{"id":"https://openalex.org/W4408565324","doi":"https://doi.org/10.1109/tvt.2025.3552493","title":"Joint Precoding and Reflection Optimization for IRS-Assisted MU-MIMO-OTFS Downlink Systems","display_name":"Joint Precoding and Reflection Optimization for IRS-Assisted MU-MIMO-OTFS Downlink Systems","publication_year":2025,"publication_date":"2025-03-18","ids":{"openalex":"https://openalex.org/W4408565324","doi":"https://doi.org/10.1109/tvt.2025.3552493"},"language":"en","primary_location":{"id":"doi:10.1109/tvt.2025.3552493","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tvt.2025.3552493","pdf_url":null,"source":{"id":"https://openalex.org/S10936095","display_name":"IEEE Transactions on Vehicular Technology","issn_l":"0018-9545","issn":["0018-9545","1939-9359"],"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 Vehicular Technology","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/A5079824924","display_name":"Tingting Zou","orcid":"https://orcid.org/0000-0002-2899-6685"},"institutions":[{"id":"https://openalex.org/I139759216","display_name":"Beijing University of Posts and Telecommunications","ror":"https://ror.org/04w9fbh59","country_code":"CN","type":"education","lineage":["https://openalex.org/I139759216"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Tingting Zou","raw_affiliation_strings":["State Key Laboratory of Network and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, China"],"raw_orcid":"https://orcid.org/0000-0002-2899-6685","affiliations":[{"raw_affiliation_string":"State Key Laboratory of Network and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, China","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5080094775","display_name":"Fengyu Wang","orcid":"https://orcid.org/0000-0002-5485-9414"},"institutions":[{"id":"https://openalex.org/I139759216","display_name":"Beijing University of Posts and Telecommunications","ror":"https://ror.org/04w9fbh59","country_code":"CN","type":"education","lineage":["https://openalex.org/I139759216"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Fengyu Wang","raw_affiliation_strings":["School of Artificial Intelligence, Beijing University of Posts and Telecommunications, Beijing, China"],"raw_orcid":"https://orcid.org/0000-0002-5485-9414","affiliations":[{"raw_affiliation_string":"School of Artificial Intelligence, Beijing University of Posts and Telecommunications, Beijing, China","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5059494893","display_name":"Wenjun Xu","orcid":"https://orcid.org/0000-0001-8767-4742"},"institutions":[{"id":"https://openalex.org/I139759216","display_name":"Beijing University of Posts and Telecommunications","ror":"https://ror.org/04w9fbh59","country_code":"CN","type":"education","lineage":["https://openalex.org/I139759216"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Wenjun Xu","raw_affiliation_strings":["State Key Laboratory of Network and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, China"],"raw_orcid":"https://orcid.org/0000-0001-8767-4742","affiliations":[{"raw_affiliation_string":"State Key Laboratory of Network and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, China","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5000374223","display_name":"Yimeng Zhang","orcid":"https://orcid.org/0000-0001-7259-5531"},"institutions":[{"id":"https://openalex.org/I139759216","display_name":"Beijing University of Posts and Telecommunications","ror":"https://ror.org/04w9fbh59","country_code":"CN","type":"education","lineage":["https://openalex.org/I139759216"]},{"id":"https://openalex.org/I180662265","display_name":"China Mobile (China)","ror":"https://ror.org/05gftfe97","country_code":"CN","type":"company","lineage":["https://openalex.org/I180662265"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yimeng Zhang","raw_affiliation_strings":["State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, China","State Key Laboratory of Networking and Switching Technology, China Mobile Research Institute, Beijing University of Posts and Telecommunications, Beijing, China"],"raw_orcid":"https://orcid.org/0000-0001-7259-5531","affiliations":[{"raw_affiliation_string":"State Key Laboratory of Networking and Switching Technology, Beijing University of Posts and Telecommunications, Beijing, China","institution_ids":["https://openalex.org/I139759216"]},{"raw_affiliation_string":"State Key Laboratory of Networking and Switching Technology, China Mobile Research Institute, Beijing University of Posts and Telecommunications, Beijing, China","institution_ids":["https://openalex.org/I139759216","https://openalex.org/I180662265"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5047722991","display_name":"Miao