{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:67GCPNLX3VMEKZGF6EOUPQIIFC","short_pith_number":"pith:67GCPNLX","schema_version":"1.0","canonical_sha256":"f7cc27b577dd584564c5f11d47c1082880be455cb639cd252dc3f1cc4bbae55b","source":{"kind":"arxiv","id":"1309.3864","version":1},"attestation_state":"computed","paper":{"title":"Unequal Error Protection by Partial Superposition Transmission Using LDPC Codes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Baoming Bai, Chulong Liang, Kechao Huang, Xiao Ma","submitted_at":"2013-09-16T08:57:50Z","abstract_excerpt":"In this paper, we consider designing low-density parity-check (LDPC) coded modulation systems to achieve unequal error protection (UEP). We propose a new UEP approach by partial superposition transmission called UEP-by-PST. In the UEP-by-PST system, the information sequence is distinguished as two parts, the more important data (MID) and the less important data (LID), both of which are coded with LDPC codes. The codeword that corresponds to the MID is superimposed on the codeword that corresponds to the LID. The system performance can be analyzed by using discretized density evolution. Also pr"},"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":"1309.3864","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2013-09-16T08:57:50Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"ba5a0a3552adfb13da3f2107ed5ad5fce09cc2598c1f2b2d1d98c4577af034e8","abstract_canon_sha256":"e9147554617a36f4336185d377aadd49e8bcb2a9d7e9331b78d630a367dc4473"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:13:12.086119Z","signature_b64":"wrqcCsohW54mYKBTLeZjNQwYFPdw42pG3kIZ/tn5U97+FaJO/iN8fTmGJEqhaTe4iAkXR9rm2UBnQa+ubFkbDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f7cc27b577dd584564c5f11d47c1082880be455cb639cd252dc3f1cc4bbae55b","last_reissued_at":"2026-05-18T03:13:12.085582Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:13:12.085582Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Unequal Error Protection by Partial Superposition Transmission Using LDPC Codes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Baoming Bai, Chulong Liang, Kechao Huang, Xiao Ma","submitted_at":"2013-09-16T08:57:50Z","abstract_excerpt":"In this paper, we consider designing low-density parity-check (LDPC) coded modulation systems to achieve unequal error protection (UEP). We propose a new UEP approach by partial superposition transmission called UEP-by-PST. In the UEP-by-PST system, the information sequence is distinguished as two parts, the more important data (MID) and the less important data (LID), both of which are coded with LDPC codes. The codeword that corresponds to the MID is superimposed on the codeword that corresponds to the LID. The system performance can be analyzed by using discretized density evolution. Also pr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.3864","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":""},"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":"1309.3864","created_at":"2026-05-18T03:13:12.085666+00:00"},{"alias_kind":"arxiv_version","alias_value":"1309.3864v1","created_at":"2026-05-18T03:13:12.085666+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.3864","created_at":"2026-05-18T03:13:12.085666+00:00"},{"alias_kind":"pith_short_12","alias_value":"67GCPNLX3VME","created_at":"2026-05-18T12:27:36.564083+00:00"},{"alias_kind":"pith_short_16","alias_value":"67GCPNLX3VMEKZGF","created_at":"2026-05-18T12:27:36.564083+00:00"},{"alias_kind":"pith_short_8","alias_value":"67GCPNLX","created_at":"2026-05-18T12:27:36.564083+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/67GCPNLX3VMEKZGF6EOUPQIIFC","json":"https://pith.science/pith/67GCPNLX3VMEKZGF6EOUPQIIFC.json","graph_json":"https://pith.science/api/pith-number/67GCPNLX3VMEKZGF6EOUPQIIFC/graph.json","events_json":"https://pith.science/api/pith-number/67GCPNLX3VMEKZGF6EOUPQIIFC/events.json","paper":"https://pith.science/paper/67GCPNLX"},"agent_actions":{"view_html":"https://pith.science/pith/67GCPNLX3VMEKZGF6EOUPQIIFC","download_json":"https://pith.science/pith/67GCPNLX3VMEKZGF6EOUPQIIFC.json","view_paper":"https://pith.science/paper/67GCPNLX","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1309.3864&json=true","fetch_graph":"https://pith.science/api/pith-number/67GCPNLX3VMEKZGF6EOUPQIIFC/graph.json","fetch_events":"https://pith.science/api/pith-number/67GCPNLX3VMEKZGF6EOUPQIIFC/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/67GCPNLX3VMEKZGF6EOUPQIIFC/action/timestamp_anchor","attest_storage":"https://pith.science/pith/67GCPNLX3VMEKZGF6EOUPQIIFC/action/storage_attestation","attest_author":"https://pith.science/pith/67GCPNLX3VMEKZGF6EOUPQIIFC/action/author_attestation","sign_citation":"https://pith.science/pith/67GCPNLX3VMEKZGF6EOUPQIIFC/action/citation_signature","submit_replication":"https://pith.science/pith/67GCPNLX3VMEKZGF6EOUPQIIFC/action/replication_record"}},"created_at":"2026-05-18T03:13:12.085666+00:00","updated_at":"2026-05-18T03:13:12.085666+00:00"}