{"id":"https://openalex.org/W4393036411","doi":"https://doi.org/10.1109/gcwkshps58843.2023.10464973","title":"Near-Field Sparse Channel Estimation for Extremely Large-Scale RIS-Aided Wireless Communications","display_name":"Near-Field Sparse Channel Estimation for Extremely Large-Scale RIS-Aided Wireless Communications","publication_year":2023,"publication_date":"2023-12-04","ids":{"openalex":"https://openalex.org/W4393036411","doi":"https://doi.org/10.1109/gcwkshps58843.2023.10464973"},"language":"en","primary_location":{"id":"doi:10.1109/gcwkshps58843.2023.10464973","is_oa":false,"landing_page_url":"https://doi.org/10.1109/gcwkshps58843.2023.10464973","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2023 IEEE Globecom Workshops (GC Wkshps)","raw_type":"proceedings-article"},"type":"conference-paper","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/A5111015189","display_name":"Zixing Tang","orcid":null},"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/I4392021250","display_name":"State Key Laboratory of Networking and Switching Technology","ror":"https://ror.org/00qtv5q45","country_code":null,"type":"facility","lineage":["https://openalex.org/I139759216","https://openalex.org/I4392021250"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zixing Tang","raw_affiliation_strings":["Beijing University of Posts and Telecommunications,State Key Laboratory of Networking and Switching Technology,Beijing,China,100876"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Beijing University of Posts and Telecommunications,State Key Laboratory of Networking and Switching Technology,Beijing,China,100876","institution_ids":["https://openalex.org/I139759216","https://openalex.org/I4392021250"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5083670685","display_name":"Yuanbin Chen","orcid":"https://orcid.org/0000-0003-1640-4571"},"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/I4392021250","display_name":"State Key Laboratory of Networking and Switching Technology","ror":"https://ror.org/00qtv5q45","country_code":null,"type":"facility","lineage":["https://openalex.org/I139759216","https://openalex.org/I4392021250"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yuanbin Chen","raw_affiliation_strings":["Beijing University of Posts and Telecommunications,State Key Laboratory of Networking and Switching Technology,Beijing,China,100876"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Beijing University of Posts and Telecommunications,State Key Laboratory of Networking and Switching Technology,Beijing,China,100876","institution_ids":["https://openalex.org/I139759216","https://openalex.org/I4392021250"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5041465972","display_name":"Ying Wang","orcid":"https://orcid.org/0000-0002-4494-6389"},"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/I4392021250","display_name":"State Key Laboratory of Networking and Switching Technology","ror":"https://ror.org/00qtv5q45","country_code":null,"type":"facility","lineage":["https://openalex.org/I139759216","https://openalex.org/I4392021250"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Ying Wang","raw_affiliation_strings":["Beijing University of Posts and Telecommunications,State Key Laboratory of Networking and Switching Technology,Beijing,China,100876"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Beijing University of Posts and Telecommunications,State Key Laboratory of Networking and Switching Technology,Beijing,China,100876","institution_ids":["https://openalex.org/I139759216","https://openalex.org/I4392021250"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5027818347","display_name":"Tianqi Mao","orcid":"https://orcid.org/0000-0003-4700-9419"},"institutions":[{"id":"https://openalex.org/I125839683","display_name":"Beijing Institute of Technology","ror":"https://ror.org/01skt4w74","country_code":"CN","type":"education","lineage":["https://openalex.org/I125839683","https://openalex.org/I890469752"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Tianqi Mao","raw_affiliation_strings":["School of Information and Electronics and the Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology,Beijing,China,100081"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Information and Electronics and the Advanced