{"id":"https://openalex.org/W3133612327","doi":"https://doi.org/10.1109/jiot.2021.3063476","title":"Joint User Activity Identification and Channel Estimation for Grant-Free NOMA: A Spatial\u2013Temporal Structure-Enhanced Approach","display_name":"Joint User Activity Identification and Channel Estimation for Grant-Free NOMA: A Spatial\u2013Temporal Structure-Enhanced Approach","publication_year":2021,"publication_date":"2021-03-03","ids":{"openalex":"https://openalex.org/W3133612327","doi":"https://doi.org/10.1109/jiot.2021.3063476","mag":"3133612327"},"language":"en","primary_location":{"id":"doi:10.1109/jiot.2021.3063476","is_oa":false,"landing_page_url":"https://doi.org/10.1109/jiot.2021.3063476","pdf_url":null,"source":{"id":"https://openalex.org/S2480266640","display_name":"IEEE Internet of Things Journal","issn_l":"2327-4662","issn":["2327-4662","2372-2541"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["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 Internet of Things Journal","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/A5010655393","display_name":"Liantao Wu","orcid":"https://orcid.org/0000-0001-5160-5999"},"institutions":[{"id":"https://openalex.org/I30809798","display_name":"ShanghaiTech University","ror":"https://ror.org/030bhh786","country_code":"CN","type":"education","lineage":["https://openalex.org/I30809798"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Liantao Wu","raw_affiliation_strings":["School of Information Science and Technology, ShanghaiTech University, Shanghai, China"],"affiliations":[{"raw_affiliation_string":"School of Information Science and Technology, ShanghaiTech University, Shanghai, China","institution_ids":["https://openalex.org/I30809798"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5089450416","display_name":"Peng Sun","orcid":"https://orcid.org/0000-0001-6221-8142"},"institutions":[{"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"]},{"id":"https://openalex.org/I4210104064","display_name":"Shenzhen Academy of Robotics","ror":"https://ror.org/01h027j09","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210104064"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Peng Sun","raw_affiliation_strings":["School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, China","Shenzhen Institute of Artificial Intelligence and Robotics for Society, Shenzhen, China"],"affiliations":[{"raw_affiliation_string":"School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen, China","institution_ids":["https://openalex.org/I4210116924"]},{"raw_affiliation_string":"Shenzhen Institute of Artificial Intelligence and Robotics for Society, Shenzhen, China","institution_ids":["https://openalex.org/I4210104064"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100422345","display_name":"Zhibo Wang","orcid":"https://orcid.org/0000-0002-5804-3279"},"institutions":[{"id":"https://openalex.org/I168879160","display_name":"Zhejiang University of Science and Technology","ror":"https://ror.org/05mx0wr29","country_code":"CN","type":"education","lineage":["https://openalex.org/I168879160"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zhibo Wang","raw_affiliation_strings":["College of Computer Science and Technology, Zhejiang University, Hangzhou, China"],"affiliations":[{"raw_affiliation_string":"College of Computer Science and Technology, Zhejiang University, Hangzhou, China","institution_ids":["https://openalex.org/I168879160"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5100397725","display_name":"Yang Yang","orcid":"https://orcid.org/0000-0003-0608-9408"},"institutions":[{"id":"https://openalex.org/I4210151021","display_name":"Shanghai Institute of Computing Technology","ror":"https://ror.org/05ek0ze18","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210151021"]},{"id":"https://openalex.org/I30809798","display_name":"ShanghaiTech University","ror":"https://ror.org/030bhh786","country_code":"CN","type":"education","lineage":["https://openalex.org/I30809798"]},{"id":"https://openalex.org/I4210136793","display_name":"Peng Cheng Laboratory","ror":"https://ror.org/03qdqbt06","country_code":"CN","type":"facility","lineage":["https://openalex.org/I4210136793"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yang Yang","raw_affiliation_strings":["Research Center for Network Communication, Peng Cheng Laboratory, Shenzhen, China","Shanghai Institute of Fog Computing Technology, ShanghaiTech University, Shanghai, China"],"affiliations":[{"raw_affiliation_string":"Research Center for Network Communication, Peng Cheng Laboratory, Shenzhen, China","institution_ids":["https://openalex.org/I4210136793"]},{"raw_affiliation_string":"Shanghai Institute of Fog Computing Technology, ShanghaiTech University, Shanghai, China","institution_ids":["https://openalex.org/I4210151021","https://openalex.org/I30809798"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5010655393"],"corresponding_institution_ids":["https://openalex.org/I30809798"],"apc_list":null,"apc_paid":null,"fwci":3.5025,"has_fulltext":false,"cited_by_count":20,"citation_normalized_percentile":{"value":0.93197183,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":97,"max":99},"biblio":{"volume":"8","issue":"15","first_page":"12339","last_page":"12349"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10500","display_name":"Sparse