{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:OEAMHOKPN5TU62IHQ4HYWXZGGP","short_pith_number":"pith:OEAMHOKP","canonical_record":{"source":{"id":"2301.05469","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IT","submitted_at":"2023-01-13T10:44:51Z","cross_cats_sorted":["eess.SP","math.IT"],"title_canon_sha256":"1a5e3c2d0701874644b0616d3453eb0ea1c35969b111b2615e49241c0f4dd4da","abstract_canon_sha256":"eb785c17caa91fc2291e28d13744246d4ef2429581239eededd1eeaa7c622ddc"},"schema_version":"1.0"},"canonical_sha256":"7100c3b94f6f674f6907870f8b5f2633d5dc47ba10eef58f6518c9dd9c504210","source":{"kind":"arxiv","id":"2301.05469","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2301.05469","created_at":"2026-07-05T06:27:44Z"},{"alias_kind":"arxiv_version","alias_value":"2301.05469v2","created_at":"2026-07-05T06:27:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2301.05469","created_at":"2026-07-05T06:27:44Z"},{"alias_kind":"pith_short_12","alias_value":"OEAMHOKPN5TU","created_at":"2026-07-05T06:27:44Z"},{"alias_kind":"pith_short_16","alias_value":"OEAMHOKPN5TU62IH","created_at":"2026-07-05T06:27:44Z"},{"alias_kind":"pith_short_8","alias_value":"OEAMHOKP","created_at":"2026-07-05T06:27:44Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:OEAMHOKPN5TU62IHQ4HYWXZGGP","target":"record","payload":{"canonical_record":{"source":{"id":"2301.05469","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IT","submitted_at":"2023-01-13T10:44:51Z","cross_cats_sorted":["eess.SP","math.IT"],"title_canon_sha256":"1a5e3c2d0701874644b0616d3453eb0ea1c35969b111b2615e49241c0f4dd4da","abstract_canon_sha256":"eb785c17caa91fc2291e28d13744246d4ef2429581239eededd1eeaa7c622ddc"},"schema_version":"1.0"},"canonical_sha256":"7100c3b94f6f674f6907870f8b5f2633d5dc47ba10eef58f6518c9dd9c504210","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:27:44.883368Z","signature_b64":"4nidkbl7xwVAvBbMHTdxGRektu6qE/0rOLbcunp6t+VrldB64xHibDAuQXsZITjYJTfuZeQ1Xej0/scBKsqMCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7100c3b94f6f674f6907870f8b5f2633d5dc47ba10eef58f6518c9dd9c504210","last_reissued_at":"2026-07-05T06:27:44.882904Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:27:44.882904Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2301.05469","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":"2026-07-05T06:27:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZGepl+mo6zsvAawgT5XjT/ZiF/J/1UqcYCzzQILXjJJhL/4s/m9UJeIZMB1xn+bMAPHLQdCJrXaKvJzsn6gJDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T19:00:38.102986Z"},"content_sha256":"c591517a98131bd340542ef7b3c2f32b38517eacc0769838e7e5699b2133e7d6","schema_version":"1.0","event_id":"sha256:c591517a98131bd340542ef7b3c2f32b38517eacc0769838e7e5699b2133e7d6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:OEAMHOKPN5TU62IHQ4HYWXZGGP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Multi-Active/Passive-IRS Enabled Wireless Information and Power Transfer: Active IRS Deployment and Performance Analysis","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["eess.SP","math.IT"],"primary_cat":"cs.IT","authors_text":"Min Fu, Rui Zhang, Weidong Mei","submitted_at":"2023-01-13T10:44:51Z","abstract_excerpt":"Intelligent reflecting surfaces (IRSs), active and/or passive, can be densely deployed in complex environments to significantly enhance wireless network coverage for both wireless information transfer (WIT) and wireless power transfer (WPT). In this letter, we study the downlink WIT/WPT from a multi-antenna base station to a single-antenna user over a multi-active/passive IRS (AIRS/PIRS)-enabled wireless link. In particular, we aim to optimize the location of the AIRS with those of the other PIRSs being fixed to maximize the received signal-to-noise ratio (SNR) and signal power at the user in "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2301.05469","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/2301.05469/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":"2026-07-05T06:27:44Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"w6+dO38n6CtkhvemziofInWfi/cLHDLVZISjsURlYLgYOguDuIu7nlLCUzqBAwvpsuVeV3JxcD0c0g3qw8MgCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-21T19:00:38.104016Z"},"content_sha256":"7e73108bca2c4883c09d0d7542dc0c68ec33dfc308163c12d222b5e3670ec040","schema_version":"1.0","event_id":"sha256:7e73108bca2c4883c09d0d7542dc0c68ec33dfc308163c12d222b5e3670ec040"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OEAMHOKPN5TU62IHQ4HYWXZGGP/bundle.json","state_url":"https://pith.science/pith/OEAMHOKPN