{"id":"https://openalex.org/W2964128965","doi":"https://doi.org/10.1109/vtcspring.2018.8417833","title":"Active User Detection of Uplink Grant-Free SCMA in Frequency Selective Channel","display_name":"Active User Detection of Uplink Grant-Free SCMA in Frequency Selective Channel","publication_year":2018,"publication_date":"2018-06-01","ids":{"openalex":"https://openalex.org/W2964128965","doi":"https://doi.org/10.1109/vtcspring.2018.8417833","mag":"2964128965"},"language":"en","primary_location":{"id":"doi:10.1109/vtcspring.2018.8417833","is_oa":false,"landing_page_url":"https://doi.org/10.1109/vtcspring.2018.8417833","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2018 IEEE 87th Vehicular Technology Conference (VTC Spring)","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/A5101844320","display_name":"Feilong Wang","orcid":"https://orcid.org/0000-0001-6216-5466"},"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":"Feilong Wang","raw_affiliation_strings":["BUPT, Intelligent Computing and Communication Lab, Beijing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"BUPT, Intelligent Computing and Communication Lab, Beijing, China","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100741683","display_name":"Yuyan Zhang","orcid":"https://orcid.org/0000-0002-6062-6668"},"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":"Yuyan Zhang","raw_affiliation_strings":["BUPT, Intelligent Computing and Communication Lab, Beijing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"BUPT, Intelligent Computing and Communication Lab, Beijing, China","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5020517199","display_name":"Hui Zhao","orcid":"https://orcid.org/0000-0001-6786-6560"},"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":"Hui Zhao","raw_affiliation_strings":["BUPT, Intelligent Computing and Communication Lab, Beijing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"BUPT, Intelligent Computing and Communication Lab, Beijing, China","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5106223300","display_name":"Hanyuan Huang","orcid":null},"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":"Hanyuan Huang","raw_affiliation_strings":["BUPT, Intelligent Computing and Communication Lab, Beijing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"BUPT, Intelligent Computing and Communication Lab, Beijing, China","institution_ids":["https://openalex.org/I139759216"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5100336905","display_name":"Jing Li","orcid":"https://orcid.org/0000-0002-2469-1374"},"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":"Jing Li","raw_affiliation_strings":["BUPT, Intelligent Computing and Communication Lab, Beijing, China"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"BUPT, Intelligent Computing and Communication Lab, Beijing, China","institution_ids":["https://openalex.org/I139759216"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I139759216"],"apc_list":null,"apc_paid":null,"fwci":1.5586,"has_fulltext":false,"cited_by_count":4,"citation_normalized_percentile":{"value":0.83826063,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":93,"max":96},"biblio":{"volume":"5","issue":null,"first_page":"1","last_page":"6"},"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/T10500","display_name":"Sparse and Compressive Sensing Techniques","score":0.9986000061035156,"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/T10964","display_name":"Wireless Communication Security Techniques","score":0.9973999857902527,"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/telecommunications-link","display_name":"Telecommunications link","score":0.8700213432312012},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7374367117881775},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.6865689158439636},{"id":"https://openalex.org/keywords/decoding-methods","display_name":"Decoding methods","score":0.5959606170654297},{"id":"https://openalex.org/keywords/fading","display_name":"Fading","score":0.5547376275062561},{"id":"https://openalex.org/keywords/detector","display_name":"Detector","score":0.5355247259140015},{"id":"https://openalex.org/keywords/user-equipment","display_name":"User equipment","score":0.5182235240936279},{"id":"https://openalex.org/keywords/code","display_name":"Code (set theory)","score":0.5117344856262207},{"id":"https://openalex.org/keywords/key","display_name":"Key (lock)","score":0.47851574420928955},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.432994544506073},{"id":"https://openalex.org/keywords/control-channel","display_name":"Control channel","score":0.41512736678123474},{"id":"https://openalex.org/keywords/message-passing","display_name":"Message passing","score":0.4103699326515198},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.36793053150177},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.23712381720542908},{"id":"https://openalex.org/keywords/distributed-computing","display_name":"Distributed computing","score":0.12930303812026978},{"id":"https://openalex.org/keywords/base-station","display_name":"Base station","score":0.1158515214920044},{"id":"https://openalex.org/keywords/computer-security","display_name":"Computer security","score":0.10729894042015076}],"concepts":[{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.8700213432312012},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7374367117881775},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.6865689158439636},{"id":"https://openalex.org/C57273362","wikidata":"https://www.wikidata.org/wiki/Q576722","display_name":"Decoding