{"id":"https://openalex.org/W4402027482","doi":"https://doi.org/10.1109/ojcoms.2024.3445990","title":"Unveiling New Frontiers of Downlink Training in User-Centric Cell-Free Massive MIMO","display_name":"Unveiling New Frontiers of Downlink Training in User-Centric Cell-Free Massive MIMO","publication_year":2024,"publication_date":"2024-01-01","ids":{"openalex":"https://openalex.org/W4402027482","doi":"https://doi.org/10.1109/ojcoms.2024.3445990"},"language":"en","primary_location":{"id":"doi:10.1109/ojcoms.2024.3445990","is_oa":true,"landing_page_url":"https://doi.org/10.1109/ojcoms.2024.3445990","pdf_url":null,"source":{"id":"https://openalex.org/S4210202420","display_name":"IEEE Open Journal of the Communications Society","issn_l":"2644-125X","issn":["2644-125X"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310316002","host_organization_name":"IEEE Communications Society","host_organization_lineage":["https://openalex.org/P4310316002","https://openalex.org/P4310319808"],"host_organization_lineage_names":["IEEE Communications Society","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 Open Journal of the Communications Society","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://doi.org/10.1109/ojcoms.2024.3445990","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5068049967","display_name":"Guillem Femenias","orcid":"https://orcid.org/0000-0003-2002-1733"},"institutions":[{"id":"https://openalex.org/I50441567","display_name":"Universitat de les Illes Balears","ror":"https://ror.org/03e10x626","country_code":"ES","type":"education","lineage":["https://openalex.org/I50441567"]}],"countries":["ES"],"is_corresponding":true,"raw_author_name":"Guillem Femenias","raw_affiliation_strings":["Mobile Communications Group and Artificial Intelligence Research Institute, University of the Balearic Islands, Palma, Spain"],"affiliations":[{"raw_affiliation_string":"Mobile Communications Group and Artificial Intelligence Research Institute, University of the Balearic Islands, Palma, Spain","institution_ids":["https://openalex.org/I50441567"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5041966559","display_name":"Felip Riera-Palou","orcid":"https://orcid.org/0000-0001-7080-3173"},"institutions":[{"id":"https://openalex.org/I50441567","display_name":"Universitat de les Illes Balears","ror":"https://ror.org/03e10x626","country_code":"ES","type":"education","lineage":["https://openalex.org/I50441567"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Felip Riera-Palou","raw_affiliation_strings":["Mobile Communications Group and Artificial Intelligence Research Institute, University of the Balearic Islands, Palma, Spain"],"affiliations":[{"raw_affiliation_string":"Mobile Communications Group and Artificial Intelligence Research Institute, University of the Balearic Islands, Palma, Spain","institution_ids":["https://openalex.org/I50441567"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5068049967"],"corresponding_institution_ids":["https://openalex.org/I50441567"],"apc_list":{"value":1750,"currency":"USD","value_usd":1750},"apc_paid":{"value":1750,"currency":"USD","value_usd":1750},"fwci":0.6674,"has_fulltext":false,"cited_by_count":3,"citation_normalized_percentile":{"value":0.69469552,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":91,"max":96},"biblio":{"volume":"5","issue":null,"first_page":"5103","last_page":"5122"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10148","display_name":"Advanced MIMO Systems Optimization","score":0.9997000098228455,"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/T10148","display_name":"Advanced MIMO Systems Optimization","score":0.9997000098228455,"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/T10796","display_name":"Cooperative Communication and Network Coding","score":0.993399977684021,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"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/T11409","display_name":"Advanced Wireless Network Optimization","score":0.9776999950408936,"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/telecommunications-link","display_name":"Telecommunications link","score":0.6305387020111084},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.5646260380744934},{"id":"https://openalex.org/keywords/training","display_name":"Training (meteorology)","score":0.5497076511383057},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.49820590019226074},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.28988009691238403},{"id":"https://openalex.org/keywords/geography","display_name":"Geography","score":0.1591987907886505},{"id":"https://openalex.org/keywords/beamforming","display_name":"Beamforming","score":0.056401193141937256}],"concepts":[{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.6305387020111084},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.5646260380744934},{"id":"https://openalex.org/C2777211547","wikidata":"https://www.wikidata.org/wiki/Q17141490","display_name":"Training (meteorology)","level":2,"score":0.5497076511383057},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.49820590019226074},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.28988009691238403},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"score":0.1591987907886505},{"id":"https://openalex.org/C54197355","wikidata":"https://www.wikidata.org/wiki/Q5782992","display_name":"Beamforming","level":2,"score":0.056401193141937256},{"id":"https://openalex.org/C153294291","wikidata":"https://www.wikidata.org/wiki/Q25261","display_name":"Meteorology","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/ojcoms.2024.3445990","is_oa":true,"landing_page_url":"https://doi.org/10.1109/ojcoms.2024.3445990","pdf_url":null,"source":{"id":"https://openalex.org/S4210202420","display_name":"IEEE Open Journal of the Communications Society","issn_l":"2644-125X","issn":["2644-125X"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310316002","host_organization_name":"IEEE