{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:U2SMTKFH2UU55UORR2VKB7VYOS","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":"00b227c5136eb5b481241ac1fe0c1abdd888d06a0e42a9507a412f8a3ec6eaee","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2018-03-01T11:53:54Z","title_canon_sha256":"d92e4396917ab9d71f58a9e0b3455197ecfcee188e8d8dfe7783df5c8c5e3fb1"},"schema_version":"1.0","source":{"id":"1803.00322","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1803.00322","created_at":"2026-05-18T00:00:39Z"},{"alias_kind":"arxiv_version","alias_value":"1803.00322v2","created_at":"2026-05-18T00:00:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1803.00322","created_at":"2026-05-18T00:00:39Z"},{"alias_kind":"pith_short_12","alias_value":"U2SMTKFH2UU5","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_16","alias_value":"U2SMTKFH2UU55UOR","created_at":"2026-05-18T12:32:56Z"},{"alias_kind":"pith_short_8","alias_value":"U2SMTKFH","created_at":"2026-05-18T12:32:56Z"}],"graph_snapshots":[{"event_id":"sha256:fe4117e5a765447751bc0ebb30c948d366f524c79b87f71f7531918e46012519","target":"graph","created_at":"2026-05-18T00:00:39Z","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"},"paper":{"abstract_excerpt":"This paper focuses on the design of low complexity hybrid analog/digital precoding and diversity combining in millimeter wave (mmWave) Internet of things (IoT) systems. Firstly, by exploiting the sparseness property of the mmWave in the angular domain, we propose a spatial lobes division (SLD) to group the total paths of the mmWave channel into several spatial lobes, where the paths in each spatial lobe form a low-rank sub-channel. Secondly, based on the SLD operation, we propose a low complexity hybrid precoding scheme, named HYP-SLD. Specifically, for each low-rank sub-channel, we formulate ","authors_text":"Da Chen, Tao Jiang, Yuan Tian, Yun Chen","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2018-03-01T11:53:54Z","title":"Spatial Lobes Division Based Low Complexity Hybrid Precoding and Diversity Combining for mmWave IoT Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1803.00322","kind":"arxiv","version":2},"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:cf9711021e0cf20392ab6bd2fe82e7a3fde5ad14f53cfda35dbeddeb3ecf86a7","target":"record","created_at":"2026-05-18T00:00:39Z","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":"00b227c5136eb5b481241ac1fe0c1abdd888d06a0e42a9507a412f8a3ec6eaee","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2018-03-01T11:53:54Z","title_canon_sha256":"d92e4396917ab9d71f58a9e0b3455197ecfcee188e8d8dfe7783df5c8c5e3fb1"},"schema_version":"1.0","source":{"id":"1803.00322","kind":"arxiv","version":2}},"canonical_sha256":"a6a4c9a8a7d529ded1d18eaaa0feb874981575be7ee2caeaaa3b3859275bcfd3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a6a4c9a8a7d529ded1d18eaaa0feb874981575be7ee2caeaaa3b3859275bcfd3","first_computed_at":"2026-05-18T00:00:39.737762Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:00:39.737762Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pfejoZtxSUdyPFM6RCFOIV0f3VIpDtD2RXYHtVK2ZP5OC31spijD5QVXpC3mXmjH6g/dlKh2bFmq1+O0GQVyBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:00:39.738202Z","signed_message":"canonical_sha256_bytes"},"source_id":"1803.00322","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cf9711021e0cf20392ab6bd2fe82e7a3fde5ad14f53cfda35dbeddeb3ecf86a7","sha256:fe4117e5a765447751bc0ebb30c948d366f524c79b87f71f7531918e46012519"],"state_sha256":"46446809786642a14df3669f4e3f724173ebade492cfcfb931cf55218157054b"}