{"id":"https://openalex.org/W7130375275","doi":"https://doi.org/10.1109/jiot.2026.3666120","title":"Statistical CSI-Based Optimization for Uplink RIS-Aided Cell-Free Massive MIMO Systems","display_name":"Statistical CSI-Based Optimization for Uplink RIS-Aided Cell-Free Massive MIMO Systems","publication_year":2026,"publication_date":"2026-02-18","ids":{"openalex":"https://openalex.org/W7130375275","doi":"https://doi.org/10.1109/jiot.2026.3666120"},"language":null,"primary_location":{"id":"doi:10.1109/jiot.2026.3666120","is_oa":false,"landing_page_url":"https://doi.org/10.1109/jiot.2026.3666120","pdf_url":null,"source":{"id":"https://openalex.org/S2480266640","display_name":"IEEE Internet of Things Journal","issn_l":"2327-4662","issn":["2327-4662","2372-2541"],"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 Internet of Things Journal","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/A5041294062","display_name":"Thong\u2010Nhat Tran","orcid":"https://orcid.org/0000-0002-6474-9681"},"institutions":[{"id":"https://openalex.org/I163753206","display_name":"Chungbuk National University","ror":"https://ror.org/02wnxgj78","country_code":"KR","type":"education","lineage":["https://openalex.org/I163753206"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Thong-Nhat Tran","raw_affiliation_strings":["School of Information and Communication Engineering, Chungbuk National University, Chungju, South Korea"],"raw_orcid":"https://orcid.org/0000-0002-6474-9681","affiliations":[{"raw_affiliation_string":"School of Information and Communication Engineering, Chungbuk National University, Chungju, South Korea","institution_ids":["https://openalex.org/I163753206"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5017495041","display_name":"Giovanni Interdonato","orcid":"https://orcid.org/0000-0002-6078-835X"},"institutions":[{"id":"https://openalex.org/I186995768","display_name":"Universit\u00e0 degli studi di Cassino e del Lazio Meridionale","ror":"https://ror.org/04nxkaq16","country_code":"IT","type":"education","lineage":["https://openalex.org/I186995768"]}],"countries":["IT"],"is_corresponding":false,"raw_author_name":"Giovanni Interdonato","raw_affiliation_strings":["Department of Electrical and Information Engineering (DIEI), University of Cassino and Southern Lazio, Cassino, Italy"],"raw_orcid":"https://orcid.org/0000-0002-6078-835X","affiliations":[{"raw_affiliation_string":"Department of Electrical and Information Engineering (DIEI), University of Cassino and Southern Lazio, Cassino, Italy","institution_ids":["https://openalex.org/I186995768"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5021191255","display_name":"Daniel Benevides da Costa","orcid":"https://orcid.org/0000-0002-5439-7475"},"institutions":[{"id":"https://openalex.org/I134085113","display_name":"King Fahd University of Petroleum and Minerals","ror":"https://ror.org/03yez3163","country_code":"SA","type":"education","lineage":["https://openalex.org/I134085113"]}],"countries":["SA"],"is_corresponding":false,"raw_author_name":"Daniel Benevides da Costa","raw_affiliation_strings":["Department of Electrical Engineering, Interdisciplinary Research Center for Communication Systems and Sensing (IRC-CSS), King Fahd University of Petroleum and Minerals (KFUPM), Dhahran, Saudi Arabia"],"raw_orcid":"https://orcid.org/0000-0002-5439-7475","affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, Interdisciplinary Research Center for Communication Systems and Sensing (IRC-CSS), King Fahd University of Petroleum and Minerals (KFUPM), Dhahran, Saudi Arabia","institution_ids":["https://openalex.org/I134085113"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5037079266","display_name":"Beongku An","orcid":"https://orcid.org/0000-0002-0587-3754"},"institutions":[{"id":"https://openalex.org/I94588446","display_name":"Hongik University","ror":"https://ror.org/00egdv862","country_code":"KR","type":"education","lineage":["https://openalex.org/I94588446"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Beongku An","raw_affiliation_strings":["Department of Software and Communications Engineering, Hongik University, Sejong, Republic of Korea"],"raw_orcid":"https://orcid.org/0000-0002-0587-3754","affiliations":[{"raw_affiliation_string":"Department of Software and Communications Engineering, Hongik University, Sejong, Republic of Korea","institution_ids":["https://openalex.org/I94588446"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5126311130","display_name":"Taejoon Kim","orcid":null},"institutions":[{"id":"https://openalex.org/I163753206","display_name":"Chungbuk National