{"id":"https://openalex.org/W4380520418","doi":"https://doi.org/10.1109/tcomm.2023.3285759","title":"Parametric Sparse Channel Estimation for RIS-Assisted Terahertz Systems","display_name":"Parametric Sparse Channel Estimation for RIS-Assisted Terahertz Systems","publication_year":2023,"publication_date":"2023-06-13","ids":{"openalex":"https://openalex.org/W4380520418","doi":"https://doi.org/10.1109/tcomm.2023.3285759"},"language":"en","primary_location":{"id":"doi:10.1109/tcomm.2023.3285759","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tcomm.2023.3285759","pdf_url":null,"source":{"id":"https://openalex.org/S196647941","display_name":"IEEE Transactions on Communications","issn_l":"0090-6778","issn":["0090-6778","1558-0857"],"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 Transactions on Communications","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/A5044179684","display_name":"Jiao Wu","orcid":"https://orcid.org/0000-0003-0122-9037"},"institutions":[{"id":"https://openalex.org/I139264467","display_name":"Seoul National University","ror":"https://ror.org/04h9pn542","country_code":"KR","type":"education","lineage":["https://openalex.org/I139264467"]},{"id":"https://openalex.org/I4210164379","display_name":"Seoul Media Institute of Technology","ror":"https://ror.org/04ywg4h07","country_code":"KR","type":"education","lineage":["https://openalex.org/I4210164379"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Jiao Wu","raw_affiliation_strings":["Institute of New Media and Communications and the Department of Electrical and Computer Engineering, Seoul National University, Seoul, South Korea"],"raw_orcid":"https://orcid.org/0000-0003-0122-9037","affiliations":[{"raw_affiliation_string":"Institute of New Media and Communications and the Department of Electrical and Computer Engineering, Seoul National University, Seoul, South Korea","institution_ids":["https://openalex.org/I4210164379","https://openalex.org/I139264467"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5055104142","display_name":"Seungnyun Kim","orcid":"https://orcid.org/0000-0001-6435-9029"},"institutions":[{"id":"https://openalex.org/I139264467","display_name":"Seoul National University","ror":"https://ror.org/04h9pn542","country_code":"KR","type":"education","lineage":["https://openalex.org/I139264467"]},{"id":"https://openalex.org/I4210164379","display_name":"Seoul Media Institute of Technology","ror":"https://ror.org/04ywg4h07","country_code":"KR","type":"education","lineage":["https://openalex.org/I4210164379"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Seungnyun Kim","raw_affiliation_strings":["Institute of New Media and Communications and the Department of Electrical and Computer Engineering, Seoul National University, Seoul, South Korea"],"raw_orcid":"https://orcid.org/0000-0001-6435-9029","affiliations":[{"raw_affiliation_string":"Institute of New Media and Communications and the Department of Electrical and Computer Engineering, Seoul National University, Seoul, South Korea","institution_ids":["https://openalex.org/I4210164379","https://openalex.org/I139264467"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5076075267","display_name":"Byonghyo Shim","orcid":"https://orcid.org/0000-0001-5051-1763"},"institutions":[{"id":"https://openalex.org/I139264467","display_name":"Seoul National University","ror":"https://ror.org/04h9pn542","country_code":"KR","type":"education","lineage":["https://openalex.org/I139264467"]},{"id":"https://openalex.org/I4210164379","display_name":"Seoul Media Institute of Technology","ror":"https://ror.org/04ywg4h07","country_code":"KR","type":"education","lineage":["https://openalex.org/I4210164379"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Byonghyo Shim","raw_affiliation_strings":["Institute of New Media and Communications and the Department of Electrical and Computer Engineering, Seoul National University, Seoul, South Korea"],"raw_orcid":"https://orcid.org/0000-0001-5051-1763","affiliations":[{"raw_affiliation_string":"Institute of New Media and Communications and the Department of Electrical and Computer Engineering, Seoul National University, Seoul, South Korea","institution_ids":["https://openalex.org/I4210164379","https://openalex.org/I139264467"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":5.2767,"has_fulltext":false,"cited_by_count":43,"citation_normalized_percentile":{"value":0.96345368,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":99,"max":100},"biblio":{"volume":"71","issue":"9","first_page":"5503","last_page":"5518"},"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":0.9916999936103821,"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/T10069","display_name":"Antenna