{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:PMJ72VKLYHIER63XL6IYOAY3QH","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":"0ad6830cd1f02fb322745fba50100b2e8723924a3698f7ca60816f5c5c3fbe7c","cross_cats_sorted":["eess.IV"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SP","submitted_at":"2025-05-07T02:54:00Z","title_canon_sha256":"83c789be044ffa753f3a72945828f3843e8b8aae8969f4fe4344b1548f5a135a"},"schema_version":"1.0","source":{"id":"2505.04085","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2505.04085","created_at":"2026-06-09T01:04:38Z"},{"alias_kind":"arxiv_version","alias_value":"2505.04085v2","created_at":"2026-06-09T01:04:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2505.04085","created_at":"2026-06-09T01:04:38Z"},{"alias_kind":"pith_short_12","alias_value":"PMJ72VKLYHIE","created_at":"2026-06-09T01:04:38Z"},{"alias_kind":"pith_short_16","alias_value":"PMJ72VKLYHIER63X","created_at":"2026-06-09T01:04:38Z"},{"alias_kind":"pith_short_8","alias_value":"PMJ72VKL","created_at":"2026-06-09T01:04:38Z"}],"graph_snapshots":[{"event_id":"sha256:307e8d10b14419e550518d2d4819223a81a06c831978a166077cce800093d19c","target":"graph","created_at":"2026-06-09T01:04:38Z","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/2505.04085/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Targeting integrated sensing and communication (ISAC) in future 6G radio access networks (RANs), this paper presents a novel device-free localization (DFL) framework based on distributed antenna networks (DANs). In the proposed approach, radio tomographic imaging (RTI) leverages the spatial and temporal diversity of multi-link multiple-input multiple-output (MIMO) channels in DANs to achieve accurate localization. Furthermore, a prototype system was developed using software-defined radios (SDRs) operating in the sub-6 GHz band, and comprehensive evaluations were conducted under indoor conditio","authors_text":"Gesi Teng, Keita Nishi, Masamune Sato, Minseok Kim, Togo Ikegami","cross_cats":["eess.IV"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SP","submitted_at":"2025-05-07T02:54:00Z","title":"Device-Free Localization Using Multi-Link MIMO Channels in Distributed Antenna Networks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2505.04085","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:ff3f1dc47e34dfb787a4d334188e9cc4f173bcf9c68e53a0f7700638c20ca5b7","target":"record","created_at":"2026-06-09T01:04:38Z","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":"0ad6830cd1f02fb322745fba50100b2e8723924a3698f7ca60816f5c5c3fbe7c","cross_cats_sorted":["eess.IV"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SP","submitted_at":"2025-05-07T02:54:00Z","title_canon_sha256":"83c789be044ffa753f3a72945828f3843e8b8aae8969f4fe4344b1548f5a135a"},"schema_version":"1.0","source":{"id":"2505.04085","kind":"arxiv","version":2}},"canonical_sha256":"7b13fd554bc1d048fb775f9187031b81f360ed5c4d65719427c11eedd8043c6c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7b13fd554bc1d048fb775f9187031b81f360ed5c4d65719427c11eedd8043c6c","first_computed_at":"2026-06-09T01:04:38.535308Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-09T01:04:38.535308Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"j7R8R0fqT6w1D8C0X6u+ZFDNfxjaNBffoe3mwac3JG4YXg+BPGnJIP00kW6NZ+2/1jRMCJzIeoAyG1EVFFjgBg==","signature_status":"signed_v1","signed_at":"2026-06-09T01:04:38.535845Z","signed_message":"canonical_sha256_bytes"},"source_id":"2505.04085","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ff3f1dc47e34dfb787a4d334188e9cc4f173bcf9c68e53a0f7700638c20ca5b7","sha256:307e8d10b14419e550518d2d4819223a81a06c831978a166077cce800093d19c"],"state_sha256":"1f0f9935c1b3b2b8471c2f48b001b6ab71fd5c1f56c0660a8697ee06ad02bb51"}