Communications Society","host_organization_lineage":["https://openalex.org/P4310316002","https://openalex.org/P4310319808"],"host_organization_lineage_names":["IEEE Communications Society","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 Open Journal of the Communications Society","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:c29d892e358743838aa8c60f76d4c5ef","is_oa":true,"landing_page_url":"https://doaj.org/article/c29d892e358743838aa8c60f76d4c5ef","pdf_url":null,"source":{"id":"https://openalex.org/S112646816","display_name":"SHILAP Revista de lepidopterolog\u00eda","issn_l":"0300-5267","issn":["0300-5267","2340-4078"],"is_oa":true,"is_in_doaj":true,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"IEEE Open Journal of the Communications Society, Vol 5, Pp 5103-5122 (2024)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.1109/ojcoms.2024.3445990","is_oa":true,"landing_page_url":"https://doi.org/10.1109/ojcoms.2024.3445990","pdf_url":null,"source":{"id":"https://openalex.org/S4210202420","display_name":"IEEE Open Journal of the Communications Society","issn_l":"2644-125X","issn":["2644-125X"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310316002","host_organization_name":"IEEE Communications Society","host_organization_lineage":["https://openalex.org/P4310316002","https://openalex.org/P4310319808"],"host_organization_lineage_names":["IEEE Communications Society","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 Open Journal of the Communications Society","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G2335177107","display_name":null,"funder_award_id":"TED2021-131624B-I00","funder_id":"https://openalex.org/F4320315062","funder_display_name":"Ministerio de Ciencia, Innovaci\u00f3n y Universidades"},{"id":"https://openalex.org/G2342240438","display_name":null,"funder_award_id":"PID2020-115323RB-C32","funder_id":"https://openalex.org/F4320315062","funder_display_name":"Ministerio de Ciencia, Innovaci\u00f3n y Universidades"}],"funders":[{"id":"https://openalex.org/F4320315062","display_name":"Ministerio de Ciencia, Innovaci\u00f3n y Universidades","ror":null}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":26,"referenced_works":["https://openalex.org/W1518945650","https://openalex.org/W2087421547","https://openalex.org/W2122910039","https://openalex.org/W2286275639","https://openalex.org/W2784331297","https://openalex.org/W2797535556","https://openalex.org/W2963508491","https://openalex.org/W2964181991","https://openalex.org/W2965123227","https://openalex.org/W2968074955","https://openalex.org/W2974046131","https://openalex.org/W3001739548","https://openalex.org/W3005440806","https://openalex.org/W3016312036","https://openalex.org/W3045526577","https://openalex.org/W3080932450","https://openalex.org/W3099019646","https://openalex.org/W3099069205","https://openalex.org/W3102127631","https://openalex.org/W3145211404","https://openalex.org/W3163336461","https://openalex.org/W3188358066","https://openalex.org/W3206898142","https://openalex.org/W4206156395","https://openalex.org/W4385834606","https://openalex.org/W4396753526"],"related_works":["https://openalex.org/W4391375266","https://openalex.org/W2748952813","https://openalex.org/W2548963335","https://openalex.org/W2159941915","https://openalex.org/W1995129237","https://openalex.org/W1761601995","https://openalex.org/W2904599916","https://openalex.org/W4321608401","https://openalex.org/W4300468626","https://openalex.org/W2909457694"],"abstract_inverted_index":{"Cell-free":[0],"massive":[1],"MIMO":[2],"(CF-mMIMO)":[3],"emerges":[4],"as":[5],"a":[6,32],"pivotal":[7,133],"technology":[8],"in":[9,76,95,139],"the":[10,19,68,141,151,171,184],"landscape":[11],"of":[12,35,45,71,78,86,111,118,135,143,153],"beyond-5G":[13],"and":[14,25,53,60,98,158],"6G":[15],"wireless":[16],"networks,":[17],"addressing":[18],"ever-increasing":[20],"demand":[21],"for":[22,129,160],"seamless":[23],"connectivity":[24],"unprecedented":[26],"data":[27],"throughput.":[28],"This":[29],"paper":[30,65],"undertakes":[31],"comprehensive":[33],"exploration":[34],"scalable":[36],"usercentric":[37],"(UC)":[38],"CF-mMIMO":[39,145],"systems,":[40],"focusing":[41],"on":[42],"critical":[43],"aspects":[44],"downlink":[46],"(DL)":[47],"channel":[48,80,180],"state":[49],"information":[50],"(CSI)":[51],"acquisition":[52,138],"its":[54],"intricate":[55],"interactions":[56],"with":[57,165,177],"both":[58],"distributed":[59,174],"centralized":[61,162],"precoding":[62,124,163,175],"strategies.":[63],"The":[64,108,132],"delves":[66],"into":[67],"crucial":[69],"role":[70,134],"DL":[72,136,154,178],"CSI":[73,137],"acquisition,":[74],"particularly":[75],"scenarios":[77],"weak":[79],"hardening":[81],"arising":[82],"from":[83],"sparse":[84],"subsets":[85],"access":[87],"points":[88],"(APs)":[89],"serving":[90],"specific":[91],"mobile":[92],"stations":[93],"(MS)":[94],"UC":[96,144],"strategies,":[97],"transmission":[99],"over":[100],"spatially":[101],"correlated":[102],"multiple":[103],"keyhole":[104],"Ricean":[105],"fading":[106],"channels.":[107],"main":[109],"contributions":[110],"this":[112],"research":[113],"work":[114],"include":[115],"in-depth":[116],"analyses":[117],"different":[119],"detection":[120,156],"schemes":[121,176],"under":[122],"varying":[123],"scenarios,":[125],"offering":[126],"valuable":[127],"insights":[128],"practical":[130],"deployment.":[131],"optimizing":[140],"performance":[142],"networks":[146],"is":[147],"fully":[148],"assessed,":[149],"dismissing":[150],"use":[152],"pilot-based":[155],"approaches":[157],"advocating":[159],"either":[161],"architectures":[164],"statistical":[166],"CSI-based":[167],"decoding":[168],"strategies":[169],"at":[170,183],"MSs":[172],"or":[173],"blind":[179],"estimation-based":[181],"decoders":[182],"MSs.":[185]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":2}],"updated_date":"2025-12-26T23:08:49.675405","created_date":"2025-10-10T00:00:00"}