{"id":"https://openalex.org/W4409058078","doi":"https://doi.org/10.1109/tcomm.2025.3556779","title":"RIS-Aided MIMO Beamforming: Piecewise Near-Field Channel Model","display_name":"RIS-Aided MIMO Beamforming: Piecewise Near-Field Channel Model","publication_year":2025,"publication_date":"2025-04-01","ids":{"openalex":"https://openalex.org/W4409058078","doi":"https://doi.org/10.1109/tcomm.2025.3556779"},"language":"en","primary_location":{"id":"doi:10.1109/tcomm.2025.3556779","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tcomm.2025.3556779","pdf_url":null,"source":{"id":"https://openalex.org/S196647941","display_name":"IEEE Transactions on Communications","issn_l":"0090-6778","issn":["0090-6778","1558-0857"],"is_oa":false,"is_in_doaj":false,"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":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Communications","raw_type":"journal-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://pureadmin.qub.ac.uk/ws/files/634217404/RIS-aided_MIMO_Beamforming_Piecewise_Near-field_Channel_Model.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5113036769","display_name":"Wanzhong Chen","orcid":"https://orcid.org/0000-0003-3001-8618"},"institutions":[{"id":"https://openalex.org/I87445476","display_name":"Xi'an Jiaotong University","ror":"https://ror.org/017zhmm22","country_code":"CN","type":"education","lineage":["https://openalex.org/I87445476"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Weijian Chen","raw_affiliation_strings":["School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, China"],"raw_orcid":"https://orcid.org/0000-0003-3001-8618","affiliations":[{"raw_affiliation_string":"School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, China","institution_ids":["https://openalex.org/I87445476"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5082539585","display_name":"Zai Yang","orcid":"https://orcid.org/0000-0002-9502-5176"},"institutions":[{"id":"https://openalex.org/I87445476","display_name":"Xi'an Jiaotong University","ror":"https://ror.org/017zhmm22","country_code":"CN","type":"education","lineage":["https://openalex.org/I87445476"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zai Yang","raw_affiliation_strings":["School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, China"],"raw_orcid":"https://orcid.org/0000-0002-9502-5176","affiliations":[{"raw_affiliation_string":"School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, China","institution_ids":["https://openalex.org/I87445476"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5074077175","display_name":"Zhiqiang Wei","orcid":"https://orcid.org/0000-0003-3400-5590"},"institutions":[{"id":"https://openalex.org/I87445476","display_name":"Xi'an Jiaotong University","ror":"https://ror.org/017zhmm22","country_code":"CN","type":"education","lineage":["https://openalex.org/I87445476"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zhiqiang Wei","raw_affiliation_strings":["School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, China"],"raw_orcid":"https://orcid.org/0000-0003-3400-5590","affiliations":[{"raw_affiliation_string":"School of Mathematics and Statistics, Xi’an Jiaotong University, Xi’an, China","institution_ids":["https://openalex.org/I87445476"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5006080984","display_name":"Derrick Wing Kwan Ng","orcid":"https://orcid.org/0000-0001-6400-712X"},"institutions":[{"id":"https://openalex.org/I31746571","display_name":"UNSW Sydney","ror":"https://ror.org/03r8z3t63","country_code":"AU","type":"education","lineage":["https://openalex.org/I31746571"]}],"countries":["AU"],"is_corresponding":false,"raw_author_name":"Derrick Wing Kwan Ng","raw_affiliation_strings":["School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, NSW, Australia","School of Electrical Engineering and Telecommunications, University of New South Wales, Australia"],"raw_orcid":"https://orcid.org/0000-0001-6400-712X","affiliations":[{"raw_affiliation_string":"School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, NSW, Australia","institution_ids":["https://openalex.org/I31746571"]},{"raw_affiliation_string":"School of Electrical Engineering and Telecommunications, University of New South Wales, Australia","institution_ids":["https://openalex.org/I31746571"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5035876091","display_name":"Michail