{"id":"https://openalex.org/W3048045154","doi":"https://doi.org/10.1109/tcomm.2020.3014680","title":"Enhanced Channel Estimation in Massive MIMO via Coordinated Pilot Design","display_name":"Enhanced Channel Estimation in Massive MIMO via Coordinated Pilot Design","publication_year":2020,"publication_date":"2020-08-06","ids":{"openalex":"https://openalex.org/W3048045154","doi":"https://doi.org/10.1109/tcomm.2020.3014680","mag":"3048045154"},"language":"en","primary_location":{"id":"doi:10.1109/tcomm.2020.3014680","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tcomm.2020.3014680","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/A5022905256","display_name":"Kaiming Shen","orcid":"https://orcid.org/0000-0003-0680-7975"},"institutions":[{"id":"https://openalex.org/I185261750","display_name":"University of Toronto","ror":"https://ror.org/03dbr7087","country_code":"CA","type":"education","lineage":["https://openalex.org/I185261750"]},{"id":"https://openalex.org/I4210116924","display_name":"Chinese University of Hong Kong, Shenzhen","ror":"https://ror.org/02d5ks197","country_code":"CN","type":"education","lineage":["https://openalex.org/I177725633","https://openalex.org/I180726961","https://openalex.org/I4210116924"]}],"countries":["CA","CN"],"is_corresponding":false,"raw_author_name":"Kaiming Shen","raw_affiliation_strings":["School of Science and Engineering, The Chinese University of Hong Kong (Shenzhen), Shenzhen, China","The Edward S. Rogers Sr. Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON, Canada"],"raw_orcid":"https://orcid.org/0000-0003-0680-7975","affiliations":[{"raw_affiliation_string":"School of Science and Engineering, The Chinese University of Hong Kong (Shenzhen), Shenzhen, China","institution_ids":["https://openalex.org/I4210116924"]},{"raw_affiliation_string":"The Edward S. Rogers Sr. Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON, Canada","institution_ids":["https://openalex.org/I185261750"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5081375588","display_name":"Hei Victor Cheng","orcid":"https://orcid.org/0000-0001-8432-3779"},"institutions":[{"id":"https://openalex.org/I185261750","display_name":"University of Toronto","ror":"https://ror.org/03dbr7087","country_code":"CA","type":"education","lineage":["https://openalex.org/I185261750"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Hei Victor Cheng","raw_affiliation_strings":["The Edward S. Rogers Sr. Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON, Canada"],"raw_orcid":"https://orcid.org/0000-0001-8432-3779","affiliations":[{"raw_affiliation_string":"The Edward S. Rogers Sr. Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON, Canada","institution_ids":["https://openalex.org/I185261750"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5103046175","display_name":"Xihan Chen","orcid":"https://orcid.org/0000-0002-6566-2318"},"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":"Xihan Chen","raw_affiliation_strings":["College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, China","[College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, China.]"],"raw_orcid":"https://orcid.org/0000-0002-6566-2318","affiliations":[{"raw_affiliation_string":"College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, China","institution_ids":["https://openalex.org/I76130692"]},{"raw_affiliation_string":"[College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou, China.]","institution_ids":["https://openalex.org/I76130692"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5005913897","display_name":"Yonina C. Eldar","orcid":"https://orcid.org/0000-0003-4358-5304"},"institutions":[{"id":"https://openalex.org/I53964585","display_name":"Weizmann Institute of Science","ror":"https://ror.org/0316ej306","country_code":"IL","type":"education","lineage":["https://openalex.org/I53964585"]}],"countries":["IL"],"is_corresponding":false,"raw_author_name":"Yonina C. Eldar","raw_affiliation_strings":["Faculty of Mathematics and Computer Science, Weizmann Institute of Science, Rehovot, Israel","Faculty of Mathematics and Computer Science Weizmann Institute of Science  Rehovot Israel"],"raw_orcid":"https://orcid.org/0000-0003-4358-5304","affiliations":[{"raw_affiliation_string":"Faculty of Mathematics and Computer Science, Weizmann Institute of Science, Rehovot, Israel","institution_ids":["https://openalex.org/I53964585"]},{"raw_affiliation_string":"Faculty of Mathematics and Computer Science Weizmann Institute of Science  Rehovot Israel","institution_ids":["https://openalex.org/I53964585"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5004681822","display_name":"Wei Yu","orcid":"https://orcid.org/0000-0002-7453-422X"},"institutions":[{"id":"https://openalex.org/I185261750","display_name":"University of Toronto","ror":"https://ror.org/03dbr7087","country_code":"CA","type":"education","lineage":["https://openalex.org/I185261750"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Wei Yu","raw_affiliation_strings":["The Edward S. Rogers Sr. Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON, Canada"],"raw_orcid":"https://orcid.org/0000-0002-7453-422X","affiliations":[{"raw_affiliation_string":"The Edward S. Rogers Sr. Department of Electrical and Computer Engineering, University of Toronto, Toronto, ON, Canada","institution_ids":["https://openalex.org/I185261750"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":4,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.8135,"has_fulltext":false,"cited_by_count":17,"citation_normalized_percentile":{"value":0.69774856,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":98},"biblio":{"volume":"68","issue":"11","first_page":"6872","last_page":"6885"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10148","display_name":"Advanced MIMO Systems Optimization","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/T10148","display_name":"Advanced MIMO Systems Optimization","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/T10125","display_name":"Advanced Wireless Communication Techniques","score":0.9983999729156494,"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/T11409","display_name":"Advanced Wireless Network Optimization","score":0.9972000122070312,"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/mimo","display_name":"MIMO","score":0.7443949580192566},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.6134228706359863},{"id":"https://openalex.org/keywords/rayleigh-fading","display_name":"Rayleigh fading","score":0.5194896459579468},{"id":"https://openalex.org/keywords/mean-squared-error","display_name":"Mean squared error","score":0.5029627680778503},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.4587976336479187},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.45787546038627625},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.4547112286090851},{"id":"https://openalex.org/keywords/bipartite-graph","display_name":"Bipartite graph","score":0.41726475954055786},{"id":"https://openalex.org/keywords/quadratic-equation","display_name":"Quadratic equation","score":0.4136735200881958},{"id":"https://openalex.org/keywords/control-theory","display_name":"Control theory (sociology)","score":0.34935128688812256},{"id":"https://openalex.org/keywords/fading","display_name":"Fading","score":0.33788082003593445},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.33427780866622925},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.1577368974685669},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.14542454481124878},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.08446857333183289}],"concepts":[{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.7443949580192566},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.6134228706359863},{"id":"https://openalex.org/C56985126","wikidata":"https://www.wikidata.org/wiki/Q854039","display_name":"Rayleigh fading","level":4,"score":0.5194896459579468},{"id":"https://openalex.org/C139945424","wikidata":"https://www.wikidata.org/wiki/Q1940696","display_name":"Mean squared error","level":2,"score":0.5029627680778503},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.4587976336479187},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.45787546038627625},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.4547112286090851},{"id":"https://openalex.org/C197657726","wikidata":"https://www.wikidata.org/wiki/Q174733","display_name":"Bipartite graph","level":3,"score":0.41726475954055786},{"id":"https://openalex.org/C129844170","wikidata":"https://www.wikidata.org/wiki/Q41299","display_name":"Quadratic equation","level":2,"score":0.4136735200881958},{"id":"https://openalex.org/C47446073","wikidata":"https://www.wikidata.org/wiki/Q5165890","display_name":"Control theory (sociology)","level":3,"score":0.34935128688812256},{"id":"https://openalex.org/C81978471","wikidata":"https://www.wikidata.org/wiki/Q1196572","display_name":"Fading","level":3,"score":0.33788082003593445},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.33427780866622925},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.1577368974685669},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.14542454481124878},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.08446857333183289},{"id":"https://openalex.org/C132525143","wikidata":"https://www.wikidata.org/wiki/Q141488","display_name":"Graph","level":2,"score":0.0},{"id":"https://openalex.org/C2775924081","wikidata":"https://www.wikidata.org/wiki/Q55608371","display_name":"Control (management)","level":2,"score":0.0},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.0},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/tcomm.2020.3014680","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tcomm.2020.3014680","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":[],"awards":[{"id":"https://openalex.org/G6621232540","display_name":null,"funder_award_id":"FA9550-18-1-0208","funder_id":"https://openalex.org/F4320338279","funder_display_name":"Air Force Office of Scientific Research"}],"funders":[{"id":"https://openalex.org/F4320316831","display_name":"Futurewei Technologies","ror":null},{"id":"https://openalex.org/F4320334593","display_name":"Natural Sciences and Engineering Research Council of Canada","ror":"https://ror.org/01h531d29"},{"id":"https://openalex.org/F4320338279","display_name":"Air Force Office of Scientific Research","ror":"https://ror.org/011e9bt93"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":38,"referenced_works":["https://openalex.org/W1482536380","https://openalex.org/W1518945650","https://openalex.org/W1552633185","https://openalex.org/W1694127520","https://openalex.org/W1733806262","https://openalex.org/W1907170265","https://openalex.org/W1967956032","https://openalex.org/W1986586714","https://openalex.org/W2013546591","https://openalex.org/W2019012533","https://openalex.org/W2023535408","https://openalex.org/W2029650406","https://openalex.org/W2035144082","https://openalex.org/W2047459700","https://openalex.org/W2061134945","https://openalex.org/W2069844710","https://openalex.org/W2108256297","https://openalex.org/W2111113050","https://openalex.org/W2112087343","https://openalex.org/W2113157322","https://openalex.org/W2119854596","https://openalex.org/W2127401968","https://openalex.org/W2141682101","https://openalex.org/W2145013959","https://openalex.org/W2222512263","https://openalex.org/W2274594953","https://openalex.org/W2309773735","https://openalex.org/W2561146563","https://openalex.org/W2587782165","https://openalex.org/W2788350651","https://openalex.org/W2788428941","https://openalex.org/W2940207559","https://openalex.org/W2962860833","https://openalex.org/W2963151934","https://openalex.org/W2963851621","https://openalex.org/W2979600268","https://openalex.org/W3009060018","https://openalex.org/W6694504242"],"related_works":["https://openalex.org/W2116044594","https://openalex.org/W2101999641","https://openalex.org/W1503152075","https://openalex.org/W301676527","https://openalex.org/W2052600062","https://openalex.org/W2124541664","https://openalex.org/W289296924","https://openalex.org/W2122920812","https://openalex.org/W2109988226","https://openalex.org/W2545273393"],"abstract_inverted_index":{"Pilot":[0],"contamination":[1,84],"is":[2],"a":[3,46,113],"limiting":[4],"factor":[5],"in":[6,29,62,98,176],"multicell":[7],"massive":[8],"multiple-input":[9],"multiple-output":[10],"(MIMO)":[11],"systems":[12],"because":[13],"it":[14],"can":[15,103,127],"severely":[16],"impair":[17],"channel":[18,34,63],"estimation.":[19,64],"Prior":[20],"works":[21],"have":[22],"suggested":[23],"coordinating":[24],"pilot":[25,39,50,83,119,169,178],"design":[26,51],"across":[27],"cells":[28],"order":[30],"to":[31,55,74,85,95,112,122,154],"reduce":[32],"the":[33,57,69,75,80,93,108,137,151,161,164],"estimation":[35],"error":[36],"caused":[37],"by":[38,130],"contamination.":[40,179],"In":[41,65],"this":[42],"paper,":[43],"we":[44,67,135],"propose":[45],"method":[47,153],"for":[48],"coordinated":[49],"using":[52],"fractional":[53],"programming":[54],"minimize":[56],"weighted":[58,131],"mean":[59],"squared-error":[60],"(MSE)":[61],"particular,":[66],"apply":[68],"recently":[70],"proposed":[71,152,165],"quadratic":[72],"transform":[73],"MSE":[76],"expression":[77],"which":[78,126],"allows":[79],"effect":[81],"of":[82,116,140,150,163],"be":[86,96,104,128],"decoupled.":[87],"The":[88],"resulting":[89],"problem":[90,125],"reformulation":[91],"enables":[92],"pilots":[94,109,145],"optimized":[97],"closed":[99],"form":[100],"if":[101],"they":[102],"designed":[105],"arbitrarily.":[106],"When":[107],"are":[110],"restricted":[111],"given":[114],"set":[115],"orthogonal":[117,144],"sequences,":[118],"optimization":[120],"reduces":[121],"an":[123,148],"assignment":[124],"solved":[129],"bipartite":[132],"matching.":[133],"Furthermore,":[134],"consider":[136],"max-min":[138],"fairness":[139],"data":[141],"rates":[142],"with":[143,173],"and":[146,167],"obtain":[147],"extension":[149],"correlated":[155],"Rayleigh":[156],"fading.":[157],"Finally,":[158],"simulations":[159],"demonstrate":[160],"advantage":[162],"(orthogonal":[166],"nonorthogonal)":[168],"designs":[170],"as":[171],"compared":[172],"state-of-the-art":[174],"methods":[175],"combating":[177]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":4},{"year":2024,"cited_by_count":2},{"year":2023,"cited_by_count":6},{"year":2022,"cited_by_count":3},{"year":2020,"cited_by_count":1}],"updated_date":"2026-07-25T09:21:30.201066","created_date":"2025-10-10T00:00:00"}
