{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:MWROTNV6RU3I6OZDCPCVJSBCUE","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":"afae6aadbcaf2db9504cfda05bff728e695a1a7d951fc87275670695ef104d90","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2013-11-20T06:42:18Z","title_canon_sha256":"80de4de2ebc2504970a4907e9037f6ac5997ea6dafb37872cf3e50812a53753f"},"schema_version":"1.0","source":{"id":"1311.4964","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1311.4964","created_at":"2026-05-18T02:19:06Z"},{"alias_kind":"arxiv_version","alias_value":"1311.4964v1","created_at":"2026-05-18T02:19:06Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1311.4964","created_at":"2026-05-18T02:19:06Z"},{"alias_kind":"pith_short_12","alias_value":"MWROTNV6RU3I","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_16","alias_value":"MWROTNV6RU3I6OZD","created_at":"2026-05-18T12:27:52Z"},{"alias_kind":"pith_short_8","alias_value":"MWROTNV6","created_at":"2026-05-18T12:27:52Z"}],"graph_snapshots":[{"event_id":"sha256:f8cbb124ce912397c72fcece766f49a20b829e4bcd176d9629e7086d27d7e950","target":"graph","created_at":"2026-05-18T02:19:06Z","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":"For overlay cognitive radio networks (CRNs), transform domain communication system (TDCS) has been proposed to support multiuser communications through spectrum bin nulling and frequency domain spreading. In TDCS-based CRNs, each user is assigned a specific pseudorandom spreading sequence. However, the existence of multiuser interference (MUI) is one of main concerns, due to the non-zero cross-correlations between any pair of TDCS signals. In this paper, a novel framework of TDCS-based CRNs with the joint design of sequences and modulation schemes is presented to realize MUI avoidance. With th","authors_text":"Guoan Bi, Shaoqian Li, Su H, Yong Liang Guan","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2013-11-20T06:42:18Z","title":"TDCS-based Cognitive Radio Networks with Multiuser Interference Avoidance"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1311.4964","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:d9b3f77bcb24a94d1df3da917b7b2635afb97fe5f1bbf649b9a53d1ed12ec6e9","target":"record","created_at":"2026-05-18T02:19:06Z","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":"afae6aadbcaf2db9504cfda05bff728e695a1a7d951fc87275670695ef104d90","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2013-11-20T06:42:18Z","title_canon_sha256":"80de4de2ebc2504970a4907e9037f6ac5997ea6dafb37872cf3e50812a53753f"},"schema_version":"1.0","source":{"id":"1311.4964","kind":"arxiv","version":1}},"canonical_sha256":"65a2e9b6be8d368f3b2313c554c822a1120406494becfcd0485cfb424c3c2a14","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"65a2e9b6be8d368f3b2313c554c822a1120406494becfcd0485cfb424c3c2a14","first_computed_at":"2026-05-18T02:19:06.238016Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:19:06.238016Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"k/BrF7ZVPn6mxcaeH2C8sAZZ+6BOKoLbbhrDnUCaRcy3OQDu23TAzLQ1wGhyCLoMeU0O989UlIOJd7DTLLRgDg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:19:06.238686Z","signed_message":"canonical_sha256_bytes"},"source_id":"1311.4964","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d9b3f77bcb24a94d1df3da917b7b2635afb97fe5f1bbf649b9a53d1ed12ec6e9","sha256:f8cbb124ce912397c72fcece766f49a20b829e4bcd176d9629e7086d27d7e950"],"state_sha256":"49ac7fc09ea30637bb59014e45e1061fafd45e50585a5d92944e4a0a4f5de451"}