{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:JVUP5OWW5GCFH5QPEU5PPPUSAK","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":"20c12b344024e2550ec91c485ddaa44301ac019f4ed4e249db32970a991d3f4b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2020-07-29T10:57:45Z","title_canon_sha256":"477aec426456b24696d4aa617079ecebb170953c28f72f4c26955d6d848a24d8"},"schema_version":"1.0","source":{"id":"2007.14738","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2007.14738","created_at":"2026-07-05T03:50:46Z"},{"alias_kind":"arxiv_version","alias_value":"2007.14738v2","created_at":"2026-07-05T03:50:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2007.14738","created_at":"2026-07-05T03:50:46Z"},{"alias_kind":"pith_short_12","alias_value":"JVUP5OWW5GCF","created_at":"2026-07-05T03:50:46Z"},{"alias_kind":"pith_short_16","alias_value":"JVUP5OWW5GCFH5QP","created_at":"2026-07-05T03:50:46Z"},{"alias_kind":"pith_short_8","alias_value":"JVUP5OWW","created_at":"2026-07-05T03:50:46Z"}],"graph_snapshots":[{"event_id":"sha256:0629648df4c34dc380da2ce7d4561bd523b7701bf86431c02415aa3239f6f165","target":"graph","created_at":"2026-07-05T03:50:46Z","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/2007.14738/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Intelligent reflecting surfaces (IRS) have been proposed as a revolutionary technology owing to its capability of adaptively reconfiguring the propagation environment in a cost-effective and hardware-efficient fashion. While the application of IRS as a passive reflector to enhance the performance of wireless communications has been widely investigated in the literature, using IRS as a passive transmitter recently is emerging as a new concept and attracting steadily growing interest. In this paper, we propose two novel IRS-based passive information transmission systems using advanced symbol-lev","authors_text":"A. Lee Swindlehurst, Ming Li, Qian Liu, Qingqing Wu, Rang Liu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2020-07-29T10:57:45Z","title":"Intelligent Reflecting Surface based Passive Information Transmission: A Symbol-Level Precoding Approach"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2007.14738","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:d14b3281b2b5b087c78a8dc5b10305c09ff0cd71596a0e07cd89209e740e2d59","target":"record","created_at":"2026-07-05T03:50:46Z","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":"20c12b344024e2550ec91c485ddaa44301ac019f4ed4e249db32970a991d3f4b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2020-07-29T10:57:45Z","title_canon_sha256":"477aec426456b24696d4aa617079ecebb170953c28f72f4c26955d6d848a24d8"},"schema_version":"1.0","source":{"id":"2007.14738","kind":"arxiv","version":2}},"canonical_sha256":"4d68febad6e98453f60f253af7be9202920760ae7e33e39d70200c089fb535f0","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4d68febad6e98453f60f253af7be9202920760ae7e33e39d70200c089fb535f0","first_computed_at":"2026-07-05T03:50:46.469659Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:50:46.469659Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1AvRFM8WH/6GSyEhfakkiuUcbuoqYnxw1lIYMcc38jpC7GDCZH43i/MKQMqt1YePaHmJCS7Ik/xyRpaESmjaAw==","signature_status":"signed_v1","signed_at":"2026-07-05T03:50:46.470045Z","signed_message":"canonical_sha256_bytes"},"source_id":"2007.14738","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d14b3281b2b5b087c78a8dc5b10305c09ff0cd71596a0e07cd89209e740e2d59","sha256:0629648df4c34dc380da2ce7d4561bd523b7701bf86431c02415aa3239f6f165"],"state_sha256":"1cdc7ba32dfa5bef9ee22a7fb5698d28aa5aed32b2f8902662643f635bacfb1e"}