{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:RMEPHGKSMGLB7M6ZUZ4QAX3XD4","short_pith_number":"pith:RMEPHGKS","canonical_record":{"source":{"id":"2402.15423","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2024-02-23T16:33:49Z","cross_cats_sorted":["eess.SP","math.IT"],"title_canon_sha256":"0a1a8f525cbdf768c3c0e656001a924f18f590140a8ee66860ec543740d4cfc0","abstract_canon_sha256":"e4f410ee50cc68ceaa3d3000cae1d795274c0a81bdd0e3c6ee03bf85cc15c8d4"},"schema_version":"1.0"},"canonical_sha256":"8b08f3995261961fb3d9a679005f771f3d10a46e44a5c51b0c5915e4c736b8f5","source":{"kind":"arxiv","id":"2402.15423","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2402.15423","created_at":"2026-07-05T07:48:40Z"},{"alias_kind":"arxiv_version","alias_value":"2402.15423v1","created_at":"2026-07-05T07:48:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2402.15423","created_at":"2026-07-05T07:48:40Z"},{"alias_kind":"pith_short_12","alias_value":"RMEPHGKSMGLB","created_at":"2026-07-05T07:48:40Z"},{"alias_kind":"pith_short_16","alias_value":"RMEPHGKSMGLB7M6Z","created_at":"2026-07-05T07:48:40Z"},{"alias_kind":"pith_short_8","alias_value":"RMEPHGKS","created_at":"2026-07-05T07:48:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:RMEPHGKSMGLB7M6ZUZ4QAX3XD4","target":"record","payload":{"canonical_record":{"source":{"id":"2402.15423","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2024-02-23T16:33:49Z","cross_cats_sorted":["eess.SP","math.IT"],"title_canon_sha256":"0a1a8f525cbdf768c3c0e656001a924f18f590140a8ee66860ec543740d4cfc0","abstract_canon_sha256":"e4f410ee50cc68ceaa3d3000cae1d795274c0a81bdd0e3c6ee03bf85cc15c8d4"},"schema_version":"1.0"},"canonical_sha256":"8b08f3995261961fb3d9a679005f771f3d10a46e44a5c51b0c5915e4c736b8f5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T07:48:40.406436Z","signature_b64":"JIgsNd6InmBJP08+VeQ1sG0KG2w2kxnzLaPgIvcDxyNJy/4V5d2xOS8bDMvUntw9z9H4skxw7NdX8fXc+sG0CA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8b08f3995261961fb3d9a679005f771f3d10a46e44a5c51b0c5915e4c736b8f5","last_reissued_at":"2026-07-05T07:48:40.405999Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T07:48:40.405999Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2402.15423","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T07:48:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ciMVZF4xcEiNZ7CU80duvJKSIIlxLhvMWIlpAwt54YjD0wZlTmmtn3sF2F6hLPod5gMlMtUF5bI5rIaZ8BqRDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T14:06:08.992196Z"},"content_sha256":"05a392bdbeb6c541e95de3622f6a04d2e889078d7a3e0d199f1f9f695484cb1f","schema_version":"1.0","event_id":"sha256:05a392bdbeb6c541e95de3622f6a04d2e889078d7a3e0d199f1f9f695484cb1f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:RMEPHGKSMGLB7M6ZUZ4QAX3XD4","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Performance Analysis of Systems with Coupled and Decoupled RISs","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["eess.SP","math.IT"],"primary_cat":"cs.IT","authors_text":"Dominik Semmler, Josef A. Nossek, Michael Joham, Wolfgang Utschick","submitted_at":"2024-02-23T16:33:49Z","abstract_excerpt":"We analyze and compare different methods for handling the mutual coupling in RIS-aided communication systems. A new mutual coupling aware algorithm is derived where the reactance of each element is updated successively with a closed-form solution. In comparison to existing element-wise methods, this approach leads to a considerably reduced computational complexity. Furthermore, we introduce decoupling networks for the RIS array as a potential solution for handling mutual coupling. With these networks, the system model reduces to the same structure as when no mutual coupling were present. Inclu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2402.15423","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/2402.15423/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":"2026-07-05T07:48:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hRvzhn0Dw0kgc9yaUtPDBtVtpAyxCZvopluXBZh2PbRqHlrqu87SKnPIzpGZrwB5wLwM2zYMmVYwBxy1pBYUDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-05T14:06:08.992702Z"},"content_sha256":"9a388995a948ccdba566392921cdc38d215afaa6f0ac775501cc153feb8beca3","schema_version":"1.0","event_id":"sha256:9a388995a948ccdba566392921cdc38d215afaa6f0ac775501cc153feb8beca3"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RMEPHGKSMGLB7M6ZUZ4QAX3XD4/bundle.json","state_url":"https://pith.science/pith/RMEPHGKSMGLB7M