{"id":"https://openalex.org/W3217804057","doi":"https://doi.org/10.1109/lcomm.2021.3139198","title":"Channel Estimation for STAR-RIS-Aided Wireless Communication","display_name":"Channel Estimation for STAR-RIS-Aided Wireless Communication","publication_year":2021,"publication_date":"2021-12-28","ids":{"openalex":"https://openalex.org/W3217804057","doi":"https://doi.org/10.1109/lcomm.2021.3139198","mag":"3217804057"},"language":"en","primary_location":{"id":"doi:10.1109/lcomm.2021.3139198","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lcomm.2021.3139198","pdf_url":null,"source":{"id":"https://openalex.org/S147316732","display_name":"IEEE Communications Letters","issn_l":"1089-7798","issn":["1089-7798","1558-2558","2373-7891"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310316002","host_organization_name":"IEEE Communications Society","host_organization_lineage":["https://openalex.org/P4310316002","https://openalex.org/P4310319808"],"host_organization_lineage_names":["IEEE Communications Society","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 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/A5028873675","display_name":"Chenyu Wu","orcid":"https://orcid.org/0000-0003-0494-5063"},"institutions":[{"id":"https://openalex.org/I204983213","display_name":"Harbin Institute of Technology","ror":"https://ror.org/01yqg2h08","country_code":"CN","type":"education","lineage":["https://openalex.org/I204983213"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Chenyu Wu","raw_affiliation_strings":["School of Electronic and Information Engineering, Harbin Institute of Technology (HIT), Harbin, China"],"raw_orcid":"https://orcid.org/0000-0003-0494-5063","affiliations":[{"raw_affiliation_string":"School of Electronic and Information Engineering, Harbin Institute of Technology (HIT), Harbin, China","institution_ids":["https://openalex.org/I204983213"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5010397043","display_name":"Changsheng You","orcid":"https://orcid.org/0000-0003-3245-9361"},"institutions":[{"id":"https://openalex.org/I3045169105","display_name":"Southern University of Science and Technology","ror":"https://ror.org/049tv2d57","country_code":"CN","type":"education","lineage":["https://openalex.org/I3045169105"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Changsheng You","raw_affiliation_strings":["Department of Electrical and Electronic Engineering, Southern University of Science and Technology (SUSTech), Shenzhen, China"],"raw_orcid":"https://orcid.org/0000-0003-3245-9361","affiliations":[{"raw_affiliation_string":"Department of Electrical and Electronic Engineering, Southern University of Science and Technology (SUSTech), Shenzhen, China","institution_ids":["https://openalex.org/I3045169105"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5076863392","display_name":"Yuanwei Liu","orcid":"https://orcid.org/0000-0002-6389-8941"},"institutions":[{"id":"https://openalex.org/I166337079","display_name":"Queen Mary University of London","ror":"https://ror.org/026zzn846","country_code":"GB","type":"education","lineage":["https://openalex.org/I124357947","https://openalex.org/I166337079"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Yuanwei Liu","raw_affiliation_strings":["School of Electronic Engineering and Computer Science, Queen Mary University of London, London, U.K"],"raw_orcid":"https://orcid.org/0000-0002-6389-8941","affiliations":[{"raw_affiliation_string":"School of Electronic Engineering and Computer Science, Queen Mary University of London, London, U.K","institution_ids":["https://openalex.org/I166337079"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5028868067","display_name":"Xuemai Gu","orcid":"https://orcid.org/0000-0002-6011-9885"},"institutions":[{"id":"https://openalex.org/I204983213","display_name":"Harbin Institute of Technology","ror":"https://ror.org/01yqg2h08","country_code":"CN","type":"education","lineage":["https://openalex.org/I204983213"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xuemai Gu","raw_affiliation_strings":["School of Electronic and Information Engineering, Harbin Institute of Technology (HIT), Harbin, China"],"raw_orcid":"https://orcid.org/0000-0002-6011-9885","affiliations":[{"raw_affiliation_string":"School of Electronic and Information Engineering, Harbin Institute of Technology (HIT), Harbin, China","institution_ids":["https://openalex.org/I204983213"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5034376590","display_name":"Yunlong Cai","orcid":"https://orcid.org/0000-0001-9418-1700"},"institutions":[{"id":"https://openalex.org/I76130692","display_name":"Zhejiang University","ror":"https://ror.org/00a2xv884","country_code":"CN","type":"education","lineage":["https://openalex.org/I76130692"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yunlong Cai","raw_affiliation_strings":["College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, China"],"raw_orcid":"https://orcid.org/0000-0001-9418-1700","affiliations":[{"raw_affiliation_string":"College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, China","institution_ids":["https://openalex.org/I76130692"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":4,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":11.3098,"has_fulltext":false,"cited_by_count":167,"citation_normalized_percentile":{"value":0.99083711,"is_in_top_1_percent":true,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":99,"max":100},"biblio":{"volume":"26","issue":"3","first_page":"652","last_page":"656"},"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/T10851","display_name":"Optical Wireless Communication Technologies","score":0.9571999907493591,"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":0.9534000158309937,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.8135888576507568},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.7582212090492249},{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.6607422828674316},{"id":"https://openalex.org/keywords/protocol","display_name":"Protocol (science)","score":0.6007031202316284},{"id":"https://openalex.org/keywords/star","display_name":"Star (game theory)","score":0.5922946929931641},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.5470588207244873},{"id":"https://openalex.org/keywords/transmission","display_name":"Transmission (telecommunications)","score":0.5358973741531372},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.5317985415458679},{"id":"https://openalex.org/keywords/scheme","display_name":"Scheme (mathematics)","score":0.43447113037109375},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.38431355357170105},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.3453286290168762},{"id":"https://openalex.org/keywords/computer-engineering","display_name":"Computer engineering","score":0.33865487575531006},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.16419869661331177},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.1144176721572876}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8135888576507568},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.7582212090492249},{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.6607422828674316},{"id":"https://openalex.org/C2780385302","wikidata":"https://www.wikidata.org/wiki/Q367158","display_name":"Protocol (science)","level":3,"score":0.6007031202316284},{"id":"https://openalex.org/C2780897414","wikidata":"https://www.wikidata.org/wiki/Q7600592","display_name":"Star (game theory)","level":2,"score":0.5922946929931641},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.5470588207244873},{"id":"https://openalex.org/C761482","wikidata":"https://www.wikidata.org/wiki/Q118093","display_name":"Transmission (telecommunications)","level":2,"score":0.5358973741531372},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.5317985415458679},{"id":"https://openalex.org/C77618280","wikidata":"https://www.wikidata.org/wiki/Q1155772","display_name":"Scheme (mathematics)","level":2,"score":0.43447113037109375},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.38431355357170105},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.3453286290168762},{"id":"https://openalex.org/C113775141","wikidata":"https://www.wikidata.org/wiki/Q428691","display_name":"Computer engineering","level":1,"score":0.33865487575531006},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.16419869661331177},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.1144176721572876},{"id":"https://openalex.org/C142724271","wikidata":"https://www.wikidata.org/wiki/Q7208","display_name":"Pathology","level":1,"score":0.0},{"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/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.0},{"id":"https://openalex.org/C204787440","wikidata":"https://www.wikidata.org/wiki/Q188504","display_name":"Alternative