{"id":"https://openalex.org/W7116892420","doi":"https://doi.org/10.1109/lwc.2025.3647745","title":"A Refined Alternating Optimization for Sum Rate Maximization in SIM-Aided Multiuser MISO Systems","display_name":"A Refined Alternating Optimization for Sum Rate Maximization in SIM-Aided Multiuser MISO Systems","publication_year":2025,"publication_date":"2025-12-23","ids":{"openalex":"https://openalex.org/W7116892420","doi":"https://doi.org/10.1109/lwc.2025.3647745"},"language":null,"primary_location":{"id":"doi:10.1109/lwc.2025.3647745","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lwc.2025.3647745","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":"https://openalex.org/A5034881119","display_name":"Eduard E. Bahingayi","orcid":"https://orcid.org/0000-0001-5097-2498"},"institutions":[{"id":"https://openalex.org/I120250893","display_name":"New York University Abu Dhabi","ror":"https://ror.org/00e5k0821","country_code":"AE","type":"education","lineage":["https://openalex.org/I120250893","https://openalex.org/I57206974"]}],"countries":["AE"],"is_corresponding":false,"raw_author_name":"Eduard E. Bahingayi","raw_affiliation_strings":["Division of Engineering and the Research Institute NYUAD Wireless Center, New York University, Abu Dhabi, UAE"],"raw_orcid":"https://orcid.org/0000-0001-5097-2498","affiliations":[{"raw_affiliation_string":"Division of Engineering and the Research Institute NYUAD Wireless Center, New York University, Abu Dhabi, UAE","institution_ids":["https://openalex.org/I120250893"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5121066047","display_name":"Shuying Lin","orcid":null},"institutions":[{"id":"https://openalex.org/I41198531","display_name":"Nanjing University of Posts and Telecommunications","ror":"https://ror.org/043bpky34","country_code":"CN","type":"education","lineage":["https://openalex.org/I41198531"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Shuying Lin","raw_affiliation_strings":["School of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Telecommunications and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing, China","institution_ids":["https://openalex.org/I41198531"]}]},{"author_position":"middle","author":{"id":null,"display_name":"Murat Uysal","orcid":"https://orcid.org/0000-0001-5945-0813"},"institutions":[{"id":"https://openalex.org/I120250893","display_name":"New York University Abu Dhabi","ror":"https://ror.org/00e5k0821","country_code":"AE","type":"education","lineage":["https://openalex.org/I120250893","https://openalex.org/I57206974"]}],"countries":["AE"],"is_corresponding":false,"raw_author_name":"Murat Uysal","raw_affiliation_strings":["Division of Engineering and the Research Institute NYUAD Wireless Center, New York University, Abu Dhabi, UAE"],"raw_orcid":"https://orcid.org/0000-0001-5945-0813","affiliations":[{"raw_affiliation_string":"Division of Engineering and the Research Institute NYUAD Wireless Center, New York University, Abu Dhabi, UAE","institution_ids":["https://openalex.org/I120250893"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5121091211","display_name":"Marco Di Renzo","orcid":null},"institutions":[{"id":"https://openalex.org/I1294671590","display_name":"Centre National de la Recherche Scientifique","ror":"https://ror.org/02feahw73","country_code":"FR","type":"government","lineage":["https://openalex.org/I1294671590"]},{"id":"https://openalex.org/I4210097418","display_name":"Laboratoire des signaux et syst\u00e8mes","ror":"https://ror.org/00skw9v43","country_code":"FR","type":"facility","lineage":["https://openalex.org/I1294671590","https://openalex.org/I277688954","https://openalex.org/I277688954","https://openalex.org/I4210097418","https://openalex.org/I4210107720"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"Marco Di Renzo","raw_affiliation_strings":["Universit&#x00E9; Paris-Saclay, CNRS, CentraleSup&#x00E9;lec, Laboratoire des Signaux et Syst&#x00E8;mes, Gif-sur-Yvette, France"],"raw_orcid":"https://orcid.org/0000-0003-0772-8793","affiliations":[{"raw_affiliation_string":"Universit&#x00E9; Paris-Saclay, CNRS, CentraleSup&#x00E9;lec, Laboratoire des Signaux et Syst&#x00E8;mes, Gif-sur-Yvette, France","institution_ids":["https://openalex.org/I1294671590","https://openalex.org/I4210097418"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5121118488","display_name":"Le-Nam Tran","orcid":null},"institutions":[{"id":"https://openalex.org/I100930933","display_name":"University College Dublin","ror":"https://ror.org/05m7pjf47","country_code":"IE","type":"education","lineage":["https://openalex.org/I100930933"]}],"countries":["IE"],"is_corresponding":false,"raw_author_name":"Le-Nam Tran","raw_affiliation_strings":["School of Electrical and Electronic Engineering, University College Dublin, Dublin 4, Ireland"],"raw_orcid":"https://orcid.org/0000-0002-9317-9980","affiliations":[{"raw_affiliation_string":"School