{"id":"https://openalex.org/W3035697429","doi":"https://doi.org/10.1109/sam48682.2020.9104305","title":"Parallel Factor Decomposition Channel Estimation in RIS-Assisted Multi-User MISO Communication","display_name":"Parallel Factor Decomposition Channel Estimation in RIS-Assisted Multi-User MISO Communication","publication_year":2020,"publication_date":"2020-06-01","ids":{"openalex":"https://openalex.org/W3035697429","doi":"https://doi.org/10.1109/sam48682.2020.9104305","mag":"3035697429"},"language":"en","primary_location":{"id":"doi:10.1109/sam48682.2020.9104305","is_oa":false,"landing_page_url":"https://doi.org/10.1109/sam48682.2020.9104305","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2020 IEEE 11th Sensor Array and Multichannel Signal Processing Workshop (SAM)","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/A5100670216","display_name":"Li Wei","orcid":"https://orcid.org/0000-0003-2938-7758"},"institutions":[{"id":"https://openalex.org/I152815399","display_name":"Singapore University of Technology and Design","ror":"https://ror.org/05j6fvn87","country_code":"SG","type":"education","lineage":["https://openalex.org/I152815399"]}],"countries":["SG"],"is_corresponding":false,"raw_author_name":"Li Wei","raw_affiliation_strings":["Engineering Product Development, Singapore University of Technology and Design, Singapore"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Engineering Product Development, Singapore University of Technology and Design, Singapore","institution_ids":["https://openalex.org/I152815399"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5076730859","display_name":"Chongwen Huang","orcid":"https://orcid.org/0000-0001-8398-8437"},"institutions":[{"id":"https://openalex.org/I152815399","display_name":"Singapore University of Technology and Design","ror":"https://ror.org/05j6fvn87","country_code":"SG","type":"education","lineage":["https://openalex.org/I152815399"]}],"countries":["SG"],"is_corresponding":false,"raw_author_name":"Chongwen Huang","raw_affiliation_strings":["Engineering Product Development, Singapore University of Technology and Design, Singapore"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Engineering Product Development, Singapore University of Technology and Design, Singapore","institution_ids":["https://openalex.org/I152815399"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5056331037","display_name":"George C. Alexandropoulos","orcid":"https://orcid.org/0000-0002-6587-1371"},"institutions":[{"id":"https://openalex.org/I200777214","display_name":"National and Kapodistrian University of Athens","ror":"https://ror.org/04gnjpq42","country_code":"GR","type":"education","lineage":["https://openalex.org/I200777214"]}],"countries":["GR"],"is_corresponding":false,"raw_author_name":"George C. Alexandropoulos","raw_affiliation_strings":["Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, Greece"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Informatics and Telecommunications, National and Kapodistrian University of Athens, Greece","institution_ids":["https://openalex.org/I200777214"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5060020877","display_name":"Chau Yuen","orcid":"https://orcid.org/0000-0002-9307-2120"},"institutions":[{"id":"https://openalex.org/I152815399","display_name":"Singapore University of Technology and Design","ror":"https://ror.org/05j6fvn87","country_code":"SG","type":"education","lineage":["https://openalex.org/I152815399"]}],"countries":["SG"],"is_corresponding":false,"raw_author_name":"Chau Yuen","raw_affiliation_strings":["Engineering Product Development, Singapore University of Technology and Design, Singapore"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Engineering Product Development, Singapore University of Technology and Design, Singapore","institution_ids":["https://openalex.org/I152815399"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":34.7091,"has_fulltext":false,"cited_by_count":122,"citation_normalized_percentile":{"value":0.99941702,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":97,"max":100},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"5"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11458","display_name":"Advanced Wireless Communication Technologies","score":1.0,"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":1.0,"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/T12042","display_name":"Satellite Communication Systems","score":0.9944000244140625,"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/T12079","display_name":"IoT