{"id":"https://openalex.org/W4309242592","doi":"https://doi.org/10.1109/iswcs56560.2022.9940415","title":"Cluster Precoders for Cell-Free MU-MIMO Systems","display_name":"Cluster Precoders for Cell-Free MU-MIMO Systems","publication_year":2022,"publication_date":"2022-10-19","ids":{"openalex":"https://openalex.org/W4309242592","doi":"https://doi.org/10.1109/iswcs56560.2022.9940415"},"language":"en","primary_location":{"id":"doi:10.1109/iswcs56560.2022.9940415","is_oa":false,"landing_page_url":"https://doi.org/10.1109/iswcs56560.2022.9940415","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2022 International Symposium on Wireless Communication Systems (ISWCS)","raw_type":"proceedings-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/A5060321238","display_name":"Andr\u00e9 R. Flores","orcid":"https://orcid.org/0000-0001-8059-570X"},"institutions":[{"id":"https://openalex.org/I2699952","display_name":"Pontifical Catholic University of Rio de Janeiro","ror":"https://ror.org/01dg47b60","country_code":"BR","type":"education","lineage":["https://openalex.org/I2699952"]}],"countries":["BR"],"is_corresponding":true,"raw_author_name":"Andre R. Flores","raw_affiliation_strings":["Centre for Telecommunications Studies, Pontifical Catholic University of Rio de Janeiro,Brazil","Centre for Telecommunications Studies, Pontifical Catholic University of Rio de Janeiro, Brazil"],"affiliations":[{"raw_affiliation_string":"Centre for Telecommunications Studies, Pontifical Catholic University of Rio de Janeiro,Brazil","institution_ids":["https://openalex.org/I2699952"]},{"raw_affiliation_string":"Centre for Telecommunications Studies, Pontifical Catholic University of Rio de Janeiro, Brazil","institution_ids":["https://openalex.org/I2699952"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5049028312","display_name":"Rodrigo C. de Lamare","orcid":"https://orcid.org/0000-0003-2322-6451"},"institutions":[{"id":"https://openalex.org/I2699952","display_name":"Pontifical Catholic University of Rio de Janeiro","ror":"https://ror.org/01dg47b60","country_code":"BR","type":"education","lineage":["https://openalex.org/I2699952"]},{"id":"https://openalex.org/I52099693","display_name":"University of York","ror":"https://ror.org/04m01e293","country_code":"GB","type":"education","lineage":["https://openalex.org/I52099693"]}],"countries":["BR","GB"],"is_corresponding":false,"raw_author_name":"Rodrigo C. de Lamare","raw_affiliation_strings":["Centre for Telecommunications Studies, Pontifical Catholic University of Rio de Janeiro,Brazil","Department of Electronic Engineering, University of York, United Kingdom","Centre for Telecommunications Studies, Pontifical Catholic University of Rio de Janeiro, Brazil"],"affiliations":[{"raw_affiliation_string":"Centre for Telecommunications Studies, Pontifical Catholic University of Rio de Janeiro,Brazil","institution_ids":["https://openalex.org/I2699952"]},{"raw_affiliation_string":"Department of Electronic Engineering, University of York, United Kingdom","institution_ids":["https://openalex.org/I52099693"]},{"raw_affiliation_string":"Centre for Telecommunications Studies, Pontifical Catholic University of Rio de Janeiro, Brazil","institution_ids":["https://openalex.org/I2699952"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5082119521","display_name":"Kumar Vijay Mishra","orcid":"https://orcid.org/0000-0002-5386-609X"},"institutions":[{"id":"https://openalex.org/I166416128","display_name":"DEVCOM Army Research Laboratory","ror":"https://ror.org/011hc8f90","country_code":"US","type":"government","lineage":["https://openalex.org/I1304082316","https://openalex.org/I1330347796","https://openalex.org/I166416128","https://openalex.org/I2802705668","https://openalex.org/I4210154437"]},{"id":"https://openalex.org/I2802705668","display_name":"United States Army Combat Capabilities Development Command","ror":"https://ror.org/02rdkx920","country_code":"US","type":"other","lineage":["https://openalex.org/I1304082316","https://openalex.org/I1330347796","https://openalex.org/I2802705668","https://openalex.org/I4210154437"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Kumar Vijay Mishra","raw_affiliation_strings":["United States DEVCOM Army Research Laboratory,Adelphi,MD,USA,20783"],"affiliations":[{"raw_affiliation_string":"United States DEVCOM Army Research