{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:WMM5JUYE3H463TT7AUY2GZN3MM","short_pith_number":"pith:WMM5JUYE","schema_version":"1.0","canonical_sha256":"b319d4d304d9f9edce7f0531a365bb633ab58465373787c97330fedfa5684c28","source":{"kind":"arxiv","id":"2511.08182","version":1},"attestation_state":"computed","paper":{"title":"Symbol Detection in Multi-channel Multi-tag Ambient Backscatter Communication Under IQ Imbalance","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Daniel Benevides da Costa, Guangyue Lu, Liqin Shi, Yinghui Ye, Yuxin Li","submitted_at":"2025-11-11T12:46:32Z","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"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2511.08182","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2025-11-11T12:46:32Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"38b54068c40c615bacf23b83505ebd7102af7c61976e71edd0682f4f5f584c14","abstract_canon_sha256":"a13289a5707ff5557fffadf74d8c9736f7e7fca5a558435212f47c1232261f30"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-09T02:07:12.823411Z","signature_b64":"eTEXbehOB9tUWo8TfXn9Uq70t9Kj+5dfJko29LkLnO62dfUFEh2EAbTEOTM48sUpoY2mj41vK2ZDohs/GlGlCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b319d4d304d9f9edce7f0531a365bb633ab58465373787c97330fedfa5684c28","last_reissued_at":"2026-06-09T02:07:12.822441Z","signature_status":"signed_v1","first_computed_at":"2026-06-09T02:07:12.822441Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Symbol Detection in Multi-channel Multi-tag Ambient Backscatter Communication Under IQ Imbalance","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Daniel Benevides da Costa, Guangyue Lu, Liqin Shi, Yinghui Ye, Yuxin Li","submitted_at":"2025-11-11T12:46:32Z","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"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2511.08182","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/2511.08182/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2511.08182","created_at":"2026-06-09T02:07:12.822556+00:00"},{"alias_kind":"arxiv_version","alias_value":"2511.08182v1","created_at":"2026-06-09T02:07:12.822556+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2511.08182","created_at":"2026-06-09T02:07:12.822556+00:00"},{"alias_kind":"pith_short_12","alias_value":"WMM5JUYE3H46","created_at":"2026-06-09T02:07:12.822556+00:00"},{"alias_kind":"pith_short_16","alias_value":"WMM5JUYE3H463TT7","created_at":"2026-06-09T02:07:12.822556+00:00"},{"alias_kind":"pith_short_8","alias_value":"WMM5JUYE","created_at":"2026-06-09T02:07:12.822556+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/WMM5JUYE3H463TT7AUY2GZN3MM","json":"https://pith.science/pith/WMM5JUYE3H463TT7AUY2GZN3MM.json","graph_json":"https://pith.science/api/pith-number/WMM5JUYE3H463TT7AUY2GZN3MM/graph.json","events_json":"https://pith.science/api/pith-number/WMM5JUYE3H463TT7AUY2GZN3MM/events.json","paper":"https://pith.science/paper/WMM5JUYE"},"agent_actions":{"view_html":"https://pith.science/pith/WMM5JUYE3H463TT7AUY2GZN3MM","download_json":"https://pith.science/pith/WMM5JUYE3H463TT7AUY2GZN3MM.json","view_paper":"https://pith.science/paper/WMM5JUYE","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2511.08182&json=true","fetch_graph":"https://pith.science/api/pith-number/WMM5JUYE3H463TT7AUY2GZN3MM/graph.json","fetch_events":"https://pith.science/api/pith-number/WMM5JUYE3H463TT7AUY2GZN3MM/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/WMM5JUYE3H463TT7AUY2GZN3MM/action/timestamp_anchor","attest_storage":"https://pith.science/pith/WMM5JUYE3H463TT7AUY2GZN3MM/action/storage_attestation","attest_author":"https://pith.science/pith/WMM5JUYE3H463TT7AUY2GZN3MM/action/author_attestation","sign_citation":"https://pith.science/pith/WMM5JUYE3H463TT7AUY2GZN3MM/action/citation_signature","submit_replication":"https://pith.science/pith/WMM5JUYE3H463TT7AUY2GZN3MM/action/replication_record"}},"created_at":"2026-06-09T02:07:12.822556+00:00","updated_at":"2026-06-09T02:07:12.822556+00:00"}