Networks and Protocols","score":0.9864000082015991,"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/telecommunications-link","display_name":"Telecommunications link","score":0.840925931930542},{"id":"https://openalex.org/keywords/base-station","display_name":"Base station","score":0.7462067604064941},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7410489320755005},{"id":"https://openalex.org/keywords/benchmark","display_name":"Benchmark (surveying)","score":0.7303724884986877},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.6847591400146484},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.4966428875923157},{"id":"https://openalex.org/keywords/focus","display_name":"Focus (optics)","score":0.4796374440193176},{"id":"https://openalex.org/keywords/latency","display_name":"Latency (audio)","score":0.45279937982559204},{"id":"https://openalex.org/keywords/computer-engineering","display_name":"Computer engineering","score":0.43871426582336426},{"id":"https://openalex.org/keywords/user-equipment","display_name":"User equipment","score":0.43062594532966614},{"id":"https://openalex.org/keywords/decomposition","display_name":"Decomposition","score":0.413216769695282},{"id":"https://openalex.org/keywords/low-latency","display_name":"Low latency (capital markets)","score":0.4122556149959564},{"id":"https://openalex.org/keywords/communications-system","display_name":"Communications system","score":0.41013389825820923},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.3777177333831787},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.3646714985370636},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.24407503008842468},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.1660153567790985}],"concepts":[{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.840925931930542},{"id":"https://openalex.org/C68649174","wikidata":"https://www.wikidata.org/wiki/Q1379116","display_name":"Base station","level":2,"score":0.7462067604064941},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7410489320755005},{"id":"https://openalex.org/C185798385","wikidata":"https://www.wikidata.org/wiki/Q1161707","display_name":"Benchmark (surveying)","level":2,"score":0.7303724884986877},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.6847591400146484},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.4966428875923157},{"id":"https://openalex.org/C192209626","wikidata":"https://www.wikidata.org/wiki/Q190909","display_name":"Focus (optics)","level":2,"score":0.4796374440193176},{"id":"https://openalex.org/C82876162","wikidata":"https://www.wikidata.org/wiki/Q17096504","display_name":"Latency (audio)","level":2,"score":0.45279937982559204},{"id":"https://openalex.org/C113775141","wikidata":"https://www.wikidata.org/wiki/Q428691","display_name":"Computer engineering","level":1,"score":0.43871426582336426},{"id":"https://openalex.org/C2781327853","wikidata":"https://www.wikidata.org/wiki/Q3552547","display_name":"User equipment","level":3,"score":0.43062594532966614},{"id":"https://openalex.org/C124681953","wikidata":"https://www.wikidata.org/wiki/Q339062","display_name":"Decomposition","level":2,"score":0.413216769695282},{"id":"https://openalex.org/C46637626","wikidata":"https://www.wikidata.org/wiki/Q6693015","display_name":"Low latency (capital markets)","level":2,"score":0.4122556149959564},{"id":"https://openalex.org/C101765175","wikidata":"https://www.wikidata.org/wiki/Q577764","display_name":"Communications system","level":2,"score":0.41013389825820923},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.3777177333831787},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.3646714985370636},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.24407503008842468},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.1660153567790985},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.0},{"id":"https://openalex.org/C18903297","wikidata":"https://www.wikidata.org/wiki/Q7150","display_name":"Ecology","level":1,"score":0.0},{"id":"https://openalex.org/C205649164","wikidata":"https://www.wikidata.org/wiki/Q1071","display_name":"Geography","level":0,"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/C13280743","wikidata":"https://www.wikidata.org/wiki/Q131089","display_name":"Geodesy","level":1,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/sam48682.2020.9104305","is_oa":false,"landing_page_url":"https://doi.org/10.1109/sam48682.2020.9104305","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2020 