Laboratory,Adelphi,MD,USA,20783","institution_ids":["https://openalex.org/I166416128","https://openalex.org/I2802705668"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5060321238"],"corresponding_institution_ids":["https://openalex.org/I2699952"],"apc_list":null,"apc_paid":null,"fwci":0.3659,"has_fulltext":false,"cited_by_count":4,"citation_normalized_percentile":{"value":0.57732603,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":96},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"6"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10148","display_name":"Advanced MIMO Systems Optimization","score":1.0,"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":1.0,"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":0.9995999932289124,"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/T11458","display_name":"Advanced Wireless Communication Technologies","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"}}],"keywords":[{"id":"https://openalex.org/keywords/precoding","display_name":"Precoding","score":0.8704129457473755},{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.8118929862976074},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7079724669456482},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.627274751663208},{"id":"https://openalex.org/keywords/computational-complexity-theory","display_name":"Computational complexity theory","score":0.6051174402236938},{"id":"https://openalex.org/keywords/interference","display_name":"Interference (communication)","score":0.5671461820602417},{"id":"https://openalex.org/keywords/fading","display_name":"Fading","score":0.5302673578262329},{"id":"https://openalex.org/keywords/transmission","display_name":"Transmission (telecommunications)","score":0.507541298866272},{"id":"https://openalex.org/keywords/selection","display_name":"Selection (genetic algorithm)","score":0.4349285960197449},{"id":"https://openalex.org/keywords/computation","display_name":"Computation","score":0.4196193814277649},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.38901305198669434},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.3380233645439148},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.32134270668029785},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.3109487295150757},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.20100712776184082},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.14859220385551453}],"concepts":[{"id":"https://openalex.org/C160562895","wikidata":"https://www.wikidata.org/wiki/Q7239557","display_name":"Precoding","level":4,"score":0.8704129457473755},{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.8118929862976074},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7079724669456482},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.627274751663208},{"id":"https://openalex.org/C179799912","wikidata":"https://www.wikidata.org/wiki/Q205084","display_name":"Computational complexity theory","level":2,"score":0.6051174402236938},{"id":"https://openalex.org/C32022120","wikidata":"https://www.wikidata.org/wiki/Q797225","display_name":"Interference (communication)","level":3,"score":0.5671461820602417},{"id":"https://openalex.org/C81978471","wikidata":"https://www.wikidata.org/wiki/Q1196572","display_name":"Fading","level":3,"score":0.5302673578262329},{"id":"https://openalex.org/C761482","wikidata":"https://www.wikidata.org/wiki/Q118093","display_name":"Transmission (telecommunications)","level":2,"score":0.507541298866272},{"id":"https://openalex.org/C81917197","wikidata":"https://www.wikidata.org/wiki/Q628760","display_name":"Selection (genetic algorithm)","level":2,"score":0.4349285960197449},{"id":"https://openalex.org/C45374587","wikidata":"https://www.wikidata.org/wiki/Q12525525","display_name":"Computation","level":2,"score":0.4196193814277649},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.38901305198669434},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.3380233645439148},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.32134270668029785},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.3109487295150757},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.20100712776184082},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.14859220385551453},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/iswcs56560.2022.9940415","is_oa":false,"landing_page_url":"https://doi.org/10.1109/iswcs56560.2022.9940415","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2022 