{"id":"https://openalex.org/W4388117843","doi":"https://doi.org/10.23919/eusipco58844.2023.10290107","title":"Nested PARAFAC Tensor-Based Channel Estimation Method for Double RIS-Aided MIMO Communication Systems","display_name":"Nested PARAFAC Tensor-Based Channel Estimation Method for Double RIS-Aided MIMO Communication Systems","publication_year":2023,"publication_date":"2023-09-04","ids":{"openalex":"https://openalex.org/W4388117843","doi":"https://doi.org/10.23919/eusipco58844.2023.10290107"},"language":"en","primary_location":{"id":"doi:10.23919/eusipco58844.2023.10290107","is_oa":false,"landing_page_url":"https://doi.org/10.23919/eusipco58844.2023.10290107","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2023 31st European Signal Processing Conference (EUSIPCO)","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/A5051405628","display_name":"Sepideh Gherekhloo","orcid":"https://orcid.org/0000-0002-7736-0835"},"institutions":[{"id":"https://openalex.org/I119449181","display_name":"Technische Universit\u00e4t Ilmenau","ror":"https://ror.org/01weqhp73","country_code":"DE","type":"education","lineage":["https://openalex.org/I119449181"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Sepideh Gherekhloo","raw_affiliation_strings":["TU Ilmenau,Communications Research Laboratory (CRL),Ilmenau,Germany","Communications Research Laboratory (CRL), TU Ilmenau, Ilmenau, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"TU Ilmenau,Communications Research Laboratory (CRL),Ilmenau,Germany","institution_ids":["https://openalex.org/I119449181"]},{"raw_affiliation_string":"Communications Research Laboratory (CRL), TU Ilmenau, Ilmenau, Germany","institution_ids":["https://openalex.org/I119449181"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5072969025","display_name":"Khaled Ardah","orcid":"https://orcid.org/0000-0002-2396-2224"},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Khaled Ardah","raw_affiliation_strings":["Lenovo (Deutschland) GmbH"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Lenovo (Deutschland) GmbH","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5051813339","display_name":"Andr\u00e9 L. F. de Almeida","orcid":"https://orcid.org/0000-0002-3149-6307"},"institutions":[{"id":"https://openalex.org/I243754102","display_name":"Universidade Federal do Cear\u00e1","ror":"https://ror.org/03srtnf24","country_code":"BR","type":"education","lineage":["https://openalex.org/I243754102"]}],"countries":["BR"],"is_corresponding":false,"raw_author_name":"Andr\u00e9 L. F. De Almeida","raw_affiliation_strings":["Federal University of Ceará,Wireless Telecommunications Research Group,Fortaleza,Brazil"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Federal University of Ceará,Wireless Telecommunications Research Group,Fortaleza,Brazil","institution_ids":["https://openalex.org/I243754102"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5022067926","display_name":"Marjan Maleki","orcid":"https://orcid.org/0000-0001-9832-7383"},"institutions":[{"id":"https://openalex.org/I119449181","display_name":"Technische Universit\u00e4t Ilmenau","ror":"https://ror.org/01weqhp73","country_code":"DE","type":"education","lineage":["https://openalex.org/I119449181"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Marjan Maleki","raw_affiliation_strings":["TU Ilmenau,Communications Research Laboratory (CRL),Ilmenau,Germany","Communications Research Laboratory (CRL), TU Ilmenau, Ilmenau, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"TU Ilmenau,Communications Research Laboratory (CRL),Ilmenau,Germany","institution_ids":["https://openalex.org/I119449181"]},{"raw_affiliation_string":"Communications Research Laboratory (CRL), TU Ilmenau, Ilmenau, Germany","institution_ids":["https://openalex.org/I119449181"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5004533757","display_name":"Martin Haardt","orcid":"https://orcid.org/0000-0001-7810-975X"},"institutions":[{"id":"https://openalex.org/I119449181","display_name":"Technische Universit\u00e4t Ilmenau","ror":"https://ror.org/01weqhp73","country_code":"DE","type":"education","lineage":["https://openalex.org/I119449181"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Martin Haardt","raw_affiliation_strings":["TU Ilmenau,Communications Research Laboratory (CRL),Ilmenau,Germany","Communications