{"id":"https://openalex.org/W4415047931","doi":"https://doi.org/10.1109/twc.2025.3617215","title":"Cell-Free Beamforming Design for Physical Layer Multigroup Multicasting","display_name":"Cell-Free Beamforming Design for Physical Layer Multigroup Multicasting","publication_year":2025,"publication_date":"2025-10-10","ids":{"openalex":"https://openalex.org/W4415047931","doi":"https://doi.org/10.1109/twc.2025.3617215"},"language":"en","primary_location":{"id":"doi:10.1109/twc.2025.3617215","is_oa":false,"landing_page_url":"https://doi.org/10.1109/twc.2025.3617215","pdf_url":null,"source":{"id":"https://openalex.org/S63459445","display_name":"IEEE Transactions on Wireless Communications","issn_l":"1536-1276","issn":["1536-1276","1558-2248"],"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 Transactions on Wireless Communications","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/A5002030922","display_name":"Mahmoud Zaher","orcid":"https://orcid.org/0000-0002-6260-7241"},"institutions":[{"id":"https://openalex.org/I86987016","display_name":"KTH Royal Institute of Technology","ror":"https://ror.org/026vcq606","country_code":"SE","type":"education","lineage":["https://openalex.org/I86987016"]}],"countries":["SE"],"is_corresponding":false,"raw_author_name":"Mahmoud Zaher","raw_affiliation_strings":["Division of Communication Systems, KTH Royal Institute of Technology, Stockholm, Sweden"],"raw_orcid":"https://orcid.org/0000-0002-6260-7241","affiliations":[{"raw_affiliation_string":"Division of Communication Systems, KTH Royal Institute of Technology, Stockholm, Sweden","institution_ids":["https://openalex.org/I86987016"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5062293532","display_name":"Emil Bj\u00f6rnson","orcid":"https://orcid.org/0000-0002-5954-434X"},"institutions":[{"id":"https://openalex.org/I86987016","display_name":"KTH Royal Institute of Technology","ror":"https://ror.org/026vcq606","country_code":"SE","type":"education","lineage":["https://openalex.org/I86987016"]}],"countries":["SE"],"is_corresponding":false,"raw_author_name":"Emil Bj\u00f6rnson","raw_affiliation_strings":["Division of Communication Systems, KTH Royal Institute of Technology, Stockholm, Sweden"],"raw_orcid":"https://orcid.org/0000-0002-5954-434X","affiliations":[{"raw_affiliation_string":"Division of Communication Systems, KTH Royal Institute of Technology, Stockholm, Sweden","institution_ids":["https://openalex.org/I86987016"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5064915398","display_name":"Marina Petrova","orcid":"https://orcid.org/0000-0003-3876-2214"},"institutions":[{"id":"https://openalex.org/I86987016","display_name":"KTH Royal Institute of Technology","ror":"https://ror.org/026vcq606","country_code":"SE","type":"education","lineage":["https://openalex.org/I86987016"]}],"countries":["SE"],"is_corresponding":false,"raw_author_name":"Marina Petrova","raw_affiliation_strings":["Division of Communication Systems, KTH Royal Institute of Technology, Stockholm, Sweden"],"raw_orcid":"https://orcid.org/0000-0003-3876-2214","affiliations":[{"raw_affiliation_string":"Division of Communication Systems, KTH Royal Institute of Technology, Stockholm, Sweden","institution_ids":["https://openalex.org/I86987016"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I86987016"],"apc_list":null,"apc_paid":null,"fwci":0.3206,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.56677969,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":94,"max":97},"biblio":{"volume":"25","issue":null,"first_page":"5262","last_page":"5274"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10148","display_name":"Advanced MIMO Systems Optimization","score":0.9965000152587891,"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":0.9965000152587891,"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":0.9894000291824341,"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/T10575","display_name":"Wireless Communication Networks Research","score":0.9728999733924866,"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/beamforming","display_name":"Beamforming","score":0.8769000172615051},{"id":"https://openalex.org/keywords/multicast","display_name":"Multicast","score":0.8191999793052673},{"id":"https://openalex.org/keywords/physical-layer","display_name":"Physical