{"id":"https://openalex.org/W4376481253","doi":"https://doi.org/10.1109/jsac.2023.3275616","title":"Multiple Access for Near-Field Communications: SDMA or LDMA?","display_name":"Multiple Access for Near-Field Communications: SDMA or LDMA?","publication_year":2023,"publication_date":"2023-05-12","ids":{"openalex":"https://openalex.org/W4376481253","doi":"https://doi.org/10.1109/jsac.2023.3275616"},"language":"en","primary_location":{"id":"doi:10.1109/jsac.2023.3275616","is_oa":false,"landing_page_url":"https://doi.org/10.1109/jsac.2023.3275616","pdf_url":null,"source":{"id":"https://openalex.org/S90422530","display_name":"IEEE Journal on Selected Areas in Communications","issn_l":"0733-8716","issn":["0733-8716","1558-0008"],"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 Journal on Selected Areas in 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/A5064564977","display_name":"Zidong Wu","orcid":"https://orcid.org/0000-0001-7126-0924"},"institutions":[{"id":"https://openalex.org/I4210156423","display_name":"National Engineering Research Center for Information Technology in Agriculture","ror":"https://ror.org/04c3j3t84","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210156423"]},{"id":"https://openalex.org/I99065089","display_name":"Tsinghua University","ror":"https://ror.org/03cve4549","country_code":"CN","type":"education","lineage":["https://openalex.org/I99065089"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zidong Wu","raw_affiliation_strings":["Department of Electronic Engineering, Tsinghua University, Beijing, China","Beijing National Research Center for Information Science and Technology (BNRist), Beijing, China"],"raw_orcid":"https://orcid.org/0000-0001-7126-0924","affiliations":[{"raw_affiliation_string":"Department of Electronic Engineering, Tsinghua University, Beijing, China","institution_ids":["https://openalex.org/I99065089"]},{"raw_affiliation_string":"Beijing National Research Center for Information Science and Technology (BNRist), Beijing, China","institution_ids":["https://openalex.org/I4210156423"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5081869164","display_name":"Linglong Dai","orcid":"https://orcid.org/0000-0002-4250-7315"},"institutions":[{"id":"https://openalex.org/I4210156423","display_name":"National Engineering Research Center for Information Technology in Agriculture","ror":"https://ror.org/04c3j3t84","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210156423"]},{"id":"https://openalex.org/I99065089","display_name":"Tsinghua University","ror":"https://ror.org/03cve4549","country_code":"CN","type":"education","lineage":["https://openalex.org/I99065089"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Linglong Dai","raw_affiliation_strings":["Department of Electronic Engineering, Tsinghua University, Beijing, China","Beijing National Research Center for Information Science and Technology (BNRist), Beijing, China"],"raw_orcid":"https://orcid.org/0000-0002-4250-7315","affiliations":[{"raw_affiliation_string":"Department of Electronic Engineering, Tsinghua University, Beijing, China","institution_ids":["https://openalex.org/I99065089"]},{"raw_affiliation_string":"Beijing National Research Center for Information Science and Technology (BNRist), Beijing, China","institution_ids":["https://openalex.org/I4210156423"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":157.6653,"has_fulltext":false,"cited_by_count":233,"citation_normalized_percentile":{"value":0.99988142,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":100},"biblio":{"volume":"41","issue":"6","first_page":"1918","last_page":"1935"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10069","display_name":"Antenna Design and Analysis","score":0.9998999834060669,"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":0.9998999834060669,"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":0.9998999834060669,"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":0.9998000264167786,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/codebook","display_name":"Codebook","score":0.768075168132782},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7296292781829834},{"id":"https://openalex.org/keywords/precoding","display_name":"Precoding","score":0.7021703720092773},{"id":"https://openalex.org/keywords/space-division-multiple-access","display_name":"Space-division multiple access","score":0.6457144021987915},{"id":"https://openalex.org/keywords/orthogonality","display_name":"Orthogonality","score":0.554485559463501},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.5438284873962402},{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.4803099036216736},{"id":"https://openalex.org/keywords/spectral-efficiency","display_name":"Spectral