{"id":"https://openalex.org/W4416078252","doi":"https://doi.org/10.1109/lwc.2025.3630756","title":"Fluid XL-MIMO: Multiuser Antenna Allocation Exploiting the Visibility Region Information","display_name":"Fluid XL-MIMO: Multiuser Antenna Allocation Exploiting the Visibility Region Information","publication_year":2025,"publication_date":"2025-11-10","ids":{"openalex":"https://openalex.org/W4416078252","doi":"https://doi.org/10.1109/lwc.2025.3630756"},"language":"en","primary_location":{"id":"doi:10.1109/lwc.2025.3630756","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lwc.2025.3630756","pdf_url":null,"source":{"id":"https://openalex.org/S2500830676","display_name":"IEEE Wireless Communications Letters","issn_l":"2162-2337","issn":["2162-2337","2162-2345"],"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 Wireless Communications Letters","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":null,"display_name":"Chao Zhang","orcid":"https://orcid.org/0009-0004-0043-7146"},"institutions":[{"id":"https://openalex.org/I199305430","display_name":"Nantong University","ror":"https://ror.org/02afcvw97","country_code":"CN","type":"education","lineage":["https://openalex.org/I199305430"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Chao Zhang","raw_affiliation_strings":["School of Information Science and Technology, Nantong University, Nantong, China"],"raw_orcid":"https://orcid.org/0009-0004-0043-7146","affiliations":[{"raw_affiliation_string":"School of Information Science and Technology, Nantong University, Nantong, China","institution_ids":["https://openalex.org/I199305430"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100440589","display_name":"Jue Wang","orcid":"https://orcid.org/0000-0001-8013-0486"},"institutions":[{"id":"https://openalex.org/I199305430","display_name":"Nantong University","ror":"https://ror.org/02afcvw97","country_code":"CN","type":"education","lineage":["https://openalex.org/I199305430"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Jue Wang","raw_affiliation_strings":["School of Information Science and Technology, Nantong University, Nantong, China"],"raw_orcid":"https://orcid.org/0000-0001-8013-0486","affiliations":[{"raw_affiliation_string":"School of Information Science and Technology, Nantong University, Nantong, China","institution_ids":["https://openalex.org/I199305430"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5085856839","display_name":"Li You","orcid":"https://orcid.org/0000-0001-8600-1423"},"institutions":[{"id":"https://openalex.org/I76569877","display_name":"Southeast University","ror":"https://ror.org/04ct4d772","country_code":"CN","type":"education","lineage":["https://openalex.org/I76569877"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Li You","raw_affiliation_strings":["National Mobile Communications Research Laboratory, Southeast University, Nanjing, China"],"raw_orcid":"https://orcid.org/0000-0001-8600-1423","affiliations":[{"raw_affiliation_string":"National Mobile Communications Research Laboratory, Southeast University, Nanjing, China","institution_ids":["https://openalex.org/I76569877"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5079863632","display_name":"Chan\u2010Byoung Chae","orcid":"https://orcid.org/0000-0001-9561-3341"},"institutions":[{"id":"https://openalex.org/I193775966","display_name":"Yonsei University","ror":"https://ror.org/01wjejq96","country_code":"KR","type":"education","lineage":["https://openalex.org/I193775966"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Chan-Byoung Chae","raw_affiliation_strings":["School of Integrated Technology, Yonsei University, Seoul, South Korea","School of Integrated Technology, Yonsei University, Seoul, Korea"],"raw_orcid":"https://orcid.org/0000-0001-9561-3341","affiliations":[{"raw_affiliation_string":"School of Integrated Technology, Yonsei University, Seoul, South Korea","institution_ids":["https://openalex.org/I193775966"]},{"raw_affiliation_string":"School of Integrated Technology, Yonsei University, Seoul, Korea","institution_ids":["https://openalex.org/I193775966"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5011048761","display_name":"Kai\u2010Kit Wong","orcid":"https://orcid.org/0000-0001-7521-0078"},"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":"Kai-Kit Wong","raw_affiliation_strings":["Department of Electronic and Electrical Engineering, University College London, London, U.K","Department of Electronic and Electrical Engineering, University College London, London, United Kingdom"],"raw_orcid":"https://orcid.org/0000-0001-7521-0078","affiliations":[{"raw_affiliation_string":"Department of Electronic and Electrical Engineering, University College London, London, U.K","institution_ids":["https://openalex.org/I45129253"]},{"raw_affiliation_string":"Department