{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:5V3ICDIFNH2DFLMUNKXC5TBKC3","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":"c350cc39a11365a791a8ce66b4dc700aeb48bf0890035d3defcdcd73d1d3423a","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2013-05-11T01:27:47Z","title_canon_sha256":"797a3d2a4877f320f82a839275215dab200752d0a3f19368a22c3180439158fd"},"schema_version":"1.0","source":{"id":"1305.2459","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.2459","created_at":"2026-05-18T03:25:57Z"},{"alias_kind":"arxiv_version","alias_value":"1305.2459v1","created_at":"2026-05-18T03:25:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.2459","created_at":"2026-05-18T03:25:57Z"},{"alias_kind":"pith_short_12","alias_value":"5V3ICDIFNH2D","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_16","alias_value":"5V3ICDIFNH2DFLMU","created_at":"2026-05-18T12:27:34Z"},{"alias_kind":"pith_short_8","alias_value":"5V3ICDIF","created_at":"2026-05-18T12:27:34Z"}],"graph_snapshots":[{"event_id":"sha256:68c1977b9b13c1d33e98f925f319dc6497f15ea279015c601534aff057fe9324","target":"graph","created_at":"2026-05-18T03:25:57Z","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":"Interference alignment (IA) is a cooperative transmission strategy that improves spectral efficiency in high signal-to-noise ratio (SNR) environments, yet performs poorly in low-SNR scenarios. This limits IA's utility in cellular systems as it is ineffective in improving cell-edge data rates. Modern cellular architectures such as distributed antenna systems (DAS), however, promise to boost cell-edge SNR, creating the environment needed to realize practical IA gains. Existing IA solutions cannot be applied to DAS as they neglect the per-remote-radio power constraints imposed on distributed prec","authors_text":"Jonathan Starr, Omar El Ayach, Robert W. Heath Jr","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2013-05-11T01:27:47Z","title":"Interference Alignment in Distributed Antenna Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.2459","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:af149df614893cd38a5ad5a09ace55f77f6a9a53ae25dfc5535c39fa994666be","target":"record","created_at":"2026-05-18T03:25:57Z","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":"c350cc39a11365a791a8ce66b4dc700aeb48bf0890035d3defcdcd73d1d3423a","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2013-05-11T01:27:47Z","title_canon_sha256":"797a3d2a4877f320f82a839275215dab200752d0a3f19368a22c3180439158fd"},"schema_version":"1.0","source":{"id":"1305.2459","kind":"arxiv","version":1}},"canonical_sha256":"ed76810d0569f432ad946aae2ecc2a16d5967b7d96ea942bd5b5621de105676a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ed76810d0569f432ad946aae2ecc2a16d5967b7d96ea942bd5b5621de105676a","first_computed_at":"2026-05-18T03:25:57.805441Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:25:57.805441Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"mxJNA4vQV4r2S7xLQvIR6RLIwhshI6yK/SQrgjSVtg/fNo8K7pacnhZ8egqhOh9hhfRpJ7Loi4g/OiuO1bIfAg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:25:57.806041Z","signed_message":"canonical_sha256_bytes"},"source_id":"1305.2459","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:af149df614893cd38a5ad5a09ace55f77f6a9a53ae25dfc5535c39fa994666be","sha256:68c1977b9b13c1d33e98f925f319dc6497f15ea279015c601534aff057fe9324"],"state_sha256":"8c7c452d8625fe48db3a06972ba1f934d75223ed2ff5a6ead9d43178c6611956"}