efficiency","score":0.46214139461517334},{"id":"https://openalex.org/keywords/topology","display_name":"Topology (electrical circuits)","score":0.42115142941474915},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.34530943632125854},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.32623642683029175},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.29971176385879517},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.2344176173210144},{"id":"https://openalex.org/keywords/beamforming","display_name":"Beamforming","score":0.1975821554660797},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.07578706741333008}],"concepts":[{"id":"https://openalex.org/C127759330","wikidata":"https://www.wikidata.org/wiki/Q637416","display_name":"Codebook","level":2,"score":0.768075168132782},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7296292781829834},{"id":"https://openalex.org/C160562895","wikidata":"https://www.wikidata.org/wiki/Q7239557","display_name":"Precoding","level":4,"score":0.7021703720092773},{"id":"https://openalex.org/C2778140939","wikidata":"https://www.wikidata.org/wiki/Q3494197","display_name":"Space-division multiple access","level":3,"score":0.6457144021987915},{"id":"https://openalex.org/C17137986","wikidata":"https://www.wikidata.org/wiki/Q215067","display_name":"Orthogonality","level":2,"score":0.554485559463501},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.5438284873962402},{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.4803099036216736},{"id":"https://openalex.org/C137246740","wikidata":"https://www.wikidata.org/wiki/Q583970","display_name":"Spectral efficiency","level":3,"score":0.46214139461517334},{"id":"https://openalex.org/C184720557","wikidata":"https://www.wikidata.org/wiki/Q7825049","display_name":"Topology (electrical circuits)","level":2,"score":0.42115142941474915},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.34530943632125854},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.32623642683029175},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.29971176385879517},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.2344176173210144},{"id":"https://openalex.org/C54197355","wikidata":"https://www.wikidata.org/wiki/Q5782992","display_name":"Beamforming","level":2,"score":0.1975821554660797},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.07578706741333008},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/jsac.2023.3275616","is_oa":false,"landing_page_url":"https://doi.org/10.1109/jsac.2023.3275616","pdf_url":null,"source":{"id":"https://openalex.org/S90422530","display_name":"IEEE Journal on Selected Areas in Communications","issn_l":"0733-8716","issn":["0733-8716","1558-0008"],"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 Journal on Selected Areas in Communications","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Affordable and clean energy","score":0.7300000190734863,"id":"https://metadata.un.org/sdg/7"}],"awards":[{"id":"https://openalex.org/G3561954627","display_name":null,"funder_award_id":"2020YFB1807201","funder_id":"https://openalex.org/F4320335777","funder_display_name":"National Key Research and Development Program of China"},{"id":"https://openalex.org/G4342279984","display_name":null,"funder_award_id":"62031019","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G5830315594","display_name":"Future Wireless Communications Empowered by Reconfigurable Intelligent Meta-Materials (META WIRELESS)","funder_award_id":"956256","funder_id":"https://openalex.org/F4320320300","funder_display_name":"European Commission"}],"funders":[{"id":"https://openalex.org/F4320320300","display_name":"European Commission","ror":"https://ror.org/00k4n6c32"},{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320335777","display_name":"National Key Research and Development Program of