{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:52WLYLLFRQEV6P5TDDFJADS6QW","short_pith_number":"pith:52WLYLLF","canonical_record":{"source":{"id":"2406.00556","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2024-06-01T21:34:28Z","cross_cats_sorted":["eess.SP","math.IT"],"title_canon_sha256":"34b45388d46d60ef875ecdd0b461ce74ece5ead47067b56f34289fb57acd47ba","abstract_canon_sha256":"429dbfea1f0fd336e3defe0d372736177f40ccb9d36d3372c65c6e3237335a4a"},"schema_version":"1.0"},"canonical_sha256":"eeacbc2d658c095f3fb318ca900e5e85a70f30548c1c1031544f2228b21861eb","source":{"kind":"arxiv","id":"2406.00556","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2406.00556","created_at":"2026-07-05T08:26:03Z"},{"alias_kind":"arxiv_version","alias_value":"2406.00556v1","created_at":"2026-07-05T08:26:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2406.00556","created_at":"2026-07-05T08:26:03Z"},{"alias_kind":"pith_short_12","alias_value":"52WLYLLFRQEV","created_at":"2026-07-05T08:26:03Z"},{"alias_kind":"pith_short_16","alias_value":"52WLYLLFRQEV6P5T","created_at":"2026-07-05T08:26:03Z"},{"alias_kind":"pith_short_8","alias_value":"52WLYLLF","created_at":"2026-07-05T08:26:03Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:52WLYLLFRQEV6P5TDDFJADS6QW","target":"record","payload":{"canonical_record":{"source":{"id":"2406.00556","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2024-06-01T21:34:28Z","cross_cats_sorted":["eess.SP","math.IT"],"title_canon_sha256":"34b45388d46d60ef875ecdd0b461ce74ece5ead47067b56f34289fb57acd47ba","abstract_canon_sha256":"429dbfea1f0fd336e3defe0d372736177f40ccb9d36d3372c65c6e3237335a4a"},"schema_version":"1.0"},"canonical_sha256":"eeacbc2d658c095f3fb318ca900e5e85a70f30548c1c1031544f2228b21861eb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:26:03.610692Z","signature_b64":"FTfLvCn4Ef/FQLTokmtMovVVS78/knaxSqAQwm5UlBXm3GPNCj1wNSpQnuAFPzqZ0Jz/eRWu3EsoSes+2soaAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"eeacbc2d658c095f3fb318ca900e5e85a70f30548c1c1031544f2228b21861eb","last_reissued_at":"2026-07-05T08:26:03.610192Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:26:03.610192Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2406.00556","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":"2026-07-05T08:26:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Y8838liAgY9ShL/Ptx9Yjs4QGU913NAk8x8cHdlHZMSPkkHHQtNZuvo53vX8pWkrVd5Uriucio0bn7oFULmRDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T22:14:18.580390Z"},"content_sha256":"52353acee27ff43fcf24ea10ed2b7e138ccab614b46d4d4acf18513073e0ea4c","schema_version":"1.0","event_id":"sha256:52353acee27ff43fcf24ea10ed2b7e138ccab614b46d4d4acf18513073e0ea4c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:52WLYLLFRQEV6P5TDDFJADS6QW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Lens-Type Redirective Intelligent Surfaces for Multi-User MIMO Communication","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["eess.SP","math.IT"],"primary_cat":"cs.IT","authors_text":"Amine Mezghani, Bamelak Tadele, Faouzi Bellili, Haseeb ur Rehman, Md Jawwad Chowdhury","submitted_at":"2024-06-01T21:34:28Z","abstract_excerpt":"This paper explores the idea of using redirective reconfigurable intelligent surfaces (RedRIS) to overcome many of the challenges associated with the conventional reflective RIS. We develop a framework for jointly optimizing the switching matrix of the lens-type RedRIS ports along with the active precoding matrix at the base station (BS) and the receive scaling factor. A joint non-convex optimization problem is formulated under the minimum mean-square error (MMSE) criterion with the aim to maximize the spectral efficiency of each user. In the single-cell scenario, the optimum active precoding "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2406.00556","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/2406.00556/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":"2026-07-05T08:26:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"WMQ6pN29yrE3WpdYOpEs0W8xN3R4RPXPmm4adIwsUEnZjPadcY3ym7feLYr4TGrSgp9mxL500pS0JzT1jA0MCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T22:14:18.580877Z"},"content_sha256":"990ca45219e0fc8173cbfa04dd518d4f66683410abba2d2f1c5d8df777503f1e","schema_version":"1.0","event_id":"sha256:990ca45219e0fc8173cbfa04dd518d4f66683410abba2d2f1c5d8df777503f1e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/52WLYLLFRQEV6P5TDDFJADS6QW/bundle.json","state_url":"https://pith.science/pith