{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:ISYJPQHXWDNZ6PJ74UKLNRCYTH","short_pith_number":"pith:ISYJPQHX","schema_version":"1.0","canonical_sha256":"44b097c0f7b0db9f3d3fe514b6c45899f6c2e5213309fb00c6bfe18b363a96b1","source":{"kind":"arxiv","id":"1404.2352","version":1},"attestation_state":"computed","paper":{"title":"Low-complexity Decoding is Asymptotically Optimal in the SIMO MAC","license":"http://creativecommons.org/licenses/by/3.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Andrea Goldsmith, Mainak Chowdhury","submitted_at":"2014-04-09T02:06:02Z","abstract_excerpt":"A single input multiple output (SIMO) multiple access channel, with a large number of transmitters sending symbols from a constellation to the receiver of a multi-antenna base station, is considered. The fundamental limits of joint decoding of the signals from all the users using a low complexity convex relaxation of the maximum likelihood decoder (ML, constellation search) is investigated. It has been shown that in a rich scattering environment, and in the asymptotic limit of a large number of transmitters, reliable communication is possible even without employing coding at the transmitters. "},"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":"1404.2352","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"cs.IT","submitted_at":"2014-04-09T02:06:02Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"77d6c3bbe9eac4f2832eafb4ea1e0f57d820bb5da55e5e69fc454ccff4e4c514","abstract_canon_sha256":"651dbe5413c619fd4e4cbc858ccd2af4fe383ed754c4208e70e0e607f823f57d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:54:31.752761Z","signature_b64":"qb5Qf4CZ9KWMuj4UNzf/dZA6aAoerj4XoxaXUCeb6xWhJtNWXbbjgUVAafu5vjtJT5AL4ILjztG1uxbFk9f7Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"44b097c0f7b0db9f3d3fe514b6c45899f6c2e5213309fb00c6bfe18b363a96b1","last_reissued_at":"2026-05-18T02:54:31.752151Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:54:31.752151Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Low-complexity Decoding is Asymptotically Optimal in the SIMO MAC","license":"http://creativecommons.org/licenses/by/3.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Andrea Goldsmith, Mainak Chowdhury","submitted_at":"2014-04-09T02:06:02Z","abstract_excerpt":"A single input multiple output (SIMO) multiple access channel, with a large number of transmitters sending symbols from a constellation to the receiver of a multi-antenna base station, is considered. The fundamental limits of joint decoding of the signals from all the users using a low complexity convex relaxation of the maximum likelihood decoder (ML, constellation search) is investigated. It has been shown that in a rich scattering environment, and in the asymptotic limit of a large number of transmitters, reliable communication is possible even without employing coding at the transmitters. "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1404.2352","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":"1404.2352","created_at":"2026-05-18T02:54:31.752248+00:00"},{"alias_kind":"arxiv_version","alias_value":"1404.2352v1","created_at":"2026-05-18T02:54:31.752248+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1404.2352","created_at":"2026-05-18T02:54:31.752248+00:00"},{"alias_kind":"pith_short_12","alias_value":"ISYJPQHXWDNZ","created_at":"2026-05-18T12:28:33.132498+00:00"},{"alias_kind":"pith_short_16","alias_value":"ISYJPQHXWDNZ6PJ7","created_at":"2026-05-18T12:28:33.132498+00:00"},{"alias_kind":"pith_short_8","alias_value":"ISYJPQHX","created_at":"2026-05-18T12:28:33.132498+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/ISYJPQHXWDNZ6PJ74UKLNRCYTH","json":"https://pith.science/pith/ISYJPQHXWDNZ6PJ74UKLNRCYTH.json","graph_json":"https://pith.science/api/pith-number/ISYJPQHXWDNZ6PJ74UKLNRCYTH/graph.json","events_json":"https://pith.science/api/pith-number/ISYJPQHXWDNZ6PJ74UKLNRCYTH/events.json","paper":"https://pith.science/paper/ISYJPQHX"},"agent_actions":{"view_html":"https://pith.science/pith/ISYJPQHXWDNZ6PJ74UKLNRCYTH","download_json":"https://pith.science/pith/ISYJPQHXWDNZ6PJ74UKLNRCYTH.json","view_paper":"https://pith.science/paper/ISYJPQHX","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1404.2352&json=true","fetch_graph":"https://pith.science/api/pith-number/ISYJPQHXWDNZ6PJ74UKLNRCYTH/graph.json","fetch_events":"https://pith.science/api/pith-number/ISYJPQHXWDNZ6PJ74UKLNRCYTH/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ISYJPQHXWDNZ6PJ74UKLNRCYTH/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ISYJPQHXWDNZ6PJ74UKLNRCYTH/action/storage_attestation","attest_author":"https://pith.science/pith/ISYJPQHXWDNZ6PJ74UKLNRCYTH/action/author_attestation","sign_citation":"https://pith.science/pith/ISYJPQHXWDNZ6PJ74UKLNRCYTH/action/citation_signature","submit_replication":"https://pith.science/pith/ISYJPQHXWDNZ6PJ74UKLNRCYTH/action/replication_record"}},"created_at":"2026-05-18T02:54:31.752248+00:00","updated_at":"2026-05-18T02:54:31.752248+00:00"}