{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:IZ2VVX6R4CNN2LGBARAYLIUQYC","short_pith_number":"pith:IZ2VVX6R","canonical_record":{"source":{"id":"1503.00796","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2015-03-03T01:15:39Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"5ef13acdf006b95c2e680692bbf5a462f0b50c224a6ee28d3572336a304fb816","abstract_canon_sha256":"fcd878b2c39f4f4cf6b067713fb2f0211409d48c5fcb8c6924f2e83f1d857393"},"schema_version":"1.0"},"canonical_sha256":"46755adfd1e09add2cc1044185a290c0b9fd853fa824459f5c7ca1ee310bca3c","source":{"kind":"arxiv","id":"1503.00796","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.00796","created_at":"2026-05-18T02:25:48Z"},{"alias_kind":"arxiv_version","alias_value":"1503.00796v1","created_at":"2026-05-18T02:25:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.00796","created_at":"2026-05-18T02:25:48Z"},{"alias_kind":"pith_short_12","alias_value":"IZ2VVX6R4CNN","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"IZ2VVX6R4CNN2LGB","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"IZ2VVX6R","created_at":"2026-05-18T12:29:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:IZ2VVX6R4CNN2LGBARAYLIUQYC","target":"record","payload":{"canonical_record":{"source":{"id":"1503.00796","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2015-03-03T01:15:39Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"5ef13acdf006b95c2e680692bbf5a462f0b50c224a6ee28d3572336a304fb816","abstract_canon_sha256":"fcd878b2c39f4f4cf6b067713fb2f0211409d48c5fcb8c6924f2e83f1d857393"},"schema_version":"1.0"},"canonical_sha256":"46755adfd1e09add2cc1044185a290c0b9fd853fa824459f5c7ca1ee310bca3c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:25:48.380308Z","signature_b64":"TUtnlykw1w8Wc2pB4SBrZJDpUoYtVrsFRtcyER9YWfVex9Fe4le5YG+ZWUnmcsqvFuH6WCUMOhKKvYqgxd7+Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"46755adfd1e09add2cc1044185a290c0b9fd853fa824459f5c7ca1ee310bca3c","last_reissued_at":"2026-05-18T02:25:48.379875Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:25:48.379875Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1503.00796","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":"2026-05-18T02:25:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NIKvrH4Nt9duNGQp92UgQP/mLQHtVNQgnkdJytMGxqDaQ7mss7YoXPCdwMPIsaDL7rTRJvPLV1PgXe2cbfLSDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T00:59:34.456219Z"},"content_sha256":"36e01000c46d5e4cf38d647e68dcbd06eda0d5060dbc8c401535552451a2caee","schema_version":"1.0","event_id":"sha256:36e01000c46d5e4cf38d647e68dcbd06eda0d5060dbc8c401535552451a2caee"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:IZ2VVX6R4CNN2LGBARAYLIUQYC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"On the Convergence and Performance of MF Precoding in Distributed Massive MU-MIMO Systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Callum T. Neil, Mansoor Shafi, Pawel A. Dmochowski, Peter J. Smith","submitted_at":"2015-03-03T01:15:39Z","abstract_excerpt":"In this paper, we analyze both the rate of convergence and the performance of a matched-filter (MF) precoder in a massive multi-user (MU) multiple-input-multiple-output (MIMO) system, with the aim of determining the impact of distributing the transmit antennas into multiple clusters. We consider cases of transmit spatial correlation, unequal link gains and imperfect channel state information (CSI). Furthermore, we derive a MF signal-to-interference-plus-noise-ratio (SINR) limit as both the number of transmit antennas and the number of users tend to infinity. In our results, we show that both t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.00796","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":"2026-05-18T02:25:48Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UxaN3PnHLIBIEJUPmurZwukj46zu0R+KLcejXgDmDVMeFcA02Yk1c7eVrbf5YRaAIfM6tAdVegya7Ak66/N4Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T00:59:34.456587Z"},"content_sha256":"d2b5f6e628f927e2de104c54e7676c7e4e31d496a62ddce73c94eadaa3944767","schema_version":"1.0","event_id":"sha256:d2b5f6e628f927e2de104c54e7676c7e4e31d496a62ddce73c94eadaa3944767"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IZ2VVX6R4CNN2LGBARAYLIUQYC/bundle.json","state_url":"https://pith.science/pith/IZ2VVX6