medicine","level":2,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/lcomm.2021.3139198","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lcomm.2021.3139198","pdf_url":null,"source":{"id":"https://openalex.org/S147316732","display_name":"IEEE Communications Letters","issn_l":"1089-7798","issn":["1089-7798","1558-2558","2373-7891"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310316002","host_organization_name":"IEEE Communications Society","host_organization_lineage":["https://openalex.org/P4310316002","https://openalex.org/P4310319808"],"host_organization_lineage_names":["IEEE Communications Society","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 Communications Letters","raw_type":"journal-article"},{"id":"pmh:oai:hub.hku.hk:10722/349661","is_oa":false,"landing_page_url":"https://hub.hku.hk/handle/10722/349661","pdf_url":null,"source":{"id":"https://openalex.org/S4377196271","display_name":"The HKU Scholars Hub (University of Hong Kong)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I889458895","host_organization_name":"University of Hong Kong","host_organization_lineage":["https://openalex.org/I889458895"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.8700000047683716,"display_name":"Affordable and clean energy","id":"https://metadata.un.org/sdg/7"}],"awards":[{"id":"https://openalex.org/G2145162036","display_name":null,"funder_award_id":"62171158","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"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":16,"referenced_works":["https://openalex.org/W2011052705","https://openalex.org/W2937693915","https://openalex.org/W2971912794","https://openalex.org/W3008356568","https://openalex.org/W3010695123","https://openalex.org/W3013719647","https://openalex.org/W3039402952","https://openalex.org/W3100218246","https://openalex.org/W3103991536","https://openalex.org/W3129486236","https://openalex.org/W3135998278","https://openalex.org/W3159402647","https://openalex.org/W3174042897","https://openalex.org/W3185397499","https://openalex.org/W3202347572","https://openalex.org/W3205217150"],"related_works":["https://openalex.org/W2548963335","https://openalex.org/W2159941915","https://openalex.org/W1995129237","https://openalex.org/W4388081250","https://openalex.org/W2909457694","https://openalex.org/W1761601995","https://openalex.org/W2904599916","https://openalex.org/W4321608401","https://openalex.org/W4300468626","https://openalex.org/W3193749313"],"abstract_inverted_index":{"In":[0],"this":[1],"letter,":[2],"we":[3,54,100],"study":[4],"efficient":[5,37,103],"uplink":[6],"channel":[7,89,142],"estimation":[8,90,143],"design":[9],"for":[10,32,61,92],"a":[11,71,107,140],"simultaneously":[12,75],"transmitting":[13],"and":[14,34,69,118,130],"reflecting":[15],"reconfigurable":[16],"intelligent":[17],"surface":[18],"(STAR-RIS)":[19],"assisted":[20],"two-user":[21],"communication":[22],"systems.":[23],"We":[24],"first":[25],"consider":[26,55],"the":[27,42,45,56,64,77,83,87,93,113,124,127,133,136,146],"time":[28],"switching":[29],"(TS)":[30],"protocol":[31,60,95,138],"STAR-RIS":[33,62,134],"propose":[35,101],"an":[36,102],"scheme":[38,73],"to":[39,74,98,105],"separately":[40],"estimate":[41,76],"channels":[43,78],"of":[44,79,85,126],"two":[46],"users":[47],"with":[48],"optimized":[49],"training":[50,119],"(transmission/reflection)":[51],"pattern.":[52],"Next,":[53],"energy":[57],"splitting":[58],"(ES)":[59],"under":[63,135],"practical":[65],"coupled":[66],"phase-shift":[67],"model":[68],"devise":[70],"customized":[72],"both":[80],"users.":[81],"Although":[82],"problem":[84],"minimizing":[86],"resultant":[88],"error":[91,144],"ES":[94,147],"is":[96],"difficult":[97],"solve,":[99],"algorithm":[104],"obtain":[106],"high-quality":[108],"solution":[109],"by":[110],"jointly":[111],"designing":[112],"pilot":[114],"sequences,":[115],"power-splitting":[116],"ratio,":[117],"patterns.":[120],"Numerical":[121],"results":[122],"show":[123],"effectiveness":[125],"proposed":[128],"designs":[129],"reveal":[131],"that":[132],"TS":[137],"achieves":[139],"smaller":[141],"than":[145],"case.":[148]},"counts_by_year":[{"year":2026,"cited_by_count":5},{"year":2025,"cited_by_count":47},{"year":2024,"cited_by_count":48},{"year":2023,"cited_by_count":53},{"year":2022,"cited_by_count":14}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}