{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:WMM5JUYE3H463TT7AUY2GZN3MM","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":"a13289a5707ff5557fffadf74d8c9736f7e7fca5a558435212f47c1232261f30","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2025-11-11T12:46:32Z","title_canon_sha256":"38b54068c40c615bacf23b83505ebd7102af7c61976e71edd0682f4f5f584c14"},"schema_version":"1.0","source":{"id":"2511.08182","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2511.08182","created_at":"2026-06-09T02:07:12Z"},{"alias_kind":"arxiv_version","alias_value":"2511.08182v1","created_at":"2026-06-09T02:07:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2511.08182","created_at":"2026-06-09T02:07:12Z"},{"alias_kind":"pith_short_12","alias_value":"WMM5JUYE3H46","created_at":"2026-06-09T02:07:12Z"},{"alias_kind":"pith_short_16","alias_value":"WMM5JUYE3H463TT7","created_at":"2026-06-09T02:07:12Z"},{"alias_kind":"pith_short_8","alias_value":"WMM5JUYE","created_at":"2026-06-09T02:07:12Z"}],"graph_snapshots":[{"event_id":"sha256:7a6d99356aaca8e7173261d7ba764f0d46580776cf1838b7873cc7b82faf7c19","target":"graph","created_at":"2026-06-09T02:07:12Z","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/2511.08182/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Ambient backscatter communication (AmBC) offers low-cost and low-power connectivity for Internet of Things (IoT), where a backscatter tag (BT) modulates incident signals transmitted by an ambient radio frequency (RF) source and reflects them to its associated AmBC receiver. In multi-channel multi-tag AmBC, one of major challenges from the aspect of symbol detection is the image channel crosstalk, which is induced by the inevitable in-phase/quadrature (IQ) imbalance. To address this issue, in this paper, we study symbol detection in multi-channel multi-tag AmBC under IQ imbalance. Considering t","authors_text":"Daniel Benevides da Costa, Guangyue Lu, Liqin Shi, Yinghui Ye, Yuxin Li","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2025-11-11T12:46:32Z","title":"Symbol Detection in Multi-channel Multi-tag Ambient Backscatter Communication Under IQ Imbalance"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2511.08182","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":"sha256:013fb4b42ab4c9180220ef6d3dba7f573175c1ff5f9e24e56765789bfea74a7b","target":"record","created_at":"2026-06-09T02:07:12Z","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":"a13289a5707ff5557fffadf74d8c9736f7e7fca5a558435212f47c1232261f30","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2025-11-11T12:46:32Z","title_canon_sha256":"38b54068c40c615bacf23b83505ebd7102af7c61976e71edd0682f4f5f584c14"},"schema_version":"1.0","source":{"id":"2511.08182","kind":"arxiv","version":1}},"canonical_sha256":"b319d4d304d9f9edce7f0531a365bb633ab58465373787c97330fedfa5684c28","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b319d4d304d9f9edce7f0531a365bb633ab58465373787c97330fedfa5684c28","first_computed_at":"2026-06-09T02:07:12.822441Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-09T02:07:12.822441Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"eTEXbehOB9tUWo8TfXn9Uq70t9Kj+5dfJko29LkLnO62dfUFEh2EAbTEOTM48sUpoY2mj41vK2ZDohs/GlGlCw==","signature_status":"signed_v1","signed_at":"2026-06-09T02:07:12.823411Z","signed_message":"canonical_sha256_bytes"},"source_id":"2511.08182","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:013fb4b42ab4c9180220ef6d3dba7f573175c1ff5f9e24e56765789bfea74a7b","sha256:7a6d99356aaca8e7173261d7ba764f0d46580776cf1838b7873cc7b82faf7c19"],"state_sha256":"0a9922b5398b4675a58aa3b26eb959a3636bc8d9944d9caefecc2be7396c6870"}