{"id":"https://openalex.org/W7167897212","doi":"https://doi.org/10.1109/ojcoms.2026.3712231","title":"From Partitioning to Fully-Connected RIS: A Beyond-Diagonal-RIS-Based Multiuser Wireless Transmission Perspective","display_name":"From Partitioning to Fully-Connected RIS: A Beyond-Diagonal-RIS-Based Multiuser Wireless Transmission Perspective","publication_year":2026,"publication_date":"2026-01-01","ids":{"openalex":"https://openalex.org/W7167897212","doi":"https://doi.org/10.1109/ojcoms.2026.3712231"},"language":"en","primary_location":{"id":"doi:10.1109/ojcoms.2026.3712231","is_oa":true,"landing_page_url":"https://doi.org/10.1109/ojcoms.2026.3712231","pdf_url":null,"source":{"id":"https://openalex.org/S4210202420","display_name":"IEEE Open Journal of the Communications Society","issn_l":"2644-125X","issn":["2644-125X"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310316002","host_organization_name":"IEEE Communications Society","host_organization_lineage":["https://openalex.org/P4310316002","https://openalex.org/P4310319808"],"host_organization_lineage_names":["IEEE Communications Society","Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Open Journal of the Communications Society","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://doi.org/10.1109/ojcoms.2026.3712231","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5019634992","display_name":"Tufail Ahmad","orcid":"https://orcid.org/0009-0006-0154-3252"},"institutions":[{"id":"https://openalex.org/I1351752","display_name":"Ko\u00e7 University","ror":"https://ror.org/00jzwgz36","country_code":"TR","type":"education","lineage":["https://openalex.org/I1351752"]}],"countries":["TR"],"is_corresponding":false,"raw_author_name":"Tufail Ahmad","raw_affiliation_strings":["Department of Electrical and Electronics Engineering, Koç University, Istanbul, Türkiye"],"raw_orcid":"https://orcid.org/0009-0006-0154-3252","affiliations":[{"raw_affiliation_string":"Department of Electrical and Electronics Engineering, Koç University, Istanbul, Türkiye","institution_ids":["https://openalex.org/I1351752"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5051978835","display_name":"Ertu\u011frul Ba\u015far","orcid":"https://orcid.org/0000-0001-5566-2392"},"institutions":[{"id":"https://openalex.org/I1351752","display_name":"Ko\u00e7 University","ror":"https://ror.org/00jzwgz36","country_code":"TR","type":"education","lineage":["https://openalex.org/I1351752"]}],"countries":["TR"],"is_corresponding":false,"raw_author_name":"Ertugrul Basar","raw_affiliation_strings":["Department of Electrical and Electronics Engineering, Koç University, Istanbul, Türkiye"],"raw_orcid":"https://orcid.org/0000-0001-5566-2392","affiliations":[{"raw_affiliation_string":"Department of Electrical and Electronics Engineering, Koç University, Istanbul, Türkiye","institution_ids":["https://openalex.org/I1351752"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I1351752"],"apc_list":{"value":1750,"currency":"USD","value_usd":1750},"apc_paid":{"value":1750,"currency":"USD","value_usd":1750},"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.81316272,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"7","issue":null,"first_page":"7921","last_page":"7939"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11458","display_name":"Advanced Wireless Communication Technologies","score":0.29989999532699585,"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":0.29989999532699585,"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/T11158","display_name":"Wireless Networks and Protocols","score":0.1761000007390976,"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/T11409","display_name":"Advanced Wireless Network Optimization","score":0.07419999688863754,"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/perspective","display_name":"Perspective (graphical)","score":0.6534000039100647},{"id":"https://openalex.org/keywords/transmission","display_name":"Transmission (telecommunications)","score":0.42179998755455017},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.4180000126361847},{"id":"https://openalex.org/keywords/wireless-network","display_name":"Wireless network","score":0.32670000195503235},{"id":"https://openalex.org/keywords/data-transmission","display_name":"Data transmission","score":0.28360000252723694}],"concepts":[{"id":"https://openalex.org/C12713177","wikidata":"https://www.wikidata.org/wiki/Q1900281","display_name":"Perspective (graphical)","level":2,"score":0.6534000039100647},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6279000043869019},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.4880000054836273},{"id":"https://openalex.org/C761482","wikidata":"https://www.wikidata.org/wiki/Q118093","display_name":"Transmission (telecommunications)","level":2,"score":0.42179998755455017},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.4180000126361847},{"id":"https://openalex.org/C108037233","wikidata":"https://www.wikidata.org/wiki/Q11375","display_name":"Wireless network","level":3,"score":0.32670000195503235},{"id":"https://openalex.org/C557945733","wikidata":"https://www.wikidata.org/wiki/Q389772","display_name":"Data