{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:4XDREGSR34U6HT2T7O626EZFNJ","short_pith_number":"pith:4XDREGSR","canonical_record":{"source":{"id":"2305.05957","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IT","submitted_at":"2023-05-10T08:00:24Z","cross_cats_sorted":["eess.SP","math.IT"],"title_canon_sha256":"0fb241f5f1d88f7218568db70f72f09454b70987160e9108a099984b32cb98ee","abstract_canon_sha256":"a90f8aa09fa7904f5830cdb854d55611897b4e028e61857a023f208080284126"},"schema_version":"1.0"},"canonical_sha256":"e5c7121a51df29e3cf53fbbdaf13256a771a93ae6c7bcad3077b65252c92340c","source":{"kind":"arxiv","id":"2305.05957","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2305.05957","created_at":"2026-07-05T06:08:58Z"},{"alias_kind":"arxiv_version","alias_value":"2305.05957v1","created_at":"2026-07-05T06:08:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2305.05957","created_at":"2026-07-05T06:08:58Z"},{"alias_kind":"pith_short_12","alias_value":"4XDREGSR34U6","created_at":"2026-07-05T06:08:58Z"},{"alias_kind":"pith_short_16","alias_value":"4XDREGSR34U6HT2T","created_at":"2026-07-05T06:08:58Z"},{"alias_kind":"pith_short_8","alias_value":"4XDREGSR","created_at":"2026-07-05T06:08:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:4XDREGSR34U6HT2T7O626EZFNJ","target":"record","payload":{"canonical_record":{"source":{"id":"2305.05957","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IT","submitted_at":"2023-05-10T08:00:24Z","cross_cats_sorted":["eess.SP","math.IT"],"title_canon_sha256":"0fb241f5f1d88f7218568db70f72f09454b70987160e9108a099984b32cb98ee","abstract_canon_sha256":"a90f8aa09fa7904f5830cdb854d55611897b4e028e61857a023f208080284126"},"schema_version":"1.0"},"canonical_sha256":"e5c7121a51df29e3cf53fbbdaf13256a771a93ae6c7bcad3077b65252c92340c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:08:58.110437Z","signature_b64":"4VPFk15uYhB/w6cLzHcb3VZpjIWZ9RZtKBMD3oP5JpaxadnoG6v/79KNaVeYgrFf0EN56WPeAypzeRBaKW4ADQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e5c7121a51df29e3cf53fbbdaf13256a771a93ae6c7bcad3077b65252c92340c","last_reissued_at":"2026-07-05T06:08:58.110076Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:08:58.110076Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2305.05957","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":"2026-07-05T06:08:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hM5LCfNIUyvT1iDGOsghdT2ZZHtcNYWgCZYbQgctVrysitGg7uwjvZfj5Wi/beGY2KjLYSZroQ7ybIk427rWCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-16T12:59:07.349716Z"},"content_sha256":"edb7c808cea454fb17b14157de98a2386207a7975760703489b7d77072f52f4a","schema_version":"1.0","event_id":"sha256:edb7c808cea454fb17b14157de98a2386207a7975760703489b7d77072f52f4a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:4XDREGSR34U6HT2T7O626EZFNJ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"MDD-Enabled Two-Tier Terahertz Fronthaul in Indoor Industrial Cell-Free Massive MIMO","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["eess.SP","math.IT"],"primary_cat":"cs.IT","authors_text":"Bohan Li, Diego Dupleich, Guoqing Xia, Huiyu Zhou, Lie-Liang Yang, Pei Xiao, Yue Zhang","submitted_at":"2023-05-10T08:00:24Z","abstract_excerpt":"To make indoor industrial cell-free massive multiple-input multiple-output (CF-mMIMO) networks free from wired fronthaul, this paper studies a multicarrier-division duplex (MDD)-enabled two-tier terahertz (THz) fronthaul scheme. More specifically, two layers of fronthaul links rely on the mutually orthogonal subcarreir sets in the same THz band, while access links are implemented over sub-6G band. The proposed scheme leads to a complicated mixed-integer nonconvex optimization problem incorporating access point (AP) clustering, device selection, the assignment of subcarrier sets between two fro"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2305.05957","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/2305.05957/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":"2026-07-05T06:08:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"08p3OKGO5+ZdF7nRiIkqJLlIrCU7iHmU5iat/nc7qao39V/4ulTmBH967teZ9CHTXOi2fWmeXYCitBMFZvW/Aw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-16T12:59:07.350097Z"},"content_sha256":"eb95a9467b5421e9c1d4b45559d2fe0c56315e6a62c47fa145f24c465553d89d","schema_version":"1.0","event_id":"sha256:eb95a9467b5421e9c1d4b45559d2fe0c56315e6a62c47fa145f24c465553d89d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4XDREGSR34U6HT2T7O626EZFNJ/bundle.json","state_url":"https://pith.science/pith/4XDREGSR