{"id":"https://openalex.org/W4413978626","doi":"https://doi.org/10.1109/spawc66079.2025.11143298","title":"Ml-Based Codebook-Free CSI Feedback: Feature, Architecture, and Loss Design","display_name":"Ml-Based Codebook-Free CSI Feedback: Feature, Architecture, and Loss Design","publication_year":2025,"publication_date":"2025-07-07","ids":{"openalex":"https://openalex.org/W4413978626","doi":"https://doi.org/10.1109/spawc66079.2025.11143298"},"language":"en","primary_location":{"id":"doi:10.1109/spawc66079.2025.11143298","is_oa":false,"landing_page_url":"https://doi.org/10.1109/spawc66079.2025.11143298","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2025 IEEE 26th International Workshop on Signal Processing and Artificial Intelligence for Wireless Communications (SPAWC)","raw_type":"proceedings-article"},"type":"conference-paper","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/A5081121079","display_name":"Lucie Klus","orcid":"https://orcid.org/0000-0003-0354-9421"},"institutions":[{"id":"https://openalex.org/I166825849","display_name":"Tampere University","ror":"https://ror.org/033003e23","country_code":"FI","type":"education","lineage":["https://openalex.org/I166825849"]}],"countries":["FI"],"is_corresponding":false,"raw_author_name":"Lucie Klus","raw_affiliation_strings":["Tampere University,Finland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Tampere University,Finland","institution_ids":["https://openalex.org/I166825849"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5044609448","display_name":"Jukka Talvitie","orcid":"https://orcid.org/0000-0001-7685-7666"},"institutions":[{"id":"https://openalex.org/I166825849","display_name":"Tampere University","ror":"https://ror.org/033003e23","country_code":"FI","type":"education","lineage":["https://openalex.org/I166825849"]}],"countries":["FI"],"is_corresponding":false,"raw_author_name":"Jukka Talvitie","raw_affiliation_strings":["Tampere University,Finland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Tampere University,Finland","institution_ids":["https://openalex.org/I166825849"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5063382658","display_name":"Elena Simona Lohan","orcid":"https://orcid.org/0000-0003-1718-6924"},"institutions":[{"id":"https://openalex.org/I166825849","display_name":"Tampere University","ror":"https://ror.org/033003e23","country_code":"FI","type":"education","lineage":["https://openalex.org/I166825849"]}],"countries":["FI"],"is_corresponding":false,"raw_author_name":"Elena Simona Lohan","raw_affiliation_strings":["Tampere University,Finland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Tampere University,Finland","institution_ids":["https://openalex.org/I166825849"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5074836816","display_name":"Roman Klus","orcid":"https://orcid.org/0000-0002-0641-5931"},"institutions":[{"id":"https://openalex.org/I166825849","display_name":"Tampere University","ror":"https://ror.org/033003e23","country_code":"FI","type":"education","lineage":["https://openalex.org/I166825849"]}],"countries":["FI"],"is_corresponding":false,"raw_author_name":"Roman Klus","raw_affiliation_strings":["Tampere University,Finland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Tampere University,Finland","institution_ids":["https://openalex.org/I166825849"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5024840200","display_name":"Bo Tan","orcid":"https://orcid.org/0000-0002-6855-6270"},"institutions":[{"id":"https://openalex.org/I45129253","display_name":"University College London","ror":"https://ror.org/02jx3x895","country_code":"GB","type":"education","lineage":["https://openalex.org/I124357947","https://openalex.org/I45129253"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Bo Tan","raw_affiliation_strings":["University College London,UK"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University College London,UK","institution_ids":["https://openalex.org/I45129253"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5008128583","display_name":"Danijela \u010cabri\u0107","orcid":"https://orcid.org/0000-0002-5967-2683"},"institutions":[{"id":"https://openalex.org/I161318765","display_name":"University of California, Los Angeles","ror":"https://ror.org/046rm7j60","country_code":"US","type":"education","lineage":["https://openalex.org/I161318765"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Danijela Cabric","raw_affiliation_strings":["University of California,Los Angeles,USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of California,Los Angeles,USA","institution_ids":["https://openalex.org/I161318765"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5054197935","display_name":"Mikko Valkama","orcid":"https://orcid.org/0000-0003-0361-0800"},"institutions":[{"id":"https://openalex.org/I166825849","display_name":"Tampere University","ror":"https://ror.org/033003e23","country_code":"FI","type":"education","lineage":["https://openalex.org/I166825849"]}],"countries":["FI"],"is_corresponding":false,"raw_author_name":"Mikko Valkama","raw_affiliation_strings":["Tampere University,Finland"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Tampere University,Finland","institution_ids":["https://openalex.org/I166825849"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"5"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11032","display_name":"VLSI and Analog Circuit Testing","score":0.8151000142097473,"subfield":{"id":"https://openalex.org/subfields/1708","display_name":"Hardware and Architecture"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11032","display_name":"VLSI and Analog Circuit Testing","score":0.8151000142097473,"subfield":{"id":"https://openalex.org/subfields/1708","display_name":"Hardware and Architecture"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10320","display_name":"Neural Networks and