{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:FRQSOWMREL7KO2SWH247HXOB6Q","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":"413061637dc8efb16b246e83b2aaa273107593cc2d91c281b3d71665d5c22945","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2019-02-08T01:07:41Z","title_canon_sha256":"fb8e4ad979085b9cb804a5d1b159d0ea538ad1b43cf45e08769d84cd068d8738"},"schema_version":"1.0","source":{"id":"1902.02903","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1902.02903","created_at":"2026-05-17T23:42:23Z"},{"alias_kind":"arxiv_version","alias_value":"1902.02903v1","created_at":"2026-05-17T23:42:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.02903","created_at":"2026-05-17T23:42:23Z"},{"alias_kind":"pith_short_12","alias_value":"FRQSOWMREL7K","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_16","alias_value":"FRQSOWMREL7KO2SW","created_at":"2026-05-18T12:33:15Z"},{"alias_kind":"pith_short_8","alias_value":"FRQSOWMR","created_at":"2026-05-18T12:33:15Z"}],"graph_snapshots":[{"event_id":"sha256:365acc89f150cd9384b11d132a8b7435182597e26aafee973a30d5e9956c2ca9","target":"graph","created_at":"2026-05-17T23:42:23Z","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":"In this paper, we study the problem of massive connections over limited radio spectrum for the cellular Internet-of-Things (IoT) in the fifth-generation (5G) wireless network. To address the challenging issues associated with channel state information (CSI) acquisition and beam design in the context of massive connections, we propose a new non-orthogonal beamspace multiple access framework. In particular, the user equipments (UEs) are non-orthogonal not only in the temporal-frequency domain, but also in the beam domain. We analyze the performance of the proposed non-orthogonal beamspace multip","authors_text":"Caijun Zhong, Derrick Wing Kwan Ng, Hai Lin, Rundong Jia, Xiaoming Chen, Zhaoyang Zhang","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2019-02-08T01:07:41Z","title":"Design of Non-Orthogonal Beamspace Multiple Access for Cellular Internet-of-Things"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.02903","kind":"arxiv","version":1},"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":"sha256:71d7b93a18571bfb77a2b3143a42d87cef185f07ab9332f03760f8ab7e1e18b5","target":"record","created_at":"2026-05-17T23:42:23Z","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":"413061637dc8efb16b246e83b2aaa273107593cc2d91c281b3d71665d5c22945","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2019-02-08T01:07:41Z","title_canon_sha256":"fb8e4ad979085b9cb804a5d1b159d0ea538ad1b43cf45e08769d84cd068d8738"},"schema_version":"1.0","source":{"id":"1902.02903","kind":"arxiv","version":1}},"canonical_sha256":"2c6127599122fea76a563eb9f3ddc1f402a8ec3e9fcbf4e2ba1b1b061a43a550","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2c6127599122fea76a563eb9f3ddc1f402a8ec3e9fcbf4e2ba1b1b061a43a550","first_computed_at":"2026-05-17T23:42:23.972323Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:42:23.972323Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+hZzRn+tLhVTvqCMOp6YeZnk1gEqJ2IIdjnykXnmnc81i7S6k1jLJasgwNm7I1ysCWy8NcIA0yoVaF6hUjpdCA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:42:23.973013Z","signed_message":"canonical_sha256_bytes"},"source_id":"1902.02903","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:71d7b93a18571bfb77a2b3143a42d87cef185f07ab9332f03760f8ab7e1e18b5","sha256:365acc89f150cd9384b11d132a8b7435182597e26aafee973a30d5e9956c2ca9"],"state_sha256":"e97ef4fdeea8bc0b600f9b3cd5cb717fd3e48fa9a21f9f3a64bedcfbc7ea26d1"}