{"id":"https://openalex.org/W3158061244","doi":"https://doi.org/10.1109/twc.2022.3147825","title":"Practical Channel Estimation and Phase Shift Design for Intelligent Reflecting Surface Empowered MIMO Systems","display_name":"Practical Channel Estimation and Phase Shift Design for Intelligent Reflecting Surface Empowered MIMO Systems","publication_year":2022,"publication_date":"2022-02-08","ids":{"openalex":"https://openalex.org/W3158061244","doi":"https://doi.org/10.1109/twc.2022.3147825","mag":"3158061244"},"language":"en","primary_location":{"id":"doi:10.1109/twc.2022.3147825","is_oa":false,"landing_page_url":"https://doi.org/10.1109/twc.2022.3147825","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":["arxiv","crossref"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://arxiv.org/pdf/2104.14161","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5033378699","display_name":"Sucheol Kim","orcid":"https://orcid.org/0000-0002-3724-1364"},"institutions":[{"id":"https://openalex.org/I157485424","display_name":"Korea Advanced Institute of Science and Technology","ror":"https://ror.org/05apxxy63","country_code":"KR","type":"education","lineage":["https://openalex.org/I157485424"]},{"id":"https://openalex.org/I4210131320","display_name":"LG (South Korea)","ror":"https://ror.org/03ddh2c27","country_code":"KR","type":"company","lineage":["https://openalex.org/I4210131320"]}],"countries":["KR"],"is_corresponding":true,"raw_author_name":"Sucheol Kim","raw_affiliation_strings":["C&#x0026;M Standard Laboratory, Future Technology Center, LG Electronics Inc., Seoul, South Korea","School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea"],"affiliations":[{"raw_affiliation_string":"C&#x0026;M Standard Laboratory, Future Technology Center, LG Electronics Inc., Seoul, South Korea","institution_ids":["https://openalex.org/I4210131320"]},{"raw_affiliation_string":"School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea","institution_ids":["https://openalex.org/I157485424"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5077897109","display_name":"Hyeongtaek Lee","orcid":"https://orcid.org/0000-0002-8611-5196"},"institutions":[{"id":"https://openalex.org/I157485424","display_name":"Korea Advanced Institute of Science and Technology","ror":"https://ror.org/05apxxy63","country_code":"KR","type":"education","lineage":["https://openalex.org/I157485424"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Hyeongtaek Lee","raw_affiliation_strings":["School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea"],"affiliations":[{"raw_affiliation_string":"School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea","institution_ids":["https://openalex.org/I157485424"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5103044928","display_name":"Jihoon Cha","orcid":"https://orcid.org/0000-0003-2404-772X"},"institutions":[{"id":"https://openalex.org/I157485424","display_name":"Korea Advanced Institute of Science and Technology","ror":"https://ror.org/05apxxy63","country_code":"KR","type":"education","lineage":["https://openalex.org/I157485424"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Jihoon Cha","raw_affiliation_strings":["School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea"],"affiliations":[{"raw_affiliation_string":"School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea","institution_ids":["https://openalex.org/I157485424"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100368287","display_name":"Sung\u2010Jin Kim","orcid":"https://orcid.org/0000-0002-3131-4147"},"institutions":[{"id":"https://openalex.org/I157485424","display_name":"Korea Advanced Institute of Science and Technology","ror":"https://ror.org/05apxxy63","country_code":"KR","type":"education","lineage":["https://openalex.org/I157485424"]},{"id":"https://openalex.org/I4210131320","display_name":"LG (South Korea)","ror":"https://ror.org/03ddh2c27","country_code":"KR","type":"company","lineage":["https://openalex.org/I4210131320"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Sung-Jin Kim","raw_affiliation_strings":["C&#x0026;M Standard Laboratory, Future Technology Center, LG Electronics Inc., Seoul, South Korea","School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea"],"affiliations":[{"raw_affiliation_string":"C&#x0026;M Standard Laboratory, Future Technology Center, LG Electronics Inc., Seoul, South Korea","institution_ids":["https://openalex.org/I4210131320"]},{"raw_affiliation_string":"School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea","institution_ids":["https://openalex.org/I157485424"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100678258","display_name":"Jae-Yong Park","orcid":null},"institutions":[{"id":"https://openalex.org/I4210131320","display_name":"LG (South