{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:JD4EB5X6MEUWOKL3A3NY3DT2GU","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"48c841576a1ad2f1d36f8af01f364a5138f8f05f31664a34833130881efaa0d5","cross_cats_sorted":["eess.SP","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2022-11-07T14:24:08Z","title_canon_sha256":"71004f66b193e264048ca8ac85104fe1f37dfbbcac1ad59ab98ac486e78dc04e"},"schema_version":"1.0","source":{"id":"2211.03584","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2211.03584","created_at":"2026-07-05T08:20:49Z"},{"alias_kind":"arxiv_version","alias_value":"2211.03584v4","created_at":"2026-07-05T08:20:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2211.03584","created_at":"2026-07-05T08:20:49Z"},{"alias_kind":"pith_short_12","alias_value":"JD4EB5X6MEUW","created_at":"2026-07-05T08:20:49Z"},{"alias_kind":"pith_short_16","alias_value":"JD4EB5X6MEUWOKL3","created_at":"2026-07-05T08:20:49Z"},{"alias_kind":"pith_short_8","alias_value":"JD4EB5X6","created_at":"2026-07-05T08:20:49Z"}],"graph_snapshots":[{"event_id":"sha256:9a70f410bcc8d81b4bdea60feb1b2f22bc8973e738943265aaa956760702f6a5","target":"graph","created_at":"2026-07-05T08:20:49Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2211.03584/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this paper, we consider a prospective receiving hybrid beamforming structure consisting of several radio frequency (RF) chains and abundant antenna elements in multi-input multi-output (MIMO) systems. Due to conventional costly full connections, we design an enhanced partially connected beamformer employing a low-density parity-check (LDPC)-based structure. As a benefit of the LDPC-based structure, information can be exchanged among clustered RF/antenna groups, which results in a low computational complexity order. Advanced message passing (MP) capable of inferring and transferring informat","authors_text":"Kai-Ten Feng, Lie-Liang Yang, Li-Hsiang Shen, Sau-Hsuan Wu, Yen-Chun Lo","cross_cats":["eess.SP","math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2022-11-07T14:24:08Z","title":"MARS: Message Passing for Antenna and RF Chain Selection for Hybrid Beamforming in MIMO Communication Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2211.03584","kind":"arxiv","version":4},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:22522f6c0f9aee473cd4f3e20a2bcd0b85152bcbc85b3d803517fc93443fe24a","target":"record","created_at":"2026-07-05T08:20:49Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"48c841576a1ad2f1d36f8af01f364a5138f8f05f31664a34833130881efaa0d5","cross_cats_sorted":["eess.SP","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2022-11-07T14:24:08Z","title_canon_sha256":"71004f66b193e264048ca8ac85104fe1f37dfbbcac1ad59ab98ac486e78dc04e"},"schema_version":"1.0","source":{"id":"2211.03584","kind":"arxiv","version":4}},"canonical_sha256":"48f840f6fe612967297b06db8d8e7a35064085eeb340a80adb26dbba00680dab","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"48f840f6fe612967297b06db8d8e7a35064085eeb340a80adb26dbba00680dab","first_computed_at":"2026-07-05T08:20:49.280027Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:20:49.280027Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"jOpU5f71putyrAZmWBWNVIcfcadp881Zj8p3oYGEdfbUhQiu7dKuA3MMepj8UH7qy7ypx5QpfEAOxC0+GPmBCg==","signature_status":"signed_v1","signed_at":"2026-07-05T08:20:49.280574Z","signed_message":"canonical_sha256_bytes"},"source_id":"2211.03584","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:22522f6c0f9aee473cd4f3e20a2bcd0b85152bcbc85b3d803517fc93443fe24a","sha256:9a70f410bcc8d81b4bdea60feb1b2f22bc8973e738943265aaa956760702f6a5"],"state_sha256":"b16695dcc00a16537ec4794c7275df605f89ef5802db416d5ed522ccf3cf471b"}