{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:UKO3M2YO6XEW35YXFNDGYNQNEV","short_pith_number":"pith:UKO3M2YO","canonical_record":{"source":{"id":"2212.07333","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2022-12-14T16:54:21Z","cross_cats_sorted":["eess.SP","math.IT"],"title_canon_sha256":"8b9ff67a27c5e7f1318c5de7c4473547ebd8d13affcea7e9f16274b25929b76a","abstract_canon_sha256":"421694c7a1d28d06b124cb14682f0b654ade4a4863862ac10e7c833ed82cc636"},"schema_version":"1.0"},"canonical_sha256":"a29db66b0ef5c96df7172b466c360d2563e3a8a97971d4a631478d79e058bba8","source":{"kind":"arxiv","id":"2212.07333","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2212.07333","created_at":"2026-07-05T06:04:35Z"},{"alias_kind":"arxiv_version","alias_value":"2212.07333v2","created_at":"2026-07-05T06:04:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2212.07333","created_at":"2026-07-05T06:04:35Z"},{"alias_kind":"pith_short_12","alias_value":"UKO3M2YO6XEW","created_at":"2026-07-05T06:04:35Z"},{"alias_kind":"pith_short_16","alias_value":"UKO3M2YO6XEW35YX","created_at":"2026-07-05T06:04:35Z"},{"alias_kind":"pith_short_8","alias_value":"UKO3M2YO","created_at":"2026-07-05T06:04:35Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:UKO3M2YO6XEW35YXFNDGYNQNEV","target":"record","payload":{"canonical_record":{"source":{"id":"2212.07333","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2022-12-14T16:54:21Z","cross_cats_sorted":["eess.SP","math.IT"],"title_canon_sha256":"8b9ff67a27c5e7f1318c5de7c4473547ebd8d13affcea7e9f16274b25929b76a","abstract_canon_sha256":"421694c7a1d28d06b124cb14682f0b654ade4a4863862ac10e7c833ed82cc636"},"schema_version":"1.0"},"canonical_sha256":"a29db66b0ef5c96df7172b466c360d2563e3a8a97971d4a631478d79e058bba8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:04:35.647097Z","signature_b64":"S/do/RlQcVdrKnRuxMUcMbIOvZfL2+0dRRA/VF6pk+hyoK6YFDr6T2O4pa6rbq0wC1r0Z2kUOejLupxgnWyODQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a29db66b0ef5c96df7172b466c360d2563e3a8a97971d4a631478d79e058bba8","last_reissued_at":"2026-07-05T06:04:35.646671Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:04:35.646671Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2212.07333","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T06:04:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GnkhXsxV7a7IEedD+C/244Ac2mELus+8Voe20CoxBl/lA3Q9kzNqT5usw+VpTRPmq1NEaR2zLVKqFBPmyj83AQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T09:21:13.172720Z"},"content_sha256":"5fdf0bd1d8d6b788302acfee2c2d50b4de1c72c50bf9781943dbfd1e58b96b72","schema_version":"1.0","event_id":"sha256:5fdf0bd1d8d6b788302acfee2c2d50b4de1c72c50bf9781943dbfd1e58b96b72"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:UKO3M2YO6XEW35YXFNDGYNQNEV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Two-Timescale Joint Precoding Design and RIS Optimization for User Tracking in Near-Field MIMO Systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["eess.SP","math.IT"],"primary_cat":"cs.IT","authors_text":"Andrea Abrardo, Anna Guerra, Davide Dardari, Silvia Palmucci","submitted_at":"2022-12-14T16:54:21Z","abstract_excerpt":"In this paper, we propose a novel framework that aims to jointly design the reflection coefficients of multiple RISs and the precoding strategy of a single BS to optimize the self-tracking of the position and the velocity of a single multi-antenna UE that moves either in the far- or near-field region. Differently from the literature, and to keep the overall complexity affordable, we assume that RIS optimization is performed less frequently than localization and precoding adaptation. The proposed procedure leads to minimize the inverse of the received power in the UE position uncertainty area b"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2212.07333","kind":"arxiv","version":2},"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/2212.07333/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":"2026-07-05T06:04:35Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Ey+mj0a9qB9pBL0vx1XnjDgnofLsgDlKmt011zI3HE6j5cR6XglHbJYvNTxtYuqw3lwI0P20EePucWkxKirKAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T09:21:13.173098Z"},"content_sha256":"5773ae3cee9a1e2cff7277254033d65df4aea36c0de1d2ebe85f0ecc2646a26c","schema_version":"1.0","event_id":"sha256:5773ae3cee9a1e2cff7277254033d65df4aea36c0de1d2ebe85f0ecc2646a26c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/UKO3M2YO6XEW35YXFNDGYNQNEV/bundle.json","state_url":"https://pith.science/pith