and Compressive Sensing Techniques","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2206","display_name":"Computational Mechanics"},"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/T10500","display_name":"Sparse and Compressive Sensing Techniques","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2206","display_name":"Computational Mechanics"},"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/T11458","display_name":"Advanced Wireless Communication Technologies","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/T10326","display_name":"Indoor and Outdoor Localization Technologies","score":0.9995999932289124,"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/computer-science","display_name":"Computer science","score":0.8099665641784668},{"id":"https://openalex.org/keywords/subspace-topology","display_name":"Subspace topology","score":0.649052619934082},{"id":"https://openalex.org/keywords/multiuser-detection","display_name":"Multiuser detection","score":0.5922525525093079},{"id":"https://openalex.org/keywords/compressed-sensing","display_name":"Compressed sensing","score":0.4973125755786896},{"id":"https://openalex.org/keywords/kronecker-delta","display_name":"Kronecker delta","score":0.48700767755508423},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.4648439288139343},{"id":"https://openalex.org/keywords/joint","display_name":"Joint (building)","score":0.4445202648639679},{"id":"https://openalex.org/keywords/spatial-correlation","display_name":"Spatial correlation","score":0.43927961587905884},{"id":"https://openalex.org/keywords/frame","display_name":"Frame (networking)","score":0.4225504994392395},{"id":"https://openalex.org/keywords/noise","display_name":"Noise (video)","score":0.41898709535598755},{"id":"https://openalex.org/keywords/noma","display_name":"Noma","score":0.41446828842163086},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.3958895802497864},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.2950572967529297},{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.1408216953277588},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.13103294372558594},{"id":"https://openalex.org/keywords/image","display_name":"Image (mathematics)","score":0.08302509784698486},{"id":"https://openalex.org/keywords/code-division-multiple-access","display_name":"Code division multiple access","score":0.08101817965507507}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.8099665641784668},{"id":"https://openalex.org/C32834561","wikidata":"https://www.wikidata.org/wiki/Q660730","display_name":"Subspace topology","level":2,"score":0.649052619934082},{"id":"https://openalex.org/C2777104032","wikidata":"https://www.wikidata.org/wiki/Q16324514","display_name":"Multiuser detection","level":3,"score":0.5922525525093079},{"id":"https://openalex.org/C124851039","wikidata":"https://www.wikidata.org/wiki/Q2665459","display_name":"Compressed sensing","level":2,"score":0.4973125755786896},{"id":"https://openalex.org/C39482219","wikidata":"https://www.wikidata.org/wiki/Q192826","display_name":"Kronecker delta","level":2,"score":0.48700767755508423},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.4648439288139343},{"id":"https://openalex.org/C18555067","wikidata":"https://www.wikidata.org/wiki/Q8375051","display_name":"Joint (building)","level":2,"score":0.4445202648639679},{"id":"https://openalex.org/C150060386","wikidata":"https://www.wikidata.org/wiki/Q7574054","display_name":"Spatial correlation","level":2,"score":0.43927961587905884},{"id":"https://openalex.org/C126042441","wikidata":"https://www.wikidata.org/wiki/Q1324888","display_name":"Frame (networking)","level":2,"score":0.4225504994392395},{"id":"https://openalex.org/C99498987","wikidata":"https://www.wikidata.org/wiki/Q2210247","display_name":"Noise (video)","level":3,"score":0.41898709535598755},{"id":"https://openalex.org/C2775918612","wikidata":"https://www.wikidata.org/wiki/Q994794","display_name":"Noma","level":3,"score":0.41446828842163086},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.3958895802497864},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.2950572967529297},{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.1408216953277588},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.13103294372558594},{"id":"https://openalex.org/C115961682","wikidata":"https://www.wikidata.org/wiki/Q860623","display_name":"Image (mathematics)","level":2,"score":0.08302509784698486},{"id":"https://openalex.org/C47696715","wikidata":"https://www.wikidata.org/wiki/Q233394","display_name":"Code division multiple access","level":2,"score":0.08101817965507507},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.0},{"id":"https://openalex.org/C170154142","wikidata":"https://www.wikidata.org/wiki/Q150737","display_name":"Architectural engineering","level":1,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/jiot.2021.3063476","is_oa":false,"landing_page_url":"https://doi.org/10.1109/jiot.2021.3063476","pdf_url":null,"source":{"id":"https://openalex.org/S2480266640","display_name":"IEEE Internet of Things Journal","issn_l":"2327-4662","issn":["2327-4662","2372-2541"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319808","host_organization_name":"Institute of