{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2024:VSTBT3WIDPQVQAHGO5IL3F2N2F","short_pith_number":"pith:VSTBT3WI","schema_version":"1.0","canonical_sha256":"aca619eec81be15800e67750bd974dd1674e8a4d3b68b188a859f5e309eef6aa","source":{"kind":"arxiv","id":"2408.08621","version":1},"attestation_state":"computed","paper":{"title":"Optimal Linear Precoding Under Realistic Satellite Communications Scenarios","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"Alireza Haqiqtnejad, Eva Lagunas, Geoffrey Eappen, Jevgenij Krivochiza, Jorge Luis Gonzalez, Jorge Querol, Juan Carlos Merlano Duncan, Liz Martinez Marrero, Nicola Maturo, Rakesh Palisetty, Stefano Andrenacci, Symeon Chatzinotas, Vibhum Singh","submitted_at":"2024-08-16T09:23:53Z","abstract_excerpt":"In this paper, optimal linear precoding for the multibeam geostationary earth orbit (GEO) satellite with the multi-user (MU) multiple-input-multiple-output (MIMO) downlink scenario is addressed. Multiple-user interference is one of the major issues faced by the satellites serving the multiple users operating at the common time-frequency resource block in the downlink channel. To mitigate this issue, the optimal linear precoders are implemented at the gateways (GWs). The precoding computation is performed by utilizing the channel state information obtained at user terminals (UTs). The optimal l"},"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":"2408.08621","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"eess.SP","submitted_at":"2024-08-16T09:23:53Z","cross_cats_sorted":[],"title_canon_sha256":"cf87bb122b29474ddd2031e6bcbcc2bef0bb5e843113fce420e63b33a5daf784","abstract_canon_sha256":"796d9a30ba17007d62c142417b04c54713a6891e64e682461d7ccfef77f823ea"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:56:06.783768Z","signature_b64":"dskEBjPQd9OURYW3Bmg4fyvkxCu/jaKjhASN1qtw/mguuD+Eu5Atl7/4l/JGLH9TbGQ1sKz6lNF3I+igFrmJDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"aca619eec81be15800e67750bd974dd1674e8a4d3b68b188a859f5e309eef6aa","last_reissued_at":"2026-07-05T08:56:06.783308Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:56:06.783308Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Optimal Linear Precoding Under Realistic Satellite Communications Scenarios","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"eess.SP","authors_text":"Alireza Haqiqtnejad, Eva Lagunas, Geoffrey Eappen, Jevgenij Krivochiza, Jorge Luis Gonzalez, Jorge Querol, Juan Carlos Merlano Duncan, Liz Martinez Marrero, Nicola Maturo, Rakesh Palisetty, Stefano Andrenacci, Symeon Chatzinotas, Vibhum Singh","submitted_at":"2024-08-16T09:23:53Z","abstract_excerpt":"In this paper, optimal linear precoding for the multibeam geostationary earth orbit (GEO) satellite with the multi-user (MU) multiple-input-multiple-output (MIMO) downlink scenario is addressed. Multiple-user interference is one of the major issues faced by the satellites serving the multiple users operating at the common time-frequency resource block in the downlink channel. To mitigate this issue, the optimal linear precoders are implemented at the gateways (GWs). The precoding computation is performed by utilizing the channel state information obtained at user terminals (UTs). The optimal l"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2408.08621","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2408.08621/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2408.08621","created_at":"2026-07-05T08:56:06.783382+00:00"},{"alias_kind":"arxiv_version","alias_value":"2408.08621v1","created_at":"2026-07-05T08:56:06.783382+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2408.08621","created_at":"2026-07-05T08:56:06.783382+00:00"},{"alias_kind":"pith_short_12","alias_value":"VSTBT3WIDPQV","created_at":"2026-07-05T08:56:06.783382+00:00"},{"alias_kind":"pith_short_16","alias_value":"VSTBT3WIDPQVQAHG","created_at":"2026-07-05T08:56:06.783382+00:00"},{"alias_kind":"pith_short_8","alias_value":"VSTBT3WI","created_at":"2026-07-05T08:56:06.783382+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/VSTBT3WIDPQVQAHGO5IL3F2N2F","json":"https://pith.science/pith/VSTBT3WIDPQVQAHGO5IL3F2N2F.json","graph_json":"https://pith.science/api/pith-number/VSTBT3WIDPQVQAHGO5IL3F2N2F/graph.json","events_json":"https://pith.science/api/pith-number/VSTBT3WIDPQVQAHGO5IL3F2N2F/events.json","paper":"https://pith.science/paper/VSTBT3WI"},"agent_actions":{"view_html":"https://pith.science/pith/VSTBT3WIDPQVQAHGO5IL3F2N2F","download_json":"https://pith.science/pith/VSTBT3WIDPQVQAHGO5IL3F2N2F.json","view_paper":"https://pith.science/paper/VSTBT3WI","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2408.08621&json=true","fetch_graph":"https://pith.science/api/pith-number/VSTBT3WIDPQVQAHGO5IL3F2N2F/graph.json","fetch_events":"https://pith.science/api/pith-number/VSTBT3WIDPQVQAHGO5IL3F2N2F/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/VSTBT3WIDPQVQAHGO5IL3F2N2F/action/timestamp_anchor","attest_storage":"https://pith.science/pith/VSTBT3WIDPQVQAHGO5IL3F2N2F/action/storage_attestation","attest_author":"https://pith.science/pith/VSTBT3WIDPQVQAHGO5IL3F2N2F/action/author_attestation","sign_citation":"https://pith.science/pith/VSTBT3WIDPQVQAHGO5IL3F2N2F/action/citation_signature","submit_replication":"https://pith.science/pith/VSTBT3WIDPQVQAHGO5IL3F2N2F/action/replication_record"}},"created_at":"2026-07-05T08:56:06.783382+00:00","updated_at":"2026-07-05T08:56:06.783382+00:00"}