{"id":"https://openalex.org/W4410227120","doi":"https://doi.org/10.1109/wcnc61545.2025.10978214","title":"Hybrid Beamforming for Multi-User Near-Field Ultra-Massive MIMO Capacity Improvement","display_name":"Hybrid Beamforming for Multi-User Near-Field Ultra-Massive MIMO Capacity Improvement","publication_year":2025,"publication_date":"2025-03-24","ids":{"openalex":"https://openalex.org/W4410227120","doi":"https://doi.org/10.1109/wcnc61545.2025.10978214"},"language":"en","primary_location":{"id":"doi:10.1109/wcnc61545.2025.10978214","is_oa":false,"landing_page_url":"https://doi.org/10.1109/wcnc61545.2025.10978214","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2025 IEEE Wireless Communications and Networking Conference (WCNC)","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/A5108144067","display_name":"Shan Shan","orcid":null},"institutions":[{"id":"https://openalex.org/I139759216","display_name":"Beijing University of Posts and Telecommunications","ror":"https://ror.org/04w9fbh59","country_code":"CN","type":"education","lineage":["https://openalex.org/I139759216"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Shan Shan","raw_affiliation_strings":["Wireless Signal Processing and Network Laboratory, Beijing University of Posts and Telecommunications,Beijing,China,100876"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Wireless Signal Processing and Network Laboratory, Beijing University of Posts and Telecommunications,Beijing,China,100876","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5100355277","display_name":"Yong Li","orcid":"https://orcid.org/0000-0001-5617-1659"},"institutions":[{"id":"https://openalex.org/I139759216","display_name":"Beijing University of Posts and Telecommunications","ror":"https://ror.org/04w9fbh59","country_code":"CN","type":"education","lineage":["https://openalex.org/I139759216"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yong Li","raw_affiliation_strings":["Wireless Signal Processing and Network Laboratory, Beijing University of Posts and Telecommunications,Beijing,China,100876"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Wireless Signal Processing and Network Laboratory, Beijing University of Posts and Telecommunications,Beijing,China,100876","institution_ids":["https://openalex.org/I139759216"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I139759216"],"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":"6"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10069","display_name":"Antenna Design and Analysis","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace 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/T10069","display_name":"Antenna Design and Analysis","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace 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":0.9998000264167786,"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/T11946","display_name":"Antenna Design and Optimization","score":0.9986000061035156,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace 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/mimo","display_name":"MIMO","score":0.7695143818855286},{"id":"https://openalex.org/keywords/beamforming","display_name":"Beamforming","score":0.7182826399803162},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.5629087090492249},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.4009571075439453},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.2795155346393585},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.17036613821983337}],"concepts":[{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.7695143818855286},{"id":"https://openalex.org/C54197355","wikidata":"https://www.wikidata.org/wiki/Q5782992","display_name":"Beamforming","level":2,"score":0.7182826399803162},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.5629087090492249},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.4009571075439453},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.2795155346393585},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.17036613821983337}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/wcnc61545.2025.10978214","is_oa":false,"landing_page_url":"https://doi.org/10.1109/wcnc61545.2025.10978214","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2025 IEEE Wireless Communications and Networking Conference (WCNC)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/7","display_name":"Affordable and clean energy","score":0.800000011920929}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":14,"referenced_works":["https://openalex.org/W2005102437","https://openalex.org/W2151716519","https://openalex.org/W2469174679","https://openalex.org/W2803053556","https://openalex.org/W3117044336","https://openalex.org/W3163598197","https://openalex.org/W3164550829","https://openalex.org/W3173000966","https://openalex.org/W4293095171","https://openalex.org/W4321021943","https://openalex.org/W4385800592","https://openalex.org/W4385885073","https://openalex.org/W4399665799","https://openalex.org/W4400351801"],"related_works":["https://openalex.org/W4391375266","https://openalex.org/W2899084033","https://openalex.org/W2748952813","https://openalex.org/W2963170046","https://openalex.org/W2376244802","https://openalex.org/W1971477554","https://openalex.org/W2390279801","https://openalex.org/W2158075901","https://openalex.org/W818226659","https://openalex.org/W4391913857"],"abstract_inverted_index":{"Ultra-massive":[0],"multiple-input":[1],"multiple-output":[2],"(UM-MIMO)":[3],"systems":[4,31,89],"with":[5,41],"hybrid":[6,84,143],"beamforming":[7,144],"architectures":[8],"are":[9,116],"extensively":[10],"studied":[11],"to":[12,57,122,155,162,194],"enhance":[13],"the":[14,21,26,35,46,59,66,79,92,98,102,107,112,124,184],"capacity":[15,108,132,191],"of":[16,23,29,65,83,111,151],"future":[17],"wireless":[18],"networks.":[19],"As":[20],"number":[22],"antennas":[24],"increases,":[25],"near-field":[27,47,99,113,125,142],"property":[28,126],"UM-MIMO":[30,88],"becomes":[32],"significant.":[33],"Unlike":[34],"classical":[36],"far-field":[37],"line-of-sight":[38],"(LoS)":[39],"channel":[40,49,115,165],"single":[42],"available":[43,96,103],"data":[44],"stream,":[45],"LoS":[48,60,114],"offers":[50],"a":[51,128,134,189],"significantly":[52],"increased":[53],"spatial":[54,61,94,104,171],"degrees-of-freedom":[55],"(DoFs)":[56],"enable":[58],"multiplexing.":[62],"However,":[63],"most":[64],"existing":[67],"literature":[68],"considered":[69],"single-user":[70],"transmission":[71],"scenarios.":[72],"Hence,":[73],"we":[74],"focus":[75],"our":[76,152],"attention":[77],"on":[78],"more":[80],"challenging":[81],"design":[82],"beam-forming":[85],"for":[86,131,159],"multi-user":[87,141,170],"by":[90],"leveraging":[91],"extra":[93],"DoFs":[95,105],"in":[97],"region.":[100],"Specifically,":[101],"and":[106],"upper":[109],"bound":[110],"theoretically":[117],"analyzed":[118],"at":[119],"first.":[120],"Then,":[121],"exploit":[123],"as":[127,174,176],"new":[129],"possibility":[130],"improvement,":[133],"block":[135],"diagonal":[136],"geometric":[137],"mean":[138],"decomposition":[139],"(BD-GMD)":[140],"algorithm":[145],"is":[146,154],"proposed.":[147],"The":[148],"key":[149],"idea":[150],"approach":[153],"allocate":[156],"specific":[157],"subarrays":[158],"different":[160],"users":[161],"optimize":[163],"their":[164],"eigenvalue":[166],"distribution,":[167],"thereby":[168],"maximizing":[169],"multiplexing":[172],"performance":[173],"well":[175],"minimizing":[177],"inter-user":[178],"interference.":[179],"Simulation":[180],"results":[181],"demonstrate":[182],"that":[183],"proposed":[185],"BD-GMD":[186],"scheme":[187],"achieves":[188],"significant":[190],"improvement":[192],"compared":[193],"conventional":[195],"approaches.":[196]},"counts_by_year":[],"updated_date":"2026-07-14T23:27:15.235271","created_date":"2025-10-10T00:00:00"}