China","ror":null}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":53,"referenced_works":["https://openalex.org/W1432778544","https://openalex.org/W1956027752","https://openalex.org/W1970830346","https://openalex.org/W1994165713","https://openalex.org/W2001715686","https://openalex.org/W2013073424","https://openalex.org/W2023535408","https://openalex.org/W2053521124","https://openalex.org/W2074863717","https://openalex.org/W2084304524","https://openalex.org/W2099647334","https://openalex.org/W2120898255","https://openalex.org/W2128513990","https://openalex.org/W2134973600","https://openalex.org/W2141682101","https://openalex.org/W2145720856","https://openalex.org/W2147601077","https://openalex.org/W2259391824","https://openalex.org/W2272804037","https://openalex.org/W2336403911","https://openalex.org/W2343448572","https://openalex.org/W2595628249","https://openalex.org/W2599953983","https://openalex.org/W2610350904","https://openalex.org/W2611749634","https://openalex.org/W2622044750","https://openalex.org/W2796047239","https://openalex.org/W2920856460","https://openalex.org/W2952066149","https://openalex.org/W2964218543","https://openalex.org/W2979317621","https://openalex.org/W2997786076","https://openalex.org/W3009902505","https://openalex.org/W3091752016","https://openalex.org/W3099908750","https://openalex.org/W3105281589","https://openalex.org/W3164550829","https://openalex.org/W3167779900","https://openalex.org/W3173000966","https://openalex.org/W3193637561","https://openalex.org/W3195782427","https://openalex.org/W3201151435","https://openalex.org/W3208187232","https://openalex.org/W4226370247","https://openalex.org/W4286969151","https://openalex.org/W4293095046","https://openalex.org/W4297094903","https://openalex.org/W4311414687","https://openalex.org/W4313026830","https://openalex.org/W4389542425","https://openalex.org/W6774773516","https://openalex.org/W6840343266","https://openalex.org/W6843543120"],"related_works":["https://openalex.org/W2392575683","https://openalex.org/W2123156148","https://openalex.org/W2014264654","https://openalex.org/W2374303155","https://openalex.org/W3118484777","https://openalex.org/W2000036084","https://openalex.org/W4214571564","https://openalex.org/W2292475936","https://openalex.org/W1484122664","https://openalex.org/W2070043757"],"abstract_inverted_index":{"Spatial":[0],"division":[1,88],"multiple":[2,39,89],"access":[3,90],"(SDMA)":[4],"is":[5,108,147,155,217],"essential":[6],"to":[7,37,46,92,97,109,118,157,179,219],"improve":[8],"the":[9,30,34,52,56,62,72,76,84,115,131,135,144,190,199,205,209,222,231,240,243],"spectrum":[10,99,184,225],"efficiency":[11,100,185,226],"for":[12,21,183,195],"multi-user":[13],"multiple-input":[14],"multiple-output":[15],"(MIMO)":[16],"communications.":[17],"The":[18,105],"classical":[19,103],"SDMA":[20,247],"massive":[22],"MIMO":[23],"with":[24,102,163,198,230],"hybrid":[25,177],"precoding":[26,178],"heavily":[27],"relies":[28],"on":[29,160],"angular":[31],"orthogonality":[32,137],"in":[33,51,71,75,114,130,143,176,208,248],"far":[35],"field":[36],"distinguish":[38],"users":[40,121],"at":[41,122,167],"different":[42,120,123,249],"angles,":[43],"which":[44,149,203],"fails":[45],"fully":[47],"exploit":[48,110],"spatial":[49,112],"resources":[50,113],"distance":[53,73,116,145,210],"domain.":[54,211],"With":[55],"dramatically":[57],"increasing":[58,232],"number":[59,233],"of":[60,86,138,215,234,242],"antennas,":[61],"extremely":[63],"large-scale":[64],"antenna":[65],"array":[66],"(ELAA)":[67],"introduces":[68],"additional":[69],"resolution":[70],"domain":[74,117,146],"near":[77,132],"field.":[78,133],"In":[79],"this":[80],"paper,":[81],"we":[82,188],"propose":[83],"concept":[85],"location":[87],"(LDMA)":[91],"provide":[93,189],"a":[94],"new":[95],"possibility":[96],"enhance":[98],"compared":[101],"SDMA.":[104],"key":[106],"idea":[107],"extra":[111],"serve":[119],"locations":[124,162],"(determined":[125],"by":[126],"angles":[127],"and":[128],"distances)":[129],"Specifically,":[134],"asymptotic":[136,223],"near-field":[139,152],"beam":[140,153],"focusing":[141,154],"vectors":[142],"proved,":[148],"reveals":[150],"that":[151,221],"able":[156],"focus":[158],"signals":[159],"specific":[161],"limited":[164],"leakage":[165],"energy":[166],"other":[168],"locations.":[169],"This":[170],"special":[171],"property":[172],"could":[173,227],"be":[174,228],"leveraged":[175],"mitigate":[180],"inter-user":[181],"interferences":[182],"enhancement.":[186],"Moreover,":[187],"spherical-domain":[191],"codebook":[192],"design":[193],"method":[194,207],"LDMA":[196,216,245],"communications":[197],"uniform":[200],"planar":[201],"array,":[202],"provides":[204],"sampling":[206],"Additionally,":[212],"performance":[213],"analysis":[214],"provided":[218],"reveal":[220],"optimal":[224],"achieved":[229],"antennas.":[235],"Finally,":[236],"simulation":[237],"results":[238],"verify":[239],"superiority":[241],"proposed":[244],"over":[246],"scenarios.":[250]},"counts_by_year":[{"year":2026,"cited_by_count":21},{"year":2025,"cited_by_count":99},{"year":2024,"cited_by_count":86},{"year":2023,"cited_by_count":25},{"year":2022,"cited_by_count":1}],"updated_date":"2026-08-08T01:25:22.217667","created_date":"2025-10-10T00:00:00"}