5TU62IHQ4HYWXZGGP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OEAMHOKPN5TU62IHQ4HYWXZGGP/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":"2026-08-21T19:00:38Z","links":{"resolver":"https://pith.science/pith/OEAMHOKPN5TU62IHQ4HYWXZGGP","bundle":"https://pith.science/pith/OEAMHOKPN5TU62IHQ4HYWXZGGP/bundle.json","state":"https://pith.science/pith/OEAMHOKPN5TU62IHQ4HYWXZGGP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OEAMHOKPN5TU62IHQ4HYWXZGGP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:OEAMHOKPN5TU62IHQ4HYWXZGGP","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":"eb785c17caa91fc2291e28d13744246d4ef2429581239eededd1eeaa7c622ddc","cross_cats_sorted":["eess.SP","math.IT"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IT","submitted_at":"2023-01-13T10:44:51Z","title_canon_sha256":"1a5e3c2d0701874644b0616d3453eb0ea1c35969b111b2615e49241c0f4dd4da"},"schema_version":"1.0","source":{"id":"2301.05469","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2301.05469","created_at":"2026-07-05T06:27:44Z"},{"alias_kind":"arxiv_version","alias_value":"2301.05469v2","created_at":"2026-07-05T06:27:44Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2301.05469","created_at":"2026-07-05T06:27:44Z"},{"alias_kind":"pith_short_12","alias_value":"OEAMHOKPN5TU","created_at":"2026-07-05T06:27:44Z"},{"alias_kind":"pith_short_16","alias_value":"OEAMHOKPN5TU62IH","created_at":"2026-07-05T06:27:44Z"},{"alias_kind":"pith_short_8","alias_value":"OEAMHOKP","created_at":"2026-07-05T06:27:44Z"}],"graph_snapshots":[{"event_id":"sha256:7e73108bca2c4883c09d0d7542dc0c68ec33dfc308163c12d222b5e3670ec040","target":"graph","created_at":"2026-07-05T06:27:44Z","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/2301.05469/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Intelligent reflecting surfaces (IRSs), active and/or passive, can be densely deployed in complex environments to significantly enhance wireless network coverage for both wireless information transfer (WIT) and wireless power transfer (WPT). In this letter, we study the downlink WIT/WPT from a multi-antenna base station to a single-antenna user over a multi-active/passive IRS (AIRS/PIRS)-enabled wireless link. In particular, we aim to optimize the location of the AIRS with those of the other PIRSs being fixed to maximize the received signal-to-noise ratio (SNR) and signal power at the user in ","authors_text":"Min Fu, Rui Zhang, Weidong Mei","cross_cats":["eess.SP","math.IT"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IT","submitted_at":"2023-01-13T10:44:51Z","title":"Multi-Active/Passive-IRS Enabled Wireless Information and Power Transfer: Active IRS Deployment and Performance Analysis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2301.05469","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:c591517a98131bd340542ef7b3c2f32b38517eacc0769838e7e5699b2133e7d6","target":"record","created_at":"2026-07-05T06:27:44Z","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":"eb785c17caa91fc2291e28d13744246d4ef2429581239eededd1eeaa7c622ddc","cross_cats_sorted":["eess.SP","math.IT"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.IT","submitted_at":"2023-01-13T10:44:51Z","title_canon_sha256":"1a5e3c2d0701874644b0616d3453eb0ea1c35969b111b2615e49241c0f4dd4da"},"schema_version":"1.0","source":{"id":"2301.05469","kind":"arxiv","version":2}},"canonical_sha256":"7100c3b94f6f674f6907870f8b5f2633d5dc47ba10eef58f6518c9dd9c504210","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7100c3b94f6f674f6907870f8b5f2633d5dc47ba10eef58f6518c9dd9c504210","first_computed_at":"2026-07-05T06:27:44.882904Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:27:44.882904Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4nidkbl7xwVAvBbMHTdxGRektu6qE/0rOLbcunp6t+VrldB64xHibDAuQXsZITjYJTfuZeQ1Xej0/scBKsqMCw==","signature_status":"signed_v1","signed_at":"2026-07-05T06:27:44.883368Z","signed_message":"canonical_sha256_bytes"},"source_id":"2301.05469","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c591517a98131bd340542ef7b3c2f32b38517eacc0769838e7e5699b2133e7d6","sha256:7e73108bca2c4883c09d0d7542dc0c68ec33dfc308163c12d222b5e3670ec040"],"state_sha256":"2ce8b38d5a3f778231106339f09388639e38e38f532f66341c798b713857b250"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eqtjfCZw+AnfodURhb8z0LJXybYWfkIa1K8mD/60dluzanyhh/5LGrQhRPnDLFCAI/gooTjM4al1RYBaQ06nBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-21T19:00:38.109862Z","bundle_sha256":"e0542fb94294e56e2cdc8f6d4420edac4340f15f13c1185c2b91efbcaf503f9d"}}