Research Laboratory (CRL), TU Ilmenau, Ilmenau, Germany"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"TU Ilmenau,Communications Research Laboratory (CRL),Ilmenau,Germany","institution_ids":["https://openalex.org/I119449181"]},{"raw_affiliation_string":"Communications Research Laboratory (CRL), TU Ilmenau, Ilmenau, Germany","institution_ids":["https://openalex.org/I119449181"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":5,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.4909,"has_fulltext":false,"cited_by_count":4,"citation_normalized_percentile":{"value":0.64494202,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":94,"max":96},"biblio":{"volume":null,"issue":null,"first_page":"1674","last_page":"1678"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11458","display_name":"Advanced Wireless Communication Technologies","score":0.9994999766349792,"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":0.9994999766349792,"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/T10148","display_name":"Advanced MIMO Systems Optimization","score":0.9961000084877014,"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/T12791","display_name":"Full-Duplex Wireless Communications","score":0.9926999807357788,"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/initialization","display_name":"Initialization","score":0.7515056729316711},{"id":"https://openalex.org/keywords/identifiability","display_name":"Identifiability","score":0.6863770484924316},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.6847090721130371},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6318962574005127},{"id":"https://openalex.org/keywords/overhead","display_name":"Overhead (engineering)","score":0.6007651090621948},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.5832350850105286},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.5579405426979065},{"id":"https://openalex.org/keywords/precoding","display_name":"Precoding","score":0.5411204099655151},{"id":"https://openalex.org/keywords/matrix-decomposition","display_name":"Matrix decomposition","score":0.5381075143814087},{"id":"https://openalex.org/keywords/factorization","display_name":"Factorization","score":0.5327836275100708},{"id":"https://openalex.org/keywords/transmitter","display_name":"Transmitter","score":0.5200374126434326},{"id":"https://openalex.org/keywords/fading","display_name":"Fading","score":0.49599489569664},{"id":"https://openalex.org/keywords/tensor","display_name":"Tensor (intrinsic definition)","score":0.46345090866088867},{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.41529712080955505},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.27730974555015564},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.17746034264564514},{"id":"https://openalex.org/keywords/machine-learning","display_name":"Machine learning","score":0.1160740852355957}],"concepts":[{"id":"https://openalex.org/C114466953","wikidata":"https://www.wikidata.org/wiki/Q6034165","display_name":"Initialization","level":2,"score":0.7515056729316711},{"id":"https://openalex.org/C122770356","wikidata":"https://www.wikidata.org/wiki/Q1656753","display_name":"Identifiability","level":2,"score":0.6863770484924316},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.6847090721130371},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6318962574005127},{"id":"https://openalex.org/C2779960059","wikidata":"https://www.wikidata.org/wiki/Q7113681","display_name":"Overhead (engineering)","level":2,"score":0.6007651090621948},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.5832350850105286},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.5579405426979065},{"id":"https://openalex.org/C160562895","wikidata":"https://www.wikidata.org/wiki/Q7239557","display_name":"Precoding","level":4,"score":0.5411204099655151},{"id":"https://openalex.org/C42355184","wikidata":"https://www.wikidata.org/wiki/Q1361088","display_name":"Matrix decomposition","level":3,"score":0.5381075143814087},{"id":"https://openalex.org/C187834632","wikidata":"https://www.wikidata.org/wiki/Q188804","display_name":"Factorization","level":2,"score":0.5327836275100708},{"id":"https://openalex.org/C47798520","wikidata":"https://www.wikidata.org/wiki/Q190157","display_name":"Transmitter","level":3,"score":0.5200374126434326},{"id":"https://openalex.org/C81978471","wikidata":"https://www.wikidata.org/wiki/Q1196572","display_name":"Fading","level":3,"score":0.49599489569664},{"id":"https://openalex.org/C155281189","wikidata":"https://www.wikidata.org/wiki/Q3518150","display_name":"Tensor (intrinsic definition)","level":2,"score":0.46345090866088867},{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.41529712080955505},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.27730974555015564},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.17746034264564514},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.1160740852355957},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C202444582","wikidata":"https://www.wikidata.org/wiki/Q837863","display_name":"Pure mathematics","level":1,"score":0.0},{"id":"https://openalex.org/C158693339","wikidata":"https://www.wikidata.org/wiki/Q190524","display_name":"Eigenvalues and eigenvectors","level":2,"score":0.0},{"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/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.23919/eusipco58844.2023.10290107","is_oa":false,"landing_page_url":"https://doi.org/10.23919/eusipco58844.2023.10290107","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2023 31st European Signal Processing Conference (EUSIPCO)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":22,"referenced_works":["https://openalex.org/W1989549091","https://openalex.org/W2025603201","https://openalex.org/W2101597841","https://openalex.org/W2258153734","https://openalex.org/W2805166665","https://openalex.org/W2949670636","https://openalex.org/W2950077417","https://openalex.org/W3005476696","https://openalex.org/W3006557588","https://openalex.org/W3015594231","https://openalex.org/W3035217884","https://openalex.org/W3035386068","https://openalex.org/W3047581446","https://openalex.org/W3048745140","https://openalex.org/W3096401097","https://openalex.org/W3096723356","https://openalex.org/W3099769502","https://openalex.org/W3128596355","https://openalex.org/W3133443365","https://openalex.org/W3183658782","https://openalex.org/W3201584873","https://openalex.org/W4297911933"],"related_works":["https://openalex.org/W2724847603","https://openalex.org/W2034041141","https://openalex.org/W2184661725","https://openalex.org/W112856298","https://openalex.org/W2573470972","https://openalex.org/W2105626102","https://openalex.org/W2131038454","https://openalex.org/W4240568257","https://openalex.org/W1973739845","https://openalex.org/W119752240"],"abstract_inverted_index":{"In":[0],"this":[1],"paper,":[2],"we":[3,81],"consider":[4],"a":[5,44,48,55,57,104,125],"double-RIS":[6],"(D-RIS)":[7],"aided":[8,37],"MIMO":[9,38],"system,":[10],"where":[11,64],"one":[12],"RIS":[13],"is":[14,22,62],"deployed":[15],"closer":[16,24],"to":[17,25],"the":[18,26,31,75,110,114,133,144],"transmitter":[19],"and":[20],"another":[21],"placed":[23],"receiver.":[27],"We":[28],"show":[29,98],"that":[30,99],"received":[32],"signals":[33],"in":[34,72],"flat-fading":[35],"D-RIS":[36],"systems":[39],"can":[40,123,138],"be":[41,140],"represented":[42],"as":[43,107,109,147],"4-way":[45],"tensor":[46],"satisfying":[47],"nested":[49],"PARAFAC":[50],"decomposition":[51],"model.":[52],"Exploiting":[53],"such":[54],"structure,":[56],"closed-form":[58],"channel":[59,88],"estimation":[60,89],"method":[61,90,122,136],"proposed,":[63],"two":[65],"out":[66],"of":[67,113],"three":[68],"channels":[69],"are":[70,117],"estimated":[71],"parallel":[73],"using":[74,143],"low-complexity":[76],"Khatri-Rao":[77,115,145],"factorization":[78,116,146],"technique.":[79],"Furthermore,":[80],"propose":[82],"an":[83,92,148],"alternating":[84],"least":[85],"squares":[86],"(ALS)-based":[87],"with":[91,128],"efficient":[93],"initialization.":[94,149],"The":[95,119],"simulation":[96],"results":[97],"both":[100],"proposed":[101,120,134],"methods":[102],"have":[103],"comparable":[105],"performance":[106,127,137],"long":[108],"identifiability":[111],"conditions":[112],"satisfied.":[118],"ALS-based":[121,135],"achieve":[124],"satisfactory":[126],"less":[129],"training":[130],"overhead.":[131],"Moreover,":[132],"further":[139],"improved":[141],"by":[142]},"counts_by_year":[{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":2}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}