of Electronic and Electrical Engineering, University College London, London, United Kingdom","institution_ids":["https://openalex.org/I45129253"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":5,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I199305430"],"apc_list":null,"apc_paid":null,"fwci":0.6531,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.76428855,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":96,"max":98},"biblio":{"volume":"15","issue":null,"first_page":"520","last_page":"524"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10148","display_name":"Advanced MIMO Systems Optimization","score":0.44690001010894775,"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":0.44690001010894775,"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/T10575","display_name":"Wireless Communication Networks Research","score":0.08479999750852585,"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/T11158","display_name":"Wireless Networks and Protocols","score":0.07760000228881836,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.6230999827384949},{"id":"https://openalex.org/keywords/antenna","display_name":"Antenna (radio)","score":0.6201000213623047},{"id":"https://openalex.org/keywords/visibility","display_name":"Visibility","score":0.5986999869346619},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.5490999817848206},{"id":"https://openalex.org/keywords/exploit","display_name":"Exploit","score":0.5419999957084656},{"id":"https://openalex.org/keywords/transmission","display_name":"Transmission (telecommunications)","score":0.536899983882904},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.4530999958515167},{"id":"https://openalex.org/keywords/ergodic-theory","display_name":"Ergodic theory","score":0.43880000710487366}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.766700029373169},{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.6230999827384949},{"id":"https://openalex.org/C21822782","wikidata":"https://www.wikidata.org/wiki/Q131214","display_name":"Antenna (radio)","level":2,"score":0.6201000213623047},{"id":"https://openalex.org/C123403432","wikidata":"https://www.wikidata.org/wiki/Q654068","display_name":"Visibility","level":2,"score":0.5986999869346619},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.5490999817848206},{"id":"https://openalex.org/C165696696","wikidata":"https://www.wikidata.org/wiki/Q11287","display_name":"Exploit","level":2,"score":0.5419999957084656},{"id":"https://openalex.org/C761482","wikidata":"https://www.wikidata.org/wiki/Q118093","display_name":"Transmission (telecommunications)","level":2,"score":0.536899983882904},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.4530999958515167},{"id":"https://openalex.org/C122044880","wikidata":"https://www.wikidata.org/wiki/Q5498822","display_name":"Ergodic theory","level":2,"score":0.43880000710487366},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.426800012588501},{"id":"https://openalex.org/C33676613","wikidata":"https://www.wikidata.org/wiki/Q13415176","display_name":"Dimension (graph theory)","level":2,"score":0.39340001344680786},{"id":"https://openalex.org/C2775918612","wikidata":"https://www.wikidata.org/wiki/Q994794","display_name":"Noma","level":3,"score":0.3716000020503998},{"id":"https://openalex.org/C198082294","wikidata":"https://www.wikidata.org/wiki/Q3399648","display_name":"Position (finance)","level":2,"score":0.36399999260902405},{"id":"https://openalex.org/C165650700","wikidata":"https://www.wikidata.org/wiki/Q4636347","display_name":"3G MIMO","level":4,"score":0.33410000801086426},{"id":"https://openalex.org/C62191587","wikidata":"https://www.wikidata.org/wiki/Q4771249","display_name":"Antenna array","level":3,"score":0.32899999618530273},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.32839998602867126},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.3278999924659729},{"id":"https://openalex.org/C60069766","wikidata":"https://www.wikidata.org/wiki/Q357054","display_name":"Antenna diversity","level":3,"score":0.30959999561309814},{"id":"https://openalex.org/C126042441","wikidata":"https://www.wikidata.org/wiki/Q1324888","display_name":"Frame (networking)","level":2,"score":0.29339998960494995},{"id":"https://openalex.org/C150060386","wikidata":"https://www.wikidata.org/wiki/Q7574054","display_name":"Spatial correlation","level":2,"score":0.2890999913215637},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.2824999988079071},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.27570000290870667},{"id":"https://openalex.org/C108037233","wikidata":"https://www.wikidata.org/wiki/Q11375","display_name":"Wireless network","level":3,"score":0.27410000562667847},{"id":"https://openalex.org/C155050386","wikidata":"https://www.wikidata.org/wiki/Q1068623","display_name":"Antenna