layer","score":0.6388000249862671},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.5442000031471252},{"id":"https://openalex.org/keywords/transmission","display_name":"Transmission (telecommunications)","score":0.5236999988555908},{"id":"https://openalex.org/keywords/computational-complexity-theory","display_name":"Computational complexity theory","score":0.5192000269889832},{"id":"https://openalex.org/keywords/spectral-efficiency","display_name":"Spectral efficiency","score":0.4788999855518341},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.47440001368522644},{"id":"https://openalex.org/keywords/precoding","display_name":"Precoding","score":0.4562000036239624}],"concepts":[{"id":"https://openalex.org/C54197355","wikidata":"https://www.wikidata.org/wiki/Q5782992","display_name":"Beamforming","level":2,"score":0.8769000172615051},{"id":"https://openalex.org/C32295351","wikidata":"https://www.wikidata.org/wiki/Q899288","display_name":"Multicast","level":2,"score":0.8191999793052673},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7630000114440918},{"id":"https://openalex.org/C19247436","wikidata":"https://www.wikidata.org/wiki/Q192727","display_name":"Physical layer","level":3,"score":0.6388000249862671},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.5442000031471252},{"id":"https://openalex.org/C761482","wikidata":"https://www.wikidata.org/wiki/Q118093","display_name":"Transmission (telecommunications)","level":2,"score":0.5236999988555908},{"id":"https://openalex.org/C179799912","wikidata":"https://www.wikidata.org/wiki/Q205084","display_name":"Computational complexity theory","level":2,"score":0.5192000269889832},{"id":"https://openalex.org/C137246740","wikidata":"https://www.wikidata.org/wiki/Q583970","display_name":"Spectral efficiency","level":3,"score":0.4788999855518341},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.47440001368522644},{"id":"https://openalex.org/C160562895","wikidata":"https://www.wikidata.org/wiki/Q7239557","display_name":"Precoding","level":4,"score":0.4562000036239624},{"id":"https://openalex.org/C2776029896","wikidata":"https://www.wikidata.org/wiki/Q3935810","display_name":"Relaxation (psychology)","level":2,"score":0.44749999046325684},{"id":"https://openalex.org/C137836250","wikidata":"https://www.wikidata.org/wiki/Q984063","display_name":"Optimization problem","level":2,"score":0.44359999895095825},{"id":"https://openalex.org/C108037233","wikidata":"https://www.wikidata.org/wiki/Q11375","display_name":"Wireless network","level":3,"score":0.4422999918460846},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.43140000104904175},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.41359999775886536},{"id":"https://openalex.org/C101901036","wikidata":"https://www.wikidata.org/wiki/Q2269096","display_name":"Semidefinite programming","level":2,"score":0.4043999910354614},{"id":"https://openalex.org/C32022120","wikidata":"https://www.wikidata.org/wiki/Q797225","display_name":"Interference (communication)","level":3,"score":0.3894999921321869},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.3853999972343445},{"id":"https://openalex.org/C159694833","wikidata":"https://www.wikidata.org/wiki/Q2321565","display_name":"Iterative method","level":2,"score":0.34139999747276306},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.3328999876976013},{"id":"https://openalex.org/C11704745","wikidata":"https://www.wikidata.org/wiki/Q918337","display_name":"Unicast","level":3,"score":0.31200000643730164},{"id":"https://openalex.org/C120314980","wikidata":"https://www.wikidata.org/wiki/Q180634","display_name":"Distributed computing","level":1,"score":0.31139999628067017},{"id":"https://openalex.org/C194273485","wikidata":"https://www.wikidata.org/wiki/Q1478845","display_name":"Path loss","level":3,"score":0.2937999963760376},{"id":"https://openalex.org/C165696696","wikidata":"https://www.wikidata.org/wiki/Q11287","display_name":"Exploit","level":2,"score":0.28760001063346863},{"id":"https://openalex.org/C184720557","wikidata":"https://www.wikidata.org/wiki/Q7825049","display_name":"Topology (electrical circuits)","level":2,"score":0.28139999508857727},{"id":"https://openalex.org/C110157686","wikidata":"https://www.wikidata.org/wiki/Q922122","display_name":"Broadcasting (networking)","level":2,"score":0.27459999918937683},{"id":"https://openalex.org/C114237682","wikidata":"https://www.wikidata.org/wiki/Q5072483","display_name":"Channel allocation