{"id":"https://openalex.org/W3198902292","doi":"https://doi.org/10.1109/lwc.2021.3110059","title":"Asymptotic Achievability of the Cram\u00e9r-Rao Lower Bound of Channel Estimation for Reconfigurable Intelligent Surface Aided Communication Systems","display_name":"Asymptotic Achievability of the Cram\u00e9r-Rao Lower Bound of Channel Estimation for Reconfigurable Intelligent Surface Aided Communication Systems","publication_year":2021,"publication_date":"2021-09-03","ids":{"openalex":"https://openalex.org/W3198902292","doi":"https://doi.org/10.1109/lwc.2021.3110059","mag":"3198902292"},"language":"en","primary_location":{"id":"doi:10.1109/lwc.2021.3110059","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lwc.2021.3110059","pdf_url":null,"source":{"id":"https://openalex.org/S2500830676","display_name":"IEEE Wireless Communications Letters","issn_l":"2162-2337","issn":["2162-2337","2162-2345"],"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 Wireless Communications Letters","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/A5100449908","display_name":"Yiming Liu","orcid":"https://orcid.org/0000-0002-1393-908X"},"institutions":[{"id":"https://openalex.org/I116953780","display_name":"Tongji University","ror":"https://ror.org/03rc6as71","country_code":"CN","type":"education","lineage":["https://openalex.org/I116953780"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yiming Liu","raw_affiliation_strings":["Department of Information and Communication Engineering, Tongji University, Shanghai, China"],"raw_orcid":"https://orcid.org/0000-0002-1393-908X","affiliations":[{"raw_affiliation_string":"Department of Information and Communication Engineering, Tongji University, Shanghai, China","institution_ids":["https://openalex.org/I116953780"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5034541026","display_name":"Erwu Liu","orcid":"https://orcid.org/0000-0002-2706-6208"},"institutions":[{"id":"https://openalex.org/I116953780","display_name":"Tongji University","ror":"https://ror.org/03rc6as71","country_code":"CN","type":"education","lineage":["https://openalex.org/I116953780"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Erwu Liu","raw_affiliation_strings":["Department of Information and Communication Engineering, Tongji University, Shanghai, China"],"raw_orcid":"https://orcid.org/0000-0002-2706-6208","affiliations":[{"raw_affiliation_string":"Department of Information and Communication Engineering, Tongji University, Shanghai, China","institution_ids":["https://openalex.org/I116953780"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100431222","display_name":"Rui Wang","orcid":"https://orcid.org/0000-0002-2974-0972"},"institutions":[{"id":"https://openalex.org/I116953780","display_name":"Tongji University","ror":"https://ror.org/03rc6as71","country_code":"CN","type":"education","lineage":["https://openalex.org/I116953780"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Rui Wang","raw_affiliation_strings":["Department of Information and Communication Engineering, Tongji University, Shanghai, China"],"raw_orcid":"https://orcid.org/0000-0002-2974-0972","affiliations":[{"raw_affiliation_string":"Department of Information and Communication Engineering, Tongji University, Shanghai, China","institution_ids":["https://openalex.org/I116953780"]}]},{"author_position":"middle","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"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5001509753","display_name":"Binyu Lu","orcid":"https://orcid.org/0000-0001-7742-3026"},"institutions":[{"id":"https://openalex.org/I116953780","display_name":"Tongji University","ror":"https://ror.org/03rc6as71","country_code":"CN","type":"education","lineage":["https://openalex.org/I116953780"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Binyu Lu","raw_affiliation_strings":["Department of Information and Communication Engineering, Tongji University, Shanghai, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Information and Communication Engineering, Tongji University, Shanghai, China","institution_ids":["https://openalex.org/I116953780"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":2045,"currency":"USD","value_usd":2045},"apc_paid":null,"fwci":0.3252,"has_fulltext":false,"cited_by_count":7,"citation_normalized_percentile":{"value":0.53705088,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":98},"biblio":{"volume":"10","issue":"11","first_page":"2607","last_page":"2611"},"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":0.9995999932289124,"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":0.9987999796867371,"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/cram\u00e9r\u2013rao-bound","display_name":"Cram\u00e9r\u2013Rao bound","score":0.909507155418396},{"id":"https://openalex.org/keywords/estimator","display_name":"Estimator","score":0.7181981205940247},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6298179626464844},{"id":"https://openalex.org/keywords/upper-and-lower-bounds","display_name":"Upper and lower bounds","score":0.61043781042099},{"id":"https://openalex.org/keywords/beamforming","display_name":"Beamforming","score":0.5706065893173218},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.5417462587356567},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.5416470170021057},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.35870927572250366},{"id":"https://openalex.org/keywords/estimation-theory","display_name":"Estimation