University","ror":"https://ror.org/02wnxgj78","country_code":"KR","type":"education","lineage":["https://openalex.org/I163753206"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Taejoon Kim","raw_affiliation_strings":["School of Information and Communication Engineering, Chungbuk National University, Chungju, South Korea"],"raw_orcid":"https://orcid.org/0000-0001-6326-2559","affiliations":[{"raw_affiliation_string":"School of Information and Communication Engineering, Chungbuk National University, Chungju, South Korea","institution_ids":["https://openalex.org/I163753206"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":4,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.14278547,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"13","issue":"10","first_page":"21057","last_page":"21078"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11458","display_name":"Advanced Wireless Communication Technologies","score":0.9937000274658203,"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/T11458","display_name":"Advanced Wireless Communication Technologies","score":0.9937000274658203,"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":0.002199999988079071,"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/T10125","display_name":"Advanced Wireless Communication Techniques","score":0.0015999999595806003,"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":0.920799970626831},{"id":"https://openalex.org/keywords/overhead","display_name":"Overhead (engineering)","score":0.6197999715805054},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.5388000011444092},{"id":"https://openalex.org/keywords/channel-state-information","display_name":"Channel state information","score":0.5230000019073486},{"id":"https://openalex.org/keywords/transmission","display_name":"Transmission (telecommunications)","score":0.503600001335144},{"id":"https://openalex.org/keywords/fading","display_name":"Fading","score":0.5033000111579895},{"id":"https://openalex.org/keywords/resource-allocation","display_name":"Resource allocation","score":0.49410000443458557},{"id":"https://openalex.org/keywords/optimization-problem","display_name":"Optimization problem","score":0.48240000009536743}],"concepts":[{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.920799970626831},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7767000198364258},{"id":"https://openalex.org/C2779960059","wikidata":"https://www.wikidata.org/wiki/Q7113681","display_name":"Overhead (engineering)","level":2,"score":0.6197999715805054},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.5388000011444092},{"id":"https://openalex.org/C148063708","wikidata":"https://www.wikidata.org/wiki/Q5072511","display_name":"Channel state information","level":3,"score":0.5230000019073486},{"id":"https://openalex.org/C761482","wikidata":"https://www.wikidata.org/wiki/Q118093","display_name":"Transmission (telecommunications)","level":2,"score":0.503600001335144},{"id":"https://openalex.org/C81978471","wikidata":"https://www.wikidata.org/wiki/Q1196572","display_name":"Fading","level":3,"score":0.5033000111579895},{"id":"https://openalex.org/C29202148","wikidata":"https://www.wikidata.org/wiki/Q287260","display_name":"Resource allocation","level":2,"score":0.49410000443458557},{"id":"https://openalex.org/C137836250","wikidata":"https://www.wikidata.org/wiki/Q984063","display_name":"Optimization problem","level":2,"score":0.48240000009536743},{"id":"https://openalex.org/C57273362","wikidata":"https://www.wikidata.org/wiki/Q576722","display_name":"Decoding methods","level":2,"score":0.4562999904155731},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.43309998512268066},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.41110000014305115},{"id":"https://openalex.org/C159694833","wikidata":"https://www.wikidata.org/wiki/Q2321565","display_name":"Iterative method","level":2,"score":0.4108000099658966},{"id":"https://openalex.org/C163258240","wikidata":"https://www.wikidata.org/wiki/Q25342","display_name":"Power (physics)","level":2,"score":0.35280001163482666},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.3513000011444092},{"id":"https://openalex.org/C13944312","wikidata":"https://www.wikidata.org/wiki/Q7512748","display_name":"Signal-to-noise ratio (imaging)","level":2,"score":0.3504999876022339},{"id":"https://openalex.org/C137246740","wikidata":"https://www.wikidata.org/wiki/Q583970","display_name":"Spectral efficiency","level":3,"score":0.34310001134872437},{"id":"https://openalex.org/C2780609101","wikidata":"https://www.wikidata.org/wiki/Q17156588","display_name":"Resource