schemes","level":3,"score":0.26980000734329224},{"id":"https://openalex.org/C199845137","wikidata":"https://www.wikidata.org/wiki/Q145490","display_name":"Network topology","level":2,"score":0.2623000144958496},{"id":"https://openalex.org/C148764684","wikidata":"https://www.wikidata.org/wiki/Q621751","display_name":"Approximation algorithm","level":2,"score":0.25920000672340393}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/twc.2025.3617215","is_oa":false,"landing_page_url":"https://doi.org/10.1109/twc.2025.3617215","pdf_url":null,"source":{"id":"https://openalex.org/S63459445","display_name":"IEEE Transactions on Wireless Communications","issn_l":"1536-1276","issn":["1536-1276","1558-2248"],"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 Transactions on Wireless Communications","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":27,"referenced_works":["https://openalex.org/W1509805685","https://openalex.org/W1981044874","https://openalex.org/W1984518765","https://openalex.org/W1990955244","https://openalex.org/W1996215314","https://openalex.org/W2006593332","https://openalex.org/W2031643974","https://openalex.org/W2120045510","https://openalex.org/W2169363112","https://openalex.org/W2405339542","https://openalex.org/W2516684393","https://openalex.org/W2559328514","https://openalex.org/W2587540533","https://openalex.org/W2589647989","https://openalex.org/W2597293148","https://openalex.org/W2606348571","https://openalex.org/W2912522929","https://openalex.org/W2964212138","https://openalex.org/W2974046131","https://openalex.org/W2991370079","https://openalex.org/W3188358066","https://openalex.org/W3196709551","https://openalex.org/W4221162823","https://openalex.org/W4250589301","https://openalex.org/W4288391293","https://openalex.org/W4364302699","https://openalex.org/W4388642423"],"related_works":[],"abstract_inverted_index":{"In":[0],"many":[1],"wireless":[2,40],"communication":[3],"applications,":[4],"it":[5,168],"is":[6,57,71,166,169,179],"desirable":[7],"to":[8,13,26,42,58,72,90,116,143,171],"transmit":[9],"the":[10,28,32,39,44,47,66,74,86,91,97,118,155,163,191],"same":[11,48,67],"data":[12,83],"multiple":[14],"user":[15],"equipments":[16],"(UEs).":[17],"Physical":[18],"layer":[19],"multicasting":[20,56],"presents":[21],"an":[22,80],"efficient":[23],"transmission":[24],"topology":[25],"exploit":[27],"beamforming":[29,76,121],"capabilities":[30],"at":[31,195],"transmitting":[33],"nodes":[34],"and":[35,104,139,154],"broadcast":[36],"nature":[37],"of":[38,55,162,190],"channel":[41],"satisfy":[43],"demand":[45],"for":[46],"content":[49],"from":[50],"several":[51],"UEs.":[52],"An":[53],"advantage":[54],"avoid":[59],"unnecessary":[60],"co-channel":[61],"interference":[62],"between":[63],"UEs":[64],"requesting":[65],"data.":[68],"The":[69,131,160],"difficulty":[70],"find":[73,117],"suitable":[75],"configuration":[77],"that":[78,146,167,187],"guarantees":[79],"acceptable":[81],"minimum":[82],"rate,":[84],"among":[85],"receiving":[87],"UE":[88],"group,":[89],"multicast":[92,101],"transmission.":[93],"This":[94],"paper":[95],"addresses":[96],"max-min":[98],"fair":[99],"multigroup":[100],"optimization":[102,133],"problem":[103,174],"proposes":[105],"a":[106,124,176,184],"novel":[107],"iterative":[108],"elimination":[109],"procedure":[110,134,153,165],"coupled":[111],"with":[112],"semidefinite":[113],"relaxation":[114],"(SDR)":[115],"near-optimal":[119],"rank-1":[120,193],"vectors":[122],"in":[123],"cell-free":[125],"massive":[126],"MIMO":[127],"(multiple-input":[128],"multiple-output)":[129],"network.":[130],"proposed":[132,164],"significantly":[135],"improves":[136],"computational":[137,198],"complexity":[138],"spectral":[140],"efficiency":[141],"compared":[142],"common":[144],"methods":[145],"use":[147],"SDR":[148,173],"followed":[149],"by":[150],"some":[151],"randomization":[152],"state-of-the-art":[156],"difference-of-convex":[157],"approximation":[158],"algorithm.":[159],"importance":[161],"applicable":[170],"any":[172],"where":[175],"low-rank":[177],"solution":[178,194],"desirable.":[180],"Further,":[181],"we":[182],"propose":[183],"low-complexity":[185],"algorithm":[186],"achieves":[188],"87%":[189],"optimal":[192],"orders-of-magnitude":[196],"lower":[197],"time.":[199]},"counts_by_year":[{"year":2026,"cited_by_count":1}],"updated_date":"2026-07-21T08:15:58.654021","created_date":"2025-10-11T00:00:00"}
