{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:NDWBIKF5TH4LSYMCZ7MJLSLSGK","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":"41697f2cdd8e5b14f630370be9c311d22084e4a8e8a619cc2c542be504ac8ff2","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2019-03-06T10:42:54Z","title_canon_sha256":"6616f721f8e3303b0827ab56d9509490061f32b943adfab3bb5ee70975fbacfc"},"schema_version":"1.0","source":{"id":"1903.02300","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.02300","created_at":"2026-05-17T23:51:56Z"},{"alias_kind":"arxiv_version","alias_value":"1903.02300v1","created_at":"2026-05-17T23:51:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.02300","created_at":"2026-05-17T23:51:56Z"},{"alias_kind":"pith_short_12","alias_value":"NDWBIKF5TH4L","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_16","alias_value":"NDWBIKF5TH4LSYMC","created_at":"2026-05-18T12:33:24Z"},{"alias_kind":"pith_short_8","alias_value":"NDWBIKF5","created_at":"2026-05-18T12:33:24Z"}],"graph_snapshots":[{"event_id":"sha256:d98c4530151de83449d7bed818e3a0feed5fbcece8ee11a1aa80473271fd48ac","target":"graph","created_at":"2026-05-17T23:51:56Z","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 consider device-to-device (D2D) communication that is underlaid in a multi-cell massive multiple-input multiple-output (MIMO) system and propose a new framework for power control and pilot allocation. In this scheme, the cellular users (CUs) in each cell get orthogonal pilots which are reused with reuse factor one across cells, while all the D2D pairs share another set of orthogonal pilots. We derive a closed-form capacity lower bound for the CUs with different receive processing schemes. In addition, we derive a capacity lower bound for the D2D receivers and a closed-form ap","authors_text":"Amin Ghazanfari, Emil Bj\\\"ornson, Erik G. Larsson","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2019-03-06T10:42:54Z","title":"Optimized Power Control for Massive MIMO with Underlaid D2D Communications"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.02300","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":"sha256:2038c4a1c7f5c45545b4ca22d2ee733563572c6282444a7e219e528aa49a4db8","target":"record","created_at":"2026-05-17T23:51:56Z","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":"41697f2cdd8e5b14f630370be9c311d22084e4a8e8a619cc2c542be504ac8ff2","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2019-03-06T10:42:54Z","title_canon_sha256":"6616f721f8e3303b0827ab56d9509490061f32b943adfab3bb5ee70975fbacfc"},"schema_version":"1.0","source":{"id":"1903.02300","kind":"arxiv","version":1}},"canonical_sha256":"68ec1428bd99f8b96182cfd895c97232829b7838a0a5b688f1b792d65d434390","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"68ec1428bd99f8b96182cfd895c97232829b7838a0a5b688f1b792d65d434390","first_computed_at":"2026-05-17T23:51:56.284145Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:51:56.284145Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WDJiOhebOscAu0N4jNDXXGVkPCIzVDZaoR4shvkD9rgCk4Z3jXU6+x2AG26RBTefiaE809tSm59thl3DXFCtBA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:51:56.284634Z","signed_message":"canonical_sha256_bytes"},"source_id":"1903.02300","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2038c4a1c7f5c45545b4ca22d2ee733563572c6282444a7e219e528aa49a4db8","sha256:d98c4530151de83449d7bed818e3a0feed5fbcece8ee11a1aa80473271fd48ac"],"state_sha256":"96c994172db4cd8415a6310d7225bf9544950cb4afca8bacaa760b3dd7ab09aa"}