height considerations","level":3,"score":0.2635999917984009}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/lwc.2025.3630756","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lwc.2025.3630756","pdf_url":null,"source":{"id":"https://openalex.org/S2500830676","display_name":"IEEE Wireless Communications Letters","issn_l":"2162-2337","issn":["2162-2337","2162-2345"],"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 Wireless Communications Letters","raw_type":"journal-article"},{"id":"pmh:oai:eprints.ucl.ac.uk.OAI2:10218869","is_oa":false,"landing_page_url":"https://discovery.ucl.ac.uk/id/eprint/10218869/","pdf_url":null,"source":{"id":"https://openalex.org/S4306400024","display_name":"UCL Discovery (University College London)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I45129253","host_organization_name":"University College London","host_organization_lineage":["https://openalex.org/I45129253"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"IEEE Wireless Communications Letters       (2025)     (In press).","raw_type":"Article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G1498746940","display_name":null,"funder_award_id":"62322104","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G2842576049","display_name":"Fluid Antenna Systems for 6G Wireless Communications: Implementation, System Optimisation and Theoretical Analysis","funder_award_id":"EP/W026813/1","funder_id":"https://openalex.org/F4320334627","funder_display_name":"Engineering and Physical Sciences Research Council"},{"id":"https://openalex.org/G785863559","display_name":null,"funder_award_id":"2242022k60007","funder_id":"https://openalex.org/F4320335787","funder_display_name":"Fundamental Research Funds for the Central Universities"},{"id":"https://openalex.org/G8924584062","display_name":null,"funder_award_id":"62171240","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320334627","display_name":"Engineering and Physical Sciences Research Council","ror":"https://ror.org/0439y7842"},{"id":"https://openalex.org/F4320335787","display_name":"Fundamental Research Funds for the Central Universities","ror":null}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":19,"referenced_works":["https://openalex.org/W1594064992","https://openalex.org/W3039758053","https://openalex.org/W3072069827","https://openalex.org/W3107232831","https://openalex.org/W4256330275","https://openalex.org/W4319303049","https://openalex.org/W4319878826","https://openalex.org/W4322576964","https://openalex.org/W4386523965","https://openalex.org/W4388073421","https://openalex.org/W4388966692","https://openalex.org/W4393184779","https://openalex.org/W4403722203","https://openalex.org/W4403976980","https://openalex.org/W4403977088","https://openalex.org/W4404410614","https://openalex.org/W4408145380","https://openalex.org/W4411226631","https://openalex.org/W4415482238"],"related_works":[],"abstract_inverted_index":{"Fluid":[0],"antenna":[1,12,32,91,94,107],"(FA)":[2],"technology":[3],"can":[4],"fully":[5],"exploit":[6,111],"the":[7,31,63,67,75,79,129],"spatial":[8],"dimension":[9],"by":[10],"adapting":[11],"positions":[13],"to":[14],"reshape":[15],"multiple-input":[16],"multiple-output":[17],"(MIMO)":[18],"wireless":[19],"channels.":[20,41],"Most":[21],"existing":[22],"studies":[23],"on":[24],"FA":[25],"assume":[26],"consistent":[27],"channel":[28,68],"statistics":[29],"across":[30,71],"array,":[33,65],"which":[34,54,118],"may":[35],"not":[36],"hold":[37],"in":[38,53,117,135],"spatially":[39],"non-stationary":[40],"In":[42],"this":[43,102],"letter,":[44],"we":[45,83,104],"consider":[46],"an":[47],"FA-assisted":[48],"extra-large":[49],"MIMO":[50],"(XL-MIMO)":[51],"system":[52],"different":[55,58],"users":[56,119],"have":[57,120],"visibility":[59],"regions":[60],"(VRs)":[61],"over":[62],"entire":[64],"and":[66,93],"characteristics":[69],"vary":[70],"these":[72],"VRs.":[73,125],"With":[74],"goal":[76],"of":[77,89,131],"maximizing":[78],"ergodic":[80],"downlink":[81],"sum-rate,":[82],"propose":[84],"a":[85],"transmission":[86],"framework":[87],"consisting":[88],"long-term":[90],"allocation":[92,108],"position":[95],"optimization,":[96],"along":[97],"with":[98],"short-term":[99],"precoding.":[100],"Under":[101],"framework,":[103],"design":[105],"multiuser":[106],"algorithms":[109],"that":[110],"VR":[112,133],"information":[113,134],"for":[114],"practical":[115],"scenarios":[116],"either":[121],"non-overlapping":[122],"or":[123],"overlapping":[124],"Simulation":[126],"results":[127],"demonstrate":[128],"superiority":[130],"leveraging":[132],"FA-aided":[136],"XL-MIMO":[137],"systems.":[138]},"counts_by_year":[{"year":2026,"cited_by_count":1}],"updated_date":"2025-12-21T01:58:51.020947","created_date":"2025-11-10T00:00:00"}