Research Institute of Multidisciplinary Science, Beijing Institute of Technology,Beijing,China,100081","institution_ids":["https://openalex.org/I125839683"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5048817096","display_name":"Qingqing Wu","orcid":"https://orcid.org/0000-0002-0043-3266"},"institutions":[{"id":"https://openalex.org/I183067930","display_name":"Shanghai Jiao Tong University","ror":"https://ror.org/0220qvk04","country_code":"CN","type":"education","lineage":["https://openalex.org/I183067930"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Qingqing Wu","raw_affiliation_strings":["Shanghai Jiao Tong University,Department of Electronic Engineering,Shanghai,China,200240"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Shanghai Jiao Tong University,Department of Electronic Engineering,Shanghai,China,200240","institution_ids":["https://openalex.org/I183067930"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5081612175","display_name":"Marco Di Renzo","orcid":"https://orcid.org/0000-0003-0772-8793"},"institutions":[{"id":"https://openalex.org/I1294671590","display_name":"Centre National de la Recherche Scientifique","ror":"https://ror.org/02feahw73","country_code":"FR","type":"government","lineage":["https://openalex.org/I1294671590"]},{"id":"https://openalex.org/I4210097418","display_name":"Laboratoire des signaux et syst\u00e8mes","ror":"https://ror.org/00skw9v43","country_code":"FR","type":"facility","lineage":["https://openalex.org/I1294671590","https://openalex.org/I277688954","https://openalex.org/I277688954","https://openalex.org/I4210097418","https://openalex.org/I4210107720"]}],"countries":["FR"],"is_corresponding":false,"raw_author_name":"Marco Di Renzo","raw_affiliation_strings":["Université Paris-Saclay, CNRS, CentraleSupélec,Laboratoire des Signaux et Systèmes,Gif-sur-Yvette,France,91192"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Université Paris-Saclay, CNRS, CentraleSupélec,Laboratoire des Signaux et Systèmes,Gif-sur-Yvette,France,91192","institution_ids":["https://openalex.org/I1294671590","https://openalex.org/I4210097418"]}]},{"author_position":"last","author":{"id":null,"display_name":"Lajos Hanzo","orcid":null},"institutions":[{"id":"https://openalex.org/I43439940","display_name":"University of Southampton","ror":"https://ror.org/01ryk1543","country_code":"GB","type":"education","lineage":["https://openalex.org/I43439940"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Lajos Hanzo","raw_affiliation_strings":["University of Southampton,Southampton,U.K.,S017IBJ"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Southampton,Southampton,U.K.,S017IBJ","institution_ids":["https://openalex.org/I43439940"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":7,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":5,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"1373","last_page":"1379"},"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/T10326","display_name":"Indoor and Outdoor Localization Technologies","score":0.9976999759674072,"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/T11192","display_name":"Underwater Vehicles and Communication Systems","score":0.9945999979972839,"subfield":{"id":"https://openalex.org/subfields/2212","display_name":"Ocean 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/computer-science","display_name":"Computer science","score":0.7162029147148132},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.5842878222465515},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.5168476700782776},{"id":"https://openalex.org/keywords/coherence","display_name":"Coherence (philosophical gambling strategy)","score":0.444860577583313},{"id":"https://openalex.org/keywords/convolutional-neural-network","display_name":"Convolutional neural network","score":0.42733439803123474},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.35694584250450134},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.18657714128494263},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.1342594027519226}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7162029147148132},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.5842878222465515},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.5168476700782776},{"id":"https://openalex.org/C2781181686","wikidata":"https://www.wikidata.org/wiki/Q4226068","display_name":"Coherence (philosophical gambling strategy)","level":2,"score":0.444860577583313},{"id":"https://openalex.org/C81363708","wikidata":"https://www.wikidata.org/wiki/Q17084460","display_name":"Convolutional neural network","level":2,"score":0.42733439803123474},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.35694584250450134},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.18657714128494263},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.1342594027519226},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/gcwkshps58843.2023.10464973","is_oa":false,"landing_page_url":"https://doi.org/10.1109/gcwkshps58843.2023.10464973","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2023 IEEE Globecom Workshops (GC Wkshps)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Affordable and clean energy","score":0.4699999988079071,"id":"https://metadata.un.org/sdg/7"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":15,"referenced_works":["https://openalex.org/W2952066149","https://openalex.org/W3009985443","https://openalex.org/W3011911768","https://openalex.org/W3133878048","https://openalex.org/W3158356126","https://openalex.org/W3180206688","https://openalex.org/W4211052011","https://openalex.org/W4226370247","https://openalex.org/W4285123404","https://openalex.org/W4301858997","https://openalex.org/W4312264045","https://openalex.org/W4312610058","https://openalex.org/W4312915180","https://openalex.org/W4360897390","https://openalex.org/W4360931020"],"related_works":["https://openalex.org/W2051487156","https://openalex.org/W2073681303","https://openalex.org/W4293226380","https://openalex.org/W2053286651","https://openalex.org/W2181743346","https://openalex.org/W2187401768","https://openalex.org/W4321487865","https://openalex.org/W2181413294","https://openalex.org/W4313906399","https://openalex.org/W2989452537"],"abstract_inverted_index":{"A":[0],"significant":[1,72],"increase":[2],"in":[3,13,17,38,62,100,106,121,172],"the":[4,18,27,31,39,59,63,71,78,82,85,88,134,141,146,165,169,181,188],"number":[5],"of":[6,21,30,45,145,168],"reconfigurable":[7],"intelligent":[8],"surface":[9],"(RIS)":[10],"elements":[11],"results":[12,99,178],"a":[14,101,124],"spherical":[15],"wavefront":[16],"near":[19],"field":[20],"extremely":[22],"large-scale":[23],"RIS":[24],"(XL-RIS).":[25],"Although":[26],"channel":[28,103,114,185],"matrix":[29,171],"cascaded":[32,64],"two-hop":[33],"link":[34],"may":[35],"become":[36],"sparse":[37],"polar-domain":[40,47],"representation,":[41],"their":[42],"accurate":[43],"estimation":[44,104,186],"these":[46],"parameters":[48,91],"cannot":[49],"be":[50],"readily":[51],"guaranteed.":[52],"To":[53,66],"tackle":[54],"this":[55],"challenge,":[56],"we":[57,68],"exploit":[58],"sparsity":[60],"inherent":[61],"channel.":[65],"elaborate,":[67],"first":[69],"estimate":[70],"path-angles":[73],"and":[74,84,148],"distances":[75],"corresponding":[76],"to":[77,139],"common":[79],"paths":[80],"between":[81],"BS":[83],"XL-RIS.":[86],"Then,":[87],"individual":[89],"path":[90],"associated":[92],"with":[93],"different":[94],"users":[95],"are":[96,111],"recovered.":[97],"This":[98],"two-stage":[102,183],"scheme,":[105],"which":[107],"distinct":[108],"learning-based":[109,184],"networks":[110],"used":[112],"for":[113,132,162],"training":[115],"at":[116],"each":[117],"stage.":[118],"More":[119],"explicitly,":[120],"stage":[122,173],"I,":[123],"denoising":[125],"convolutional":[126],"neural":[127],"network":[128,159],"(DnCNN)":[129],"is":[130,160],"employed":[131],"treating":[133],"grid":[135,143],"mismatches":[136],"as":[137],"noise":[138],"determine":[140],"true":[142],"index":[144],"angles":[147],"distances.":[149],"By":[150],"contrast,":[151],"an":[152],"iterative":[153],"shrinkage":[154],"thresholding":[155],"algorithm":[156],"(ISTA)":[157],"based":[158],"proposed":[161,182],"adaptively":[163],"adjusting":[164],"column":[166],"coherence":[167],"dictionary":[170],"II.":[174],"Finally,":[175],"our":[176],"simulation":[177],"demonstrate":[179],"that":[180],"outperforms":[187],"state-of-the-art":[189],"benchmarks.":[190]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":3}],"updated_date":"2026-07-22T07:51:19.307946","created_date":"2025-10-10T00:00:00"}