{"id":"https://openalex.org/W4388145575","doi":"https://doi.org/10.1109/lwc.2023.3329019","title":"Transformer-Based Efficient CSI Feedback for THz Band FDD MIMO Systems","display_name":"Transformer-Based Efficient CSI Feedback for THz Band FDD MIMO Systems","publication_year":2023,"publication_date":"2023-11-01","ids":{"openalex":"https://openalex.org/W4388145575","doi":"https://doi.org/10.1109/lwc.2023.3329019"},"language":"en","primary_location":{"id":"doi:10.1109/lwc.2023.3329019","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lwc.2023.3329019","pdf_url":null,"source":{"id":"https://openalex.org/S2500830676","display_name":"IEEE Wireless Communications Letters","issn_l":"2162-2337","issn":["2162-2337","2162-2345"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Wireless Communications Letters","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5075837710","display_name":"Dong Jin Ji","orcid":"https://orcid.org/0000-0002-2093-6469"},"institutions":[{"id":"https://openalex.org/I118373667","display_name":"Seoul National University of Science and Technology","ror":"https://ror.org/00chfja07","country_code":"KR","type":"education","lineage":["https://openalex.org/I118373667"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Dong Jin Ji","raw_affiliation_strings":["Department of Semiconductor Engineering, Seoul National University of Science and Technology, Seoul, Republic of Korea"],"raw_orcid":"https://orcid.org/0000-0002-2093-6469","affiliations":[{"raw_affiliation_string":"Department of Semiconductor Engineering, Seoul National University of Science and Technology, Seoul, Republic of Korea","institution_ids":["https://openalex.org/I118373667"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5068757776","display_name":"Byung Chang Chung","orcid":"https://orcid.org/0000-0002-5543-6157"},"institutions":[{"id":"https://openalex.org/I189442560","display_name":"Gyeongsang National University","ror":"https://ror.org/00saywf64","country_code":"KR","type":"education","lineage":["https://openalex.org/I189442560"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Byung Chang Chung","raw_affiliation_strings":["Department of Intelligence and Communication Engineering, Gyeongsang National University, Tongyeong, Republic of Korea"],"raw_orcid":"https://orcid.org/0000-0002-5543-6157","affiliations":[{"raw_affiliation_string":"Department of Intelligence and Communication Engineering, Gyeongsang National University, Tongyeong, Republic of Korea","institution_ids":["https://openalex.org/I189442560"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.0453,"has_fulltext":false,"cited_by_count":9,"citation_normalized_percentile":{"value":0.76746245,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":94,"max":99},"biblio":{"volume":"13","issue":"2","first_page":"343","last_page":"346"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10187","display_name":"Radio Frequency Integrated Circuit Design","score":0.9994000196456909,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10187","display_name":"Radio Frequency Integrated Circuit Design","score":0.9994000196456909,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10936","display_name":"Millimeter-Wave Propagation and Modeling","score":0.9986000061035156,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10148","display_name":"Advanced MIMO Systems Optimization","score":0.9983999729156494,"subfield":{"id":"https://openalex.org/subfields/2208","display_name":"Electrical and Electronic Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.7049393057823181},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6144181489944458},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.5802684426307678},{"id":"https://openalex.org/keywords/terahertz-radiation","display_name":"Terahertz radiation","score":0.42136719822883606},{"id":"https://openalex.org/keywords/electrical-engineering","display_name":"Electrical engineering","score":0.34814804792404175},{"id":"https://openalex.org/keywords/optoelectronics","display_name":"Optoelectronics","score":0.2544214129447937},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.2204442024230957},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.17891806364059448},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.17330074310302734}],"concepts":[{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.7049393057823181},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6144181489944458},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.5802684426307678},{"id":"https://openalex.org/C107816215","wikidata":"https://www.wikidata.org/wiki/Q647887","display_name":"Terahertz radiation","level":2,"score":0.42136719822883606},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.34814804792404175},{"id":"https://openalex.org/C49040817","wikidata":"https://www.wikidata.org/wiki/Q193091","display_name":"Optoelectronics","level":1,"score":0.2544214129447937},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.2204442024230957},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.17891806364059448},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.17330074310302734},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/lwc.2023.3329019","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lwc.2023.3329019","pdf_url":null,"source":{"id":"https://openalex.org/S2500830676","display_name":"IEEE Wireless Communications Letters","issn_l":"2162-2337","issn":["2162-2337","2162-2345"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Wireless Communications Letters","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320321294","display_name":"Seoul National University of Science and Technology","ror":"https://ror.org/00chfja07"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":15,"referenced_works":["https://openalex.org/W2060661941","https://openalex.org/W2901240584","https://openalex.org/W2963145597","https://openalex.org/W3128815933","https://openalex.org/W3210651618","https://openalex.org/W4295922517","https://openalex.org/W4312050602","https://openalex.org/W4312667604","https://openalex.org/W4323338218","https://openalex.org/W4386242147","https://openalex.org/W6757817989","https://openalex.org/W6759127422","https://openalex.org/W6790690058","https://openalex.org/W6795140394","https://openalex.org/W6803084211"],"related_works":["https://openalex.org/W4391375266","https://openalex.org/W2899084033","https://openalex.org/W2748952813","https://openalex.org/W2033952283","https://openalex.org/W2762687161","https://openalex.org/W2353254830","https://openalex.org/W2890072373","https://openalex.org/W2351210568","https://openalex.org/W2028421553","https://openalex.org/W4229079866"],"abstract_inverted_index":{"Machine":[0],"learning":[1],"algorithms":[2],"have":[3],"been":[4],"extensively":[5],"explored":[6],"for":[7],"the":[8,36,72],"feedback":[9,51,95],"of":[10,84],"multiple-input":[11],"multiple-output":[12],"(MIMO)":[13],"channel":[14],"state":[15],"information":[16],"(CSI)":[17],"in":[18,28,35,71,82],"orthogonal":[19],"frequency":[20],"division":[21],"multiplexing":[22],"(OFDM)":[23],"systems.":[24],"However,":[25],"their":[26],"viability":[27],"sixth-generation":[29],"(6G)":[30],"wireless":[31],"communication":[32],"systems,":[33],"operating":[34],"terahertz":[37],"(THz)":[38],"band,":[39],"remains":[40],"uncertain.":[41],"To":[42],"address":[43],"this,":[44],"we":[45],"propose":[46],"ChannelTransformer,":[47],"a":[48,58,63,102],"transformer-model-based":[49],"CSI":[50],"scheme":[52],"that":[53],"incorporates":[54],"multi-head":[55],"self-attention":[56],"and":[57,62,90],"CSI-feedback-aware":[59],"transformer":[60],"structure,":[61],"lightweight":[64],"user":[65],"equipment":[66],"(UE)":[67],"model.":[68],"Through":[69],"simulations":[70],"DeepMIMO":[73],"O1":[74],"scenario":[75],"at":[76],"140GHz,":[77],"ChannelTransformer":[78],"demonstrates":[79],"superior":[80],"performance":[81],"terms":[83],"normalized":[85],"mean":[86],"square":[87],"error":[88],"(NMSE)":[89],"cosine":[91],"similarity":[92],"across":[93],"various":[94],"lengths":[96],"compared":[97],"to":[98],"conventional":[99],"schemes":[100],"with":[101],"much":[103],"smaller":[104],"UE":[105],"model":[106],"size.":[107]},"counts_by_year":[{"year":2026,"cited_by_count":4},{"year":2025,"cited_by_count":3},{"year":2024,"cited_by_count":2}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
