{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:A2KJTO5LB7MA75X5QN6J2OMH47","short_pith_number":"pith:A2KJTO5L","schema_version":"1.0","canonical_sha256":"069499bbab0fd80ff6fd837c9d3987e7d499098ff9f3c6c5806774ff2b6c4c8c","source":{"kind":"arxiv","id":"2606.27157","version":1},"attestation_state":"computed","paper":{"title":"Single-Base-Station Indoor Localization via Super-Resolved Relative Power Delay Profiles","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"Dirk T. M. Slock, Fangqing Xiao","submitted_at":"2026-06-25T15:26:50Z","abstract_excerpt":"Indoor multipath is shaped by surrounding reflectors, scatterers, and blockages, so a relative power-delay profile (PDP) can serve as a location fingerprint without an identifiable LoS path, angle information, or absolute time-of-arrival ranging. However, a communication receiver observes finitely many noisy pilot-frequency samples rather than an ideal PDP. This paper models the resulting Dirichlet blur, delay folding, and off-grid mismatch, and reconstructs a posterior-power profile using expectation-maximization sparse Bayesian learning. In spatially consistent QuaDRiGa simulations, twofold "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2606.27157","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SP","submitted_at":"2026-06-25T15:26:50Z","cross_cats_sorted":[],"title_canon_sha256":"410d60615904b4eb00bdc5f475e902330ab0463d6d90846fbcb5355e6bbfd78b","abstract_canon_sha256":"3a44bba24a710ba82d228ffe3b4a17bee8337124c07b15dc5e8012506dc6fd54"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-26T01:16:11.784221Z","signature_b64":"p8xDpFql9Fzrl6tQZcVox+s4R1Z8qwFSceADMyljt9pR3oFnGIaUMkrpvwPWhxOXySz0W12ADNQTNa9OOEt/CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"069499bbab0fd80ff6fd837c9d3987e7d499098ff9f3c6c5806774ff2b6c4c8c","last_reissued_at":"2026-06-26T01:16:11.783878Z","signature_status":"signed_v1","first_computed_at":"2026-06-26T01:16:11.783878Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Single-Base-Station Indoor Localization via Super-Resolved Relative Power Delay Profiles","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"Dirk T. M. Slock, Fangqing Xiao","submitted_at":"2026-06-25T15:26:50Z","abstract_excerpt":"Indoor multipath is shaped by surrounding reflectors, scatterers, and blockages, so a relative power-delay profile (PDP) can serve as a location fingerprint without an identifiable LoS path, angle information, or absolute time-of-arrival ranging. However, a communication receiver observes finitely many noisy pilot-frequency samples rather than an ideal PDP. This paper models the resulting Dirichlet blur, delay folding, and off-grid mismatch, and reconstructs a posterior-power profile using expectation-maximization sparse Bayesian learning. In spatially consistent QuaDRiGa simulations, twofold "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.27157","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/2606.27157/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2606.27157","created_at":"2026-06-26T01:16:11.783934+00:00"},{"alias_kind":"arxiv_version","alias_value":"2606.27157v1","created_at":"2026-06-26T01:16:11.783934+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.27157","created_at":"2026-06-26T01:16:11.783934+00:00"},{"alias_kind":"pith_short_12","alias_value":"A2KJTO5LB7MA","created_at":"2026-06-26T01:16:11.783934+00:00"},{"alias_kind":"pith_short_16","alias_value":"A2KJTO5LB7MA75X5","created_at":"2026-06-26T01:16:11.783934+00:00"},{"alias_kind":"pith_short_8","alias_value":"A2KJTO5L","created_at":"2026-06-26T01:16:11.783934+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/A2KJTO5LB7MA75X5QN6J2OMH47","json":"https://pith.science/pith/A2KJTO5LB7MA75X5QN6J2OMH47.json","graph_json":"https://pith.science/api/pith-number/A2KJTO5LB7MA75X5QN6J2OMH47/graph.json","events_json":"https://pith.science/api/pith-number/A2KJTO5LB7MA75X5QN6J2OMH47/events.json","paper":"https://pith.science/paper/A2KJTO5L"},"agent_actions":{"view_html":"https://pith.science/pith/A2KJTO5LB7MA75X5QN6J2OMH47","download_json":"https://pith.science/pith/A2KJTO5LB7MA75X5QN6J2OMH47.json","view_paper":"https://pith.science/paper/A2KJTO5L","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2606.27157&json=true","fetch_graph":"https://pith.science/api/pith-number/A2KJTO5LB7MA75X5QN6J2OMH47/graph.json","fetch_events":"https://pith.science/api/pith-number/A2KJTO5LB7MA75X5QN6J2OMH47/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/A2KJTO5LB7MA75X5QN6J2OMH47/action/timestamp_anchor","attest_storage":"https://pith.science/pith/A2KJTO5LB7MA75X5QN6J2OMH47/action/storage_attestation","attest_author":"https://pith.science/pith/A2KJTO5LB7MA75X5QN6J2OMH47/action/author_attestation","sign_citation":"https://pith.science/pith/A2KJTO5LB7MA75X5QN6J2OMH47/action/citation_signature","submit_replication":"https://pith.science/pith/A2KJTO5LB7MA75X5QN6J2OMH47/action/replication_record"}},"created_at":"2026-06-26T01:16:11.783934+00:00","updated_at":"2026-06-26T01:16:11.783934+00:00"}