{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:5Q2FZNHQHLNFAFQ43IOQSR3JGF","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":"c5a8a9d333851776ae7a7c4d2a410c55f2314e7ac9fdd7d82f73372c1236595c","cross_cats_sorted":["cs.NI","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2016-11-22T17:12:25Z","title_canon_sha256":"026253739b6c27013ba43c5fb1c37992a3ff2ee01635d5a59d20c0bc6cb8f237"},"schema_version":"1.0","source":{"id":"1611.07425","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1611.07425","created_at":"2026-05-18T00:57:20Z"},{"alias_kind":"arxiv_version","alias_value":"1611.07425v1","created_at":"2026-05-18T00:57:20Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1611.07425","created_at":"2026-05-18T00:57:20Z"},{"alias_kind":"pith_short_12","alias_value":"5Q2FZNHQHLNF","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_16","alias_value":"5Q2FZNHQHLNFAFQ4","created_at":"2026-05-18T12:30:01Z"},{"alias_kind":"pith_short_8","alias_value":"5Q2FZNHQ","created_at":"2026-05-18T12:30:01Z"}],"graph_snapshots":[{"event_id":"sha256:3ea37c37d33b36793c4adfd3043b7cbe3ff0852d99413157b5a60f7e061352ff","target":"graph","created_at":"2026-05-18T00:57:20Z","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":"We investigate the application of non-orthogonal multiple access (NOMA) with successive interference cancellation (SIC) in downlink multiuser multiple-input multiple-output (MIMO) cellular systems, where the total number of receive antennas at user equipment (UE) ends in a cell is more than the number of transmit antennas at the base station (BS). We first dynamically group the UE receive antennas into a number of clusters equal to or more than the number of BS transmit antennas. A single beamforming vector is then shared by all the receive antennas in a cluster. We propose a linear beamformin","authors_text":"Dong In Kim, Ekram Hossain, Md Shipon Ali","cross_cats":["cs.NI","math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2016-11-22T17:12:25Z","title":"Non-Orthogonal Multiple Access (NOMA) for Downlink Multiuser MIMO Systems: User Clustering, Beamforming, and Power Allocation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1611.07425","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:e7ca5004b1cf663617d9bd3ba64f9e5e43ab2eb05c87277f58c9bc558b028708","target":"record","created_at":"2026-05-18T00:57:20Z","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":"c5a8a9d333851776ae7a7c4d2a410c55f2314e7ac9fdd7d82f73372c1236595c","cross_cats_sorted":["cs.NI","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2016-11-22T17:12:25Z","title_canon_sha256":"026253739b6c27013ba43c5fb1c37992a3ff2ee01635d5a59d20c0bc6cb8f237"},"schema_version":"1.0","source":{"id":"1611.07425","kind":"arxiv","version":1}},"canonical_sha256":"ec345cb4f03ada50161cda1d094769315883b092accb6b8e30f2a6efc14d6ed9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ec345cb4f03ada50161cda1d094769315883b092accb6b8e30f2a6efc14d6ed9","first_computed_at":"2026-05-18T00:57:20.150902Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:57:20.150902Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WNi9T71ICjIDEq93E1jqIL+X4AcJZbvMPL4qtfSh7/bpL8Soqb86AXWori5R2KClxkmfJgwXElerrjqmtqtBBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:57:20.151509Z","signed_message":"canonical_sha256_bytes"},"source_id":"1611.07425","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e7ca5004b1cf663617d9bd3ba64f9e5e43ab2eb05c87277f58c9bc558b028708","sha256:3ea37c37d33b36793c4adfd3043b7cbe3ff0852d99413157b5a60f7e061352ff"],"state_sha256":"9a625f0f3461fdc02ea34241a2679852a2f0320e55803f0f77496704d8814e13"}