Design and Analysis","score":0.9873999953269958,"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/channel","display_name":"Channel (broadcasting)","score":0.6843138933181763},{"id":"https://openalex.org/keywords/terahertz-radiation","display_name":"Terahertz radiation","score":0.6746600866317749},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6412909626960754},{"id":"https://openalex.org/keywords/path-loss","display_name":"Path loss","score":0.5711329579353333},{"id":"https://openalex.org/keywords/wavefront","display_name":"Wavefront","score":0.5535309910774231},{"id":"https://openalex.org/keywords/wideband","display_name":"Wideband","score":0.524674117565155},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.5194515585899353},{"id":"https://openalex.org/keywords/frequency-domain","display_name":"Frequency domain","score":0.46826961636543274},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.46357420086860657},{"id":"https://openalex.org/keywords/multipath-propagation","display_name":"Multipath propagation","score":0.4615459740161896},{"id":"https://openalex.org/keywords/parametric-statistics","display_name":"Parametric statistics","score":0.4252157211303711},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.2840198874473572},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.21113091707229614},{"id":"https://openalex.org/keywords/optics","display_name":"Optics","score":0.1937619149684906},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.18754619359970093},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.12914186716079712}],"concepts":[{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.6843138933181763},{"id":"https://openalex.org/C107816215","wikidata":"https://www.wikidata.org/wiki/Q647887","display_name":"Terahertz radiation","level":2,"score":0.6746600866317749},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6412909626960754},{"id":"https://openalex.org/C194273485","wikidata":"https://www.wikidata.org/wiki/Q1478845","display_name":"Path loss","level":3,"score":0.5711329579353333},{"id":"https://openalex.org/C165699331","wikidata":"https://www.wikidata.org/wiki/Q461533","display_name":"Wavefront","level":2,"score":0.5535309910774231},{"id":"https://openalex.org/C2780202535","wikidata":"https://www.wikidata.org/wiki/Q4524457","display_name":"Wideband","level":2,"score":0.524674117565155},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.5194515585899353},{"id":"https://openalex.org/C19118579","wikidata":"https://www.wikidata.org/wiki/Q786423","display_name":"Frequency domain","level":2,"score":0.46826961636543274},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.46357420086860657},{"id":"https://openalex.org/C161218011","wikidata":"https://www.wikidata.org/wiki/Q11827794","display_name":"Multipath propagation","level":3,"score":0.4615459740161896},{"id":"https://openalex.org/C117251300","wikidata":"https://www.wikidata.org/wiki/Q1849855","display_name":"Parametric statistics","level":2,"score":0.4252157211303711},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.2840198874473572},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.21113091707229614},{"id":"https://openalex.org/C120665830","wikidata":"https://www.wikidata.org/wiki/Q14620","display_name":"Optics","level":1,"score":0.1937619149684906},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.18754619359970093},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.12914186716079712},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.0},{"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/tcomm.2023.3285759","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tcomm.2023.3285759","pdf_url":null,"source":{"id":"https://openalex.org/S196647941","display_name":"IEEE Transactions on Communications","issn_l":"0090-6778","issn":["0090-6778","1558-0857"],"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 Transactions on Communications","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.4000000059604645,"id":"https://metadata.un.org/sdg/7","display_name":"Affordable and clean energy"}],"awards":[{"id":"https://openalex.org/G6011370873","display_name":null,"funder_award_id":"2022R1A5A1027646","funder_id":"https://openalex.org/F4320322030","funder_display_name":"Ministry