{"id":"https://openalex.org/W3198287222","doi":"https://doi.org/10.1109/twc.2021.3108666","title":"Joint Constellation Design and Multiuser Detection for Grant-Free NOMA","display_name":"Joint Constellation Design and Multiuser Detection for Grant-Free NOMA","publication_year":2021,"publication_date":"2021-09-06","ids":{"openalex":"https://openalex.org/W3198287222","doi":"https://doi.org/10.1109/twc.2021.3108666","mag":"3198287222"},"language":"en","primary_location":{"id":"doi:10.1109/twc.2021.3108666","is_oa":false,"landing_page_url":"https://doi.org/10.1109/twc.2021.3108666","pdf_url":null,"source":{"id":"https://openalex.org/S63459445","display_name":"IEEE Transactions on Wireless Communications","issn_l":"1536-1276","issn":["1536-1276","1558-2248"],"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 Transactions on Wireless 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/A5023496945","display_name":"Zhe Ma","orcid":"https://orcid.org/0000-0001-6805-2139"},"institutions":[{"id":"https://openalex.org/I99065089","display_name":"Tsinghua University","ror":"https://ror.org/03cve4549","country_code":"CN","type":"education","lineage":["https://openalex.org/I99065089"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Zhe Ma","raw_affiliation_strings":["Department of Automation, State Key Laboratory of Intelligent Technologies and Systems, Beijing National Research Center for Information Science and Technology, Institute for Artificial Intelligence, Tsinghua University, Beijing, China"],"raw_orcid":"https://orcid.org/0000-0001-6805-2139","affiliations":[{"raw_affiliation_string":"Department of Automation, State Key Laboratory of Intelligent Technologies and Systems, Beijing National Research Center for Information Science and Technology, Institute for Artificial Intelligence, Tsinghua University, Beijing, China","institution_ids":["https://openalex.org/I99065089"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5074854979","display_name":"Wen Wu","orcid":"https://orcid.org/0000-0002-0458-1282"},"institutions":[{"id":"https://openalex.org/I151746483","display_name":"University of Waterloo","ror":"https://ror.org/01aff2v68","country_code":"CA","type":"education","lineage":["https://openalex.org/I151746483"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Wen Wu","raw_affiliation_strings":["Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, ON, Canada"],"raw_orcid":"https://orcid.org/0000-0002-0458-1282","affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, ON, Canada","institution_ids":["https://openalex.org/I151746483"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5086877493","display_name":"Mengnan Jian","orcid":null},"institutions":[{"id":"https://openalex.org/I180662265","display_name":"China Mobile (China)","ror":"https://ror.org/05gftfe97","country_code":"CN","type":"company","lineage":["https://openalex.org/I180662265"]},{"id":"https://openalex.org/I4210098582","display_name":"ZTE (China)","ror":"https://ror.org/00rjhhq63","country_code":"CN","type":"company","lineage":["https://openalex.org/I4210098582"]},{"id":"https://openalex.org/I4391767749","display_name":"State Key Laboratory of Mobile Networks and Mobile Multimedia Technology","ror":"https://ror.org/05cd55294","country_code":null,"type":"facility","lineage":["https://openalex.org/I4210098582","https://openalex.org/I4391767749"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Mengnan Jian","raw_affiliation_strings":["State Key Laboratory of Mobile Network and Mobile Multimedia Technology, Shenzhen, China","Algorithm Department, Wireless Product R&D Institute, ZTE Corporation, Shenzhen, China"],"raw_orcid":"https://orcid.org/0000-0002-6750-5690","affiliations":[{"raw_affiliation_string":"State Key Laboratory of Mobile Network and Mobile Multimedia Technology, Shenzhen, China","institution_ids":["https://openalex.org/I180662265","https://openalex.org/I4391767749"]},{"raw_affiliation_string":"Algorithm Department, Wireless Product R&D Institute, ZTE Corporation, Shenzhen, China","institution_ids":["https://openalex.org/I4210098582"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5050402661","display_name":"Feifei Gao","orcid":"https://orcid.org/0000-0001-8896-352X"},"institutions":[{"id":"https://openalex.org/I99065089","display_name":"Tsinghua University","ror":"https://ror.org/03cve4549","country_code":"CN","type":"education","lineage":["https://openalex.org/I99065089"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Feifei Gao","raw_affiliation_strings":["Department of Automation, State Key Laboratory of Intelligent Technologies and Systems, Beijing National Research Center for Information Science and Technology, Institute for Artificial Intelligence, Tsinghua University, Beijing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Automation, State Key Laboratory of Intelligent Technologies and Systems, Beijing National Research Center for Information Science and Technology, Institute for Artificial Intelligence, Tsinghua University, Beijing, China","institution_ids":["https://openalex.org/I99065089"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5100773343","display_name":"Xuemin Shen","orcid":"https://orcid.org/0000-0002-4140-287X"},"institutions":[{"id":"https://openalex.org/I151746483","display_name":"University of