{"id":"https://openalex.org/W2284883540","doi":"https://doi.org/10.1109/vtcfall.2015.7391017","title":"Low-Complexity Segment Training Channel Estimation in Cloud Radio Access Networks","display_name":"Low-Complexity Segment Training Channel Estimation in Cloud Radio Access Networks","publication_year":2015,"publication_date":"2015-09-01","ids":{"openalex":"https://openalex.org/W2284883540","doi":"https://doi.org/10.1109/vtcfall.2015.7391017","mag":"2284883540"},"language":"en","primary_location":{"id":"doi:10.1109/vtcfall.2015.7391017","is_oa":false,"landing_page_url":"https://doi.org/10.1109/vtcfall.2015.7391017","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2015 IEEE 82nd Vehicular Technology Conference (VTC2015-Fall)","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/A5102852353","display_name":"Zhendong Mao","orcid":"https://orcid.org/0000-0001-8354-1969"},"institutions":[{"id":"https://openalex.org/I139759216","display_name":"Beijing University of Posts and Telecommunications","ror":"https://ror.org/04w9fbh59","country_code":"CN","type":"education","lineage":["https://openalex.org/I139759216"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zhendong Mao","raw_affiliation_strings":["Beijing University of Posts & Telecommunications, Beijing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Beijing University of Posts & Telecommunications, Beijing, China","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5060203564","display_name":"Mugen Peng","orcid":"https://orcid.org/0000-0002-4755-7231"},"institutions":[{"id":"https://openalex.org/I139759216","display_name":"Beijing University of Posts and Telecommunications","ror":"https://ror.org/04w9fbh59","country_code":"CN","type":"education","lineage":["https://openalex.org/I139759216"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Mugen Peng","raw_affiliation_strings":["Beijing University of Posts & Telecommunications, Beijing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Beijing University of Posts & Telecommunications, Beijing, China","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100419573","display_name":"Honggang Wang","orcid":"https://orcid.org/0000-0001-9475-2630"},"institutions":[{"id":"https://openalex.org/I100633361","display_name":"University of Massachusetts Dartmouth","ror":"https://ror.org/00fzmm222","country_code":"US","type":"education","lineage":["https://openalex.org/I100633361"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Honggang Wang","raw_affiliation_strings":["Electrical and Computer Engineering Department, University of Massachusetts Dartmouth"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Electrical and Computer Engineering Department, University of Massachusetts Dartmouth","institution_ids":["https://openalex.org/I100633361"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5059672022","display_name":"Jinhe Zhou","orcid":"https://orcid.org/0000-0002-6518-6390"},"institutions":[{"id":"https://openalex.org/I78675632","display_name":"Beijing Information Science & Technology University","ror":"https://ror.org/04xnqep60","country_code":"CN","type":"education","lineage":["https://openalex.org/I78675632"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Jinhe Zhou","raw_affiliation_strings":["Beijing Information Science and Technology University, Beijing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Beijing Information Science and Technology University, Beijing, China","institution_ids":["https://openalex.org/I78675632"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5102748357","display_name":"Xinqian Xie","orcid":"https://orcid.org/0000-0002-8370-3339"},"institutions":[{"id":"https://openalex.org/I139759216","display_name":"Beijing University of Posts and Telecommunications","ror":"https://ror.org/04w9fbh59","country_code":"CN","type":"education","lineage":["https://openalex.org/I139759216"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xinqian Xie","raw_affiliation_strings":["Beijing University of Posts & Telecommunications, Beijing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Beijing University of Posts & Telecommunications, Beijing, China","institution_ids":["https://openalex.org/I139759216"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.2353,"has_fulltext":false,"cited_by_count":3,"citation_normalized_percentile":{"value":0.78086529,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":96},"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/T10148","display_name":"Advanced MIMO Systems Optimization","score":0.9998000264167786,"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/T10148","display_name":"Advanced MIMO Systems Optimization","score":0.9998000264167786,"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":0.9993000030517578,"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/T10125","display_name":"Advanced Wireless Communication Techniques","score":0.9991000294685364,"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/estimator","display_name":"Estimator","score":0.7286189794540405},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.6227638721466064},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6048614978790283},{"id":"https://openalex.org/keywords/minimum-mean-square-error","display_name":"Minimum mean square error","score":0.5495206713676453},{"id":"https://openalex.org/keywords/computational-complexity-theory","display_name":"Computational complexity theory","score":0.49812912940979004},{"id":"https://openalex.org/keywords/cloud-computing","display_name":"Cloud