{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2017:CGMZ7EKTIKBRVHOKUKSI7KJG67","short_pith_number":"pith:CGMZ7EKT","schema_version":"1.0","canonical_sha256":"11999f915342831a9dcaa2a48fa926f7d7515bd7d7584b1c6dd3e9c2004411ff","source":{"kind":"arxiv","id":"1712.01249","version":1},"attestation_state":"computed","paper":{"title":"On Out-of-Band Emissions of Quantized Precoding in Massive MU-MIMO-OFDM","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Christoph Studer, Giuseppe Durisi, Mikael Coldrey, Sven Jacobsson","submitted_at":"2017-12-04T18:44:10Z","abstract_excerpt":"We analyze out-of-band (OOB) emissions in the massive multi-user (MU) multiple-input multiple-output (MIMO) downlink. We focus on systems in which the base station (BS) is equipped with low-resolution digital-to-analog converters (DACs) and orthogonal frequency-division multiplexing (OFDM) is used to communicate to the user equipments (UEs) over frequency-selective channels. We demonstrate that analog filtering in combination with simple frequency-domain digital predistortion (DPD) at the BS enables a significant reduction of OOB emissions, but degrades the signal-to-interference-noise-and-dis"},"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":"1712.01249","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2017-12-04T18:44:10Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"8960e00684c4c9d1c275b19f02672ebf2be775b9887c042bda5d0b4e275ebff1","abstract_canon_sha256":"257819592f2d51c70020d990969ed9d210c19e8cd7a5fa22732f500c26aa4a23"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:28:57.561795Z","signature_b64":"73w55OmfF8H95lok4B8KHYFEkVDva8MmeP+q3Ls9p9h5lQ2V4grBwHtePR4WLUibZiZYR2loLRrb4BxH3vRWDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"11999f915342831a9dcaa2a48fa926f7d7515bd7d7584b1c6dd3e9c2004411ff","last_reissued_at":"2026-05-18T00:28:57.561347Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:28:57.561347Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"On Out-of-Band Emissions of Quantized Precoding in Massive MU-MIMO-OFDM","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Christoph Studer, Giuseppe Durisi, Mikael Coldrey, Sven Jacobsson","submitted_at":"2017-12-04T18:44:10Z","abstract_excerpt":"We analyze out-of-band (OOB) emissions in the massive multi-user (MU) multiple-input multiple-output (MIMO) downlink. We focus on systems in which the base station (BS) is equipped with low-resolution digital-to-analog converters (DACs) and orthogonal frequency-division multiplexing (OFDM) is used to communicate to the user equipments (UEs) over frequency-selective channels. We demonstrate that analog filtering in combination with simple frequency-domain digital predistortion (DPD) at the BS enables a significant reduction of OOB emissions, but degrades the signal-to-interference-noise-and-dis"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.01249","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":"1712.01249","created_at":"2026-05-18T00:28:57.561419+00:00"},{"alias_kind":"arxiv_version","alias_value":"1712.01249v1","created_at":"2026-05-18T00:28:57.561419+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.01249","created_at":"2026-05-18T00:28:57.561419+00:00"},{"alias_kind":"pith_short_12","alias_value":"CGMZ7EKTIKBR","created_at":"2026-05-18T12:31:10.602751+00:00"},{"alias_kind":"pith_short_16","alias_value":"CGMZ7EKTIKBRVHOK","created_at":"2026-05-18T12:31:10.602751+00:00"},{"alias_kind":"pith_short_8","alias_value":"CGMZ7EKT","created_at":"2026-05-18T12:31:10.602751+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/CGMZ7EKTIKBRVHOKUKSI7KJG67","json":"https://pith.science/pith/CGMZ7EKTIKBRVHOKUKSI7KJG67.json","graph_json":"https://pith.science/api/pith-number/CGMZ7EKTIKBRVHOKUKSI7KJG67/graph.json","events_json":"https://pith.science/api/pith-number/CGMZ7EKTIKBRVHOKUKSI7KJG67/events.json","paper":"https://pith.science/paper/CGMZ7EKT"},"agent_actions":{"view_html":"https://pith.science/pith/CGMZ7EKTIKBRVHOKUKSI7KJG67","download_json":"https://pith.science/pith/CGMZ7EKTIKBRVHOKUKSI7KJG67.json","view_paper":"https://pith.science/paper/CGMZ7EKT","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1712.01249&json=true","fetch_graph":"https://pith.science/api/pith-number/CGMZ7EKTIKBRVHOKUKSI7KJG67/graph.json","fetch_events":"https://pith.science/api/pith-number/CGMZ7EKTIKBRVHOKUKSI7KJG67/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/CGMZ7EKTIKBRVHOKUKSI7KJG67/action/timestamp_anchor","attest_storage":"https://pith.science/pith/CGMZ7EKTIKBRVHOKUKSI7KJG67/action/storage_attestation","attest_author":"https://pith.science/pith/CGMZ7EKTIKBRVHOKUKSI7KJG67/action/author_attestation","sign_citation":"https://pith.science/pith/CGMZ7EKTIKBRVHOKUKSI7KJG67/action/citation_signature","submit_replication":"https://pith.science/pith/CGMZ7EKTIKBRVHOKUKSI7KJG67/action/replication_record"}},"created_at":"2026-05-18T00:28:57.561419+00:00","updated_at":"2026-05-18T00:28:57.561419+00:00"}