Waterloo","ror":"https://ror.org/01aff2v68","country_code":"CA","type":"education","lineage":["https://openalex.org/I151746483"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Xuemin Shen","raw_affiliation_strings":["Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, ON, Canada"],"raw_orcid":"https://orcid.org/0000-0002-4140-287X","affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of Waterloo, Waterloo, ON, Canada","institution_ids":["https://openalex.org/I151746483"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":5,"corresponding_author_ids":["https://openalex.org/A5023496945"],"corresponding_institution_ids":["https://openalex.org/I99065089"],"apc_list":null,"apc_paid":null,"fwci":1.1184,"has_fulltext":false,"cited_by_count":13,"citation_normalized_percentile":{"value":0.77570314,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":98},"biblio":{"volume":"21","issue":"3","first_page":"1973","last_page":"1988"},"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/T12131","display_name":"Wireless Signal Modulation Classification","score":0.9995999932289124,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10326","display_name":"Indoor and Outdoor Localization Technologies","score":0.9961000084877014,"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/autoencoder","display_name":"Autoencoder","score":0.8625534772872925},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7461864948272705},{"id":"https://openalex.org/keywords/joint","display_name":"Joint (building)","score":0.5685484409332275},{"id":"https://openalex.org/keywords/noma","display_name":"Noma","score":0.5553106665611267},{"id":"https://openalex.org/keywords/optimization-problem","display_name":"Optimization problem","score":0.4943857192993164},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.4776422083377838},{"id":"https://openalex.org/keywords/inference","display_name":"Inference","score":0.46934354305267334},{"id":"https://openalex.org/keywords/task","display_name":"Task (project management)","score":0.41580989956855774},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.4135798513889313},{"id":"https://openalex.org/keywords/deep-learning","display_name":"Deep learning","score":0.40789324045181274},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.35558825731277466},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.3260098993778229},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.18836921453475952},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.1560957431793213},{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.09204769134521484}],"concepts":[{"id":"https://openalex.org/C101738243","wikidata":"https://www.wikidata.org/wiki/Q786435","display_name":"Autoencoder","level":3,"score":0.8625534772872925},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7461864948272705},{"id":"https://openalex.org/C18555067","wikidata":"https://www.wikidata.org/wiki/Q8375051","display_name":"Joint (building)","level":2,"score":0.5685484409332275},{"id":"https://openalex.org/C2775918612","wikidata":"https://www.wikidata.org/wiki/Q994794","display_name":"Noma","level":3,"score":0.5553106665611267},{"id":"https://openalex.org/C137836250","wikidata":"https://www.wikidata.org/wiki/Q984063","display_name":"Optimization problem","level":2,"score":0.4943857192993164},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.4776422083377838},{"id":"https://openalex.org/C2776214188","wikidata":"https://www.wikidata.org/wiki/Q408386","display_name":"Inference","level":2,"score":0.46934354305267334},{"id":"https://openalex.org/C2780451532","wikidata":"https://www.wikidata.org/wiki/Q759676","display_name":"Task (project management)","level":2,"score":0.41580989956855774},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.4135798513889313},{"id":"https://openalex.org/C108583219","wikidata":"https://www.wikidata.org/wiki/Q197536","display_name":"Deep learning","level":2,"score":0.40789324045181274},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.35558825731277466},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.3260098993778229},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.18836921453475952},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.1560957431793213},{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.09204769134521484},{"id":"https://openalex.org/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","level":0,"score":0.0},{"id":"https://openalex.org/C187736073","wikidata":"https://www.wikidata.org/wiki/Q2920921","display_name":"Management","level":1,"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/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/twc.2021.3108666","is_oa":false,"landing_page_url":"https://doi.org/10.1109/twc.2021.3108666","pdf_url":null,"source":{"id":"https://openalex.org/S63459445","display_name":"IEEE Transactions on Wireless Communications","issn_l":"1536-1276","issn":["1536-1276","1558-2248"],"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 Transactions on Wireless Communications","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G463011087","display_name":null,"funder_award_id":"2018AAA0102401","funder_id":"https://openalex.org/F4320335777","funder_display_name":"National Key Research and Development Program of China"},{"id":"https://openalex.org/G8114187719","display_name":null,"funder_award_id":"61831013","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"},{"id":"https://openalex.org/F4320335777","display_name":"National