of Electrical and Electronic Engineering, University College Dublin, Dublin 4, Ireland","institution_ids":["https://openalex.org/I100930933"]}]}],"institutions":[],"countries_distinct_count":4,"institutions_distinct_count":5,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.3193,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.60152352,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":91,"max":95},"biblio":{"volume":"15","issue":null,"first_page":"1250","last_page":"1254"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11458","display_name":"Advanced Wireless Communication Technologies","score":0.9941999912261963,"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":0.9941999912261963,"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":0.0015999999595806003,"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"}},{"id":"https://openalex.org/T10936","display_name":"Millimeter-Wave Propagation and Modeling","score":0.000699999975040555,"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/maximization","display_name":"Maximization","score":0.774399995803833},{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.7401000261306763},{"id":"https://openalex.org/keywords/beamforming","display_name":"Beamforming","score":0.609499990940094},{"id":"https://openalex.org/keywords/benchmark","display_name":"Benchmark (surveying)","score":0.5932999849319458},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.47350001335144043},{"id":"https://openalex.org/keywords/iterative-method","display_name":"Iterative method","score":0.4627000093460083},{"id":"https://openalex.org/keywords/optimization-problem","display_name":"Optimization problem","score":0.45739999413490295}],"concepts":[{"id":"https://openalex.org/C2776330181","wikidata":"https://www.wikidata.org/wiki/Q18358244","display_name":"Maximization","level":2,"score":0.774399995803833},{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.7401000261306763},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6126000285148621},{"id":"https://openalex.org/C54197355","wikidata":"https://www.wikidata.org/wiki/Q5782992","display_name":"Beamforming","level":2,"score":0.609499990940094},{"id":"https://openalex.org/C185798385","wikidata":"https://www.wikidata.org/wiki/Q1161707","display_name":"Benchmark (surveying)","level":2,"score":0.5932999849319458},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.5669999718666077},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.47350001335144043},{"id":"https://openalex.org/C159694833","wikidata":"https://www.wikidata.org/wiki/Q2321565","display_name":"Iterative method","level":2,"score":0.4627000093460083},{"id":"https://openalex.org/C137836250","wikidata":"https://www.wikidata.org/wiki/Q984063","display_name":"Optimization problem","level":2,"score":0.45739999413490295},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.40299999713897705},{"id":"https://openalex.org/C44280652","wikidata":"https://www.wikidata.org/wiki/Q104837","display_name":"Phase (matter)","level":2,"score":0.3944999873638153},{"id":"https://openalex.org/C147764199","wikidata":"https://www.wikidata.org/wiki/Q6865248","display_name":"Minification","level":2,"score":0.3262999951839447},{"id":"https://openalex.org/C2776257435","wikidata":"https://www.wikidata.org/wiki/Q1576430","display_name":"Bandwidth (computing)","level":2,"score":0.28349998593330383},{"id":"https://openalex.org/C153258448","wikidata":"https://www.wikidata.org/wiki/Q1199743","display_name":"Gradient descent","level":3,"score":0.2815999984741211},{"id":"https://openalex.org/C157764524","wikidata":"https://www.wikidata.org/wiki/Q1383412","display_name":"Throughput","level":3,"score":0.2547999918460846},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.2538999915122986},{"id":"https://openalex.org/C127233936","wikidata":"https://www.wikidata.org/wiki/Q1417473","display_name":"Entropy maximization","level":3,"score":0.2513999938964844}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/lwc.2025.3647745","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lwc.2025.3647745","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"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G1104714080","display_name":null,"funder_award_id":"22/US/3847","funder_id":"https://openalex.org/F8766430056","funder_display_name":"Research Ireland"},{"id":"https://openalex.org/G3413260315","display_name":"Physics-based wireless AI providing scalability and efficiency","funder_award_id":"ANR-23-CHR4-0003","funder_id":"https://openalex.org/F4320320883","funder_display_name":"Agence Nationale de la Recherche"},{"id":"https://openalex.org/G5824697660","display_name":null,"funder_award_id":"13/RC/2077_P2","funder_id":"https://openalex.org/F8766430056","funder_display_name":"Research