Applications","score":0.7997999787330627,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"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/codebook","display_name":"Codebook","score":0.9496895670890808},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6884166598320007},{"id":"https://openalex.org/keywords/feature","display_name":"Feature (linguistics)","score":0.5764487981796265},{"id":"https://openalex.org/keywords/architecture","display_name":"Architecture","score":0.4880003035068512},{"id":"https://openalex.org/keywords/computer-architecture","display_name":"Computer architecture","score":0.361419141292572},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.22673699259757996}],"concepts":[{"id":"https://openalex.org/C127759330","wikidata":"https://www.wikidata.org/wiki/Q637416","display_name":"Codebook","level":2,"score":0.9496895670890808},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6884166598320007},{"id":"https://openalex.org/C2776401178","wikidata":"https://www.wikidata.org/wiki/Q12050496","display_name":"Feature (linguistics)","level":2,"score":0.5764487981796265},{"id":"https://openalex.org/C123657996","wikidata":"https://www.wikidata.org/wiki/Q12271","display_name":"Architecture","level":2,"score":0.4880003035068512},{"id":"https://openalex.org/C118524514","wikidata":"https://www.wikidata.org/wiki/Q173212","display_name":"Computer architecture","level":1,"score":0.361419141292572},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.22673699259757996},{"id":"https://openalex.org/C142362112","wikidata":"https://www.wikidata.org/wiki/Q735","display_name":"Art","level":0,"score":0.0},{"id":"https://openalex.org/C153349607","wikidata":"https://www.wikidata.org/wiki/Q36649","display_name":"Visual arts","level":1,"score":0.0},{"id":"https://openalex.org/C41895202","wikidata":"https://www.wikidata.org/wiki/Q8162","display_name":"Linguistics","level":1,"score":0.0},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/spawc66079.2025.11143298","is_oa":false,"landing_page_url":"https://doi.org/10.1109/spawc66079.2025.11143298","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2025 IEEE 26th International Workshop on Signal Processing and Artificial Intelligence for Wireless Communications (SPAWC)","raw_type":"proceedings-article"},{"id":"pmh:oai:trepo.tuni.fi:10024/231039","is_oa":false,"landing_page_url":"https://trepo.tuni.fi/handle/10024/231039","pdf_url":null,"source":{"id":"https://openalex.org/S4306401860","display_name":"Tampere University Institutional Repository (Tampere University)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I150589677","host_organization_name":"Tampere University of Applied Sciences","host_organization_lineage":["https://openalex.org/I150589677"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"conference"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":15,"referenced_works":["https://openalex.org/W2120549790","https://openalex.org/W2963145597","https://openalex.org/W2992306119","https://openalex.org/W3045610411","https://openalex.org/W3168953114","https://openalex.org/W4205469029","https://openalex.org/W4289654500","https://openalex.org/W4312050602","https://openalex.org/W4377085189","https://openalex.org/W4388739137","https://openalex.org/W4389542096","https://openalex.org/W4393371687","https://openalex.org/W4402474120","https://openalex.org/W4405429206","https://openalex.org/W4407949152"],"related_works":["https://openalex.org/W4391375266","https://openalex.org/W2899084033","https://openalex.org/W2748952813","https://openalex.org/W2026099691","https://openalex.org/W2377486419","https://openalex.org/W2943202426","https://openalex.org/W2137816434","https://openalex.org/W2163679795","https://openalex.org/W2736714427","https://openalex.org/W2038503502"],"abstract_inverted_index":{"This":[0,135],"paper":[1],"introduces":[2],"a":[3,25,29,50,138],"novel":[4],"codebook-free":[5],"machine":[6],"learning":[7],"approach":[8],"for":[9,128,155],"enhancing":[10],"channel":[11],"state":[12],"information":[13],"(CSI)":[14],"feedback":[15,150],"in":[16,49,97,131,142],"5G":[17],"and":[18,93,147,158],"beyond":[19],"networks.":[20,134],"The":[21,43],"proposed":[22,104],"solution":[23],"leverages":[24],"neural":[26],"network":[27],"with":[28],"streamlined":[30],"yet":[31],"effective":[32],"architecture,":[33],"achieving":[34,112],"high":[35,65],"compression":[36,66],"ratios":[37],"while":[38,85],"maintaining":[39],"minimal":[40],"reconstruction":[41,118],"losses.":[42],"model's":[44,105],"performance":[45,96],"is":[46],"rigorously":[47],"evaluated":[48],"realistic":[51],"urban":[52],"environment,":[53],"through":[54],"ray":[55],"tracing":[56],"data,":[57],"demonstrating":[58],"its":[59,126],"robustness":[60],"against":[61],"uncertainties":[62],"even":[63],"at":[64,120],"levels.":[67],"Notably,":[68],"the":[69,72,76,88,95,98,103,143,153],"study":[70],"highlights":[71],"advantages":[73],"of":[74,90,145],"using":[75],"time-domain":[77],"CSI":[78,117,149],"over":[79,107],"frequency-domain":[80],"data":[81],"as":[82],"input":[83],"features,":[84],"also":[86],"highlighting":[87],"importance":[89],"computing":[91],"loss":[92],"assessing":[94],"frequencydomain.":[99],"Comparative":[100],"analysis":[101],"reveals":[102],"superiority":[106],"existing":[108],"state-of-the-art":[109],"(SotA)":[110],"models,":[111],"less":[113],"than":[114],"0.5":[115],"%":[116],"error":[119],"256":[121],"-fold":[122],"compression,":[123],"effectively":[124],"underscoring":[125],"potential":[127],"practical":[129],"deployment":[130],"next-generation":[132],"wireless":[133],"work":[136],"represents":[137],"significant":[139],"step":[140],"forward":[141],"development":[144],"efficient":[146],"reliable":[148],"mechanisms,":[151],"paving":[152],"way":[154],"more":[156],"resilient":[157],"high-performance":[159],"communication":[160],"systems.":[161]},"counts_by_year":[],"updated_date":"2026-07-28T07:46:37.118299","created_date":"2025-10-10T00:00:00"}