{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:CFV5XPFQGAEW7NK7EZL4IHLQON","short_pith_number":"pith:CFV5XPFQ","schema_version":"1.0","canonical_sha256":"116bdbbcb030096fb55f2657c41d70735769af3b04138a421b7644816e659620","source":{"kind":"arxiv","id":"1809.07805","version":1},"attestation_state":"computed","paper":{"title":"A Millimeter Wave MIMO Testbed for 5G Communications","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"David Cheadle, Philip Miller, Tian Hong Loh","submitted_at":"2018-09-19T15:47:30Z","abstract_excerpt":"This paper presents a 2 x 2 millimeter wave (mm-wave) multiple-input-multiple-output (MIMO) testbed that operates at around 30 GHz. The link assessment of the system operating at 26.25 GHz was carried out on a test bench, with a short communication distance between the transmitting and receiving antennas. A user-programmable, reconfigurable and real-time signal processing field-programmable gate arrays (FPGAs)-based software defined radio (SDR) system was employed as part of the testbed to validate the system-level performance for a downlink time division long-term evolution (TD-LTE) duplex sc"},"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":"1809.07805","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2018-09-19T15:47:30Z","cross_cats_sorted":[],"title_canon_sha256":"27fda606d369f193ca202237525882e50876a4fbb4620396755b6835f82f32c6","abstract_canon_sha256":"76f61c99bee0e2d695bf2774ffe2c63fa4562ed91506ca2a04fd95e2a63a57bf"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:05:13.236946Z","signature_b64":"bYGSB1MhxKScvZ5tD2kTJ+AdOEglBe/udgMtz7zKgXF/NHc237kJBcRl1Z2KgreiOylQNjDItTLMOrW2RM6nBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"116bdbbcb030096fb55f2657c41d70735769af3b04138a421b7644816e659620","last_reissued_at":"2026-05-18T00:05:13.236336Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:05:13.236336Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A Millimeter Wave MIMO Testbed for 5G Communications","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"David Cheadle, Philip Miller, Tian Hong Loh","submitted_at":"2018-09-19T15:47:30Z","abstract_excerpt":"This paper presents a 2 x 2 millimeter wave (mm-wave) multiple-input-multiple-output (MIMO) testbed that operates at around 30 GHz. The link assessment of the system operating at 26.25 GHz was carried out on a test bench, with a short communication distance between the transmitting and receiving antennas. A user-programmable, reconfigurable and real-time signal processing field-programmable gate arrays (FPGAs)-based software defined radio (SDR) system was employed as part of the testbed to validate the system-level performance for a downlink time division long-term evolution (TD-LTE) duplex sc"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.07805","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":"1809.07805","created_at":"2026-05-18T00:05:13.236414+00:00"},{"alias_kind":"arxiv_version","alias_value":"1809.07805v1","created_at":"2026-05-18T00:05:13.236414+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.07805","created_at":"2026-05-18T00:05:13.236414+00:00"},{"alias_kind":"pith_short_12","alias_value":"CFV5XPFQGAEW","created_at":"2026-05-18T12:32:16.446611+00:00"},{"alias_kind":"pith_short_16","alias_value":"CFV5XPFQGAEW7NK7","created_at":"2026-05-18T12:32:16.446611+00:00"},{"alias_kind":"pith_short_8","alias_value":"CFV5XPFQ","created_at":"2026-05-18T12:32:16.446611+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/CFV5XPFQGAEW7NK7EZL4IHLQON","json":"https://pith.science/pith/CFV5XPFQGAEW7NK7EZL4IHLQON.json","graph_json":"https://pith.science/api/pith-number/CFV5XPFQGAEW7NK7EZL4IHLQON/graph.json","events_json":"https://pith.science/api/pith-number/CFV5XPFQGAEW7NK7EZL4IHLQON/events.json","paper":"https://pith.science/paper/CFV5XPFQ"},"agent_actions":{"view_html":"https://pith.science/pith/CFV5XPFQGAEW7NK7EZL4IHLQON","download_json":"https://pith.science/pith/CFV5XPFQGAEW7NK7EZL4IHLQON.json","view_paper":"https://pith.science/paper/CFV5XPFQ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1809.07805&json=true","fetch_graph":"https://pith.science/api/pith-number/CFV5XPFQGAEW7NK7EZL4IHLQON/graph.json","fetch_events":"https://pith.science/api/pith-number/CFV5XPFQGAEW7NK7EZL4IHLQON/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/CFV5XPFQGAEW7NK7EZL4IHLQON/action/timestamp_anchor","attest_storage":"https://pith.science/pith/CFV5XPFQGAEW7NK7EZL4IHLQON/action/storage_attestation","attest_author":"https://pith.science/pith/CFV5XPFQGAEW7NK7EZL4IHLQON/action/author_attestation","sign_citation":"https://pith.science/pith/CFV5XPFQGAEW7NK7EZL4IHLQON/action/citation_signature","submit_replication":"https://pith.science/pith/CFV5XPFQGAEW7NK7EZL4IHLQON/action/replication_record"}},"created_at":"2026-05-18T00:05:13.236414+00:00","updated_at":"2026-05-18T00:05:13.236414+00:00"}