R4CNN2LGBARAYLIUQYC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IZ2VVX6R4CNN2LGBARAYLIUQYC/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":"2026-06-03T00:59:34Z","links":{"resolver":"https://pith.science/pith/IZ2VVX6R4CNN2LGBARAYLIUQYC","bundle":"https://pith.science/pith/IZ2VVX6R4CNN2LGBARAYLIUQYC/bundle.json","state":"https://pith.science/pith/IZ2VVX6R4CNN2LGBARAYLIUQYC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IZ2VVX6R4CNN2LGBARAYLIUQYC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:IZ2VVX6R4CNN2LGBARAYLIUQYC","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":"fcd878b2c39f4f4cf6b067713fb2f0211409d48c5fcb8c6924f2e83f1d857393","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2015-03-03T01:15:39Z","title_canon_sha256":"5ef13acdf006b95c2e680692bbf5a462f0b50c224a6ee28d3572336a304fb816"},"schema_version":"1.0","source":{"id":"1503.00796","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1503.00796","created_at":"2026-05-18T02:25:48Z"},{"alias_kind":"arxiv_version","alias_value":"1503.00796v1","created_at":"2026-05-18T02:25:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1503.00796","created_at":"2026-05-18T02:25:48Z"},{"alias_kind":"pith_short_12","alias_value":"IZ2VVX6R4CNN","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_16","alias_value":"IZ2VVX6R4CNN2LGB","created_at":"2026-05-18T12:29:27Z"},{"alias_kind":"pith_short_8","alias_value":"IZ2VVX6R","created_at":"2026-05-18T12:29:27Z"}],"graph_snapshots":[{"event_id":"sha256:d2b5f6e628f927e2de104c54e7676c7e4e31d496a62ddce73c94eadaa3944767","target":"graph","created_at":"2026-05-18T02:25:48Z","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 analyze both the rate of convergence and the performance of a matched-filter (MF) precoder in a massive multi-user (MU) multiple-input-multiple-output (MIMO) system, with the aim of determining the impact of distributing the transmit antennas into multiple clusters. We consider cases of transmit spatial correlation, unequal link gains and imperfect channel state information (CSI). Furthermore, we derive a MF signal-to-interference-plus-noise-ratio (SINR) limit as both the number of transmit antennas and the number of users tend to infinity. In our results, we show that both t","authors_text":"Callum T. Neil, Mansoor Shafi, Pawel A. Dmochowski, Peter J. Smith","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2015-03-03T01:15:39Z","title":"On the Convergence and Performance of MF Precoding in Distributed Massive MU-MIMO Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1503.00796","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":"sha256:36e01000c46d5e4cf38d647e68dcbd06eda0d5060dbc8c401535552451a2caee","target":"record","created_at":"2026-05-18T02:25:48Z","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":"fcd878b2c39f4f4cf6b067713fb2f0211409d48c5fcb8c6924f2e83f1d857393","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2015-03-03T01:15:39Z","title_canon_sha256":"5ef13acdf006b95c2e680692bbf5a462f0b50c224a6ee28d3572336a304fb816"},"schema_version":"1.0","source":{"id":"1503.00796","kind":"arxiv","version":1}},"canonical_sha256":"46755adfd1e09add2cc1044185a290c0b9fd853fa824459f5c7ca1ee310bca3c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"46755adfd1e09add2cc1044185a290c0b9fd853fa824459f5c7ca1ee310bca3c","first_computed_at":"2026-05-18T02:25:48.379875Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:25:48.379875Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TUtnlykw1w8Wc2pB4SBrZJDpUoYtVrsFRtcyER9YWfVex9Fe4le5YG+ZWUnmcsqvFuH6WCUMOhKKvYqgxd7+Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:25:48.380308Z","signed_message":"canonical_sha256_bytes"},"source_id":"1503.00796","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:36e01000c46d5e4cf38d647e68dcbd06eda0d5060dbc8c401535552451a2caee","sha256:d2b5f6e628f927e2de104c54e7676c7e4e31d496a62ddce73c94eadaa3944767"],"state_sha256":"c40fceed881688a2c92e7696e036819dad4c12e340681612e1d4ade4afe7c988"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"rgw+Q+JukNtUQNgtAC7iZOqUDoq/7ekCNut+pqy9diKk4dAoLCCMckMUrAdns7W7iMFZ/hn2bebESIsjMRsoCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T00:59:34.458572Z","bundle_sha256":"6c01ac6ed8ee9e7312ff5281974d510829e1e12f5dcb139e874f3af33fd47109"}}