Korea)","ror":"https://ror.org/03ddh2c27","country_code":"KR","type":"company","lineage":["https://openalex.org/I4210131320"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Jaeyong Park","raw_affiliation_strings":["C&#x0026;M Standard Laboratory, Future Technology Center, LG Electronics Inc., Seoul, South Korea"],"affiliations":[{"raw_affiliation_string":"C&#x0026;M Standard Laboratory, Future Technology Center, LG Electronics Inc., Seoul, South Korea","institution_ids":["https://openalex.org/I4210131320"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5065248740","display_name":"Junil Choi","orcid":"https://orcid.org/0000-0002-9862-9020"},"institutions":[{"id":"https://openalex.org/I157485424","display_name":"Korea Advanced Institute of Science and Technology","ror":"https://ror.org/05apxxy63","country_code":"KR","type":"education","lineage":["https://openalex.org/I157485424"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Junil Choi","raw_affiliation_strings":["School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea"],"affiliations":[{"raw_affiliation_string":"School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea","institution_ids":["https://openalex.org/I157485424"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":6,"corresponding_author_ids":["https://openalex.org/A5033378699"],"corresponding_institution_ids":["https://openalex.org/I157485424","https://openalex.org/I4210131320"],"apc_list":null,"apc_paid":null,"fwci":3.9579,"has_fulltext":false,"cited_by_count":45,"citation_normalized_percentile":{"value":0.94331285,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":"21","issue":"8","first_page":"6226","last_page":"6241"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11458","display_name":"Advanced Wireless Communication Technologies","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"}},"topics":[{"id":"https://openalex.org/T11458","display_name":"Advanced Wireless Communication Technologies","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/T11383","display_name":"Advanced Antenna and Metasurface Technologies","score":0.9743000268936157,"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/T10069","display_name":"Antenna Design and Analysis","score":0.9567999839782715,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.8020236492156982},{"id":"https://openalex.org/keywords/overhead","display_name":"Overhead (engineering)","score":0.7858311533927917},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.7430655360221863},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7259862422943115},{"id":"https://openalex.org/keywords/spectral-efficiency","display_name":"Spectral efficiency","score":0.663436233997345},{"id":"https://openalex.org/keywords/path-loss","display_name":"Path loss","score":0.5073067545890808},{"id":"https://openalex.org/keywords/precoding","display_name":"Precoding","score":0.4593411386013031},{"id":"https://openalex.org/keywords/path","display_name":"Path (computing)","score":0.4272216856479645},{"id":"https://openalex.org/keywords/control-theory","display_name":"Control theory (sociology)","score":0.36133861541748047},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.339012086391449},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.29033809900283813},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.23377400636672974},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.20033007860183716},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.1464793086051941}],"concepts":[{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.8020236492156982},{"id":"https://openalex.org/C2779960059","wikidata":"https://www.wikidata.org/wiki/Q7113681","display_name":"Overhead (engineering)","level":2,"score":0.7858311533927917},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.7430655360221863},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7259862422943115},{"id":"https://openalex.org/C137246740","wikidata":"https://www.wikidata.org/wiki/Q583970","display_name":"Spectral efficiency","level":3,"score":0.663436233997345},{"id":"https://openalex.org/C194273485","wikidata":"https://www.wikidata.org/wiki/Q1478845","display_name":"Path loss","level":3,"score":0.5073067545890808},{"id":"https://openalex.org/C160562895","wikidata":"https://www.wikidata.org/wiki/Q7239557","display_name":"Precoding","level":4,"score":0.4593411386013031},{"id":"https://openalex.org/C2777735758","wikidata":"https://www.wikidata.org/wiki/Q817765","display_name":"Path (computing)","level":2,"score":0.4272216856479645},{"id":"https://openalex.org/C47446073","wikidata":"https://www.wikidata.org/wiki/Q5165890","display_name":"Control theory (sociology)","level":3,"score":0.36133861541748047},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.339012086391449},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.29033809900283813},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.23377400636672974},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.20033007860183716},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.1464793086051941},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0},{"id":"https://openalex.org/C2775924081","wikidata":"https://www.wikidata.org/wiki/Q55608371","display_name":"Control (management)","level":2,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/twc.2022.3147825","is_oa":false,"landing_page_url":"https://doi.org/10.1109/twc.2022.3147825","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"},{"id":"pmh:oai:arXiv.org:2104.14161","is_oa":true,"landing_page_url":"http://arxiv.org/abs/2104.14161","pdf_url":"https://arxiv.org/pdf/2104.14161","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"}],"best_oa_location":{"id":"pmh:oai:arXiv.org:2104.14161","is_oa":true,"landing_page_url":"http://arxiv.org/abs/2104.14161","pdf_url":"https://arxiv.org/pdf/2104.14161","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},"sustainable_development_goals":[{"score":0.4099999964237213,"id":"https://metadata.un.org/sdg/7","display_name":"Affordable and clean energy"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":36,"referenced_works":["https://openalex.org/W436010332","https://openalex.org/W2105264426","https://openalex.org/W2106929598","https://openalex.org/W2113271807","https://openalex.org/W2141682101","https://openalex.org/W2153072761","https://openalex.org/W2805166665","https://openalex.org/W2901450205","https://openalex.org/W2937693915","https://openalex.org/W2950077417","https://openalex.org/W2963121727","https://openalex.org/W2964045328","https://openalex.org/W2968810373","https://openalex.org/W2969577088","https://openalex.org/W2971912794","https://openalex.org/W2981792785","https://openalex.org/W2990747873","https://openalex.org/W3002205212","https://openalex.org/W3005112765","https://openalex.org/W3008356568","https://openalex.org/W3010695123","https://openalex.org/W3013719647","https://openalex.org/W3021564798","https://openalex.org/W3035217884","https://openalex.org/W3035386068","https://openalex.org/W3036185781","https://openalex.org/W3039402952","https://openalex.org/W3041653465","https://openalex.org/W3041952484","https://openalex.org/W3045793887","https://openalex.org/W3100218246","https://openalex.org/W3103991536","https://openalex.org/W3134746776","https://openalex.org/W3137708979","https://openalex.org/W4255261408","https://openalex.org/W6756281114"],"related_works":["https://openalex.org/W2489379490","https://openalex.org/W2141031289","https://openalex.org/W2134916061","https://openalex.org/W4214571564","https://openalex.org/W2155567810","https://openalex.org/W2344765023","https://openalex.org/W4381785485","https://openalex.org/W4205696264","https://openalex.org/W2684278524","https://openalex.org/W3010469571"],"abstract_inverted_index":{"In":[0],"this":[1],"paper,":[2,31],"channel":[3,25,34,79],"estimation":[4,26,59,80],"techniques":[5,27],"and":[6,36,81,115],"phase":[7,71,92,122],"shift":[8,93,123],"design":[9,94,124],"for":[10,78,90],"intelligent":[11],"reflecting":[12],"surface":[13],"(IRS)-empowered":[14],"single-user":[15],"multiple-input":[16],"multiple-output":[17],"(SU-MIMO)":[18],"systems":[19],"are":[20],"proposed.":[21],"The":[22],"two":[23],"novel":[24],"proposed":[28,120],"in":[29],"the":[30,103,119],"single-path":[32,66],"approximated":[33],"(SPAC)":[35],"selective":[37],"emphasis":[38],"on":[39,57],"rank-one":[40],"matrices":[41],"(SEROM),":[42],"have":[43],"low":[44,131],"training":[45,76,85,132],"overhead":[46,133],"to":[47,98,135],"enable":[48],"practical":[49],"IRS-empowered":[50],"SU-MIMO":[51],"systems.":[52],"SPAC":[53,114],"is":[54,95],"mainly":[55],"based":[56],"parameter":[58],"by":[60],"approximating":[61],"IRS-related":[62],"channels":[63],"as":[64,73,75],"dominant":[65],"channels.":[67],"SEROM":[68,116],"exploits":[69],"IRS":[70,91,121],"shifts":[72],"well":[74],"signals":[77],"easily":[82],"adjusts":[83],"its":[84],"overhead.":[86],"A":[87],"closed-form":[88],"solution":[89,104],"also":[96],"developed":[97],"maximize":[99],"spectral":[100,127],"efficiency":[101,128],"where":[102],"only":[105],"requires":[106],"basic":[107],"linear":[108],"operations.":[109],"Numerical":[110],"results":[111],"show":[112],"that":[113],"combined":[117],"with":[118,130],"achieve":[125],"high":[126],"even":[129],"compared":[134],"existing":[136],"methods.":[137]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":9},{"year":2024,"cited_by_count":10},{"year":2023,"cited_by_count":14},{"year":2022,"cited_by_count":10},{"year":2021,"cited_by_count":1}],"updated_date":"2026-03-27T05:58:40.876381","created_date":"2025-10-10T00:00:00"}
