{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:VYA4DI2ZFGEDYC6XDRHGUZHZYV","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":"c8d161f33e0bf7d6e6a920b4cd5186c3cc55ea75aaa75f3b1cf1117ada420ebf","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-07-26T07:04:49Z","title_canon_sha256":"53bbc63e3d81d56fc460201f44a51fc275939c61ef10de04c4144fb60196acdb"},"schema_version":"1.0","source":{"id":"1707.08305","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.08305","created_at":"2026-05-18T00:39:24Z"},{"alias_kind":"arxiv_version","alias_value":"1707.08305v1","created_at":"2026-05-18T00:39:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.08305","created_at":"2026-05-18T00:39:24Z"},{"alias_kind":"pith_short_12","alias_value":"VYA4DI2ZFGED","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"VYA4DI2ZFGEDYC6X","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"VYA4DI2Z","created_at":"2026-05-18T12:31:49Z"}],"graph_snapshots":[{"event_id":"sha256:142f9596ba9213599434f321ff8666f06f0f6cd78e76a3630720b244974a171c","target":"graph","created_at":"2026-05-18T00:39:24Z","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":"This paper focuses on the design of non-orthogonal multiple access (NOMA) in a classical two-transmitter two-receiver Z-channel, wherein one transmitter sends information to its intended receiver from the direct link while the other transmitter sends information to both receivers from the direct and cross links. Unlike most existing designs using (continuous) Gaussian input distribution, we consider the practical finite-alphabet (i.e., discrete) inputs by assuming that the widely-used quadrature amplitude modulation (QAM) constellations are adopted by both transmitters. To balance the error pe","authors_text":"He Chen, Jian-Kang Zhang, Lei Huang, Zheng Dong","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-07-26T07:04:49Z","title":"On Non-Orthogonal Multiple Access with Finite-Alphabet Inputs in Z-Channels"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.08305","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:f0aadc7ff26e8a87112aebff70c962945eee36b51e44673e9bfc668678c9efbe","target":"record","created_at":"2026-05-18T00:39:24Z","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":"c8d161f33e0bf7d6e6a920b4cd5186c3cc55ea75aaa75f3b1cf1117ada420ebf","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-07-26T07:04:49Z","title_canon_sha256":"53bbc63e3d81d56fc460201f44a51fc275939c61ef10de04c4144fb60196acdb"},"schema_version":"1.0","source":{"id":"1707.08305","kind":"arxiv","version":1}},"canonical_sha256":"ae01c1a35929883c0bd71c4e6a64f9c5563a3f7926866b8e1deab023d5d8e049","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ae01c1a35929883c0bd71c4e6a64f9c5563a3f7926866b8e1deab023d5d8e049","first_computed_at":"2026-05-18T00:39:24.658510Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:39:24.658510Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"e94Rk7qAhgSXxb1iJwJpuoASqjXZKqnxKXNsiu/zldOVbfXGDDm9IZOKLvXbqw1Vzf9zOQjqBbvTikK2J7R8Bw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:39:24.659163Z","signed_message":"canonical_sha256_bytes"},"source_id":"1707.08305","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f0aadc7ff26e8a87112aebff70c962945eee36b51e44673e9bfc668678c9efbe","sha256:142f9596ba9213599434f321ff8666f06f0f6cd78e76a3630720b244974a171c"],"state_sha256":"e7392fa996d70c6a6df7b4a6ba8167028456607f2540e9f784dbc793fa986315"}