{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:UJBGBOQPNFUKA64DJS556IHNIZ","short_pith_number":"pith:UJBGBOQP","schema_version":"1.0","canonical_sha256":"a24260ba0f6968a07b834cbbdf20ed467df3c9309d19ca005870798ee84f1844","source":{"kind":"arxiv","id":"1605.06677","version":2},"attestation_state":"computed","paper":{"title":"Detection of Spatially-Modulated Signals in Doubly Selective Fading Channels With Imperfect CSI","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Hsuan-Cheng Chang, Yen-Cheng Liu, Yu T. Su","submitted_at":"2016-05-21T17:28:36Z","abstract_excerpt":"To detect spatially-modulated signals, a receiver needs the channel state information (CSI) of each transmit- receive antenna pair. Although the CSI is never perfect and varies in time, most studies on spatial modulation (SM) systems assume perfectly known CSI and time-invariant channel. The spatial correlations among multiple spatial subchannels, which have to be considered when CSI is imperfect, are also often neglected. In this paper, we release the above assumptions and take the CSI uncertainty along with the spatial-temporal selectivities into account. We derive the channel estimation err"},"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":"1605.06677","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.IT","submitted_at":"2016-05-21T17:28:36Z","cross_cats_sorted":["math.IT"],"title_canon_sha256":"0b84b7f3fcfa86853ecf51347bc17adf87750fdd73d1148c560ed584824e125d","abstract_canon_sha256":"c57e37522f4b7087b9b9f09597e96ede45d5c7ce402f303f935e4a94244cd821"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:44:38.944802Z","signature_b64":"ueG/gvKg/cF77G9X9VqKP0tVh1LR7AxTdedaMRrdiLOzXukx8bOITNfHlbW/XGKVAeLSwIGmV2yME+pv/SPpCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a24260ba0f6968a07b834cbbdf20ed467df3c9309d19ca005870798ee84f1844","last_reissued_at":"2026-05-18T00:44:38.944298Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:44:38.944298Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Detection of Spatially-Modulated Signals in Doubly Selective Fading Channels With Imperfect CSI","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.IT"],"primary_cat":"cs.IT","authors_text":"Hsuan-Cheng Chang, Yen-Cheng Liu, Yu T. Su","submitted_at":"2016-05-21T17:28:36Z","abstract_excerpt":"To detect spatially-modulated signals, a receiver needs the channel state information (CSI) of each transmit- receive antenna pair. Although the CSI is never perfect and varies in time, most studies on spatial modulation (SM) systems assume perfectly known CSI and time-invariant channel. The spatial correlations among multiple spatial subchannels, which have to be considered when CSI is imperfect, are also often neglected. In this paper, we release the above assumptions and take the CSI uncertainty along with the spatial-temporal selectivities into account. We derive the channel estimation err"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1605.06677","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":"1605.06677","created_at":"2026-05-18T00:44:38.944415+00:00"},{"alias_kind":"arxiv_version","alias_value":"1605.06677v2","created_at":"2026-05-18T00:44:38.944415+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1605.06677","created_at":"2026-05-18T00:44:38.944415+00:00"},{"alias_kind":"pith_short_12","alias_value":"UJBGBOQPNFUK","created_at":"2026-05-18T12:30:46.583412+00:00"},{"alias_kind":"pith_short_16","alias_value":"UJBGBOQPNFUKA64D","created_at":"2026-05-18T12:30:46.583412+00:00"},{"alias_kind":"pith_short_8","alias_value":"UJBGBOQP","created_at":"2026-05-18T12:30:46.583412+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/UJBGBOQPNFUKA64DJS556IHNIZ","json":"https://pith.science/pith/UJBGBOQPNFUKA64DJS556IHNIZ.json","graph_json":"https://pith.science/api/pith-number/UJBGBOQPNFUKA64DJS556IHNIZ/graph.json","events_json":"https://pith.science/api/pith-number/UJBGBOQPNFUKA64DJS556IHNIZ/events.json","paper":"https://pith.science/paper/UJBGBOQP"},"agent_actions":{"view_html":"https://pith.science/pith/UJBGBOQPNFUKA64DJS556IHNIZ","download_json":"https://pith.science/pith/UJBGBOQPNFUKA64DJS556IHNIZ.json","view_paper":"https://pith.science/paper/UJBGBOQP","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1605.06677&json=true","fetch_graph":"https://pith.science/api/pith-number/UJBGBOQPNFUKA64DJS556IHNIZ/graph.json","fetch_events":"https://pith.science/api/pith-number/UJBGBOQPNFUKA64DJS556IHNIZ/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/UJBGBOQPNFUKA64DJS556IHNIZ/action/timestamp_anchor","attest_storage":"https://pith.science/pith/UJBGBOQPNFUKA64DJS556IHNIZ/action/storage_attestation","attest_author":"https://pith.science/pith/UJBGBOQPNFUKA64DJS556IHNIZ/action/author_attestation","sign_citation":"https://pith.science/pith/UJBGBOQPNFUKA64DJS556IHNIZ/action/citation_signature","submit_replication":"https://pith.science/pith/UJBGBOQPNFUKA64DJS556IHNIZ/action/replication_record"}},"created_at":"2026-05-18T00:44:38.944415+00:00","updated_at":"2026-05-18T00:44:38.944415+00:00"}