International Symposium on Wireless Communication Systems (ISWCS)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G1588083323","display_name":null,"funder_award_id":"2021/03929-7","funder_id":"https://openalex.org/F4320320997","funder_display_name":"Funda\u00e7\u00e3o de Amparo \u00e0 Pesquisa do Estado de S\u00e3o Paulo"}],"funders":[{"id":"https://openalex.org/F4320320997","display_name":"Funda\u00e7\u00e3o de Amparo \u00e0 Pesquisa do Estado de S\u00e3o Paulo","ror":"https://ror.org/02ddkpn78"},{"id":"https://openalex.org/F4320322025","display_name":"Conselho Nacional de Desenvolvimento Cient\u00edfico e Tecnol\u00f3gico","ror":"https://ror.org/03swz6y49"},{"id":"https://openalex.org/F4320322749","display_name":"Funda\u00e7\u00e3o Carlos Chagas Filho de Amparo \u00e0 Pesquisa do Estado do Rio de Janeiro","ror":"https://ror.org/03kk0s825"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":21,"referenced_works":["https://openalex.org/W2105147296","https://openalex.org/W2135669535","https://openalex.org/W2286275639","https://openalex.org/W2593893328","https://openalex.org/W2607478241","https://openalex.org/W2610350904","https://openalex.org/W2884911846","https://openalex.org/W2964042011","https://openalex.org/W2965123227","https://openalex.org/W2974046131","https://openalex.org/W2984884920","https://openalex.org/W3011830499","https://openalex.org/W3012557618","https://openalex.org/W3031223339","https://openalex.org/W3081615953","https://openalex.org/W3091752016","https://openalex.org/W3131457891","https://openalex.org/W3154888594","https://openalex.org/W3158832185","https://openalex.org/W3209298344","https://openalex.org/W4206566284"],"related_works":["https://openalex.org/W4281688526","https://openalex.org/W2152088989","https://openalex.org/W2756419127","https://openalex.org/W2327053383","https://openalex.org/W4366493479","https://openalex.org/W3141240674","https://openalex.org/W2489379490","https://openalex.org/W2141031289","https://openalex.org/W4328011863","https://openalex.org/W2134520490"],"abstract_inverted_index":{"Cell-free":[0],"(CF)":[1],"multiple-input":[2],"multiple-output":[3],"systems":[4,18],"employ":[5,88],"distributed":[6],"access":[7],"points":[8],"(APs)":[9],"to":[10,20,23,76,93,144,151],"enhance":[11],"their":[12],"performance.":[13],"In":[14],"the":[15,62,78,102,105,112,116,128,132,138,153,156,173],"downlink,":[16],"CF":[17],"resort":[19],"precoding":[21],"techniques":[22],"overcome":[24],"multiuser":[25],"interference.":[26],"However,":[27],"network-wide":[28,174],"precoders":[29,47,158,175],"incur":[30],"high":[31],"computational":[32,117,129],"and":[33,68],"signaling":[34],"costs":[35],"that":[36,48,164],"cannot":[37],"be":[38],"afforded":[39],"by":[40,60,136],"practical":[41],"systems.":[42],"Therefore,":[43],"we":[44,86],"develop":[45],"user-centric":[46],"use":[49],"clusters":[50,57,79],"of":[51,80,104,131,140,155,172],"APs":[52],"for":[53],"downlink":[54],"transmission.":[55],"The":[56],"are":[58,97,125,159],"formed":[59],"employing":[61],"large-scale":[63],"fading":[64],"coefficients":[65],"between":[66],"users":[67,96],"APs.":[69,81],"An":[70],"antenna":[71],"selection":[72,91],"policy":[73],"is":[74,119,134],"proposed":[75,113,157],"define":[77],"Different":[82],"from":[83,111],"other":[84],"techniques,":[85],"also":[87],"a":[89],"user":[90],"matrix":[92],"restrict":[94],"which":[95,142],"taken":[98],"into":[99],"account":[100],"in":[101],"computation":[103],"precoder.":[106],"Two":[107],"major":[108],"benefits":[109],"emerge":[110],"approach.":[114],"First,":[115],"cost":[118],"reduced":[120,135,147],"because":[121],"several":[122],"channel":[123],"estimates":[124],"unnecessary.":[126],"Second,":[127],"complexity":[130],"precoder":[133],"restricting":[137],"number":[139],"users,":[141],"leads":[143],"matrices":[145],"with":[146],"size.":[148],"Closed-form":[149],"expressions":[150],"compute":[152],"sum-rate":[154],"derived.":[160],"Numerical":[161],"results":[162],"demonstrate":[163],"our":[165],"approach":[166],"can":[167],"attain":[168],"more":[169],"than":[170],"90%":[171],"performance,":[176],"while":[177],"offering":[178],"lower":[179],"costs.":[180]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":2},{"year":2023,"cited_by_count":1}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}