Pan","orcid":"https://orcid.org/0000-0003-2138-4413"},"institutions":[{"id":"https://openalex.org/I44461941","display_name":"University of Houston","ror":"https://ror.org/048sx0r50","country_code":"US","type":"education","lineage":["https://openalex.org/I44461941"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Miao Pan","raw_affiliation_strings":["Department of Electrical and Computer Engineering, University of Houston, Houston, TX, USA"],"raw_orcid":"https://orcid.org/0000-0003-2138-4413","affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of Houston, Houston, TX, USA","institution_ids":["https://openalex.org/I44461941"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5063667378","display_name":"Zhu Han","orcid":"https://orcid.org/0000-0002-6606-5822"},"institutions":[{"id":"https://openalex.org/I44461941","display_name":"University of Houston","ror":"https://ror.org/048sx0r50","country_code":"US","type":"education","lineage":["https://openalex.org/I44461941"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Zhu Han","raw_affiliation_strings":["Department of Electrical and Computer Engineering, University of Houston, Houston, TX, USA"],"raw_orcid":"https://orcid.org/0000-0002-6606-5822","affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of Houston, Houston, TX, USA","institution_ids":["https://openalex.org/I44461941"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.9253,"has_fulltext":false,"cited_by_count":2,"citation_normalized_percentile":{"value":0.73374022,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":95,"max":96},"biblio":{"volume":"74","issue":"8","first_page":"12347","last_page":"12363"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11873","display_name":"PAPR reduction in OFDM","score":0.9957000017166138,"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/T11873","display_name":"PAPR reduction in OFDM","score":0.9957000017166138,"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/T13905","display_name":"Telecommunications and Broadcasting Technologies","score":0.9650999903678894,"subfield":{"id":"https://openalex.org/subfields/2214","display_name":"Media Technology"},"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/T12146","display_name":"Power Line Communications and Noise","score":0.9485999941825867,"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/precoding","display_name":"Precoding","score":0.8889020681381226},{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.8128348588943481},{"id":"https://openalex.org/keywords/joint","display_name":"Joint (building)","score":0.7142212390899658},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.6317393779754639},{"id":"https://openalex.org/keywords/reflection","display_name":"Reflection (computer programming)","score":0.5666790008544922},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.4836955666542053},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.4663250744342804},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.3293009400367737},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.3156113624572754},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.11501458287239075}],"concepts":[{"id":"https://openalex.org/C160562895","wikidata":"https://www.wikidata.org/wiki/Q7239557","display_name":"Precoding","level":4,"score":0.8889020681381226},{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.8128348588943481},{"id":"https://openalex.org/C18555067","wikidata":"https://www.wikidata.org/wiki/Q8375051","display_name":"Joint (building)","level":2,"score":0.7142212390899658},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.6317393779754639},{"id":"https://openalex.org/C65682993","wikidata":"https://www.wikidata.org/wiki/Q1056451","display_name":"Reflection (computer programming)","level":2,"score":0.5666790008544922},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.4836955666542053},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.4663250744342804},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.3293009400367737},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.3156113624572754},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.11501458287239075},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0},{"id":"https://openalex.org/C170154142","wikidata":"https://www.wikidata.org/wiki/Q150737","display_name":"Architectural engineering","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/tvt.2025.3552493","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tvt.2025.3552493","pdf_url":null,"source":{"id":"https://openalex.org/S10936095","display_name":"IEEE Transactions on Vehicular Technology","issn_l":"0018-9545","issn":["0018-9545","1939-9359"],"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 Vehicular