management (computing)","level":2,"score":0.30219998955726624},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.29280000925064087},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.2854999899864197},{"id":"https://openalex.org/C32022120","wikidata":"https://www.wikidata.org/wiki/Q797225","display_name":"Interference (communication)","level":3,"score":0.271699994802475},{"id":"https://openalex.org/C18555067","wikidata":"https://www.wikidata.org/wiki/Q8375051","display_name":"Joint (building)","level":2,"score":0.2702000141143799},{"id":"https://openalex.org/C557945733","wikidata":"https://www.wikidata.org/wiki/Q389772","display_name":"Data transmission","level":2,"score":0.2621000111103058},{"id":"https://openalex.org/C168292644","wikidata":"https://www.wikidata.org/wiki/Q10860336","display_name":"Power optimization","level":4,"score":0.2540999948978424}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/jiot.2026.3666120","is_oa":false,"landing_page_url":"https://doi.org/10.1109/jiot.2026.3666120","pdf_url":null,"source":{"id":"https://openalex.org/S2480266640","display_name":"IEEE Internet of Things Journal","issn_l":"2327-4662","issn":["2327-4662","2372-2541"],"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 Internet of Things Journal","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G2777138326","display_name":null,"funder_award_id":"RS\u20102023\u201000244014","funder_id":"https://openalex.org/F4320322120","funder_display_name":"National Research Foundation of Korea"}],"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":0,"referenced_works":[],"related_works":[],"abstract_inverted_index":{"We":[0,171],"address":[1],"comprehensive":[2],"optimization":[3,64,141,167],"of":[4,148],"uplink":[5,77,84,122,208],"spectral":[6],"efficiency":[7],"(SE)":[8],"and":[9,48,76,101,120,152,163,197,217],"resource":[10],"allocation":[11,79],"in":[12,190,229],"multiple":[13],"reconfigurable":[14],"intelligent":[15],"surfaces":[16],"(RIS)-aided":[17],"cell-free":[18],"massive":[19],"MIMO":[20],"(CF-mMIMO)":[21],"systems.":[22],"While":[23],"integrating":[24],"CF-mMIMO":[25],"with":[26,104,225],"RISs":[27,199],"enhances":[28],"SE,":[29],"existing":[30],"solutions":[31],"assume":[32],"ideal":[33],"conditions":[34],"or":[35],"separately":[36],"optimize":[37],"access":[38],"point":[39],"(AP)":[40],"clustering,":[41,71,150],"large-scale":[42],"fading":[43],"decoding":[44],"(LSFD),":[45],"RIS":[46,73,153],"phase-shifts,":[47],"power":[49,78,161],"allocation.":[50],"To":[51],"bridge":[52],"these":[53],"gaps,":[54],"we":[55],"propose":[56],"a":[57,129,146,157,174,191],"unified":[58],"statistical":[59,110],"channel":[60],"state":[61],"information":[62],"(CSI)-based":[63],"(SCOP)":[65],"framework":[66,204],"that":[67],"jointly":[68,168],"optimizes":[69],"AP":[70,149],"LSFD,":[72,151],"phase-shift":[74,154],"control,":[75],"to":[80,177,213],"maximize":[81],"the":[82,179,184,201,206,221],"minimum":[83],"SE.":[85],"A":[86],"closed-form":[87,158],"SE":[88,209],"expression":[89],"is":[90,126],"derived":[91],"for":[92,98,133],"maximum":[93],"ratio":[94],"(MR)":[95],"combining,":[96],"accounting":[97],"both":[99],"direct":[100],"cascaded":[102],"channels":[103],"spatially":[105],"correlated":[106],"Ricean":[107],"fading.":[108],"Leveraging":[109],"CSI":[111],"significantly":[112],"reduces":[113],"real-time":[114],"acquisition":[115],"overhead":[116],"while":[117],"enabling":[118],"robust":[119],"efficient":[121],"transmission":[123],"design.":[124],"SCOP":[125,203],"solved":[127],"via":[128],"multi-step":[130],"strategy:":[131],"(i)":[132],"fixed":[134],"power,":[135],"an":[136,165],"iterative":[137],"algorithm":[138],"computes":[139],"joint":[140],"parameters":[142,182],"(JOP)":[143],"vector":[144],"representing":[145],"combination":[147],"parameters;":[155],"(ii)":[156],"solution":[159],"updates":[160],"allocation;":[162],"(iii)":[164],"alternating":[166],"refines":[169],"both.":[170],"also":[172],"introduce":[173],"novel":[175],"method":[176],"extract":[178],"optimal":[180],"system":[181],"from":[183,210],"JOP.":[185],"Simulation":[186],"results":[187],"show":[188],"that,":[189],"representative":[192],"60":[193],"APs,":[194],"30":[195],"users,":[196],"4":[198],"scenario,":[200],"proposed":[202],"lifts":[205],"median":[207],"2.4":[211],"bit/s/Hz":[212,215],"3.9":[214],"(+65%)":[216],"more":[218],"than":[219],"doubles":[220],"bottom":[222],"5%":[223],"rate,":[224],"similar":[226],"60\u2013120%":[227],"gains":[228],"other":[230],"setups.":[231]},"counts_by_year":[],"updated_date":"2026-08-01T09:00:35.917206","created_date":"2026-02-19T00:00:00"}