Key Research and Development Program of China","ror":null}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":59,"referenced_works":["https://openalex.org/W1607198972","https://openalex.org/W2042519026","https://openalex.org/W2059956682","https://openalex.org/W2137983211","https://openalex.org/W2160512492","https://openalex.org/W2163322153","https://openalex.org/W2464137485","https://openalex.org/W2467604901","https://openalex.org/W2548516812","https://openalex.org/W2624871570","https://openalex.org/W2734408173","https://openalex.org/W2735475593","https://openalex.org/W2736068844","https://openalex.org/W2738538347","https://openalex.org/W2740641223","https://openalex.org/W2748265480","https://openalex.org/W2792046898","https://openalex.org/W2794723495","https://openalex.org/W2801111218","https://openalex.org/W2887860413","https://openalex.org/W2897198085","https://openalex.org/W2897332136","https://openalex.org/W2900805756","https://openalex.org/W2919115771","https://openalex.org/W2922048308","https://openalex.org/W2945345905","https://openalex.org/W2962732150","https://openalex.org/W2962896080","https://openalex.org/W2963504849","https://openalex.org/W2963593908","https://openalex.org/W2963907541","https://openalex.org/W2964056649","https://openalex.org/W2966182616","https://openalex.org/W2968026845","https://openalex.org/W2971360792","https://openalex.org/W2974178109","https://openalex.org/W2999562137","https://openalex.org/W3005602582","https://openalex.org/W3008026851","https://openalex.org/W3011934092","https://openalex.org/W3016146955","https://openalex.org/W3022195470","https://openalex.org/W3023243379","https://openalex.org/W3027993135","https://openalex.org/W3035982503","https://openalex.org/W3047546935","https://openalex.org/W3080764280","https://openalex.org/W3082607014","https://openalex.org/W3097670482","https://openalex.org/W3110381504","https://openalex.org/W4297736277","https://openalex.org/W6640963894","https://openalex.org/W6720208624","https://openalex.org/W6739365718","https://openalex.org/W6739901393","https://openalex.org/W6742348326","https://openalex.org/W6744627333","https://openalex.org/W6750964650","https://openalex.org/W6751810238"],"related_works":["https://openalex.org/W3030525848","https://openalex.org/W4385197910","https://openalex.org/W2340639785","https://openalex.org/W3010814398","https://openalex.org/W4385197899","https://openalex.org/W3005957545","https://openalex.org/W2076432172","https://openalex.org/W4309235375","https://openalex.org/W2669956259","https://openalex.org/W4249005693"],"abstract_inverted_index":{"As":[0],"a":[1,36,105,113,167],"promising":[2],"solution":[3],"for":[4,63],"massive":[5],"machine-type":[6],"communication,":[7],"grant-free":[8],"non-orthogonal":[9],"multiple":[10],"access":[11],"(GF-NOMA)":[12],"has":[13],"received":[14],"considerable":[15],"attention":[16],"in":[17,30,35],"recent":[18],"years.":[19],"However,":[20],"the":[21,56,79,84,99,119,122,128,132,181],"multidimensional":[22],"constellation":[23,123],"design":[24],"(MCD)":[25],"and":[26,40,47,61,135],"multiuser":[27],"detection":[28,156],"(MUD)":[29],"GF-NOMA":[31],"are":[32],"usually":[33],"optimized":[34],"<italic":[37],"xmlns:mml=\"http://www.w3.org/1998/Math/MathML\"":[38],"xmlns:xlink=\"http://www.w3.org/1999/xlink\">divide":[39],"conquer</i>":[41],"way,":[42],"leading":[43],"to":[44,78,92,97,117,149,173,188],"local":[45],"optima":[46],"performance":[48],"degradation.":[49],"To":[50],"address":[51],"this":[52,143],"issue,":[53],"we":[54,90,103],"investigate":[55],"joint":[57,67],"optimization":[58,68,85],"of":[59,121,131,163],"MCD":[60],"MUD":[62],"GF-NOMA.":[64],"The":[65],"formulated":[66],"is":[69,75,147,171],"based":[70],"on":[71],"variational":[72,108,114],"inference,":[73],"which":[74],"intractable":[76],"due":[77],"signal":[80],"superimposition":[81],"that":[82,111,180],"makes":[83],"variables":[86],"intricately":[87],"coupled.":[88],"Then,":[89],"resort":[91],"end-to-end":[93],"deep":[94],"learning":[95,146],"(DL)":[96],"obtain":[98],"optimal":[100],"solution.":[101],"Specifically,":[102],"propose":[104],"DL-based":[106],"multi-task":[107,145,168],"autoencoder":[109,115],"(Mul-VAE)":[110],"adopts":[112],"network":[116,134],"optimize":[118],"distribution":[120],"points.":[124],"We":[125],"further":[126],"derive":[127],"loss":[129],"function":[130],"proposed":[133,182],"analyze":[136],"it":[137],"from":[138],"an":[139],"information-theoretic":[140],"perspective.":[141],"On":[142],"basis,":[144],"employed":[148],"deal":[150],"with":[151],"mutually":[152],"conflicting":[153],"yet":[154],"related":[155],"processes.":[157],"Besides,":[158],"taking":[159],"heterogeneous":[160],"transmission":[161],"rates":[162],"users":[164],"into":[165],"account,":[166],"prioritizing":[169],"strategy":[170],"designed":[172],"balance":[174],"training":[175],"performance.":[176],"Simulation":[177],"results":[178],"reveal":[179],"method":[183],"enables":[184],"significant":[185],"gains":[186],"compared":[187],"state-of-the-art":[189],"techniques.":[190]},"counts_by_year":[{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":4},{"year":2023,"cited_by_count":6},{"year":2022,"cited_by_count":1}],"updated_date":"2026-03-27T05:58:40.876381","created_date":"2025-10-10T00:00:00"}