computing","score":0.49024444818496704},{"id":"https://openalex.org/keywords/dimension","display_name":"Dimension (graph theory)","score":0.4877093732357025},{"id":"https://openalex.org/keywords/mean-squared-error","display_name":"Mean squared error","score":0.477140873670578},{"id":"https://openalex.org/keywords/covariance-matrix","display_name":"Covariance matrix","score":0.45593327283859253},{"id":"https://openalex.org/keywords/inversion","display_name":"Inversion (geology)","score":0.4232610762119293},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.4196479618549347},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.26863592863082886},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.2228056788444519},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.19366556406021118}],"concepts":[{"id":"https://openalex.org/C185429906","wikidata":"https://www.wikidata.org/wiki/Q1130160","display_name":"Estimator","level":2,"score":0.7286189794540405},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.6227638721466064},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6048614978790283},{"id":"https://openalex.org/C90652560","wikidata":"https://www.wikidata.org/wiki/Q11091747","display_name":"Minimum mean square error","level":3,"score":0.5495206713676453},{"id":"https://openalex.org/C179799912","wikidata":"https://www.wikidata.org/wiki/Q205084","display_name":"Computational complexity theory","level":2,"score":0.49812912940979004},{"id":"https://openalex.org/C79974875","wikidata":"https://www.wikidata.org/wiki/Q483639","display_name":"Cloud computing","level":2,"score":0.49024444818496704},{"id":"https://openalex.org/C33676613","wikidata":"https://www.wikidata.org/wiki/Q13415176","display_name":"Dimension (graph theory)","level":2,"score":0.4877093732357025},{"id":"https://openalex.org/C139945424","wikidata":"https://www.wikidata.org/wiki/Q1940696","display_name":"Mean squared error","level":2,"score":0.477140873670578},{"id":"https://openalex.org/C185142706","wikidata":"https://www.wikidata.org/wiki/Q1134404","display_name":"Covariance matrix","level":2,"score":0.45593327283859253},{"id":"https://openalex.org/C1893757","wikidata":"https://www.wikidata.org/wiki/Q3653001","display_name":"Inversion (geology)","level":3,"score":0.4232610762119293},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.4196479618549347},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.26863592863082886},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.2228056788444519},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.19366556406021118},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"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/C202444582","wikidata":"https://www.wikidata.org/wiki/Q837863","display_name":"Pure mathematics","level":1,"score":0.0},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.0},{"id":"https://openalex.org/C109007969","wikidata":"https://www.wikidata.org/wiki/Q749565","display_name":"Structural basin","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/vtcfall.2015.7391017","is_oa":false,"landing_page_url":"https://doi.org/10.1109/vtcfall.2015.7391017","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2015 IEEE 82nd Vehicular Technology Conference (VTC2015-Fall)","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":8,"referenced_works":["https://openalex.org/W2018843852","https://openalex.org/W2019905317","https://openalex.org/W2061134945","https://openalex.org/W2109137135","https://openalex.org/W2113157322","https://openalex.org/W2132647318","https://openalex.org/W2154078807","https://openalex.org/W2963168842"],"related_works":["https://openalex.org/W2102148524","https://openalex.org/W1980470275","https://openalex.org/W2314720829","https://openalex.org/W2086322839","https://openalex.org/W2075897667","https://openalex.org/W2907746047","https://openalex.org/W3125536267","https://openalex.org/W2274645452","https://openalex.org/W2158165366","https://openalex.org/W3195147989"],"abstract_inverted_index":{"Cloud":[0],"radio":[1],"access":[2],"networks":[3],"(C-RANs)":[4],"have":[5],"attracted":[6],"considerable":[7],"attention":[8],"because":[9],"of":[10,13,50,67],"the":[11,15,21,30,39,48,51,56,68,77,91,96],"capability":[12],"meeting":[14],"exponential":[16],"increasing":[17],"traffic":[18],"demand":[19],"in":[20,36,47],"future":[22],"communication":[23],"systems.":[24],"In":[25],"this":[26],"paper,":[27],"we":[28,59],"consider":[29],"segment":[31],"training":[32],"based":[33],"channel":[34,63,93],"estimation":[35],"C-RANs.":[37],"As":[38],"classical":[40],"minimum":[41],"mean-square-error":[42],"estimator":[43,64],"has":[44],"cubic":[45],"complexity":[46,79],"dimension":[49],"covariance":[52],"matrices,":[53],"due":[54],"to":[55,89],"inversion":[57],"operation,":[58],"propose":[60],"a":[61],"low-complexity":[62],"by":[65],"means":[66],"\\emph{L}-degree":[69],"matrix":[70],"polynomial":[71],"expansion,":[72],"which":[73],"can":[74],"significantly":[75],"reduce":[76],"computational":[78],"without":[80],"degrading":[81],"much":[82],"performance.":[83],"The":[84],"numerical":[85],"results":[86,98],"are":[87,101],"presented":[88],"verify":[90],"proposed":[92],"estimators,":[94],"and":[95],"simulation":[97],"show":[99],"there":[100],"significant":[102],"performance":[103],"gains":[104],"from":[105],"our":[106],"proposal.":[107]},"counts_by_year":[{"year":2018,"cited_by_count":2},{"year":2017,"cited_by_count":1}],"updated_date":"2026-07-29T14:22:42.915294","created_date":"2025-10-10T00:00:00"}
