{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:QVJAEUFXGXPZTVRC2WRDA7TSQ5","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":"390b0a4911d3878d0b3382a05d7cdb2033db1e2452df6f9010790b422cc02cf4","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2018-08-21T04:19:48Z","title_canon_sha256":"093f41a9b06052b26aa65fb431c3586ba192f9b7b23f51cef06a83c786cc4dd3"},"schema_version":"1.0","source":{"id":"1808.06761","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.06761","created_at":"2026-05-18T00:07:39Z"},{"alias_kind":"arxiv_version","alias_value":"1808.06761v1","created_at":"2026-05-18T00:07:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.06761","created_at":"2026-05-18T00:07:39Z"},{"alias_kind":"pith_short_12","alias_value":"QVJAEUFXGXPZ","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_16","alias_value":"QVJAEUFXGXPZTVRC","created_at":"2026-05-18T12:32:46Z"},{"alias_kind":"pith_short_8","alias_value":"QVJAEUFX","created_at":"2026-05-18T12:32:46Z"}],"graph_snapshots":[{"event_id":"sha256:47ee2166a8451eeb8c4df0ba32e97b672ce85d2e1c467ce7c209e802dc60db71","target":"graph","created_at":"2026-05-18T00:07:39Z","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 provides an analytical performance characterization of both uplink (UL) and downlink (DL) user-centric network multiple-input multiple-output (MIMO) systems, where a cooperating BS cluster is formed for each user individually and the clusters for different users may overlap. In this model, cooperating BSs (each equipped with multiple antennas) jointly perform zero-forcing beamforming to the set of single-antenna users associated with them. As compared to a baseline network MIMO systems with disjoint BS clusters, the effect of user-centric clustering is that it improves signal streng","authors_text":"Caiyi Zhu, Wei Yu","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2018-08-21T04:19:48Z","title":"Stochastic Modeling and Analysis of User-Centric Network MIMO Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.06761","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":"sha256:046c4382bdc75d5d462e0befa70916044074e2d439dd9fd2e1ddaec983dfc0ff","target":"record","created_at":"2026-05-18T00:07:39Z","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":"390b0a4911d3878d0b3382a05d7cdb2033db1e2452df6f9010790b422cc02cf4","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2018-08-21T04:19:48Z","title_canon_sha256":"093f41a9b06052b26aa65fb431c3586ba192f9b7b23f51cef06a83c786cc4dd3"},"schema_version":"1.0","source":{"id":"1808.06761","kind":"arxiv","version":1}},"canonical_sha256":"85520250b735df99d622d5a2307e72876696606ece25ad882c458824fd05d1f9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"85520250b735df99d622d5a2307e72876696606ece25ad882c458824fd05d1f9","first_computed_at":"2026-05-18T00:07:39.182941Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:07:39.182941Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4BgVbEFCdAXlMy0t31OdsUaYKaKROQIPUExPkC6+DYL8K5VoNq8iBIzriOzpDSXSo/RsR5PBVtqF3aNjsowECw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:07:39.183461Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.06761","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:046c4382bdc75d5d462e0befa70916044074e2d439dd9fd2e1ddaec983dfc0ff","sha256:47ee2166a8451eeb8c4df0ba32e97b672ce85d2e1c467ce7c209e802dc60db71"],"state_sha256":"9e12f25d390a2233a5a2d7929804889c16538c673af0a86d5f94011a1a8ace8c"}