{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:QKH2AJ53LQAM7WQ22ZUC2447DB","short_pith_number":"pith:QKH2AJ53","canonical_record":{"source":{"id":"2607.02917","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SP","submitted_at":"2026-07-03T03:23:29Z","cross_cats_sorted":[],"title_canon_sha256":"196e1063b4e765ac6e1c76d355b269ad74184c8bd12cdeed533fc4c216bb161a","abstract_canon_sha256":"82e77c898b746f87d26d76f797da5016c27c1f30b14f6f8641921a953b12a4d1"},"schema_version":"1.0"},"canonical_sha256":"828fa027bb5c00cfda1ad6682d739f187a051727d2f4e027538a42fe8da4496d","source":{"kind":"arxiv","id":"2607.02917","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.02917","created_at":"2026-07-07T01:16:36Z"},{"alias_kind":"arxiv_version","alias_value":"2607.02917v1","created_at":"2026-07-07T01:16:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.02917","created_at":"2026-07-07T01:16:36Z"},{"alias_kind":"pith_short_12","alias_value":"QKH2AJ53LQAM","created_at":"2026-07-07T01:16:36Z"},{"alias_kind":"pith_short_16","alias_value":"QKH2AJ53LQAM7WQ2","created_at":"2026-07-07T01:16:36Z"},{"alias_kind":"pith_short_8","alias_value":"QKH2AJ53","created_at":"2026-07-07T01:16:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:QKH2AJ53LQAM7WQ22ZUC2447DB","target":"record","payload":{"canonical_record":{"source":{"id":"2607.02917","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SP","submitted_at":"2026-07-03T03:23:29Z","cross_cats_sorted":[],"title_canon_sha256":"196e1063b4e765ac6e1c76d355b269ad74184c8bd12cdeed533fc4c216bb161a","abstract_canon_sha256":"82e77c898b746f87d26d76f797da5016c27c1f30b14f6f8641921a953b12a4d1"},"schema_version":"1.0"},"canonical_sha256":"828fa027bb5c00cfda1ad6682d739f187a051727d2f4e027538a42fe8da4496d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-07T01:16:36.408908Z","signature_b64":"yInBNYADVkykCuZevM//t3CEZajvYt4gKirJcDprKL6VFhtlyM//7egIFSUElJO622pF1/eMniF+T50+KFxvDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"828fa027bb5c00cfda1ad6682d739f187a051727d2f4e027538a42fe8da4496d","last_reissued_at":"2026-07-07T01:16:36.408474Z","signature_status":"signed_v1","first_computed_at":"2026-07-07T01:16:36.408474Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2607.02917","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":"2026-07-07T01:16:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ljXlspYPpYG34grxNQ6r9RO9AL6DkXAC2Hr1u7HJmtFT2yGPQXkfSe+i69Pnmql6vAXxqECNFahVHPVmQCmhBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T00:54:56.947745Z"},"content_sha256":"55b64b411b85659baa684c1a1db110a932c422e8a23ede64f915f1103216f99d","schema_version":"1.0","event_id":"sha256:55b64b411b85659baa684c1a1db110a932c422e8a23ede64f915f1103216f99d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:QKH2AJ53LQAM7WQ22ZUC2447DB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Asymptotically Optimal Local Receiver in Uplink CF-mMIMO: A Functional-Variational Analysis","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"Dongming Wang, Jiafei Fu, Pengcheng Zhu, Peng Jiang","submitted_at":"2026-07-03T03:23:29Z","abstract_excerpt":"In cell-free massive multiple-input multiple-output (CF-mMIMO) systems, the canonical uplink local receiver is the local minimum mean square error (LMMSE) receiver with large-scale fading decoding (LSFD) at the central processing unit (CPU). The LSFD coefficients are derived under the use-and-then-forget (UatF) lower bound of the ergodic rate, and computing these coefficients introduces additional fronthaul overhead and computational complexity at the CPU. This paper investigates local receiver design directly from the true ergodic-rate objective under perfect local channel state information ("},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.02917","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2607.02917/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-07T01:16:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sF69sm6Odf0e+O+4l+mmyk1NWznEYltdP+J5TkP+zJB/L8DmIbMEUpsLf+gg4MsPyiSQlfzLEJQVHj7yIIoTDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-07T00:54:56.948726Z"},"content_sha256":"7f6fe6029cc32e60659db77d70c55e592ed830270c9df1ee7e5ec219006af4f6","schema_version":"1.0","event_id":"sha256:7f6fe6029cc32e60659db77d70c55e592ed830270c9df1ee7e5ec219006af4f6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QKH2AJ53LQAM7WQ22ZUC2447DB/bundle.json","state_url":"https://pith.science/pith/QKH2AJ53LQAM7WQ22ZUC2447DB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QKH2AJ53LQAM7WQ22ZUC2447DB/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":"2026-08-07T00:54:56Z","links":{"resolver":"https://pith.science/pith/QKH2AJ53LQAM7WQ22ZUC2447DB","bundle":"https://pith.science/pith/QKH2AJ53LQAM7WQ22ZUC2447DB/bundle.json","state":"https://pith.science/pith/QKH2AJ53LQAM7WQ22ZUC2447DB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QKH2AJ53LQAM7WQ22ZUC2447DB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:QKH2AJ53LQAM7WQ22ZUC2447DB","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":"82e77c898b746f87d26d76f797da5016c27c1f30b14f6f8641921a953b12a4d1","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SP","submitted_at":"2026-07-03T03:23:29Z","title_canon_sha256":"196e1063b4e765ac6e1c76d355b269ad74184c8bd12cdeed533fc4c216bb161a"},"schema_version":"1.0","source":{"id":"2607.02917","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2607.02917","created_at":"2026-07-07T01:16:36Z"},{"alias_kind":"arxiv_version","alias_value":"2607.02917v1","created_at":"2026-07-07T01:16:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2607.02917","created_at":"2026-07-07T01:16:36Z"},{"alias_kind":"pith_short_12","alias_value":"QKH2AJ53LQAM","created_at":"2026-07-07T01:16:36Z"},{"alias_kind":"pith_short_16","alias_value":"QKH2AJ53LQAM7WQ2","created_at":"2026-07-07T01:16:36Z"},{"alias_kind":"pith_short_8","alias_value":"QKH2AJ53","created_at":"2026-07-07T01:16:36Z"}],"graph_snapshots":[{"event_id":"sha256:7f6fe6029cc32e60659db77d70c55e592ed830270c9df1ee7e5ec219006af4f6","target":"graph","created_at":"2026-07-07T01:16:36Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2607.02917/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In cell-free massive multiple-input multiple-output (CF-mMIMO) systems, the canonical uplink local receiver is the local minimum mean square error (LMMSE) receiver with large-scale fading decoding (LSFD) at the central processing unit (CPU). The LSFD coefficients are derived under the use-and-then-forget (UatF) lower bound of the ergodic rate, and computing these coefficients introduces additional fronthaul overhead and computational complexity at the CPU. This paper investigates local receiver design directly from the true ergodic-rate objective under perfect local channel state information (","authors_text":"Dongming Wang, Jiafei Fu, Pengcheng Zhu, Peng Jiang","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SP","submitted_at":"2026-07-03T03:23:29Z","title":"Asymptotically Optimal Local Receiver in Uplink CF-mMIMO: A Functional-Variational Analysis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2607.02917","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":"sha256:55b64b411b85659baa684c1a1db110a932c422e8a23ede64f915f1103216f99d","target":"record","created_at":"2026-07-07T01:16:36Z","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":"82e77c898b746f87d26d76f797da5016c27c1f30b14f6f8641921a953b12a4d1","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SP","submitted_at":"2026-07-03T03:23:29Z","title_canon_sha256":"196e1063b4e765ac6e1c76d355b269ad74184c8bd12cdeed533fc4c216bb161a"},"schema_version":"1.0","source":{"id":"2607.02917","kind":"arxiv","version":1}},"canonical_sha256":"828fa027bb5c00cfda1ad6682d739f187a051727d2f4e027538a42fe8da4496d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"828fa027bb5c00cfda1ad6682d739f187a051727d2f4e027538a42fe8da4496d","first_computed_at":"2026-07-07T01:16:36.408474Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-07T01:16:36.408474Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yInBNYADVkykCuZevM//t3CEZajvYt4gKirJcDprKL6VFhtlyM//7egIFSUElJO622pF1/eMniF+T50+KFxvDQ==","signature_status":"signed_v1","signed_at":"2026-07-07T01:16:36.408908Z","signed_message":"canonical_sha256_bytes"},"source_id":"2607.02917","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:55b64b411b85659baa684c1a1db110a932c422e8a23ede64f915f1103216f99d","sha256:7f6fe6029cc32e60659db77d70c55e592ed830270c9df1ee7e5ec219006af4f6"],"state_sha256":"a3cdf24cbd61d68248a10963a960e08bd08b4d60f1c32b67ef6d39004cdbf97e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QYWb2s8SHXB0wuBbwArCWC91SwPY6oMqtN3Nez1MvqcDMC1enWeVnIEZmNVIMS/iIO7I1MOuo2IrSIwu7PuACQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-07T00:54:56.969208Z","bundle_sha256":"27f6285e598afbd531c337140696b5cf7deb51aa3e08457a5c04da0aeff2c7d6"}}