{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:7SKW4XIH3RXVWHB6WGF2ASS2VJ","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":"f34fc16ad112861d0aac25b341cd76a80aa95f242949cc6c2945254bda081910","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2016-03-02T10:14:08Z","title_canon_sha256":"b99f87d345055b3d70b447824ff35736b6f3ba417010efdd874ced44268b04de"},"schema_version":"1.0","source":{"id":"1603.00644","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1603.00644","created_at":"2026-05-18T01:18:52Z"},{"alias_kind":"arxiv_version","alias_value":"1603.00644v2","created_at":"2026-05-18T01:18:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1603.00644","created_at":"2026-05-18T01:18:52Z"},{"alias_kind":"pith_short_12","alias_value":"7SKW4XIH3RXV","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_16","alias_value":"7SKW4XIH3RXVWHB6","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_8","alias_value":"7SKW4XIH","created_at":"2026-05-18T12:30:04Z"}],"graph_snapshots":[{"event_id":"sha256:6e772a42cf50caf4cd0377f8a11ba4e9c460441bc8ac47675ca7620ac376c123","target":"graph","created_at":"2026-05-18T01:18:52Z","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"},"paper":{"abstract_excerpt":"It's known that the bit errors of polar codes with successive cancellation (SC) decoding are coupled. We call the coupled information bits the correlated bits. In this paper, concatenation schemes are studied for polar codes (as inner codes) and LDPC codes (as outer codes). In a conventional concatenation scheme, to achieve a better BER performance, one can divide all $N_l$ bits in a LDPC block into $N_l$ polar blocks to completely de-correlate the possible coupled errors. In this paper, we propose a novel interleaving scheme between a LDPC code and a polar code which breaks the correlation of","authors_text":"Liping Li, Ya Meng, Yanjun Hu","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2016-03-02T10:14:08Z","title":"A Novel Interleaving Scheme for Polar Codes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.00644","kind":"arxiv","version":2},"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":"sha256:8bb62f969ae3a8571249ea680da0fc6024ab08439b7be40eb65be6fefe598099","target":"record","created_at":"2026-05-18T01:18:52Z","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":"f34fc16ad112861d0aac25b341cd76a80aa95f242949cc6c2945254bda081910","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2016-03-02T10:14:08Z","title_canon_sha256":"b99f87d345055b3d70b447824ff35736b6f3ba417010efdd874ced44268b04de"},"schema_version":"1.0","source":{"id":"1603.00644","kind":"arxiv","version":2}},"canonical_sha256":"fc956e5d07dc6f5b1c3eb18ba04a5aaa6b9884772fa4911684e2bf10dbb91588","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fc956e5d07dc6f5b1c3eb18ba04a5aaa6b9884772fa4911684e2bf10dbb91588","first_computed_at":"2026-05-18T01:18:52.172028Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:18:52.172028Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"H2xnqCxZZoRsvW3tGd/OSJGzWwVKJEbAeI7XNZXWf7CSgGR5jHI/KVvNJqAK7XS1LVgmcpOgPHl4sPbywEABCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:18:52.172636Z","signed_message":"canonical_sha256_bytes"},"source_id":"1603.00644","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8bb62f969ae3a8571249ea680da0fc6024ab08439b7be40eb65be6fefe598099","sha256:6e772a42cf50caf4cd0377f8a11ba4e9c460441bc8ac47675ca7620ac376c123"],"state_sha256":"e8f3814739d79cf43a2d7347979cbc708b3f465bf7079a5c9f0cb51333b5c9b8"}