of Science, ICT and Future Planning"},{"id":"https://openalex.org/G7278458300","display_name":null,"funder_award_id":"2022M3C1A3099336","funder_id":"https://openalex.org/F4320322030","funder_display_name":"Ministry of Science, ICT and Future Planning"}],"funders":[{"id":"https://openalex.org/F4320322030","display_name":"Ministry of Science, ICT and Future Planning","ror":"https://ror.org/032e49973"},{"id":"https://openalex.org/F4320322120","display_name":"National Research Foundation of Korea","ror":"https://ror.org/013aysd81"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":32,"referenced_works":["https://openalex.org/W1999913571","https://openalex.org/W2099647334","https://openalex.org/W2345986964","https://openalex.org/W2888283726","https://openalex.org/W2944658523","https://openalex.org/W2962959174","https://openalex.org/W2985466239","https://openalex.org/W2990747873","https://openalex.org/W3025201079","https://openalex.org/W3032095193","https://openalex.org/W3121435115","https://openalex.org/W3128307304","https://openalex.org/W3131472269","https://openalex.org/W3134980136","https://openalex.org/W3135884249","https://openalex.org/W3155632926","https://openalex.org/W3159576816","https://openalex.org/W3164550829","https://openalex.org/W3180206688","https://openalex.org/W3188236023","https://openalex.org/W3192857289","https://openalex.org/W4210772610","https://openalex.org/W4226370247","https://openalex.org/W4285130865","https://openalex.org/W4293094728","https://openalex.org/W4320029469","https://openalex.org/W4321021394","https://openalex.org/W4321770460","https://openalex.org/W4377710206","https://openalex.org/W4383899759","https://openalex.org/W4387414991","https://openalex.org/W6849032283"],"related_works":["https://openalex.org/W2033952283","https://openalex.org/W2762687161","https://openalex.org/W2353254830","https://openalex.org/W2351210568","https://openalex.org/W2028421553","https://openalex.org/W4229079866","https://openalex.org/W2890072373","https://openalex.org/W3000002614","https://openalex.org/W2800192479","https://openalex.org/W4226162851"],"abstract_inverted_index":{"To":[0,50],"support":[1,157],"extremely":[2],"high":[3],"data":[4],"rates":[5],"in":[6,21,95,179],"6G":[7],"wireless":[8,38],"networks,":[9],"reconfigurable":[10],"intelligent":[11],"surface":[12],"(RIS)-assisted":[13],"terahertz":[14],"(THz)":[15],"communications":[16],"have":[17],"gained":[18],"much":[19],"attention":[20],"recent":[22],"years.":[23],"By":[24],"manipulating":[25],"the":[26,32,37,46,52,71,74,80,86,96,123,135,146,152,162,173,182],"phase":[27],"shifts":[28],"of":[29,41,55,61,66,73,103,122,145,181],"reflecting":[30],"elements,":[31],"RIS":[33],"can":[34],"proactively":[35],"adjust":[36],"propagation":[39],"environment":[40],"THz":[42,57,75,99,118,148,175],"systems,":[43,58],"thereby":[44],"enhancing":[45],"overall":[47],"throughput":[48],"significantly.":[49],"realize":[51],"full":[53],"potential":[54],"RIS-assisted":[56,98,116,127],"an":[59,109],"acquisition":[60],"accurate":[62],"channel":[63,82,111,128,149,176],"information":[64],"is":[65,78,106,132],"great":[67],"importance.":[68],"However,":[69],"since":[70],"wavefront":[72,88],"electromagnetic":[76],"signal":[77],"spherical,":[79],"conventional":[81,174],"estimation":[83,112,129,177],"techniques":[84],"using":[85],"planar":[87],"assumption":[89],"suffer":[90],"from":[91,161],"severe":[92],"performance":[93,170],"degradation":[94],"near-field":[97,115,147],"systems.":[100,119],"An":[101],"aim":[102],"this":[104],"work":[105],"to":[107,133],"propose":[108],"efficient":[110],"technique":[113],"for":[114],"wideband":[117],"Key":[120],"idea":[121],"proposed":[124],"polar-domain":[125,153],"frequency-dependent":[126],"(PF-RCE)":[130],"scheme":[131],"estimate":[134],"sparse":[136],"multipath":[137],"components":[138],"(i.e.,":[139],"angles,":[140],"distances,":[141],"and":[142,155],"path":[143],"gains)":[144],"by":[150],"exploiting":[151],"sparsity":[154],"common":[156],"properties.":[158],"We":[159],"demonstrate":[160],"numerical":[163],"evaluations":[164],"that":[165],"PF-RCE":[166],"achieves":[167],"a":[168],"significant":[169],"gain":[171],"over":[172],"schemes":[178],"terms":[180],"normalized":[183],"mean":[184],"square":[185],"error":[186],"(NMSE).":[187]},"counts_by_year":[{"year":2026,"cited_by_count":3},{"year":2025,"cited_by_count":19},{"year":2024,"cited_by_count":13},{"year":2023,"cited_by_count":8}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}
