{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:333EYDL7OHJTOLACDWQQ5TIOG6","short_pith_number":"pith:333EYDL7","canonical_record":{"source":{"id":"2205.08603","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2022-05-17T19:47:31Z","cross_cats_sorted":["cs.ET","cs.LG"],"title_canon_sha256":"2d7b671f7a20cdf14c2213fdc0ca6d0a8f029cbfd8076a3257185af98955e1ce","abstract_canon_sha256":"00fabd4583d94a69c4c8e762c67c196508824e8278a8ebd7e7965b6caec5cd21"},"schema_version":"1.0"},"canonical_sha256":"def64c0d7f71d3372c021da10ecd0e3789c33e4684a7040b938878a5ca4f547a","source":{"kind":"arxiv","id":"2205.08603","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2205.08603","created_at":"2026-07-05T04:24:27Z"},{"alias_kind":"arxiv_version","alias_value":"2205.08603v1","created_at":"2026-07-05T04:24:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2205.08603","created_at":"2026-07-05T04:24:27Z"},{"alias_kind":"pith_short_12","alias_value":"333EYDL7OHJT","created_at":"2026-07-05T04:24:27Z"},{"alias_kind":"pith_short_16","alias_value":"333EYDL7OHJTOLAC","created_at":"2026-07-05T04:24:27Z"},{"alias_kind":"pith_short_8","alias_value":"333EYDL7","created_at":"2026-07-05T04:24:27Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:333EYDL7OHJTOLACDWQQ5TIOG6","target":"record","payload":{"canonical_record":{"source":{"id":"2205.08603","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2022-05-17T19:47:31Z","cross_cats_sorted":["cs.ET","cs.LG"],"title_canon_sha256":"2d7b671f7a20cdf14c2213fdc0ca6d0a8f029cbfd8076a3257185af98955e1ce","abstract_canon_sha256":"00fabd4583d94a69c4c8e762c67c196508824e8278a8ebd7e7965b6caec5cd21"},"schema_version":"1.0"},"canonical_sha256":"def64c0d7f71d3372c021da10ecd0e3789c33e4684a7040b938878a5ca4f547a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:24:27.064266Z","signature_b64":"mPpkHC2grlWrrBQ1qLA+F6mJo6calArXWDZ2gzY3z63HDIlVgvm1kxBgFepF/7eHaGO2AvN1qC27GVSUmxjYCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"def64c0d7f71d3372c021da10ecd0e3789c33e4684a7040b938878a5ca4f547a","last_reissued_at":"2026-07-05T04:24:27.063882Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:24:27.063882Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2205.08603","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":"2026-07-05T04:24:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ndwrepLLVVZ14dS7fGRoM7e6CRTWLUB+gaGuF3bcv/s7iLA+H6RQDKNEXlyg+z75tbwKDjW0vnV5RXuiWMzSDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T05:44:35.730678Z"},"content_sha256":"ea4f238c6673557e30359d87c7e0fd3fc8095b9c81a2fd9e7d424341fc2fe243","schema_version":"1.0","event_id":"sha256:ea4f238c6673557e30359d87c7e0fd3fc8095b9c81a2fd9e7d424341fc2fe243"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:333EYDL7OHJTOLACDWQQ5TIOG6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Variational Quantum Compressed Sensing for Joint User and Channel State Acquisition in Grant-Free Device Access Systems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.ET","cs.LG"],"primary_cat":"eess.SP","authors_text":"Bryan Liu, Kieran Parsons, Toshiaki Koike-Akino, Ye Wang","submitted_at":"2022-05-17T19:47:31Z","abstract_excerpt":"This paper introduces a new quantum computing framework integrated with a two-step compressed sensing technique, applied to a joint channel estimation and user identification problem. We propose a variational quantum circuit (VQC) design as a new denoising solution. For a practical grant-free communications system having correlated device activities, variational quantum parameters for Pauli rotation gates in the proposed VQC system are optimized to facilitate to the non-linear estimation. Numerical results show that the VQC method can outperform modern compressed sensing techniques using an el"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2205.08603","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/2205.08603/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":"2026-07-05T04:24:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1qTTfK76HHZiYHoeE+mPm1dVd89vrzcLouJVv24Wuw1bNaIcIXCq32tC6yr4A4IrGfej+wkE9SYtQ9yj8LHcCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T05:44:35.731214Z"},"content_sha256":"f3e14680e2626e78a42587c413a5d5c397c33c1071aada67725926c5f8231827","schema_version":"1.0","event_id":"sha256:f3e14680e2626e78a42587c413a5d5c397c33c1071aada67725926c5f8231827"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/333EYDL7OHJTOLACDWQQ5TIOG6/bundle.json","state_url":"https://pith.science