Matthaiou","orcid":"https://orcid.org/0000-0001-9235-7741"},"institutions":[{"id":"https://openalex.org/I126231945","display_name":"Queen's University Belfast","ror":"https://ror.org/00hswnk62","country_code":"GB","type":"education","lineage":["https://openalex.org/I126231945"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Michail Matthaiou","raw_affiliation_strings":["Centre for Wireless Innovation (CWI), Queen’s University Belfast, Belfast, U.K"],"raw_orcid":"https://orcid.org/0000-0001-9235-7741","affiliations":[{"raw_affiliation_string":"Centre for Wireless Innovation (CWI), Queen’s University Belfast, Belfast, U.K","institution_ids":["https://openalex.org/I126231945"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.5289,"has_fulltext":true,"cited_by_count":5,"citation_normalized_percentile":{"value":0.81269642,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":95,"max":99},"biblio":{"volume":"73","issue":"10","first_page":"9612","last_page":"9626"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"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"}},"topics":[{"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/T10069","display_name":"Antenna Design and Analysis","score":0.9994999766349792,"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/T11392","display_name":"Energy Harvesting in Wireless Networks","score":0.9987999796867371,"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/beamforming","display_name":"Beamforming","score":0.7880998849868774},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.6740142107009888},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.5533862709999084},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.5346065759658813},{"id":"https://openalex.org/keywords/piecewise","display_name":"Piecewise","score":0.5071735382080078},{"id":"https://openalex.org/keywords/precoding","display_name":"Precoding","score":0.4832359254360199},{"id":"https://openalex.org/keywords/field","display_name":"Field (mathematics)","score":0.45440763235092163},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.45095694065093994},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.3063061237335205},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.3055635690689087},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.21836742758750916}],"concepts":[{"id":"https://openalex.org/C54197355","wikidata":"https://www.wikidata.org/wiki/Q5782992","display_name":"Beamforming","level":2,"score":0.7880998849868774},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.6740142107009888},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.5533862709999084},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.5346065759658813},{"id":"https://openalex.org/C164660894","wikidata":"https://www.wikidata.org/wiki/Q2037833","display_name":"Piecewise","level":2,"score":0.5071735382080078},{"id":"https://openalex.org/C160562895","wikidata":"https://www.wikidata.org/wiki/Q7239557","display_name":"Precoding","level":4,"score":0.4832359254360199},{"id":"https://openalex.org/C9652623","wikidata":"https://www.wikidata.org/wiki/Q190109","display_name":"Field (mathematics)","level":2,"score":0.45440763235092163},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.45095694065093994},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.3063061237335205},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.3055635690689087},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.21836742758750916},{"id":"https://openalex.org/C202444582","wikidata":"https://www.wikidata.org/wiki/Q837863","display_name":"Pure mathematics","level":1,"score":0.0},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/tcomm.2025.3556779","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tcomm.2025.3556779","pdf_url":null,"source":{"id":"https://openalex.org/S196647941","display_name":"IEEE Transactions on Communications","issn_l":"0090-6778","issn":["0090-6778","1558-0857"],"is_oa":false,"is_in_doaj":false,"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":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEEE Transactions on