transmission","level":2,"score":0.28360000252723694},{"id":"https://openalex.org/C2986910011","wikidata":"https://www.wikidata.org/wiki/Q17517","display_name":"Cellular radio","level":3,"score":0.28130000829696655},{"id":"https://openalex.org/C26517878","wikidata":"https://www.wikidata.org/wiki/Q228039","display_name":"Key (lock)","level":2,"score":0.2754000127315521},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.27129998803138733},{"id":"https://openalex.org/C120314980","wikidata":"https://www.wikidata.org/wiki/Q180634","display_name":"Distributed computing","level":1,"score":0.25839999318122864},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.25049999356269836}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/ojcoms.2026.3712231","is_oa":true,"landing_page_url":"https://doi.org/10.1109/ojcoms.2026.3712231","pdf_url":null,"source":{"id":"https://openalex.org/S4210202420","display_name":"IEEE Open Journal of the Communications Society","issn_l":"2644-125X","issn":["2644-125X"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310316002","host_organization_name":"IEEE Communications Society","host_organization_lineage":["https://openalex.org/P4310316002","https://openalex.org/P4310319808"],"host_organization_lineage_names":["IEEE Communications Society","Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Open Journal of the Communications Society","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:533582fbc308451ea31ddb30b2ada2ce","is_oa":false,"landing_page_url":"https://doaj.org/article/533582fbc308451ea31ddb30b2ada2ce","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"IEEE Open Journal of the Communications Society, Vol 7, Pp 7921-7939 (2026)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.1109/ojcoms.2026.3712231","is_oa":true,"landing_page_url":"https://doi.org/10.1109/ojcoms.2026.3712231","pdf_url":null,"source":{"id":"https://openalex.org/S4210202420","display_name":"IEEE Open Journal of the Communications Society","issn_l":"2644-125X","issn":["2644-125X"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310316002","host_organization_name":"IEEE Communications Society","host_organization_lineage":["https://openalex.org/P4310316002","https://openalex.org/P4310319808"],"host_organization_lineage_names":["IEEE Communications Society","Institute of Electrical and Electronics Engineers"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Open Journal of the Communications Society","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":[],"abstract_inverted_index":{"This":[0],"study":[1],"presents":[2],"a":[3,46,62,68,81,101,112,118,148],"generalized":[4],"design":[5,85,150,196],"framework":[6],"for":[7,53],"beyond-diagonal":[8],"reconfigurable":[9],"intelligent":[10],"surface":[11],"(BD-RIS)-based":[12],"multiuser":[13,38],"wireless":[14],"transmitters":[15,127],"capable":[16],"of":[17,117,139,173,186],"serving":[18],"multiple":[19,54,74],"users":[20,76],"simultaneously":[21],"via":[22],"spatial":[23],"beamforming.":[24],"The":[25],"proposed":[26,175],"system":[27],"provides":[28],"an":[29],"energy-efficient":[30],"alternative":[31],"to":[32,105,156],"conventional":[33,102,140],"multi-antenna":[34,141],"transmitters,":[35],"as":[36],"both":[37,92],"data":[39],"modulation":[40,161],"and":[41,58,78,94,130,160,182,191],"beamforming":[42,120,159,180],"are":[43,133],"implemented":[44],"through":[45],"passive":[47],"BD-RIS,":[48],"thereby":[49],"eliminating":[50],"the":[51,154,170,174,184],"need":[52],"active":[55],"RF":[56],"chains":[57],"antenna":[59],"arrays.":[60],"As":[61],"baseline":[63],"design,":[64],"we":[65,146],"first":[66],"propose":[67],"partitioned":[69],"RIS-based":[70],"transmitter":[71],"that":[72,86,100,138,152],"serves":[73],"downlink":[75],"independently,":[77],"subsequently":[79],"introduce":[80],"more":[82],"general":[83],"non-partitioned":[84],"achieves":[87],"markedly":[88],"improved":[89],"performance":[90,136,172,200],"under":[91,177,201],"correlated":[93],"uncorrelated":[95],"user":[96],"channels.":[97],"We":[98],"show":[99],"diagonal-RIS,":[103],"due":[104],"its":[106],"architectural":[107],"constraints,":[108],"can":[109],"realize":[110,157],"only":[111],"row-wise":[113],"non-uniformly":[114],"scaled":[115],"version":[116],"desired":[119],"matrix.":[121],"To":[122],"address":[123],"this":[124,144],"limitation,":[125],"BD-RIS-based":[126],"employing":[128],"group-":[129],"fully-connected":[131],"architectures":[132],"proposed,":[134],"whose":[135],"approaches":[137],"transmitters.":[142],"In":[143],"context,":[145],"develop":[147],"scattering-matrix":[149],"algorithm":[151],"configures":[153],"BD-RIS":[155,187],"arbitrary":[158],"across":[162],"all":[163],"considered":[164],"architectures.":[165],"Extensive":[166],"computer":[167],"simulations":[168],"evaluate":[169],"error":[171,199],"designs":[176],"various":[178],"channel-aware":[179],"schemes":[181],"examine":[183],"impact":[185],"architecture,":[188],"RIS":[189],"size,":[190,193],"group":[192],"providing":[194],"practical":[195],"insights.":[197],"Theoretical":[198],"Rayleigh":[202],"fading":[203],"is":[204],"also":[205],"analyzed.":[206]},"counts_by_year":[],"updated_date":"2026-07-20T07:56:41.581041","created_date":"2026-07-11T00:00:00"}