{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:B74KL5CKP6TIUGK7DLBQB4XLP6","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":"b623c1627a6a149e10866b5ef69b61a86dffa92e986826711a0c8d4d5f246fc6","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2009-03-16T09:35:04Z","title_canon_sha256":"e6187a4154909ac06850cdfbe92641c771e6f56e41c2c84d4acd575b537c88ff"},"schema_version":"1.0","source":{"id":"0903.2711","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0903.2711","created_at":"2026-05-18T04:34:09Z"},{"alias_kind":"arxiv_version","alias_value":"0903.2711v2","created_at":"2026-05-18T04:34:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0903.2711","created_at":"2026-05-18T04:34:09Z"},{"alias_kind":"pith_short_12","alias_value":"B74KL5CKP6TI","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_16","alias_value":"B74KL5CKP6TIUGK7","created_at":"2026-05-18T12:25:58Z"},{"alias_kind":"pith_short_8","alias_value":"B74KL5CK","created_at":"2026-05-18T12:25:58Z"}],"graph_snapshots":[{"event_id":"sha256:32220b961c6de4d91f1e640889afb615705ad16a9a3015df667b96d85647f31b","target":"graph","created_at":"2026-05-18T04:34:09Z","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":"We provide a comprehensive performance comparison of soft-output and hard-output demodulators in the context of non-iterative multiple-input multiple-output bit-interleaved coded modulation (MIMO-BICM). Coded bit error rate (BER), widely used in literature for demodulator comparison, has the drawback of depending strongly on the error correcting code being used. This motivates us to propose a code-independent performance measure in terms of system capacity, i.e., mutual information of the equivalent modulation channel that comprises modulator, wireless channel, and demodulator. We present exte","authors_text":"Gerald Matz, Joakim Jalden, Peter Fertl","cross_cats":["math.IT"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2009-03-16T09:35:04Z","title":"Performance Assessment of MIMO-BICM Demodulators based on System Capacity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0903.2711","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":"sha256:35b6b2fee9462c36427d922b27305b881417133a913b765caaff66d92df88130","target":"record","created_at":"2026-05-18T04:34:09Z","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":"b623c1627a6a149e10866b5ef69b61a86dffa92e986826711a0c8d4d5f246fc6","cross_cats_sorted":["math.IT"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2009-03-16T09:35:04Z","title_canon_sha256":"e6187a4154909ac06850cdfbe92641c771e6f56e41c2c84d4acd575b537c88ff"},"schema_version":"1.0","source":{"id":"0903.2711","kind":"arxiv","version":2}},"canonical_sha256":"0ff8a5f44a7fa68a195f1ac300f2eb7fa63376cac8285836d7d43d2ced5d3f71","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0ff8a5f44a7fa68a195f1ac300f2eb7fa63376cac8285836d7d43d2ced5d3f71","first_computed_at":"2026-05-18T04:34:09.033668Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:34:09.033668Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gJfftPNrivH54pNGh9YWFcewcXFyjBKmcXodjLqTVhexPE//PCxvVqzJVnxgnY8WpBaGj3d78X6HnSl/Rko+Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T04:34:09.034259Z","signed_message":"canonical_sha256_bytes"},"source_id":"0903.2711","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:35b6b2fee9462c36427d922b27305b881417133a913b765caaff66d92df88130","sha256:32220b961c6de4d91f1e640889afb615705ad16a9a3015df667b96d85647f31b"],"state_sha256":"e096d0aeb585962ce8f38350fee7c9f7bf567be3d130ad49c7eeccc8e255992b"}