{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:ZOJLSHZKQ6BIOYOMQBCV4QDKC3","short_pith_number":"pith:ZOJLSHZK","schema_version":"1.0","canonical_sha256":"cb92b91f2a87828761cc80455e406a16dbc98ab2fb073a2abddbd31e8db31ce6","source":{"kind":"arxiv","id":"1310.4347","version":1},"attestation_state":"computed","paper":{"title":"M-ary Detection and q-ary Decoding in Large-Scale MIMO: A Non-Binary Belief Propagation Approach","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"A. Chockalingam, T. Lakshmi Narasimhan","submitted_at":"2013-10-16T12:28:00Z","abstract_excerpt":"In this paper, we propose a non-binary belief propagation approach (NB-BP) for detection of $M$-ary modulation symbols and decoding of $q$-ary LDPC codes in large-scale multiuser MIMO systems. We first propose a message passing based symbol detection algorithm which computes vector messages using a scalar Gaussian approximation of interference, which results in a total complexity of just $O(KN\\sqrt{M})$, where $K$ is the number of uplink users and $N$ is the number of base station (BS) antennas. The proposed NB-BP detector does not need to do a matrix inversion, which gives a complexity advant"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1310.4347","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2013-10-16T12:28:00Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"c11527a26e1cdcd0f60db497a90479eb5e9fccc49fb4d5e43cde111ba8070bf1","abstract_canon_sha256":"7691562a58e0aa9812b373ca98d432ccd0a5c08976ba592de9c1e41bbe616295"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:10:23.094805Z","signature_b64":"A/izUyoQWyR6PQDOGRphPGLMM2h4BMXyjTzXjYJ+57Phj5f2B7HdaJ6w7WijTUcBpjJrxiKF85G7G6Yt5oXEAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cb92b91f2a87828761cc80455e406a16dbc98ab2fb073a2abddbd31e8db31ce6","last_reissued_at":"2026-05-18T03:10:23.094013Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:10:23.094013Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"M-ary Detection and q-ary Decoding in Large-Scale MIMO: A Non-Binary Belief Propagation Approach","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"A. Chockalingam, T. Lakshmi Narasimhan","submitted_at":"2013-10-16T12:28:00Z","abstract_excerpt":"In this paper, we propose a non-binary belief propagation approach (NB-BP) for detection of $M$-ary modulation symbols and decoding of $q$-ary LDPC codes in large-scale multiuser MIMO systems. We first propose a message passing based symbol detection algorithm which computes vector messages using a scalar Gaussian approximation of interference, which results in a total complexity of just $O(KN\\sqrt{M})$, where $K$ is the number of uplink users and $N$ is the number of base station (BS) antennas. The proposed NB-BP detector does not need to do a matrix inversion, which gives a complexity advant"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.4347","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1310.4347","created_at":"2026-05-18T03:10:23.094129+00:00"},{"alias_kind":"arxiv_version","alias_value":"1310.4347v1","created_at":"2026-05-18T03:10:23.094129+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.4347","created_at":"2026-05-18T03:10:23.094129+00:00"},{"alias_kind":"pith_short_12","alias_value":"ZOJLSHZKQ6BI","created_at":"2026-05-18T12:28:09.283467+00:00"},{"alias_kind":"pith_short_16","alias_value":"ZOJLSHZKQ6BIOYOM","created_at":"2026-05-18T12:28:09.283467+00:00"},{"alias_kind":"pith_short_8","alias_value":"ZOJLSHZK","created_at":"2026-05-18T12:28:09.283467+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/ZOJLSHZKQ6BIOYOMQBCV4QDKC3","json":"https://pith.science/pith/ZOJLSHZKQ6BIOYOMQBCV4QDKC3.json","graph_json":"https://pith.science/api/pith-number/ZOJLSHZKQ6BIOYOMQBCV4QDKC3/graph.json","events_json":"https://pith.science/api/pith-number/ZOJLSHZKQ6BIOYOMQBCV4QDKC3/events.json","paper":"https://pith.science/paper/ZOJLSHZK"},"agent_actions":{"view_html":"https://pith.science/pith/ZOJLSHZKQ6BIOYOMQBCV4QDKC3","download_json":"https://pith.science/pith/ZOJLSHZKQ6BIOYOMQBCV4QDKC3.json","view_paper":"https://pith.science/paper/ZOJLSHZK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1310.4347&json=true","fetch_graph":"https://pith.science/api/pith-number/ZOJLSHZKQ6BIOYOMQBCV4QDKC3/graph.json","fetch_events":"https://pith.science/api/pith-number/ZOJLSHZKQ6BIOYOMQBCV4QDKC3/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ZOJLSHZKQ6BIOYOMQBCV4QDKC3/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ZOJLSHZKQ6BIOYOMQBCV4QDKC3/action/storage_attestation","attest_author":"https://pith.science/pith/ZOJLSHZKQ6BIOYOMQBCV4QDKC3/action/author_attestation","sign_citation":"https://pith.science/pith/ZOJLSHZKQ6BIOYOMQBCV4QDKC3/action/citation_signature","submit_replication":"https://pith.science/pith/ZOJLSHZKQ6BIOYOMQBCV4QDKC3/action/replication_record"}},"created_at":"2026-05-18T03:10:23.094129+00:00","updated_at":"2026-05-18T03:10:23.094129+00:00"}