methods","level":2,"score":0.5959606170654297},{"id":"https://openalex.org/C81978471","wikidata":"https://www.wikidata.org/wiki/Q1196572","display_name":"Fading","level":3,"score":0.5547376275062561},{"id":"https://openalex.org/C94915269","wikidata":"https://www.wikidata.org/wiki/Q1834857","display_name":"Detector","level":2,"score":0.5355247259140015},{"id":"https://openalex.org/C2781327853","wikidata":"https://www.wikidata.org/wiki/Q3552547","display_name":"User equipment","level":3,"score":0.5182235240936279},{"id":"https://openalex.org/C2776760102","wikidata":"https://www.wikidata.org/wiki/Q5139990","display_name":"Code (set theory)","level":3,"score":0.5117344856262207},{"id":"https://openalex.org/C26517878","wikidata":"https://www.wikidata.org/wiki/Q228039","display_name":"Key (lock)","level":2,"score":0.47851574420928955},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.432994544506073},{"id":"https://openalex.org/C157607044","wikidata":"https://www.wikidata.org/wiki/Q5165851","display_name":"Control channel","level":3,"score":0.41512736678123474},{"id":"https://openalex.org/C854659","wikidata":"https://www.wikidata.org/wiki/Q1859284","display_name":"Message passing","level":2,"score":0.4103699326515198},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.36793053150177},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.23712381720542908},{"id":"https://openalex.org/C120314980","wikidata":"https://www.wikidata.org/wiki/Q180634","display_name":"Distributed computing","level":1,"score":0.12930303812026978},{"id":"https://openalex.org/C68649174","wikidata":"https://www.wikidata.org/wiki/Q1379116","display_name":"Base station","level":2,"score":0.1158515214920044},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.10729894042015076},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.0},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/vtcspring.2018.8417833","is_oa":false,"landing_page_url":"https://doi.org/10.1109/vtcspring.2018.8417833","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2018 IEEE 87th Vehicular Technology Conference (VTC Spring)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":13,"referenced_works":["https://openalex.org/W2042210493","https://openalex.org/W2042519026","https://openalex.org/W2075506710","https://openalex.org/W2087544022","https://openalex.org/W2122315118","https://openalex.org/W2156374892","https://openalex.org/W2164452299","https://openalex.org/W2167688066","https://openalex.org/W2189528172","https://openalex.org/W2344857408","https://openalex.org/W2508031406","https://openalex.org/W2582955807","https://openalex.org/W2756178155"],"related_works":["https://openalex.org/W3006920049","https://openalex.org/W2144880008","https://openalex.org/W4200022504","https://openalex.org/W4200077209","https://openalex.org/W2520083416","https://openalex.org/W2957675536","https://openalex.org/W2995716320","https://openalex.org/W4376480765","https://openalex.org/W1490972920","https://openalex.org/W4313169359"],"abstract_inverted_index":{"Massive":[0],"machine":[1],"type":[2],"communication":[3],"(mMTC)":[4],"is":[5,19,84,108,139],"one":[6],"of":[7,26,35,63,100,121,151,162,166,180,191],"the":[8,41,61,73,87,97,105,112,119,152,157,163,172,178,181,189],"three":[9],"fifth":[10],"generation":[11],"mobile":[12],"networking":[13],"(5G)":[14],"key":[15],"usage":[16],"scenarios,":[17],"which":[18,138],"characterized":[20],"by":[21,75],"a":[22,31,76,128,185],"very":[23],"large":[24],"number":[25],"connected":[27],"devices":[28],"typically":[29],"transmitting":[30],"relatively":[32],"low":[33],"volume":[34],"non-delay":[36],"sensitive":[37],"data.":[38],"To":[39],"support":[40],"mMTC":[42],"communication,":[43],"an":[44],"uplink":[45],"(UL)":[46],"grant-":[47],"free":[48],"sparse":[49],"code":[50],"multiple":[51],"access":[52],"(SCMA)":[53],"system":[54],"has":[55,184],"been":[56],"proposed.":[57],"In":[58],"this":[59],"system,":[60],"knowledge":[62],"user":[64],"equipments'":[65],"(UEs')":[66],"status":[67,165],"should":[68],"be":[69],"obtained":[70],"before":[71],"decoding":[72],"data":[74],"message":[77],"passing":[78],"algorithm":[79],"(MPA).":[80],"An":[81],"existing":[82],"solution":[83],"to":[85,92],"use":[86,150],"compressive":[88],"sensing":[89],"(CS)":[90],"theory":[91],"detect":[93],"active":[94,122,134,173],"UEs":[95,123,174],"under":[96],"assumed":[98,106],"condition":[99,107],"flat":[101],"fading":[102],"channel.":[103],"But":[104],"not":[109],"suitable":[110],"for":[111],"frequency":[113,142],"selective":[114,143],"channel":[115,144,153],"and":[116,155],"will":[117],"decrease":[118],"accuracy":[120],"detection.":[124],"This":[125],"paper":[126],"proposes":[127],"new":[129],"simple":[130],"module":[131,169,183],"named":[132],"refined":[133],"UE":[135],"detector":[136],"(RAUD),":[137],"based":[140],"on":[141,188],"gain":[145,154],"analyzing.":[146],"By":[147],"making":[148],"full":[149],"analyzing":[156],"difference":[158],"between":[159],"characteristic":[160],"values":[161],"two":[164],"UEs,":[167],"RAUD":[168],"can":[170],"enhance":[171],"detection":[175],"accuracy.":[176],"Meanwhile,":[177],"addition":[179],"proposed":[182],"negligible":[186],"effect":[187],"complexity":[190],"UL":[192],"grant-free":[193],"SCMA":[194],"receiver.":[195]},"counts_by_year":[{"year":2021,"cited_by_count":2},{"year":2019,"cited_by_count":2}],"updated_date":"2026-07-29T14:22:42.915294","created_date":"2025-10-10T00:00:00"}