Electrical and Electronics Engineers","host_organization_lineage":["https://openalex.org/P4310319808"],"host_organization_lineage_names":["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 Internet of Things Journal","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G1637248431","display_name":null,"funder_award_id":"61932014","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G3219342734","display_name":null,"funder_award_id":"YBN2019125163","funder_id":"https://openalex.org/F4320322183","funder_display_name":"Huawei Technologies"},{"id":"https://openalex.org/G6280663984","display_name":null,"funder_award_id":"2019YFB1803304","funder_id":"https://openalex.org/F4320335777","funder_display_name":"National Key Research and Development Program of China"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320322183","display_name":"Huawei Technologies","ror":"https://ror.org/00cmhce21"},{"id":"https://openalex.org/F4320335777","display_name":"National Key Research and Development Program of China","ror":null}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":27,"referenced_works":["https://openalex.org/W1543985333","https://openalex.org/W1938636034","https://openalex.org/W1997516668","https://openalex.org/W2001380973","https://openalex.org/W2030449718","https://openalex.org/W2078804453","https://openalex.org/W2114103671","https://openalex.org/W2160979406","https://openalex.org/W2320998982","https://openalex.org/W2344857408","https://openalex.org/W2560251073","https://openalex.org/W2706056020","https://openalex.org/W2802495557","https://openalex.org/W2811365745","https://openalex.org/W2883871151","https://openalex.org/W2890736047","https://openalex.org/W2894772806","https://openalex.org/W2896650246","https://openalex.org/W2900584518","https://openalex.org/W2919703071","https://openalex.org/W2942707460","https://openalex.org/W2952268029","https://openalex.org/W2963199294","https://openalex.org/W2994626336","https://openalex.org/W3024776269","https://openalex.org/W3089248281","https://openalex.org/W3100966058"],"related_works":["https://openalex.org/W3030525848","https://openalex.org/W4385197910","https://openalex.org/W2340639785","https://openalex.org/W4404253608","https://openalex.org/W3010814398","https://openalex.org/W4385197899","https://openalex.org/W3005957545","https://openalex.org/W2076432172","https://openalex.org/W4309235375","https://openalex.org/W2990488703"],"abstract_inverted_index":{"Exploiting":[0],"the":[1,29,38,59,62,66,103,124,134,141,150,182,195,201,207,214,220,229,232,235,240],"sparse":[2,78],"nature":[3],"of":[4,28,77,106,144,154,181,197,209,234],"user":[5,18,54,93,108,117,145,155],"activity,":[6,156],"compressed":[7],"sensing":[8],"(CS)":[9],"has":[10],"been":[11],"a":[12,81,90,127],"powerful":[13],"technique":[14,216],"to":[15,52,132,217],"realize":[16,174],"efficient":[17,175],"detection":[19,33,55,118,244],"in":[20,41,61,85],"grant-free":[21],"nonorthogonal":[22],"multiple":[23],"access":[24],"(NOMA).":[25],"However,":[26],"most":[27],"existing":[30,241],"CS-based":[31,242],"multiuser":[32,176,243],"schemes":[34],"merely":[35],"independently":[36],"incorporate":[37],"temporal":[39,104],"correlation":[40,46,105],"frame-based":[42],"transmission":[43],"or":[44],"spatial":[45],"induced":[47],"by":[48,58,73,101,138,204],"multiantenna":[49,111],"reception,":[50,112],"leading":[51],"unsatisfactory":[53],"performance.":[56,119],"Driven":[57],"observation":[60],"CS":[63,129,135],"theory":[64],"that":[65,186],"signal":[67],"recovery":[68],"performance":[69],"could":[70,114,173],"be":[71],"enhanced":[72,167],"an":[74,157],"increased":[75],"number":[76,196,208],"vectors":[79],"with":[80,110,239],"common":[82],"support":[83],"set,":[84],"this":[86],"article,":[87],"we":[88,121],"propose":[89],"novel":[91],"joint":[92],"activity":[94],"identification":[95],"and":[96,200,212,228],"channel":[97],"estimation":[98],"(JUICE)":[99],"framework":[100,237],"integrating":[102],"active":[107,198,210],"sets":[109],"which":[113,172],"achieve":[115],"superior":[116],"Specifically,":[120],"first":[122],"formulate":[123],"JUICE":[125],"as":[126],"Kronecker":[128],"(KCS)":[130],"problem":[131],"model":[133],"measurement":[136],"process,":[137],"fully":[139],"extracting":[140],"spatial-temporal":[142,152,165],"structure":[143,153,166],"activity.":[146],"Then,":[147],"based":[148],"on":[149],"mined":[151],"adaptive":[158,168],"subspace":[159,169],"pursuit":[160,170],"algorithm":[161,184],"is":[162,185,226],"developed,":[163],"i.e.,":[164],"(STS-ASP),":[171],"detection.":[177],"A":[178],"distinct":[179],"advantage":[180],"proposed":[183,236],"it":[187],"does":[188],"not":[189],"require":[190],"any":[191],"prior":[192],"knowledge":[193],"(e.g.,":[194],"users":[199,211],"noise":[202],"level),":[203],"adaptively":[205],"acquiring":[206],"employing":[213],"cross-validation":[215],"appropriately":[218],"terminate":[219],"iterative":[221],"procedures.":[222],"Extensive":[223],"experimental":[224],"evaluation":[225],"conducted,":[227],"results":[230],"corroborate":[231],"superiority":[233],"compared":[238],"methods.":[245]},"counts_by_year":[{"year":2024,"cited_by_count":4},{"year":2023,"cited_by_count":8},{"year":2022,"cited_by_count":4},{"year":2021,"cited_by_count":4}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