Communications","raw_type":"journal-article"},{"id":"pmh:oai:pure.qub.ac.uk/portal:publications/75a949d3-294a-4b39-b623-82523a466ffa","is_oa":true,"landing_page_url":"https://pure.qub.ac.uk/en/publications/75a949d3-294a-4b39-b623-82523a466ffa","pdf_url":"https://pureadmin.qub.ac.uk/ws/files/634217404/RIS-aided_MIMO_Beamforming_Piecewise_Near-field_Channel_Model.pdf","source":{"id":"https://openalex.org/S4306402319","display_name":"Research Portal (Queen's University Belfast)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I126231945","host_organization_name":"Queen's University Belfast","host_organization_lineage":["https://openalex.org/I126231945"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Chen, W, Yang, Z, Wei, Z, Ng, D W K & Matthaiou, M 2025, 'RIS-aided MIMO beamforming: Piecewise near-field channel model', IEEE Transactions on Communications. https://doi.org/10.1109/TCOMM.2025.3556779","raw_type":"info:eu-repo/semantics/article"}],"best_oa_location":{"id":"pmh:oai:pure.qub.ac.uk/portal:publications/75a949d3-294a-4b39-b623-82523a466ffa","is_oa":true,"landing_page_url":"https://pure.qub.ac.uk/en/publications/75a949d3-294a-4b39-b623-82523a466ffa","pdf_url":"https://pureadmin.qub.ac.uk/ws/files/634217404/RIS-aided_MIMO_Beamforming_Piecewise_Near-field_Channel_Model.pdf","source":{"id":"https://openalex.org/S4306402319","display_name":"Research Portal (Queen's University Belfast)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I126231945","host_organization_name":"Queen's University Belfast","host_organization_lineage":["https://openalex.org/I126231945"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Chen, W, Yang, Z, Wei, Z, Ng, D W K & Matthaiou, M 2025, 'RIS-aided MIMO beamforming: Piecewise near-field channel model', IEEE Transactions on Communications. https://doi.org/10.1109/TCOMM.2025.3556779","raw_type":"info:eu-repo/semantics/article"},"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/13","score":0.5099999904632568,"display_name":"Climate action"}],"awards":[{"id":"https://openalex.org/G1665880121","display_name":null,"funder_award_id":"2023YFA1008600","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G330146058","display_name":null,"funder_award_id":"12371464","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G4726732360","display_name":null,"funder_award_id":"2023YFA1008600","funder_id":"https://openalex.org/F4320335777","funder_display_name":"National Key Research and Development Program of China"},{"id":"https://openalex.org/G6607408773","display_name":null,"funder_award_id":"QCYRCXM-2023-094","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G6980551793","display_name":null,"funder_award_id":"QCYRCXM-2023-094","funder_id":"https://openalex.org/F4320335773","funder_display_name":"National High-tech Research and Development Program"},{"id":"https://openalex.org/G8518474155","display_name":null,"funder_award_id":"101001331","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G8607830349","display_name":null,"funder_award_id":"10.1109","funder_id":"https://openalex.org/F4320335777","funder_display_name":"National Key Research and Development Program of China"}],"funders":[{"id":"https://openalex.org/F4320320357","display_name":"Queen's University Belfast","ror":"https://ror.org/00hswnk62"},{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320321832","display_name":"Queen's University","ror":"https://ror.org/02y72wh86"},{"id":"https://openalex.org/F4320335773","display_name":"National High-tech Research and Development Program","ror":null},{"id":"https://openalex.org/F4320335777","display_name":"National Key Research and Development Program of China","ror":null}],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W4409058078.pdf","grobid_xml":"https://content.openalex.org/works/W4409058078.grobid-xml"},"referenced_works_count":61,"referenced_works":["https://openalex.org/W151604921","https://openalex.org/W269003556","https://openalex.org/W1970830346","https://openalex.org/W1974552031","https://openalex.org/W2037603831","https://openalex.org/W2053521124","https://openalex.org/W2082432933","https://openalex.org/W2120406684","https://openalex.org/W2145245010","https://openalex.org/W2339667469","https://openalex.org/W2548842562","https://openalex.org/W2968810373","https://openalex.org/W2978330116","https://openalex.org/W3006557588","https://openalex.org/W3021225717","https://openalex.org/W3021564798","https://openalex.org/W3032503733","https