/52WLYLLFRQEV6P5TDDFJADS6QW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/52WLYLLFRQEV6P5TDDFJADS6QW/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":"2026-08-03T22:14:18Z","links":{"resolver":"https://pith.science/pith/52WLYLLFRQEV6P5TDDFJADS6QW","bundle":"https://pith.science/pith/52WLYLLFRQEV6P5TDDFJADS6QW/bundle.json","state":"https://pith.science/pith/52WLYLLFRQEV6P5TDDFJADS6QW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/52WLYLLFRQEV6P5TDDFJADS6QW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:52WLYLLFRQEV6P5TDDFJADS6QW","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":"429dbfea1f0fd336e3defe0d372736177f40ccb9d36d3372c65c6e3237335a4a","cross_cats_sorted":["eess.SP","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2024-06-01T21:34:28Z","title_canon_sha256":"34b45388d46d60ef875ecdd0b461ce74ece5ead47067b56f34289fb57acd47ba"},"schema_version":"1.0","source":{"id":"2406.00556","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2406.00556","created_at":"2026-07-05T08:26:03Z"},{"alias_kind":"arxiv_version","alias_value":"2406.00556v1","created_at":"2026-07-05T08:26:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2406.00556","created_at":"2026-07-05T08:26:03Z"},{"alias_kind":"pith_short_12","alias_value":"52WLYLLFRQEV","created_at":"2026-07-05T08:26:03Z"},{"alias_kind":"pith_short_16","alias_value":"52WLYLLFRQEV6P5T","created_at":"2026-07-05T08:26:03Z"},{"alias_kind":"pith_short_8","alias_value":"52WLYLLF","created_at":"2026-07-05T08:26:03Z"}],"graph_snapshots":[{"event_id":"sha256:990ca45219e0fc8173cbfa04dd518d4f66683410abba2d2f1c5d8df777503f1e","target":"graph","created_at":"2026-07-05T08:26:03Z","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/2406.00556/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This paper explores the idea of using redirective reconfigurable intelligent surfaces (RedRIS) to overcome many of the challenges associated with the conventional reflective RIS. We develop a framework for jointly optimizing the switching matrix of the lens-type RedRIS ports along with the active precoding matrix at the base station (BS) and the receive scaling factor. A joint non-convex optimization problem is formulated under the minimum mean-square error (MMSE) criterion with the aim to maximize the spectral efficiency of each user. In the single-cell scenario, the optimum active precoding ","authors_text":"Amine Mezghani, Bamelak Tadele, Faouzi Bellili, Haseeb ur Rehman, Md Jawwad Chowdhury","cross_cats":["eess.SP","math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2024-06-01T21:34:28Z","title":"Lens-Type Redirective Intelligent Surfaces for Multi-User MIMO Communication"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2406.00556","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":"sha256:52353acee27ff43fcf24ea10ed2b7e138ccab614b46d4d4acf18513073e0ea4c","target":"record","created_at":"2026-07-05T08:26:03Z","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":"429dbfea1f0fd336e3defe0d372736177f40ccb9d36d3372c65c6e3237335a4a","cross_cats_sorted":["eess.SP","math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2024-06-01T21:34:28Z","title_canon_sha256":"34b45388d46d60ef875ecdd0b461ce74ece5ead47067b56f34289fb57acd47ba"},"schema_version":"1.0","source":{"id":"2406.00556","kind":"arxiv","version":1}},"canonical_sha256":"eeacbc2d658c095f3fb318ca900e5e85a70f30548c1c1031544f2228b21861eb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"eeacbc2d658c095f3fb318ca900e5e85a70f30548c1c1031544f2228b21861eb","first_computed_at":"2026-07-05T08:26:03.610192Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T08:26:03.610192Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FTfLvCn4Ef/FQLTokmtMovVVS78/knaxSqAQwm5UlBXm3GPNCj1wNSpQnuAFPzqZ0Jz/eRWu3EsoSes+2soaAw==","signature_status":"signed_v1","signed_at":"2026-07-05T08:26:03.610692Z","signed_message":"canonical_sha256_bytes"},"source_id":"2406.00556","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:52353acee27ff43fcf24ea10ed2b7e138ccab614b46d4d4acf18513073e0ea4c","sha256:990ca45219e0fc8173cbfa04dd518d4f66683410abba2d2f1c5d8df777503f1e"],"state_sha256":"25b5b20bfcd2b32902727d19b3fb5164007e7388a76da7a6ad618da45f8d27c3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gtvbYS9SHViK52QK+W2PBz8g237ykcs5+y71/qqnJXI/7oAWwEh7OSsqCa+NwrgEpzD5Nq1c/poKM+SYSiByBQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T22:14:18.584639Z","bundle_sha256":"55a35780b555af17313f5cf2dc67c840ae7aa36337aa321298ac4441daba9e25"}}