{"id":"https://openalex.org/W4210600965","doi":"https://doi.org/10.1109/globecom46510.2021.9685542","title":"Near-Field Channel Estimation for Extremely Large-scale MIMO with Hybrid Precoding","display_name":"Near-Field Channel Estimation for Extremely Large-scale MIMO with Hybrid Precoding","publication_year":2021,"publication_date":"2021-12-01","ids":{"openalex":"https://openalex.org/W4210600965","doi":"https://doi.org/10.1109/globecom46510.2021.9685542"},"language":"en","primary_location":{"id":"doi:10.1109/globecom46510.2021.9685542","is_oa":false,"landing_page_url":"https://doi.org/10.1109/globecom46510.2021.9685542","pdf_url":null,"source":{"id":"https://openalex.org/S4363607714","display_name":"2021 IEEE Global Communications Conference (GLOBECOM)","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":"conference"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2021 IEEE Global Communications Conference (GLOBECOM)","raw_type":"proceedings-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/A5101708368","display_name":"Mingyao Cui","orcid":"https://orcid.org/0000-0002-5985-5877"},"institutions":[{"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":"Mingyao Cui","raw_affiliation_strings":["Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University,Department of Electronic Engineering,Beijing,China,100084"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University,Department of Electronic Engineering,Beijing,China,100084","institution_ids":["https://openalex.org/I99065089"]}]},{"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/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":["Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University,Department of Electronic Engineering,Beijing,China,100084"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University,Department of Electronic Engineering,Beijing,China,100084","institution_ids":["https://openalex.org/I99065089"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":9.1031,"has_fulltext":false,"cited_by_count":32,"citation_normalized_percentile":{"value":0.99315235,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":96,"max":99},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"6"},"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/T10936","display_name":"Millimeter-Wave Propagation and Modeling","score":0.9994000196456909,"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/T11392","display_name":"Energy Harvesting in Wireless Networks","score":0.9994000196456909,"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":0.9378949403762817},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.6851194500923157},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.6449353694915771},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6384124755859375},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.5508317947387695},{"id":"https://openalex.org/keywords/domain","display_name":"Domain (mathematical analysis)","score":0.4903252422809601},{"id":"https://openalex.org/keywords/field","display_name":"Field (mathematics)","score":0.4257062077522278},{"id":"https://openalex.org/keywords/control-theory","display_name":"Control theory (sociology)","score":0.3314914107322693},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.2816191613674164},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.2135324776172638},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.13411292433738708}],"concepts":[{"id":"https://openalex.org/C160562895","wikidata":"https://www.wikidata.org/wiki/Q7239557","display_name":"Precoding","level":4,"score":0.9378949403762817},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.6851194500923157},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.6449353694915771},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6384124755859375},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.5508317947387695},{"id":"https://openalex.org/C36503486","wikidata":"https://www.wikidata.org/wiki/Q11235244","display_name":"Domain (mathematical analysis)","level":2,"score":0.4903252422809601},{"id":"https://openalex.org/C9652623","wikidata":"https://www.wikidata.org/wiki/Q190109","display_name":"Field (mathematics)","level":2,"score":0.4257062077522278},{"id":"https://openalex.org/C47446073","wikidata":"https://www.wikidata.org/wiki/Q5165890","display_name":"Control theory (sociology)","level":3,"score":0.3314914107322693},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.2816191613674164},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.2135324776172638},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.13411292433738708},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","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},{"id":"https://openalex.org/C202444582","wikidata":"https://www.wikidata.org/wiki/Q837863","display_name":"Pure mathematics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/globecom46510.2021.9685542","is_oa":false,"landing_page_url":"https://doi.org/10.1109/globecom46510.2021.9685542","pdf_url":null,"source":{"id":"https://openalex.org/S4363607714","display_name":"2021 IEEE Global Communications Conference (GLOBECOM)","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":"conference"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2021 IEEE Global Communications Conference (GLOBECOM)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"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":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":14,"referenced_works":["https://openalex.org/W1997834106","https://openalex.org/W2099647334","https://openalex.org/W2116334496","https://openalex.org/W2145245010","https://openalex.org/W2336403911","https://openalex.org/W2339667469","https://openalex.org/W2553591559","https://openalex.org/W2622044750","https://openalex.org/W2735938380","https://openalex.org/W2890609471","https://openalex.org/W2955897898","https://openalex.org/W2966084980","https://openalex.org/W4313001863","https://openalex.org/W6793488170"],"related_works":["https://openalex.org/W4281688526","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/W2489379490","https://openalex.org/W2141031289"],"abstract_inverted_index":{"Extremely":[0],"large-scale":[1],"multiple-input-multiple-output":[2],"(XL-MIMO)":[3],"with":[4,33],"hybrid":[5],"precoding":[6],"is":[7,27,47,58],"a":[8,115],"promising":[9],"technique":[10],"to":[11,62,153,163],"meet":[12],"the":[13,40,50,63,90,96,101,108,122,130,156,165],"high":[14],"rate":[15],"requirements":[16],"for":[17],"future":[18],"6G.":[19],"To":[20,81],"realize":[21],"efficient":[22],"precoding,":[23],"accurate":[24],"channel":[25,30,41,92,132],"estimation":[26,31,73,93],"essential.":[28],"Existing":[29],"algorithms":[32],"low":[34],"pilot":[35],"overhead":[36],"heavily":[37],"rely":[38],"on":[39],"sparsity":[42,57,135],"in":[43,68,85,136],"angle":[44,109,123],"domain,":[45],"which":[46,118],"achieved":[48],"by":[49,94],"classical":[51,102],"far-field":[52,72],"planar-wavefront":[53],"assumption.":[54],"However,":[55],"this":[56,83,86,128,140],"not":[59],"available,":[60],"due":[61],"non-negligible":[64],"near-field":[65,91,131,157],"spherical-wavefront":[66],"property":[67],"XL-MIMO.":[69],"Therefore,":[70],"existing":[71],"schemes":[74],"will":[75],"suffer":[76],"from":[77],"severe":[78],"performance":[79],"loss.":[80],"address":[82],"problem,":[84],"paper,":[87],"we":[88,113,143],"study":[89],"exploiting":[95],"polar-domain":[97,116,141,146],"sparsity.":[98],"Specifically,":[99],"unlike":[100],"angle-domain":[103],"representation":[104],"that":[105],"only":[106],"considers":[107],"information":[110],"of":[111,167],"channel,":[112],"propose":[114,144],"representation,":[117],"simultaneously":[119],"accounts":[120],"both":[121],"and":[124],"distance":[125],"information.":[126],"In":[127],"way,":[129],"also":[133],"exhibits":[134],"polar":[137],"domain.":[138],"Exploiting":[139],"sparsity,":[142],"an":[145],"simultaneous":[147],"orthogonal":[148],"matching":[149],"pursuit":[150],"(P-SOMP)":[151],"algorithm":[152],"efficiently":[154],"estimate":[155],"channel.":[158],"Finally,":[159],"simulations":[160],"are":[161],"provided":[162],"verify":[164],"effectiveness":[166],"our":[168],"schemes.":[169]},"counts_by_year":[{"year":2025,"cited_by_count":11},{"year":2024,"cited_by_count":12},{"year":2023,"cited_by_count":6},{"year":2022,"cited_by_count":3}],"updated_date":"2026-06-22T08:00:12.763002","created_date":"2025-10-10T00:00:00"}