/pith/333EYDL7OHJTOLACDWQQ5TIOG6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/333EYDL7OHJTOLACDWQQ5TIOG6/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":"2026-08-04T05:44:35Z","links":{"resolver":"https://pith.science/pith/333EYDL7OHJTOLACDWQQ5TIOG6","bundle":"https://pith.science/pith/333EYDL7OHJTOLACDWQQ5TIOG6/bundle.json","state":"https://pith.science/pith/333EYDL7OHJTOLACDWQQ5TIOG6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/333EYDL7OHJTOLACDWQQ5TIOG6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:333EYDL7OHJTOLACDWQQ5TIOG6","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":"00fabd4583d94a69c4c8e762c67c196508824e8278a8ebd7e7965b6caec5cd21","cross_cats_sorted":["cs.ET","cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2022-05-17T19:47:31Z","title_canon_sha256":"2d7b671f7a20cdf14c2213fdc0ca6d0a8f029cbfd8076a3257185af98955e1ce"},"schema_version":"1.0","source":{"id":"2205.08603","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2205.08603","created_at":"2026-07-05T04:24:27Z"},{"alias_kind":"arxiv_version","alias_value":"2205.08603v1","created_at":"2026-07-05T04:24:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2205.08603","created_at":"2026-07-05T04:24:27Z"},{"alias_kind":"pith_short_12","alias_value":"333EYDL7OHJT","created_at":"2026-07-05T04:24:27Z"},{"alias_kind":"pith_short_16","alias_value":"333EYDL7OHJTOLAC","created_at":"2026-07-05T04:24:27Z"},{"alias_kind":"pith_short_8","alias_value":"333EYDL7","created_at":"2026-07-05T04:24:27Z"}],"graph_snapshots":[{"event_id":"sha256:f3e14680e2626e78a42587c413a5d5c397c33c1071aada67725926c5f8231827","target":"graph","created_at":"2026-07-05T04:24:27Z","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/2205.08603/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This paper introduces a new quantum computing framework integrated with a two-step compressed sensing technique, applied to a joint channel estimation and user identification problem. We propose a variational quantum circuit (VQC) design as a new denoising solution. For a practical grant-free communications system having correlated device activities, variational quantum parameters for Pauli rotation gates in the proposed VQC system are optimized to facilitate to the non-linear estimation. Numerical results show that the VQC method can outperform modern compressed sensing techniques using an el","authors_text":"Bryan Liu, Kieran Parsons, Toshiaki Koike-Akino, Ye Wang","cross_cats":["cs.ET","cs.LG"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2022-05-17T19:47:31Z","title":"Variational Quantum Compressed Sensing for Joint User and Channel State Acquisition in Grant-Free Device Access Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2205.08603","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:ea4f238c6673557e30359d87c7e0fd3fc8095b9c81a2fd9e7d424341fc2fe243","target":"record","created_at":"2026-07-05T04:24:27Z","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":"00fabd4583d94a69c4c8e762c67c196508824e8278a8ebd7e7965b6caec5cd21","cross_cats_sorted":["cs.ET","cs.LG"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2022-05-17T19:47:31Z","title_canon_sha256":"2d7b671f7a20cdf14c2213fdc0ca6d0a8f029cbfd8076a3257185af98955e1ce"},"schema_version":"1.0","source":{"id":"2205.08603","kind":"arxiv","version":1}},"canonical_sha256":"def64c0d7f71d3372c021da10ecd0e3789c33e4684a7040b938878a5ca4f547a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"def64c0d7f71d3372c021da10ecd0e3789c33e4684a7040b938878a5ca4f547a","first_computed_at":"2026-07-05T04:24:27.063882Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:24:27.063882Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mPpkHC2grlWrrBQ1qLA+F6mJo6calArXWDZ2gzY3z63HDIlVgvm1kxBgFepF/7eHaGO2AvN1qC27GVSUmxjYCA==","signature_status":"signed_v1","signed_at":"2026-07-05T04:24:27.064266Z","signed_message":"canonical_sha256_bytes"},"source_id":"2205.08603","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ea4f238c6673557e30359d87c7e0fd3fc8095b9c81a2fd9e7d424341fc2fe243","sha256:f3e14680e2626e78a42587c413a5d5c397c33c1071aada67725926c5f8231827"],"state_sha256":"7266087636b07853dfae655b57e6a33419e36bd1b13210a0dd01ad8e16df832e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TiWFwr/biPBs549th4NPscHKgGnbt+AdUjFAI1lBZmaZ7LfUeHelZkgrlpjozRQqxe5QmSeXQTFGR8UEToSYBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T05:44:35.737621Z","bundle_sha256":"950f1b055454a9b4bd336f3777e865f965cd40ed6ccfc5f10baa888871d236c4"}}