Technology","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G4861470501","display_name":null,"funder_award_id":"62301069","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G6757395791","display_name":null,"funder_award_id":"62293485","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320334789","display_name":"Japan Science and Technology Agency","ror":"https://ror.org/00097mb19"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":43,"referenced_works":["https://openalex.org/W151604921","https://openalex.org/W2163762663","https://openalex.org/W2612254130","https://openalex.org/W2946722229","https://openalex.org/W2950013137","https://openalex.org/W2950077417","https://openalex.org/W2962951066","https://openalex.org/W2963986627","https://openalex.org/W2964036333","https://openalex.org/W2964529439","https://openalex.org/W2978825329","https://openalex.org/W2990723501","https://openalex.org/W3005476696","https://openalex.org/W3006127356","https://openalex.org/W3034450003","https://openalex.org/W3038104762","https://openalex.org/W3043220753","https://openalex.org/W3044018623","https://openalex.org/W3047487223","https://openalex.org/W3096023787","https://openalex.org/W3099350037","https://openalex.org/W3110809189","https://openalex.org/W3135300342","https://openalex.org/W3153009871","https://openalex.org/W3178081691","https://openalex.org/W3179811880","https://openalex.org/W3188307653","https://openalex.org/W4205570856","https://openalex.org/W4210296632","https://openalex.org/W4210784465","https://openalex.org/W4213427015","https://openalex.org/W4285122253","https://openalex.org/W4292981572","https://openalex.org/W4294068696","https://openalex.org/W4312573917","https://openalex.org/W4312635972","https://openalex.org/W4312830106","https://openalex.org/W4312957855","https://openalex.org/W4321021117","https://openalex.org/W4367016761","https://openalex.org/W4388040506","https://openalex.org/W4390738577","https://openalex.org/W4396877707"],"related_works":["https://openalex.org/W2152088989","https://openalex.org/W2756419127","https://openalex.org/W4366493479","https://openalex.org/W2905893439","https://openalex.org/W2548963335","https://openalex.org/W3135374966","https://openalex.org/W2554517556","https://openalex.org/W3141240674","https://openalex.org/W2489379490","https://openalex.org/W2141031289"],"abstract_inverted_index":{"Orthogonal":[0],"time":[1],"frequency":[2],"space":[3],"(OTFS)":[4],"modulation":[5],"has":[6],"been":[7],"proposed":[8,178],"as":[9],"a":[10,25,55,104],"promising":[11],"technique":[12],"to":[13,42,76,166],"achieve":[14],"high-reliability":[15],"communications":[16],"in":[17,187],"high-mobility":[18],"scenarios.":[19],"In":[20],"this":[21,96],"paper,":[22],"we":[23,98,127],"consider":[24],"multi-user":[26],"(MU)":[27],"multiple-input":[28],"multiple-output":[29],"(MIMO)-OTFS":[30],"downlink":[31],"communication":[32],"scenario,":[33],"where":[34],"an":[35],"intelligent":[36],"reflecting":[37],"surface":[38],"(IRS)":[39],"is":[40,57,74,92],"deployed":[41],"enhance":[43],"the":[44,47,63,67,78,88,101,110,119,122,130,144,149,177,182],"performance.":[45],"Specifically,":[46],"delay-Doppler":[48],"(DD)":[49],"domain":[50,124],"input-output":[51],"relationship":[52],"of":[53,66,121],"such":[54],"system":[56],"first":[58,99],"derived,":[59],"based":[60],"on":[61],"which,":[62],"joint":[64],"optimization":[65,90,165],"precoding":[68,155],"matrices":[69,156],"and":[70,133,148,157],"IRS":[71],"reflection":[72,158],"phase":[73,159],"studied":[75],"maximize":[77,167],"weighted":[79,111],"sum":[80],"rate":[81,183],"(WSR)":[82],"considering":[83],"user":[84],"fairness.":[85],"Note":[86],"that":[87],"corresponding":[89],"problem":[91,102,132],"non-convex.":[93],"To":[94],"tackle":[95],"challenge,":[97],"reformulate":[100],"into":[103,137],"more":[105,184],"traceable":[106],"equivalent":[107],"form":[108],"by":[109,143,163],"mean":[112],"minimum":[113],"square":[114],"error":[115],"(WMMSE)":[116],"approach.":[117],"Utilizing":[118],"characteristics":[120],"DD":[123],"signal":[125],"relationship,":[126],"then":[128],"decouple":[129],"reformulated":[131],"further":[134],"transform":[135],"it":[136],"two":[138],"subproblems,":[139],"which":[140],"are":[141,160],"solved":[142],"Lagrangian":[145],"function":[146],"method":[147],"project-descent-retracting":[150],"(PDR)":[151],"algorithm,":[152],"respectively.":[153],"The":[154],"jointly":[161],"optimized":[162],"alternative":[164],"WSR.":[168],"Simulation":[169],"results":[170],"demonstrate":[171],"that,":[172],"compared":[173],"with":[174],"benchmark":[175],"schemes,":[176],"WMMSE-ALT":[179],"can":[180],"improve":[181],"than":[185],"85%":[186],"IRS-assisted":[188],"MU-MIMO-OTFS":[189],"systems.":[190]},"counts_by_year":[{"year":2025,"cited_by_count":2}],"updated_date":"2025-12-23T23:11:35.936235","created_date":"2025-10-10T00:00:00"}