{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:MMYJG6CJ3POYOLPPHBDIJKAL6S","short_pith_number":"pith:MMYJG6CJ","canonical_record":{"source":{"id":"2203.15399","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.IT","submitted_at":"2022-03-29T09:44:23Z","cross_cats_sorted":["eess.SP","math.IT"],"title_canon_sha256":"fa9fdbd8dd27fe6c7214f3aac896a576dfde48b38777c579b5db9d85b92b92ea","abstract_canon_sha256":"bac28364876e174171ebc6b70c5f27931852626690286fda9c8c4de0d9260285"},"schema_version":"1.0"},"canonical_sha256":"6330937849dbdd872def384684a80bf49ddb52df8fa33ebef1e92d1844b6c8b7","source":{"kind":"arxiv","id":"2203.15399","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2203.15399","created_at":"2026-07-05T04:09:24Z"},{"alias_kind":"arxiv_version","alias_value":"2203.15399v1","created_at":"2026-07-05T04:09:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2203.15399","created_at":"2026-07-05T04:09:24Z"},{"alias_kind":"pith_short_12","alias_value":"MMYJG6CJ3POY","created_at":"2026-07-05T04:09:24Z"},{"alias_kind":"pith_short_16","alias_value":"MMYJG6CJ3POYOLPP","created_at":"2026-07-05T04:09:24Z"},{"alias_kind":"pith_short_8","alias_value":"MMYJG6CJ","created_at":"2026-07-05T04:09:24Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:MMYJG6CJ3POYOLPPHBDIJKAL6S","target":"record","payload":{"canonical_record":{"source":{"id":"2203.15399","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.IT","submitted_at":"2022-03-29T09:44:23Z","cross_cats_sorted":["eess.SP","math.IT"],"title_canon_sha256":"fa9fdbd8dd27fe6c7214f3aac896a576dfde48b38777c579b5db9d85b92b92ea","abstract_canon_sha256":"bac28364876e174171ebc6b70c5f27931852626690286fda9c8c4de0d9260285"},"schema_version":"1.0"},"canonical_sha256":"6330937849dbdd872def384684a80bf49ddb52df8fa33ebef1e92d1844b6c8b7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:09:24.969446Z","signature_b64":"CGju3bERo9GFaU3hxcMBfqpgAYekANurphjFsRF0cV9pcFwaPy6PRY2mMIN1SoIGt9SuNuxVwqqQIGkCJxyzBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"6330937849dbdd872def384684a80bf49ddb52df8fa33ebef1e92d1844b6c8b7","last_reissued_at":"2026-07-05T04:09:24.969032Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:09:24.969032Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2203.15399","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":"2026-07-05T04:09:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tqo3ZCgHNtWRl0fExTZavesZFiT8Zk3vcDvq8nKGpUqPQhts1a+IDHbFstEQ7agxa+sVw7e8OingqvtsEP9+Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T20:36:51.466162Z"},"content_sha256":"11591e14896716dfbe09d2419beafdb493f98184a9bfaf135011a1ceb753d5de","schema_version":"1.0","event_id":"sha256:11591e14896716dfbe09d2419beafdb493f98184a9bfaf135011a1ceb753d5de"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:MMYJG6CJ3POYOLPPHBDIJKAL6S","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Time Reversal for Multiple Access and Mobility: Algorithmic Design and Experimental Results","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["eess.SP","math.IT"],"primary_cat":"cs.IT","authors_text":"A. Mokh, A. Ourir, A. Tourin, G. C. Alexandropoulos, J. de Rosny, M. Fink, M. Kamoun, R. Khayatzadeh","submitted_at":"2022-03-29T09:44:23Z","abstract_excerpt":"Time Reversal (TR) has been proposed as a competitive precoding strategy for low-complexity wireless devices relying on Ultra-WideBand (UWB) signal waveforms. However, when TR is applied for multiple access, the signals received by the multiple users suffer from significant levels of inter-symbol and inter-user interference, which requires additional processing for mitigation by each receiving user. In this paper, we present an iterative Time-Reversal Division Multiple Access (TRDMA) approach that aims to dim the latter interference levels. The performance of iterative TRDMA is evaluated exper"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2203.15399","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/2203.15399/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":"2026-07-05T04:09:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"L4VMwXWhe1Mj4NcinC6N/Wyrv0UGC9EoDq8RSDXHDp7Rw+anu61VM6fAxpZgvRXZiSMmwV5jY4vHH6Z4ajakCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T20:36:51.466711Z"},"content_sha256":"53003774cbaebd02cb9c5585516d69808018f3464f55d476188ff19aebabb210","schema_version":"1.0","event_id":"sha256:53003774cbaebd02cb9c5585516d69808018f3464f55d476188ff19aebabb210"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MMYJG6CJ3POYOLPPHBDIJKAL6S/bundle.json","state_url":"https://pith.science/pith/MMYJG6CJ3POYOLPPHBDIJKAL6S/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MMYJG6CJ3POYOLPPHBDIJKAL6S/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":"2026-08-03T20:36:51Z","links":{"resolver":"https://pith.science/pith/MMYJG6CJ3POYOLPPHBDIJKAL6S","bundle":"https://pith.science/pith/MMYJG6CJ3POYOLPPHBDIJKAL6S/bundle.json","state":"https://pith.science/pith/MMYJG6CJ3POYOLPPHBDIJKAL6S/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MMYJG6CJ3POYOLPPHBDIJKAL6S/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:MMYJG6CJ3POYOLPPHBDIJKAL6S","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":"bac28364876e174171ebc6b70c5f27931852626690286fda9c8c4de0d9260285","cross_cats_sorted":["eess.SP","math.IT"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.IT","submitted_at":"2022-03-29T09:44:23Z","title_canon_sha256":"fa9fdbd8dd27fe6c7214f3aac896a576dfde48b38777c579b5db9d85b92b92ea"},"schema_version":"1.0","source":{"id":"2203.15399","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2203.15399","created_at":"2026-07-05T04:09:24Z"},{"alias_kind":"arxiv_version","alias_value":"2203.15399v1","created_at":"2026-07-05T04:09:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2203.15399","created_at":"2026-07-05T04:09:24Z"},{"alias_kind":"pith_short_12","alias_value":"MMYJG6CJ3POY","created_at":"2026-07-05T04:09:24Z"},{"alias_kind":"pith_short_16","alias_value":"MMYJG6CJ3POYOLPP","created_at":"2026-07-05T04:09:24Z"},{"alias_kind":"pith_short_8","alias_value":"MMYJG6CJ","created_at":"2026-07-05T04:09:24Z"}],"graph_snapshots":[{"event_id":"sha256:53003774cbaebd02cb9c5585516d69808018f3464f55d476188ff19aebabb210","target":"graph","created_at":"2026-07-05T04:09:24Z","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/2203.15399/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Time Reversal (TR) has been proposed as a competitive precoding strategy for low-complexity wireless devices relying on Ultra-WideBand (UWB) signal waveforms. However, when TR is applied for multiple access, the signals received by the multiple users suffer from significant levels of inter-symbol and inter-user interference, which requires additional processing for mitigation by each receiving user. In this paper, we present an iterative Time-Reversal Division Multiple Access (TRDMA) approach that aims to dim the latter interference levels. The performance of iterative TRDMA is evaluated exper","authors_text":"A. Mokh, A. Ourir, A. Tourin, G. C. Alexandropoulos, J. de Rosny, M. Fink, M. Kamoun, R. Khayatzadeh","cross_cats":["eess.SP","math.IT"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.IT","submitted_at":"2022-03-29T09:44:23Z","title":"Time Reversal for Multiple Access and Mobility: Algorithmic Design and Experimental Results"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2203.15399","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":"sha256:11591e14896716dfbe09d2419beafdb493f98184a9bfaf135011a1ceb753d5de","target":"record","created_at":"2026-07-05T04:09:24Z","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":"bac28364876e174171ebc6b70c5f27931852626690286fda9c8c4de0d9260285","cross_cats_sorted":["eess.SP","math.IT"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"cs.IT","submitted_at":"2022-03-29T09:44:23Z","title_canon_sha256":"fa9fdbd8dd27fe6c7214f3aac896a576dfde48b38777c579b5db9d85b92b92ea"},"schema_version":"1.0","source":{"id":"2203.15399","kind":"arxiv","version":1}},"canonical_sha256":"6330937849dbdd872def384684a80bf49ddb52df8fa33ebef1e92d1844b6c8b7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"6330937849dbdd872def384684a80bf49ddb52df8fa33ebef1e92d1844b6c8b7","first_computed_at":"2026-07-05T04:09:24.969032Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:09:24.969032Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"CGju3bERo9GFaU3hxcMBfqpgAYekANurphjFsRF0cV9pcFwaPy6PRY2mMIN1SoIGt9SuNuxVwqqQIGkCJxyzBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T04:09:24.969446Z","signed_message":"canonical_sha256_bytes"},"source_id":"2203.15399","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:11591e14896716dfbe09d2419beafdb493f98184a9bfaf135011a1ceb753d5de","sha256:53003774cbaebd02cb9c5585516d69808018f3464f55d476188ff19aebabb210"],"state_sha256":"8639e4d4fe50b6cee368b669dba8172493fe6ea6b644aec3a6501e5964081284"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3OWG4diLSWPiGvTfj7stF0yjaEs+wvEOwS7Gv1LIbn8fNFZjS6fsymwjFeUnPPcLJT6x7EDrMXFc6uClNi3ACQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T20:36:51.469995Z","bundle_sha256":"c3813a7c6e8bcc8e2ba42f8a8f8ab1227f26387b2f5924b0bca46eb31b485b62"}}