34U6HT2T7O626EZFNJ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4XDREGSR34U6HT2T7O626EZFNJ/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":"2026-07-16T12:59:07Z","links":{"resolver":"https://pith.science/pith/4XDREGSR34U6HT2T7O626EZFNJ","bundle":"https://pith.science/pith/4XDREGSR34U6HT2T7O626EZFNJ/bundle.json","state":"https://pith.science/pith/4XDREGSR34U6HT2T7O626EZFNJ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4XDREGSR34U6HT2T7O626EZFNJ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:4XDREGSR34U6HT2T7O626EZFNJ","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":"a90f8aa09fa7904f5830cdb854d55611897b4e028e61857a023f208080284126","cross_cats_sorted":["eess.SP","math.IT"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IT","submitted_at":"2023-05-10T08:00:24Z","title_canon_sha256":"0fb241f5f1d88f7218568db70f72f09454b70987160e9108a099984b32cb98ee"},"schema_version":"1.0","source":{"id":"2305.05957","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2305.05957","created_at":"2026-07-05T06:08:58Z"},{"alias_kind":"arxiv_version","alias_value":"2305.05957v1","created_at":"2026-07-05T06:08:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2305.05957","created_at":"2026-07-05T06:08:58Z"},{"alias_kind":"pith_short_12","alias_value":"4XDREGSR34U6","created_at":"2026-07-05T06:08:58Z"},{"alias_kind":"pith_short_16","alias_value":"4XDREGSR34U6HT2T","created_at":"2026-07-05T06:08:58Z"},{"alias_kind":"pith_short_8","alias_value":"4XDREGSR","created_at":"2026-07-05T06:08:58Z"}],"graph_snapshots":[{"event_id":"sha256:eb95a9467b5421e9c1d4b45559d2fe0c56315e6a62c47fa145f24c465553d89d","target":"graph","created_at":"2026-07-05T06:08:58Z","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/2305.05957/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"To make indoor industrial cell-free massive multiple-input multiple-output (CF-mMIMO) networks free from wired fronthaul, this paper studies a multicarrier-division duplex (MDD)-enabled two-tier terahertz (THz) fronthaul scheme. More specifically, two layers of fronthaul links rely on the mutually orthogonal subcarreir sets in the same THz band, while access links are implemented over sub-6G band. The proposed scheme leads to a complicated mixed-integer nonconvex optimization problem incorporating access point (AP) clustering, device selection, the assignment of subcarrier sets between two fro","authors_text":"Bohan Li, Diego Dupleich, Guoqing Xia, Huiyu Zhou, Lie-Liang Yang, Pei Xiao, Yue Zhang","cross_cats":["eess.SP","math.IT"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IT","submitted_at":"2023-05-10T08:00:24Z","title":"MDD-Enabled Two-Tier Terahertz Fronthaul in Indoor Industrial Cell-Free Massive MIMO"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2305.05957","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:edb7c808cea454fb17b14157de98a2386207a7975760703489b7d77072f52f4a","target":"record","created_at":"2026-07-05T06:08:58Z","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":"a90f8aa09fa7904f5830cdb854d55611897b4e028e61857a023f208080284126","cross_cats_sorted":["eess.SP","math.IT"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IT","submitted_at":"2023-05-10T08:00:24Z","title_canon_sha256":"0fb241f5f1d88f7218568db70f72f09454b70987160e9108a099984b32cb98ee"},"schema_version":"1.0","source":{"id":"2305.05957","kind":"arxiv","version":1}},"canonical_sha256":"e5c7121a51df29e3cf53fbbdaf13256a771a93ae6c7bcad3077b65252c92340c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e5c7121a51df29e3cf53fbbdaf13256a771a93ae6c7bcad3077b65252c92340c","first_computed_at":"2026-07-05T06:08:58.110076Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:08:58.110076Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4VPFk15uYhB/w6cLzHcb3VZpjIWZ9RZtKBMD3oP5JpaxadnoG6v/79KNaVeYgrFf0EN56WPeAypzeRBaKW4ADQ==","signature_status":"signed_v1","signed_at":"2026-07-05T06:08:58.110437Z","signed_message":"canonical_sha256_bytes"},"source_id":"2305.05957","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:edb7c808cea454fb17b14157de98a2386207a7975760703489b7d77072f52f4a","sha256:eb95a9467b5421e9c1d4b45559d2fe0c56315e6a62c47fa145f24c465553d89d"],"state_sha256":"58ba6a1dc433e4e97be08e934e4064ec5fd93968e37e67a0b6192c61e2e38f26"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tsrd6odH59AOPNDQIjDn6eMoeLRV9CFTYvx8z5DOj5mnuvEj82043osf3QUG5Bu7HYqhGkpxz4+nBcskG7C6Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-16T12:59:07.352305Z","bundle_sha256":"b7d8de5fbcba791b6e269e78fdc1226fe83bd08d2f2e5c1ffc0f121342bd8060"}}