/UKO3M2YO6XEW35YXFNDGYNQNEV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/UKO3M2YO6XEW35YXFNDGYNQNEV/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":"2026-07-06T09:21:13Z","links":{"resolver":"https://pith.science/pith/UKO3M2YO6XEW35YXFNDGYNQNEV","bundle":"https://pith.science/pith/UKO3M2YO6XEW35YXFNDGYNQNEV/bundle.json","state":"https://pith.science/pith/UKO3M2YO6XEW35YXFNDGYNQNEV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/UKO3M2YO6XEW35YXFNDGYNQNEV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:UKO3M2YO6XEW35YXFNDGYNQNEV","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":"421694c7a1d28d06b124cb14682f0b654ade4a4863862ac10e7c833ed82cc636","cross_cats_sorted":["eess.SP","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2022-12-14T16:54:21Z","title_canon_sha256":"8b9ff67a27c5e7f1318c5de7c4473547ebd8d13affcea7e9f16274b25929b76a"},"schema_version":"1.0","source":{"id":"2212.07333","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2212.07333","created_at":"2026-07-05T06:04:35Z"},{"alias_kind":"arxiv_version","alias_value":"2212.07333v2","created_at":"2026-07-05T06:04:35Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2212.07333","created_at":"2026-07-05T06:04:35Z"},{"alias_kind":"pith_short_12","alias_value":"UKO3M2YO6XEW","created_at":"2026-07-05T06:04:35Z"},{"alias_kind":"pith_short_16","alias_value":"UKO3M2YO6XEW35YX","created_at":"2026-07-05T06:04:35Z"},{"alias_kind":"pith_short_8","alias_value":"UKO3M2YO","created_at":"2026-07-05T06:04:35Z"}],"graph_snapshots":[{"event_id":"sha256:5773ae3cee9a1e2cff7277254033d65df4aea36c0de1d2ebe85f0ecc2646a26c","target":"graph","created_at":"2026-07-05T06:04:35Z","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/2212.07333/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this paper, we propose a novel framework that aims to jointly design the reflection coefficients of multiple RISs and the precoding strategy of a single BS to optimize the self-tracking of the position and the velocity of a single multi-antenna UE that moves either in the far- or near-field region. Differently from the literature, and to keep the overall complexity affordable, we assume that RIS optimization is performed less frequently than localization and precoding adaptation. The proposed procedure leads to minimize the inverse of the received power in the UE position uncertainty area b","authors_text":"Andrea Abrardo, Anna Guerra, Davide Dardari, Silvia Palmucci","cross_cats":["eess.SP","math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2022-12-14T16:54:21Z","title":"Two-Timescale Joint Precoding Design and RIS Optimization for User Tracking in Near-Field MIMO Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2212.07333","kind":"arxiv","version":2},"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":"sha256:5fdf0bd1d8d6b788302acfee2c2d50b4de1c72c50bf9781943dbfd1e58b96b72","target":"record","created_at":"2026-07-05T06:04:35Z","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":"421694c7a1d28d06b124cb14682f0b654ade4a4863862ac10e7c833ed82cc636","cross_cats_sorted":["eess.SP","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2022-12-14T16:54:21Z","title_canon_sha256":"8b9ff67a27c5e7f1318c5de7c4473547ebd8d13affcea7e9f16274b25929b76a"},"schema_version":"1.0","source":{"id":"2212.07333","kind":"arxiv","version":2}},"canonical_sha256":"a29db66b0ef5c96df7172b466c360d2563e3a8a97971d4a631478d79e058bba8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a29db66b0ef5c96df7172b466c360d2563e3a8a97971d4a631478d79e058bba8","first_computed_at":"2026-07-05T06:04:35.646671Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:04:35.646671Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"S/do/RlQcVdrKnRuxMUcMbIOvZfL2+0dRRA/VF6pk+hyoK6YFDr6T2O4pa6rbq0wC1r0Z2kUOejLupxgnWyODQ==","signature_status":"signed_v1","signed_at":"2026-07-05T06:04:35.647097Z","signed_message":"canonical_sha256_bytes"},"source_id":"2212.07333","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:5fdf0bd1d8d6b788302acfee2c2d50b4de1c72c50bf9781943dbfd1e58b96b72","sha256:5773ae3cee9a1e2cff7277254033d65df4aea36c0de1d2ebe85f0ecc2646a26c"],"state_sha256":"2957be0370b8054455187de001625fd512ae3c06f00fa764625cc956255312d2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oD9dBjvgBfvyZL3DsN9kQZf2fAJuZJI3I2ixb7Iv23AXw7to+dO6BMZnD72GlOxD27UZh05xrKmn3UbynsrBAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T09:21:13.175059Z","bundle_sha256":"b17aaadc5ef07be911534940ba103230e16e1f74ad7eba3ff0c881bd359f1675"}}