{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:NDWBIKF5TH4LSYMCZ7MJLSLSGK","short_pith_number":"pith:NDWBIKF5","canonical_record":{"source":{"id":"1903.02300","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2019-03-06T10:42:54Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"6616f721f8e3303b0827ab56d9509490061f32b943adfab3bb5ee70975fbacfc","abstract_canon_sha256":"41697f2cdd8e5b14f630370be9c311d22084e4a8e8a619cc2c542be504ac8ff2"},"schema_version":"1.0"},"canonical_sha256":"68ec1428bd99f8b96182cfd895c97232829b7838a0a5b688f1b792d65d434390","source":{"kind":"arxiv","id":"1903.02300","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"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:NDWBIKF5TH4LSYMCZ7MJLSLSGK","target":"record","payload":{"canonical_record":{"source":{"id":"1903.02300","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2019-03-06T10:42:54Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"6616f721f8e3303b0827ab56d9509490061f32b943adfab3bb5ee70975fbacfc","abstract_canon_sha256":"41697f2cdd8e5b14f630370be9c311d22084e4a8e8a619cc2c542be504ac8ff2"},"schema_version":"1.0"},"canonical_sha256":"68ec1428bd99f8b96182cfd895c97232829b7838a0a5b688f1b792d65d434390","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:51:56.284634Z","signature_b64":"WDJiOhebOscAu0N4jNDXXGVkPCIzVDZaoR4shvkD9rgCk4Z3jXU6+x2AG26RBTefiaE809tSm59thl3DXFCtBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"68ec1428bd99f8b96182cfd895c97232829b7838a0a5b688f1b792d65d434390","last_reissued_at":"2026-05-17T23:51:56.284145Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:51:56.284145Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1903.02300","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:51:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hePDNKUcgV0W8BDpqqlWC01i0LcXi0DZ9sSGfNo+hpWCPWTMHTwkwF92TwNNnKgaAgZ2SIpyXzAikIRkQbyRCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T16:50:17.101681Z"},"content_sha256":"2038c4a1c7f5c45545b4ca22d2ee733563572c6282444a7e219e528aa49a4db8","schema_version":"1.0","event_id":"sha256:2038c4a1c7f5c45545b4ca22d2ee733563572c6282444a7e219e528aa49a4db8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:NDWBIKF5TH4LSYMCZ7MJLSLSGK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optimized Power Control for Massive MIMO with Underlaid D2D Communications","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Amin Ghazanfari, Emil Bj\\\"ornson, Erik G. Larsson","submitted_at":"2019-03-06T10:42:54Z","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"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.02300","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:51:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3z6wTnuXC0lT2VdIWp4VToXutgn+8OIykrN3NHVftMFHn/b1RNR+lM9xcgjwgsechtez5BZiWbHQG+SfY+W+AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T16:50:17.102035Z"},"content_sha256":"d98c4530151de83449d7bed818e3a0feed5fbcece8ee11a1aa80473271fd48ac","schema_version":"1.0","event_id":"sha256:d98c4530151de83449d7bed818e3a0feed5fbcece8ee11a1aa80473271fd48ac"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/NDWBIKF5TH4LSYMCZ7MJLSLSGK/bundle.json","state_url":"https://pith.science/pith/NDWBIKF5TH4LSYMCZ7MJLSLSGK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/NDWBIKF5TH4LSYMCZ7MJLSLSGK/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-02T16:50:17Z","links":{"resolver":"https://pith.science/pith/NDWBIKF5TH4LSYMCZ7MJLSLSGK","bundle":"https://pith.science/pith/NDWBIKF5TH4LSYMCZ7MJLSLSGK/bundle.json","state":"https://pith.science/pith/NDWBIKF5TH4LSYMCZ7MJLSLSGK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/NDWBIKF5TH4LSYMCZ7MJLSLSGK/bundle.json"},"state":{"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"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QW8vUYDF0+q0AsaUzPci2tXuyOlt7UFEzJMsL3hyhqqRk8xp5f8dxtvMN9sJGngbr8miREirkCJrBe+bjT0dDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T16:50:17.104124Z","bundle_sha256":"a54e4573b00b671dac7cd01024b3428160de3068739b4dca7171237149baf5ec"}}