{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:IIZPI7BPMH4ERUZYQ5Z7M6W2QH","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":"e0ef5cdc97e3db5dc7d5e5280bdc852f97f09cd359bd96ac3d4a1748827e4d99","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2010-02-24T05:50:07Z","title_canon_sha256":"29cdf6e2968133b874bde34b8902be6eaeccf9b6f1b67c602a17f0d10c4a9278"},"schema_version":"1.0","source":{"id":"1002.4470","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1002.4470","created_at":"2026-05-18T00:59:11Z"},{"alias_kind":"arxiv_version","alias_value":"1002.4470v2","created_at":"2026-05-18T00:59:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1002.4470","created_at":"2026-05-18T00:59:11Z"},{"alias_kind":"pith_short_12","alias_value":"IIZPI7BPMH4E","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_16","alias_value":"IIZPI7BPMH4ERUZY","created_at":"2026-05-18T12:26:09Z"},{"alias_kind":"pith_short_8","alias_value":"IIZPI7BP","created_at":"2026-05-18T12:26:09Z"}],"graph_snapshots":[{"event_id":"sha256:a85fe1601d2d11b263e58ce07b258d8c5b78fdee111a1203fc03056dbd49f7ab","target":"graph","created_at":"2026-05-18T00:59:11Z","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 presents a large-system analysis of the performance of joint channel estimation, multiuser detection, and per-user decoding (CE-MUDD) for randomly-spread multiple-input multiple-output (MIMO) direct-sequence code-division multiple-access (DS-CDMA) systems. A suboptimal receiver based on successive decoding in conjunction with linear minimum mean-squared error (LMMSE) channel estimation is investigated. The replica method, developed in statistical mechanics, is used to evaluate the performance in the large-system limit, where the number of users and the spreading factor tend to infin","authors_text":"Keigo Takeuchi, Mikko Vehkaperae, Ralf R. Mueller, Toshiyuki Tanaka","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2010-02-24T05:50:07Z","title":"Large-System Analysis of Joint Channel and Data Estimation for MIMO DS-CDMA Systems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1002.4470","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:c56cf236e756464a66ad2ff950930bb5676f3da508753a9b7b8dde9b3eb69a0c","target":"record","created_at":"2026-05-18T00:59:11Z","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":"e0ef5cdc97e3db5dc7d5e5280bdc852f97f09cd359bd96ac3d4a1748827e4d99","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2010-02-24T05:50:07Z","title_canon_sha256":"29cdf6e2968133b874bde34b8902be6eaeccf9b6f1b67c602a17f0d10c4a9278"},"schema_version":"1.0","source":{"id":"1002.4470","kind":"arxiv","version":2}},"canonical_sha256":"4232f47c2f61f848d3388773f67ada81cd4ab390e821ce92c33da4f3579dce2d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"4232f47c2f61f848d3388773f67ada81cd4ab390e821ce92c33da4f3579dce2d","first_computed_at":"2026-05-18T00:59:11.021084Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:59:11.021084Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"df3Mxv9iWz4kDGAEc4+XDaXYgDfI21zFc5T/zKqVB7o7O+TqIPyStITvYZWi9CsR+AcKh0lHL6W+uG0co9kkAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:59:11.021807Z","signed_message":"canonical_sha256_bytes"},"source_id":"1002.4470","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c56cf236e756464a66ad2ff950930bb5676f3da508753a9b7b8dde9b3eb69a0c","sha256:a85fe1601d2d11b263e58ce07b258d8c5b78fdee111a1203fc03056dbd49f7ab"],"state_sha256":"4e5a9eb2080ac9c4e823123a124866dfc0c9aef4896f4b93b16fddecba831d62"}