{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:PYBB5VBHWOD6EWPGXPGGN7YBTQ","short_pith_number":"pith:PYBB5VBH","schema_version":"1.0","canonical_sha256":"7e021ed427b387e259e6bbcc66ff019c0bf2ebf8bbd00286abb87cce35d76823","source":{"kind":"arxiv","id":"1905.04732","version":2},"attestation_state":"computed","paper":{"title":"Terahertz-Band Ultra-Massive Spatial Modulation MIMO","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.IT","math.IT"],"primary_cat":"eess.SP","authors_text":"Hadi Sarieddeen, Mohamed-Slim Alouini, Tareq Y. Al-Naffouri","submitted_at":"2019-05-12T15:12:11Z","abstract_excerpt":"The prospect of ultra-massive multiple-input multiple-output (UM-MIMO) technology to combat the distance problem at the Terahertz (THz)-band is considered. It is well-known that the very large available bandwidths at THz frequencies come at the cost of severe propagation losses and power limitations, which result in very short communication distances. Recently, graphene-based plasmonic nano-antenna arrays that can accommodate hundreds of antenna elements in a few millimeters have been proposed. While such arrays enable efficient beamforming that can increase the communication range, they fail "},"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":"1905.04732","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SP","submitted_at":"2019-05-12T15:12:11Z","cross_cats_sorted":["cs.IT","math.IT"],"title_canon_sha256":"f999a2a03ec987bf38dc7077b002bbe6ae219fa4e9ec45b5d0d2712a77b3120b","abstract_canon_sha256":"5ac98b76ba4378e7c371c8f68be5cadcc0457c72a64a20c92dbf4a0865b5fe4a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:40:43.258502Z","signature_b64":"KIlKrJ8TXWQqpegkQ9GvqjkdSbVbsMgvwG/xmKNPg9wOzNBlD8yXESDCa1y5qscCXYfwQanpe9g7joJ3ta3TAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7e021ed427b387e259e6bbcc66ff019c0bf2ebf8bbd00286abb87cce35d76823","last_reissued_at":"2026-05-17T23:40:43.257876Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:40:43.257876Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Terahertz-Band Ultra-Massive Spatial Modulation MIMO","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.IT","math.IT"],"primary_cat":"eess.SP","authors_text":"Hadi Sarieddeen, Mohamed-Slim Alouini, Tareq Y. Al-Naffouri","submitted_at":"2019-05-12T15:12:11Z","abstract_excerpt":"The prospect of ultra-massive multiple-input multiple-output (UM-MIMO) technology to combat the distance problem at the Terahertz (THz)-band is considered. It is well-known that the very large available bandwidths at THz frequencies come at the cost of severe propagation losses and power limitations, which result in very short communication distances. Recently, graphene-based plasmonic nano-antenna arrays that can accommodate hundreds of antenna elements in a few millimeters have been proposed. While such arrays enable efficient beamforming that can increase the communication range, they fail "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.04732","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":"1905.04732","created_at":"2026-05-17T23:40:43.257958+00:00"},{"alias_kind":"arxiv_version","alias_value":"1905.04732v2","created_at":"2026-05-17T23:40:43.257958+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1905.04732","created_at":"2026-05-17T23:40:43.257958+00:00"},{"alias_kind":"pith_short_12","alias_value":"PYBB5VBHWOD6","created_at":"2026-05-18T12:33:24.271573+00:00"},{"alias_kind":"pith_short_16","alias_value":"PYBB5VBHWOD6EWPG","created_at":"2026-05-18T12:33:24.271573+00:00"},{"alias_kind":"pith_short_8","alias_value":"PYBB5VBH","created_at":"2026-05-18T12:33:24.271573+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"1907.05043","citing_title":"Terahertz Band: The Last Piece of RF Spectrum Puzzle for Communication Systems","ref_index":244,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/PYBB5VBHWOD6EWPGXPGGN7YBTQ","json":"https://pith.science/pith/PYBB5VBHWOD6EWPGXPGGN7YBTQ.json","graph_json":"https://pith.science/api/pith-number/PYBB5VBHWOD6EWPGXPGGN7YBTQ/graph.json","events_json":"https://pith.science/api/pith-number/PYBB5VBHWOD6EWPGXPGGN7YBTQ/events.json","paper":"https://pith.science/paper/PYBB5VBH"},"agent_actions":{"view_html":"https://pith.science/pith/PYBB5VBHWOD6EWPGXPGGN7YBTQ","download_json":"https://pith.science/pith/PYBB5VBHWOD6EWPGXPGGN7YBTQ.json","view_paper":"https://pith.science/paper/PYBB5VBH","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1905.04732&json=true","fetch_graph":"https://pith.science/api/pith-number/PYBB5VBHWOD6EWPGXPGGN7YBTQ/graph.json","fetch_events":"https://pith.science/api/pith-number/PYBB5VBHWOD6EWPGXPGGN7YBTQ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/PYBB5VBHWOD6EWPGXPGGN7YBTQ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/PYBB5VBHWOD6EWPGXPGGN7YBTQ/action/storage_attestation","attest_author":"https://pith.science/pith/PYBB5VBHWOD6EWPGXPGGN7YBTQ/action/author_attestation","sign_citation":"https://pith.science/pith/PYBB5VBHWOD6EWPGXPGGN7YBTQ/action/citation_signature","submit_replication":"https://pith.science/pith/PYBB5VBHWOD6EWPGXPGGN7YBTQ/action/replication_record"}},"created_at":"2026-05-17T23:40:43.257958+00:00","updated_at":"2026-05-17T23:40:43.257958+00:00"}