IEEE 11th Sensor Array and Multichannel Signal Processing Workshop (SAM)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Affordable and clean energy","id":"https://metadata.un.org/sdg/7","score":0.9100000262260437}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":45,"referenced_works":["https://openalex.org/W1974403130","https://openalex.org/W1991042426","https://openalex.org/W1994219736","https://openalex.org/W2024165284","https://openalex.org/W2050770124","https://openalex.org/W2052856353","https://openalex.org/W2065312435","https://openalex.org/W2106762930","https://openalex.org/W2136023375","https://openalex.org/W2159393880","https://openalex.org/W2617211273","https://openalex.org/W2735938380","https://openalex.org/W2788062049","https://openalex.org/W2795167939","https://openalex.org/W2805166665","https://openalex.org/W2808128011","https://openalex.org/W2891191577","https://openalex.org/W2950077417","https://openalex.org/W2963121727","https://openalex.org/W2963355537","https://openalex.org/W2969519626","https://openalex.org/W2970670564","https://openalex.org/W2971912794","https://openalex.org/W2972912848","https://openalex.org/W2984937369","https://openalex.org/W2988451509","https://openalex.org/W2990747873","https://openalex.org/W2997665500","https://openalex.org/W3022916026","https://openalex.org/W3034281970","https://openalex.org/W3036462681","https://openalex.org/W3041653465","https://openalex.org/W3100218246","https://openalex.org/W3122864568","https://openalex.org/W3134059753","https://openalex.org/W4288365549","https://openalex.org/W6762113363","https://openalex.org/W6762171261","https://openalex.org/W6767810366","https://openalex.org/W6768101605","https://openalex.org/W6769637482","https://openalex.org/W6770412359","https://openalex.org/W6770773396","https://openalex.org/W6774505622","https://openalex.org/W6789193635"],"related_works":["https://openalex.org/W4365807906","https://openalex.org/W2157864637","https://openalex.org/W4223416141","https://openalex.org/W2105999282","https://openalex.org/W3006920049","https://openalex.org/W1922070205","https://openalex.org/W2136902318","https://openalex.org/W2957675536","https://openalex.org/W4226210192","https://openalex.org/W4376480765"],"abstract_inverted_index":{"Reconfigurable":[0],"Intelligent":[1],"Surfaces":[2],"(RISs)":[3],"have":[4],"been":[5],"recently":[6],"considered":[7],"as":[8,114,116],"an":[9,98],"energy-efficient":[10],"solution":[11],"for":[12],"future":[13],"wireless":[14],"networks":[15],"due":[16,43],"to":[17,44,87,103],"their":[18,53],"fast":[19],"and":[20,27,52,76,112,121],"low":[21,28],"power":[22],"configuration":[23],"enabling":[24],"massive":[25],"connectivity":[26],"latency":[29],"communications.":[30],"Channel":[31],"estimation":[32,133],"in":[33],"RIS-based":[34],"systems":[35],"is":[36],"one":[37],"of":[38,48,65,149],"the":[39,45,63,82,89,106,109,117,129,147,154],"most":[40],"critical":[41],"challenges":[42],"large":[46],"number":[47],"reflecting":[49],"unit":[50],"elements":[51],"distinctive":[54],"hardware":[55],"constraints.":[56],"In":[57],"this":[58],"paper,":[59],"we":[60],"focus":[61],"on":[62,81,146,153],"downlink":[64],"a":[66,78,136],"RIS-assisted":[67],"multi-user":[68],"Multiple":[69],"Input":[70],"Single":[71],"Output":[72],"(MISO)":[73],"communication":[74],"system":[75],"present":[77],"method":[79,96,134],"based":[80],"PARAllel":[83],"FACtor":[84],"(PARAFAC)":[85],"decomposition":[86],"unfold":[88],"resulting":[90],"cascaded":[91],"channel":[92,107,132],"model.":[93],"The":[94],"proposed":[95,130,155],"includes":[97],"alternating":[99],"least":[100],"squares":[101],"algorithm":[102],"iteratively":[104],"estimate":[105],"between":[108,119],"base":[110],"station":[111],"RIS,":[113],"well":[115],"channels":[118],"RIS":[120,151],"users.":[122],"Our":[123],"selective":[124],"simulation":[125],"results":[126],"show":[127],"that":[128],"iterative":[131],"outperforms":[135],"benchmark":[137],"scheme":[138],"using":[139],"genie-aided":[140],"information.":[141],"We":[142],"also":[143],"provide":[144],"insights":[145],"impact":[148],"different":[150],"settings":[152],"algorithm.":[156]},"counts_by_year":[{"year":2026,"cited_by_count":2},{"year":2025,"cited_by_count":7},{"year":2024,"cited_by_count":16},{"year":2023,"cited_by_count":19},{"year":2022,"cited_by_count":19},{"year":2021,"cited_by_count":37},{"year":2020,"cited_by_count":22}],"updated_date":"2026-07-29T14:22:42.915294","created_date":"2025-10-10T00:00:00"}