theory","score":0.3442589044570923},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.3034285604953766},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.24594321846961975},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.10066187381744385}],"concepts":[{"id":"https://openalex.org/C4978587","wikidata":"https://www.wikidata.org/wiki/Q1138810","display_name":"Cram\u00e9r\u2013Rao bound","level":3,"score":0.909507155418396},{"id":"https://openalex.org/C185429906","wikidata":"https://www.wikidata.org/wiki/Q1130160","display_name":"Estimator","level":2,"score":0.7181981205940247},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6298179626464844},{"id":"https://openalex.org/C77553402","wikidata":"https://www.wikidata.org/wiki/Q13222579","display_name":"Upper and lower bounds","level":2,"score":0.61043781042099},{"id":"https://openalex.org/C54197355","wikidata":"https://www.wikidata.org/wiki/Q5782992","display_name":"Beamforming","level":2,"score":0.5706065893173218},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.5417462587356567},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.5416470170021057},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.35870927572250366},{"id":"https://openalex.org/C167928553","wikidata":"https://www.wikidata.org/wiki/Q1376021","display_name":"Estimation theory","level":2,"score":0.3442589044570923},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3034285604953766},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.24594321846961975},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.10066187381744385},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/lwc.2021.3110059","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lwc.2021.3110059","pdf_url":null,"source":{"id":"https://openalex.org/S2500830676","display_name":"IEEE Wireless Communications Letters","issn_l":"2162-2337","issn":["2162-2337","2162-2345"],"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 Wireless Communications Letters","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G2425049952","display_name":null,"funder_award_id":"19511102002","funder_id":"https://openalex.org/F4320321885","funder_display_name":"Science and Technology Commission of Shanghai Municipality"},{"id":"https://openalex.org/G4717412138","display_name":null,"funder_award_id":"61771345","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G7187879309","display_name":null,"funder_award_id":"4217010675","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/F4320321885","display_name":"Science and Technology Commission of Shanghai Municipality","ror":"https://ror.org/03kt66j61"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":29,"referenced_works":["https://openalex.org/W151604921","https://openalex.org/W1991056455","https://openalex.org/W2095978736","https://openalex.org/W2096282089","https://openalex.org/W2104357403","https://openalex.org/W2127271355","https://openalex.org/W2134474909","https://openalex.org/W2140941610","https://openalex.org/W2148486648","https://openalex.org/W2160979406","https://openalex.org/W2296616510","https://openalex.org/W2794344156","https://openalex.org/W2910778537","https://openalex.org/W2942034734","https://openalex.org/W2950077417","https://openalex.org/W2969424089","https://openalex.org/W2985466239","https://openalex.org/W2994742101","https://openalex.org/W2995554704","https://openalex.org/W2996313530","https://openalex.org/W3009918410","https://openalex.org/W3032095193","https://openalex.org/W3039790476","https://openalex.org/W3103026331","https://openalex.org/W3103424327","https://openalex.org/W3124919228","https://openalex.org/W3134746776","https://openalex.org/W4250955649","https://openalex.org/W6776509185"],"related_works":["https://openalex.org/W1479746946","https://openalex.org/W2143803213","https://openalex.org/W2055757274","https://openalex.org/W2511739151","https://openalex.org/W2155014562","https://openalex.org/W2134404114","https://openalex.org/W2585557503","https://openalex.org/W1964936841","https://openalex.org/W2026659681","https://openalex.org/W2185708237"],"abstract_inverted_index":{"To":[0,54],"achieve":[1,115],"the":[2,10,18,33,41,61,73,93,107,116],"joint":[3,85],"active":[4],"and":[5,80,104],"passive":[6],"beamforming":[7],"gains":[8],"in":[9,32,110],"reconfigurable":[11],"intelligent":[12],"surface":[13],"assisted":[14],"millimeter":[15],"wave":[16],"system,":[17],"reflected":[19],"cascade":[20],"channel":[21,62],"needs":[22],"to":[23,35,90],"be":[24],"accurately":[25],"estimated.":[26],"Many":[27],"strategies":[28],"have":[29],"been":[30],"proposed":[31,109],"literature":[34],"solve":[36],"this":[37,56,111],"issue.":[38],"However,":[39],"whether":[40],"Cram\u00e9r-Rao":[42],"lower":[43],"bound":[44],"(CRLB)":[45],"of":[46,75],"such":[47],"estimation":[48,63],"is":[49,88],"achievable":[50],"still":[51],"remains":[52],"uncertain.":[53],"fill":[55],"gap,":[57],"we":[58],"first":[59],"convert":[60],"problem":[64,70],"into":[65],"a":[66,84],"sparse":[67],"signal":[68,94],"recovery":[69,95],"by":[71],"utilizing":[72],"properties":[74],"discrete":[76],"Fourier":[77],"transform":[78],"matrix":[79],"Kronecker":[81],"product.":[82],"Then,":[83],"typicality-based":[86],"estimator":[87],"utilized":[89],"carry":[91],"out":[92],"task.":[96],"We":[97],"show":[98],"that,":[99],"through":[100],"both":[101],"mathematical":[102],"proofs":[103],"numerical":[105],"simulations,":[106],"solution":[108],"letter":[112],"can":[113],"asymptotically":[114],"CRLB.":[117]},"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":2},{"year":2022,"cited_by_count":1}],"updated_date":"2026-08-28T12:50:07.497085","created_date":"2025-10-10T00:00:00"}