Ireland"},{"id":"https://openalex.org/G6139133114","display_name":null,"funder_award_id":"CG017","funder_id":"https://openalex.org/F4320330069","funder_display_name":"Tamkeen"},{"id":"https://openalex.org/G6288601437","display_name":"CHEDDAR: Communications Hub for Empowering Distributed clouD computing Applications and Research - TMF uplift","funder_award_id":"EP/Y037421/1","funder_id":"https://openalex.org/F4320334627","funder_display_name":"Engineering and Physical Sciences Research Council"},{"id":"https://openalex.org/G8444387157","display_name":"CHEDDAR: Communications Hub For Empowering Distributed ClouD Computing Applications And Research","funder_award_id":"EP/X040518/1","funder_id":"https://openalex.org/F4320334627","funder_display_name":"Engineering and Physical Sciences Research Council"}],"funders":[{"id":"https://openalex.org/F4320320883","display_name":"Agence Nationale de la Recherche","ror":"https://ror.org/00rbzpz17"},{"id":"https://openalex.org/F4320330069","display_name":"Tamkeen","ror":null},{"id":"https://openalex.org/F4320334627","display_name":"Engineering and Physical Sciences Research Council","ror":"https://ror.org/0439y7842"},{"id":"https://openalex.org/F8766430056","display_name":"Research Ireland","ror":null}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":21,"referenced_works":["https://openalex.org/W1970830346","https://openalex.org/W2798701005","https://openalex.org/W4381785979","https://openalex.org/W4387869979","https://openalex.org/W4390491928","https://openalex.org/W4392157642","https://openalex.org/W4396505702","https://openalex.org/W4397026518","https://openalex.org/W4399209128","https://openalex.org/W4401748396","https://openalex.org/W4401879367","https://openalex.org/W4404479818","https://openalex.org/W4408323658","https://openalex.org/W4408323671","https://openalex.org/W4409076621","https://openalex.org/W4410584070","https://openalex.org/W4411232172","https://openalex.org/W4414757826","https://openalex.org/W4416113939","https://openalex.org/W7083433846","https://openalex.org/W7084769433"],"related_works":[],"abstract_inverted_index":{"Stacked":[0],"intelligent":[1],"metasurfaces":[2],"(SIMs)":[3],"have":[4],"emerged":[5],"as":[6],"a":[7,89,195,214],"disruptive":[8],"technology":[9],"for":[10,228],"future":[11],"wireless":[12],"networks.":[13],"To":[14,120],"investigate":[15],"their":[16,181],"capabilities,":[17],"we":[18,96,123,140,183],"study":[19],"the":[20,49,56,82,113,117,145,157,176,210,229],"sum":[21,217],"rate":[22,218],"maximization":[23],"problem":[24,47],"in":[25,116,203],"an":[26,187],"SIM-based":[27],"multiuser":[28],"(MU)":[29],"multiple-input":[30],"single-output":[31],"(MISO)":[32],"downlink":[33],"system.":[34],"A":[35],"vast":[36],"majority":[37],"of":[38,69,84,132,220],"pioneer":[39],"studies,":[40],"if":[41],"not":[42,110],"all,":[43],"address":[44],"this":[45,94,121],"fundamental":[46],"using":[48,186],"prevailing":[50],"alternating":[51],"optimization":[52,131],"(AO)":[53],"framework,":[54],"where":[55],"digital":[57,133],"beamforming":[58],"(DB)":[59],"and":[60,106,135,160],"SIM":[61,85,91,136,146],"phase":[62,137,147,177],"shifts":[63,148,178],"are":[64,169],"optimized":[65],"alternately.":[66],"However,":[67],"many":[68],"these":[70,208],"approaches":[71],"suffer":[72],"from":[73],"suboptimal":[74],"performance,":[75],"quickly":[76],"leading":[77],"to":[78,128,155,174,180,222,225],"performance":[79,100,152,193],"saturation,":[80],"when":[81,162],"number":[83],"layers":[86],"increases":[87],"assuming":[88],"fixed":[90],"thickness.":[92],"In":[93],"letter,":[95],"demonstrate":[97],"that":[98,142,185],"significant":[99,151],"gains":[101],"can":[102],"still":[103],"be":[104],"achieved,":[105],"such":[107],"saturation":[108],"does":[109],"occur":[111],"with":[112],"proposed":[114,211],"method":[115,190,212],"considered":[118],"setting.":[119],"end,":[122],"provide":[124],"practical":[125],"design":[126],"guidelines":[127],"improve":[129],"AO-based":[130],"precoders":[134],"shifts.":[138],"Specifically,":[139],"show":[141],"(i)":[143],"optimizing":[144,156],"first":[149],"yields":[150],"improvements,":[153],"compared":[154,224],"DB":[158],"first;":[159],"(ii)":[161],"applying":[163],"projected":[164],"gradient":[165],"(PG)":[166],"methods,":[167],"which":[168,199],"gradually":[170],"becoming":[171],"more":[172],"popular":[173],"optimize":[175],"thanks":[179],"scalability,":[182],"find":[184],"iterative":[188],"PG":[189,197],"achieves":[191,213],"better":[192],"than":[194],"single":[196],"step,":[198],"is":[200],"commonly":[201],"used":[202],"existing":[204],"solutions.":[205],"Based":[206],"on":[207],"customizations,":[209],"higher":[215],"achievable":[216],"(ASR)":[219],"up":[221],"115.53%,":[223],"benchmark":[226],"schemes":[227],"scenarios":[230],"under":[231],"consideration.":[232]},"counts_by_year":[{"year":2025,"cited_by_count":1}],"updated_date":"2026-07-22T07:51:19.307946","created_date":"2025-12-23T00:00:00"}
