32:40.477152+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/NWKOMZHL2K7X6GWVXOP5OOXESG","json":"https://pith.science/pith/NWKOMZHL2K7X6GWVXOP5OOXESG.json","graph_json":"https://pith.science/api/pith-number/NWKOMZHL2K7X6GWVXOP5OOXESG/graph.json","events_json":"https://pith.science/api/pith-number/NWKOMZHL2K7X6GWVXOP5OOXESG/events.json","paper":"https://pith.science/paper/NWKOMZHL"},"agent_actions":{"view_html":"https://pith.science/pith/NWKOMZHL2K7X6GWVXOP5OOXESG","download_json":"https://pith.science/pith/NWKOMZHL2K7X6GWVXOP5OOXESG.json","view_paper":"https://pith.science/paper/NWKOMZHL","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1803.00342&json=true","fetch_graph":"https://pith.science/api/pith-number/NWKOMZHL2K7X6GWVXOP5OOXESG/graph.json","fetch_events":"https://pith.science/api/pith-number/NWKOMZHL2K7X6GWVXOP5OOXESG/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/NWKOMZHL2K7X6GWVXOP5OOXESG/action/timestamp_anchor","attest_storage":"https://pith.science/pith/NWKOMZHL2K7X6GWVXOP5OOXESG/action/storage_attestation","attest_author":"https://pith.science/pith/NWKOMZHL2K7X6GWVXOP5OOXESG/action/author_attestation","sign_citation":"https://pith.science/pith/NWKOMZHL2K7X6GWVXOP5OOXESG/action/citation_signature","submit_replication":"https://pith.science/pith/NWKOMZHL2K7X6GWVXOP5OOXESG/action/replication_record"}},"created_at":"2026-05-17T23:57:07.662807+00:00","updated_at":"2026-05-17T23:57:07.662807+00:00"}