6ZUZ4QAX3XD4/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RMEPHGKSMGLB7M6ZUZ4QAX3XD4/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":"2026-08-05T14:06:08Z","links":{"resolver":"https://pith.science/pith/RMEPHGKSMGLB7M6ZUZ4QAX3XD4","bundle":"https://pith.science/pith/RMEPHGKSMGLB7M6ZUZ4QAX3XD4/bundle.json","state":"https://pith.science/pith/RMEPHGKSMGLB7M6ZUZ4QAX3XD4/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RMEPHGKSMGLB7M6ZUZ4QAX3XD4/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:RMEPHGKSMGLB7M6ZUZ4QAX3XD4","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":"e4f410ee50cc68ceaa3d3000cae1d795274c0a81bdd0e3c6ee03bf85cc15c8d4","cross_cats_sorted":["eess.SP","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2024-02-23T16:33:49Z","title_canon_sha256":"0a1a8f525cbdf768c3c0e656001a924f18f590140a8ee66860ec543740d4cfc0"},"schema_version":"1.0","source":{"id":"2402.15423","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2402.15423","created_at":"2026-07-05T07:48:40Z"},{"alias_kind":"arxiv_version","alias_value":"2402.15423v1","created_at":"2026-07-05T07:48:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2402.15423","created_at":"2026-07-05T07:48:40Z"},{"alias_kind":"pith_short_12","alias_value":"RMEPHGKSMGLB","created_at":"2026-07-05T07:48:40Z"},{"alias_kind":"pith_short_16","alias_value":"RMEPHGKSMGLB7M6Z","created_at":"2026-07-05T07:48:40Z"},{"alias_kind":"pith_short_8","alias_value":"RMEPHGKS","created_at":"2026-07-05T07:48:40Z"}],"graph_snapshots":[{"event_id":"sha256:9a388995a948ccdba566392921cdc38d215afaa6f0ac775501cc153feb8beca3","target":"graph","created_at":"2026-07-05T07:48:40Z","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/2402.15423/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We analyze and compare different methods for handling the mutual coupling in RIS-aided communication systems. A new mutual coupling aware algorithm is derived where the reactance of each element is updated successively with a closed-form solution. In comparison to existing element-wise methods, this approach leads to a considerably reduced computational complexity. Furthermore, we introduce decoupling networks for the RIS array as a potential solution for handling mutual coupling. With these networks, the system model reduces to the same structure as when no mutual coupling were present. Inclu","authors_text":"Dominik Semmler, Josef A. Nossek, Michael Joham, Wolfgang Utschick","cross_cats":["eess.SP","math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2024-02-23T16:33:49Z","title":"Performance Analysis of Systems with Coupled and Decoupled RISs"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2402.15423","kind":"arxiv","version":1},"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":"sha256:05a392bdbeb6c541e95de3622f6a04d2e889078d7a3e0d199f1f9f695484cb1f","target":"record","created_at":"2026-07-05T07:48:40Z","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":"e4f410ee50cc68ceaa3d3000cae1d795274c0a81bdd0e3c6ee03bf85cc15c8d4","cross_cats_sorted":["eess.SP","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2024-02-23T16:33:49Z","title_canon_sha256":"0a1a8f525cbdf768c3c0e656001a924f18f590140a8ee66860ec543740d4cfc0"},"schema_version":"1.0","source":{"id":"2402.15423","kind":"arxiv","version":1}},"canonical_sha256":"8b08f3995261961fb3d9a679005f771f3d10a46e44a5c51b0c5915e4c736b8f5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8b08f3995261961fb3d9a679005f771f3d10a46e44a5c51b0c5915e4c736b8f5","first_computed_at":"2026-07-05T07:48:40.405999Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:48:40.405999Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"JIgsNd6InmBJP08+VeQ1sG0KG2w2kxnzLaPgIvcDxyNJy/4V5d2xOS8bDMvUntw9z9H4skxw7NdX8fXc+sG0CA==","signature_status":"signed_v1","signed_at":"2026-07-05T07:48:40.406436Z","signed_message":"canonical_sha256_bytes"},"source_id":"2402.15423","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:05a392bdbeb6c541e95de3622f6a04d2e889078d7a3e0d199f1f9f695484cb1f","sha256:9a388995a948ccdba566392921cdc38d215afaa6f0ac775501cc153feb8beca3"],"state_sha256":"e1351af063ed803f73da4cf8ec9f83a96ba637d183d5232fe4730bbc06552a38"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"SEl2veKIDEt/K5Xlil/kZl2nq+k2jeGu+78IGzrRwErZ/aPt0sFBgBqyvLwa4Bgv/Sov+4+q3nRQQJTo/xcTAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-05T14:06:08.996669Z","bundle_sha256":"1f591a5c1559cc29fcb7471c5ad31505448a1071f434229c3429d116773a30dd"}}