{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:T2HFM2DWZ6SZS7R3H5E2SGF6NN","short_pith_number":"pith:T2HFM2DW","schema_version":"1.0","canonical_sha256":"9e8e566876cfa5997e3b3f49a918be6b650ad2c44551a5da71ddbb3c7b651d70","source":{"kind":"arxiv","id":"1711.03477","version":2},"attestation_state":"computed","paper":{"title":"Achievable Rates and Training Overheads for a Measured LOS Massive MIMO Channel","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Fredrik Tufvesson, Liang Liu, Mark Beach, Ove Edfors, Paul Harris, Simon Armour, Steffen Malkowsky, Wael Boukley Hasan","submitted_at":"2017-11-09T17:18:50Z","abstract_excerpt":"This paper presents achievable uplink (UL) sumrate predictions for a measured line-of-sight (LOS) massive multiple-input, multiple-output (MIMO) (MMIMO) scenario and illustrates the trade-off between spatial multiplexing performance and channel de-coherence rate for an increasing number of base station (BS) antennas. In addition, an orthogonal frequency division multiplexing (OFDM) case study is formed which considers the 90% coherence time to evaluate the impact of MMIMO channel training overheads in high-speed LOS scenarios. It is shown that whilst 25% of the achievable zero-forcing (ZF) sum"},"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":"1711.03477","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-11-09T17:18:50Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"632d10966659d7a2e136d738b0c29eb7729c05cc75b9b4078964b7ac2a760f73","abstract_canon_sha256":"f8f9147d9223a89476d577c55c1d1f2aeab30d4ebedb933a4a83a4539898808b"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:22:49.149249Z","signature_b64":"KZVOJjZAIxloBiCu7lOdvIQt5Qf0dkjoVsIpjn54fiaLaVuDMrNJjiHnH8xMWaZy+BZWj0/c4/sOvr/eUnOyCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9e8e566876cfa5997e3b3f49a918be6b650ad2c44551a5da71ddbb3c7b651d70","last_reissued_at":"2026-05-18T00:22:49.148563Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:22:49.148563Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Achievable Rates and Training Overheads for a Measured LOS Massive MIMO Channel","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Fredrik Tufvesson, Liang Liu, Mark Beach, Ove Edfors, Paul Harris, Simon Armour, Steffen Malkowsky, Wael Boukley Hasan","submitted_at":"2017-11-09T17:18:50Z","abstract_excerpt":"This paper presents achievable uplink (UL) sumrate predictions for a measured line-of-sight (LOS) massive multiple-input, multiple-output (MIMO) (MMIMO) scenario and illustrates the trade-off between spatial multiplexing performance and channel de-coherence rate for an increasing number of base station (BS) antennas. In addition, an orthogonal frequency division multiplexing (OFDM) case study is formed which considers the 90% coherence time to evaluate the impact of MMIMO channel training overheads in high-speed LOS scenarios. It is shown that whilst 25% of the achievable zero-forcing (ZF) sum"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1711.03477","kind":"arxiv","version":2},"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":"1711.03477","created_at":"2026-05-18T00:22:49.148693+00:00"},{"alias_kind":"arxiv_version","alias_value":"1711.03477v2","created_at":"2026-05-18T00:22:49.148693+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1711.03477","created_at":"2026-05-18T00:22:49.148693+00:00"},{"alias_kind":"pith_short_12","alias_value":"T2HFM2DWZ6SZ","created_at":"2026-05-18T12:31:43.269735+00:00"},{"alias_kind":"pith_short_16","alias_value":"T2HFM2DWZ6SZS7R3","created_at":"2026-05-18T12:31:43.269735+00:00"},{"alias_kind":"pith_short_8","alias_value":"T2HFM2DW","created_at":"2026-05-18T12:31:43.269735+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/T2HFM2DWZ6SZS7R3H5E2SGF6NN","json":"https://pith.science/pith/T2HFM2DWZ6SZS7R3H5E2SGF6NN.json","graph_json":"https://pith.science/api/pith-number/T2HFM2DWZ6SZS7R3H5E2SGF6NN/graph.json","events_json":"https://pith.science/api/pith-number/T2HFM2DWZ6SZS7R3H5E2SGF6NN/events.json","paper":"https://pith.science/paper/T2HFM2DW"},"agent_actions":{"view_html":"https://pith.science/pith/T2HFM2DWZ6SZS7R3H5E2SGF6NN","download_json":"https://pith.science/pith/T2HFM2DWZ6SZS7R3H5E2SGF6NN.json","view_paper":"https://pith.science/paper/T2HFM2DW","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1711.03477&json=true","fetch_graph":"https://pith.science/api/pith-number/T2HFM2DWZ6SZS7R3H5E2SGF6NN/graph.json","fetch_events":"https://pith.science/api/pith-number/T2HFM2DWZ6SZS7R3H5E2SGF6NN/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/T2HFM2DWZ6SZS7R3H5E2SGF6NN/action/timestamp_anchor","attest_storage":"https://pith.science/pith/T2HFM2DWZ6SZS7R3H5E2SGF6NN/action/storage_attestation","attest_author":"https://pith.science/pith/T2HFM2DWZ6SZS7R3H5E2SGF6NN/action/author_attestation","sign_citation":"https://pith.science/pith/T2HFM2DWZ6SZS7R3H5E2SGF6NN/action/citation_signature","submit_replication":"https://pith.science/pith/T2HFM2DWZ6SZS7R3H5E2SGF6NN/action/replication_record"}},"created_at":"2026-05-18T00:22:49.148693+00:00","updated_at":"2026-05-18T00:22:49.148693+00:00"}