://openalex.org/W3034314469","https://openalex.org/W3034448035","https://openalex.org/W3035386068","https://openalex.org/W3039402952","https://openalex.org/W3043981101","https://openalex.org/W3091365446","https://openalex.org/W3122751454","https://openalex.org/W3131826124","https://openalex.org/W3137570378","https://openalex.org/W3146477712","https://openalex.org/W3148198191","https://openalex.org/W3178081691","https://openalex.org/W3179114624","https://openalex.org/W3180605299","https://openalex.org/W3184496427","https://openalex.org/W3199802483","https://openalex.org/W3201397934","https://openalex.org/W3204184545","https://openalex.org/W3208187232","https://openalex.org/W3211101652","https://openalex.org/W4225086786","https://openalex.org/W4226061238","https://openalex.org/W4226225813","https://openalex.org/W4250589301","https://openalex.org/W4285237044","https://openalex.org/W4292363360","https://openalex.org/W4297094903","https://openalex.org/W4312051188","https://openalex.org/W4313001863","https://openalex.org/W4317553583","https://openalex.org/W4322576544","https://openalex.org/W4323663079","https://openalex.org/W4360596735","https://openalex.org/W4361988597","https://openalex.org/W4385885073","https://openalex.org/W4391341574","https://openalex.org/W4391467942","https://openalex.org/W4391953421","https://openalex.org/W4394939036","https://openalex.org/W4399118807","https://openalex.org/W4401757918","https://openalex.org/W4402216133","https://openalex.org/W4402810597","https://openalex.org/W4403126058"],"related_works":["https://openalex.org/W2152088989","https://openalex.org/W2756419127","https://openalex.org/W4366493479","https://openalex.org/W2905893439","https://openalex.org/W3135374966","https://openalex.org/W2554517556","https://openalex.org/W2953205382","https://openalex.org/W1994906402","https://openalex.org/W2489379490","https://openalex.org/W2141031289"],"abstract_inverted_index":{"This":[0],"paper":[1],"proposes":[2],"a":[3,19,25,39,55,61,120,141,149,198],"joint":[4,121],"active":[5,122,158],"and":[6,97,108,123,148,159,183,204],"passive":[7,124,160],"beamforming":[8,125,161],"design":[9,46,126],"for":[10],"reconfigurable":[11],"intelligent":[12],"surface":[13],"(RIS)-aided":[14],"wireless":[15],"communication":[16],"systems,":[17],"adopting":[18,167],"piecewise":[20,62,95,169,194],"near-field":[21,27,63,72,96,170,182,195],"channel":[22,28,50,64,87,99,171],"model.":[23],"While":[24],"traditional":[26,91],"model,":[29,41],"applied":[30],"without":[31],"any":[32],"approximations,":[33],"offers":[34],"higher":[35],"modeling":[36,202],"accuracy":[37,203],"than":[38],"far-field":[40,98,184],"it":[42],"renders":[43],"the":[44,68,71,83,90,93,102,114,130,157,168,181,187,192],"system":[45],"more":[47],"sensitive":[48],"to":[49,59,128,154,174,179],"estimation":[51],"errors":[52],"(CEEs).":[53],"As":[54],"remedy,":[56],"we":[57,118],"propose":[58],"adopt":[60],"model":[65,109,172,196],"that":[66,166],"leverages":[67],"advantages":[69],"of":[70,85,189,207],"approach":[73],"while":[74],"enhancing":[75],"its":[76],"robustness":[77],"against":[78],"CEEs.":[79,190],"Our":[80],"study":[81],"analyzes":[82],"impact":[84],"different":[86],"models,":[88,100],"including":[89],"near-field,":[92],"proposed":[94,193],"on":[101],"interference":[103,115],"distribution":[104],"caused":[105],"by":[106,112],"CEEs":[107],"mismatches.":[110],"Subsequently,":[111],"treating":[113],"as":[116,140],"noise,":[117],"formulate":[119],"problem":[127,136,147],"maximize":[129],"spectral":[131],"efficiency":[132],"(SE).":[133],"The":[134],"formulated":[135],"is":[137,152],"then":[138],"recast":[139],"mean":[142],"squared":[143],"error":[144],"(MSE)":[145],"minimization":[146],"suboptimal":[150],"algorithm":[151],"developed":[153],"iteratively":[155],"update":[156],"strategies.":[162],"Simulation":[163],"results":[164],"demonstrate":[165],"leads":[173],"an":[175],"improved":[176],"SE":[177],"compared":[178],"both":[180],"models":[185],"in":[186],"presence":[188],"Furthermore,":[191],"achieves":[197],"good":[199],"trade-off":[200],"between":[201],"system\u2019s":[205],"degrees":[206],"freedom":[208],"(DoF).":[209]},"counts_by_year":[{"year":2026,"cited_by_count":3},{"year":2025,"cited_by_count":2}],"updated_date":"2026-08-01T09:00:35.917206","created_date":"2025-10-10T00:00:00"}