{"id":"https://openalex.org/W4400904787","doi":"https://doi.org/10.1109/twc.2024.3428863","title":"Concrete Feedback Layers: Variable-Length, Bit-Level CSI Feedback Optimization for FDD Wireless Communication Systems","display_name":"Concrete Feedback Layers: Variable-Length, Bit-Level CSI Feedback Optimization for FDD Wireless Communication Systems","publication_year":2024,"publication_date":"2024-07-23","ids":{"openalex":"https://openalex.org/W4400904787","doi":"https://doi.org/10.1109/twc.2024.3428863"},"language":"en","primary_location":{"id":"doi:10.1109/twc.2024.3428863","is_oa":false,"landing_page_url":"https://doi.org/10.1109/twc.2024.3428863","pdf_url":null,"source":{"id":"https://openalex.org/S63459445","display_name":"IEEE Transactions on Wireless Communications","issn_l":"1536-1276","issn":["1536-1276","1558-2248"],"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 Transactions on Wireless Communications","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":0.4548,"has_fulltext":false,"cited_by_count":3,"citation_normalized_percentile":{"value":0.5783313,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":94,"max":97},"biblio":{"volume":"23","issue":"10","first_page":"15353","last_page":"15366"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10323","display_name":"Analog and Mixed-Signal Circuit Design","score":0.9878000020980835,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical 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/T10323","display_name":"Analog and Mixed-Signal Circuit Design","score":0.9878000020980835,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical 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/T11233","display_name":"Advanced Adaptive Filtering Techniques","score":0.9733999967575073,"subfield":{"id":"https://openalex.org/subfields/2206","display_name":"Computational Mechanics"},"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/T10901","display_name":"Advanced Data Compression Techniques","score":0.9724000096321106,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6969987750053406},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.6288882493972778},{"id":"https://openalex.org/keywords/bit","display_name":"Bit (key)","score":0.5297546982765198},{"id":"https://openalex.org/keywords/variable","display_name":"Variable (mathematics)","score":0.4732946753501892},{"id":"https://openalex.org/keywords/communications-system","display_name":"Communications system","score":0.42459627985954285},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.3844040334224701},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.3710783123970032},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.34908556938171387},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.1683797836303711},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.1217881441116333}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6969987750053406},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.6288882493972778},{"id":"https://openalex.org/C117011727","wikidata":"https://www.wikidata.org/wiki/Q1278488","display_name":"Bit (key)","level":2,"score":0.5297546982765198},{"id":"https://openalex.org/C182365436","wikidata":"https://www.wikidata.org/wiki/Q50701","display_name":"Variable (mathematics)","level":2,"score":0.4732946753501892},{"id":"https://openalex.org/C101765175","wikidata":"https://www.wikidata.org/wiki/Q577764","display_name":"Communications system","level":2,"score":0.42459627985954285},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.3844040334224701},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.3710783123970032},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.34908556938171387},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.1683797836303711},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.1217881441116333},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/twc.2024.3428863","is_oa":false,"landing_page_url":"https://doi.org/10.1109/twc.2024.3428863","pdf_url":null,"source":{"id":"https://openalex.org/S63459445","display_name":"IEEE Transactions on Wireless Communications","issn_l":"1536-1276","issn":["1536-1276","1558-2248"],"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 Transactions on Wireless Communications","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320322120","display_name":"National Research Foundation of Korea","ror":"https://ror.org/013aysd81"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":23,"referenced_works":["https://openalex.org/W2042970394","https://openalex.org/W2099721949","https://openalex.org/W2120549790","https://openalex.org/W2889482795","https://openalex.org/W2956205027","https://openalex.org/W2963145597","https://openalex.org/W2964005248","https://openalex.org/W2973921813","https://openalex.org/W3003580643","https://openalex.org/W3003689553","https://openalex.org/W3024777099","https://openalex.org/W3096330798","https://openalex.org/W3112756300","https://openalex.org/W3128815933","https://openalex.org/W3210651618","https://openalex.org/W4221143069","https://openalex.org/W4312050602","https://openalex.org/W4312667604","https://openalex.org/W4323338218","https://openalex.org/W4379116692","https://openalex.org/W4385245566","https://openalex.org/W4386242147","https://openalex.org/W4388145575"],"related_works":["https://openalex.org/W2411923897","https://openalex.org/W4394546135","https://openalex.org/W4285347720","https://openalex.org/W4200259850","https://openalex.org/W2333831899","https://openalex.org/W2484894494","https://openalex.org/W2367385042","https://openalex.org/W2912284747","https://openalex.org/W2372426168","https://openalex.org/W2375193409"],"abstract_inverted_index":{"In":[0],"this":[1],"work,":[2],"we":[3],"present":[4],"the":[5,26,39,79,82,87],"innovative":[6],"Concrete":[7,83],"Feedback":[8,84,88],"Layers,":[9],"designed":[10],"to":[11,42,74],"enable":[12],"genuine":[13],"bit-level,":[14],"end-to-end":[15],"Channel":[16],"State":[17],"Information":[18],"(CSI)":[19],"feedback":[20,76,108,121],"using":[21],"deep":[22,118],"learning":[23,45],"techniques.":[24],"Overcoming":[25],"limitations":[27],"of":[28,64,81],"traditional":[29],"discrete":[30],"operations":[31],"that":[32,51],"impede":[33],"gradient":[34],"flow,":[35],"these":[36,52],"layers":[37,53],"leverage":[38],"concrete":[40],"distribution":[41],"facilitate":[43],"efficient":[44],"processes.":[46],"Our":[47],"extensive":[48],"simulations":[49],"reveal":[50],"significantly":[54],"enhance":[55],"digital":[56],"CSI":[57,98,120],"feedback,":[58,99],"achieving":[59],"superior":[60],"performance":[61],"in":[62,117],"terms":[63],"Normalized":[65],"Mean":[66],"Squared":[67],"Error":[68],"(NMSE)":[69],"and":[70,131],"cosine":[71],"similarity":[72],"compared":[73],"conventional":[75],"models.":[77],"Furthermore,":[78],"integration":[80],"Layers":[85],"with":[86,128],"Bit":[89],"Masking":[90],"Unit":[91],"(FBMU)":[92],"allows":[93],"for":[94,106],"authentic":[95],"bit-level":[96],"variable-length":[97],"while":[100],"maintaining":[101],"a":[102,113],"single":[103],"adaptable":[104],"model":[105],"various":[107],"lengths.":[109],"This":[110],"advancement":[111],"marks":[112],"major":[114],"leap":[115],"forward":[116],"learning-based":[119],"methods,":[122],"potentially":[123],"revolutionizing":[124],"6G":[125],"communication":[126],"systems":[127],"its":[129],"flexibility":[130],"efficiency.":[132]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":2}],"updated_date":"2025-12-26T23:08:49.675405","created_date":"2025-10-10T00:00:00"}
