{"id":"https://openalex.org/W4200305003","doi":"https://doi.org/10.1109/wcsp52459.2021.9613257","title":"OFDMA based Massive Grant-free Transmission in the Presence of Timing Offset","display_name":"OFDMA based Massive Grant-free Transmission in the Presence of Timing Offset","publication_year":2021,"publication_date":"2021-10-20","ids":{"openalex":"https://openalex.org/W4200305003","doi":"https://doi.org/10.1109/wcsp52459.2021.9613257"},"language":"en","primary_location":{"id":"doi:10.1109/wcsp52459.2021.9613257","is_oa":false,"landing_page_url":"https://doi.org/10.1109/wcsp52459.2021.9613257","pdf_url":null,"source":{"id":"https://openalex.org/S4363607893","display_name":"2021 13th International Conference on Wireless Communications and Signal Processing (WCSP)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"conference"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2021 13th International Conference on Wireless Communications and Signal Processing (WCSP)","raw_type":"proceedings-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/A5035438144","display_name":"Gangle Sun","orcid":"https://orcid.org/0000-0002-9663-1442"},"institutions":[{"id":"https://openalex.org/I76569877","display_name":"Southeast University","ror":"https://ror.org/04ct4d772","country_code":"CN","type":"education","lineage":["https://openalex.org/I76569877"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Gangle Sun","raw_affiliation_strings":["National Mobile Communications Research Laboratory, Southeast University, Nanjing, China"],"affiliations":[{"raw_affiliation_string":"National Mobile Communications Research Laboratory, Southeast University, Nanjing, China","institution_ids":["https://openalex.org/I76569877"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5101546250","display_name":"Yining Li","orcid":"https://orcid.org/0000-0003-4761-2293"},"institutions":[{"id":"https://openalex.org/I76569877","display_name":"Southeast University","ror":"https://ror.org/04ct4d772","country_code":"CN","type":"education","lineage":["https://openalex.org/I76569877"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yining Li","raw_affiliation_strings":["National Mobile Communications Research Laboratory, Southeast University, Nanjing, China"],"affiliations":[{"raw_affiliation_string":"National Mobile Communications Research Laboratory, Southeast University, Nanjing, China","institution_ids":["https://openalex.org/I76569877"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5029033908","display_name":"Xinping Yi","orcid":"https://orcid.org/0000-0001-5163-2364"},"institutions":[{"id":"https://openalex.org/I146655781","display_name":"University of Liverpool","ror":"https://ror.org/04xs57h96","country_code":"GB","type":"education","lineage":["https://openalex.org/I146655781"]}],"countries":["GB"],"is_corresponding":false,"raw_author_name":"Xinping Yi","raw_affiliation_strings":["Department of Electrical Engineering and Electronics, University of Liverpool, Liverpool, U.K"],"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering and Electronics, University of Liverpool, Liverpool, U.K","institution_ids":["https://openalex.org/I146655781"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100636788","display_name":"Wenjin Wang","orcid":"https://orcid.org/0000-0002-5600-6589"},"institutions":[{"id":"https://openalex.org/I76569877","display_name":"Southeast University","ror":"https://ror.org/04ct4d772","country_code":"CN","type":"education","lineage":["https://openalex.org/I76569877"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Wenjin Wang","raw_affiliation_strings":["National Mobile Communications Research Laboratory, Southeast University, Nanjing, China"],"affiliations":[{"raw_affiliation_string":"National Mobile Communications Research Laboratory, Southeast University, Nanjing, China","institution_ids":["https://openalex.org/I76569877"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5050692023","display_name":"Xiqi Gao","orcid":"https://orcid.org/0000-0001-9107-6593"},"institutions":[{"id":"https://openalex.org/I76569877","display_name":"Southeast University","ror":"https://ror.org/04ct4d772","country_code":"CN","type":"education","lineage":["https://openalex.org/I76569877"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Xiqi Gao","raw_affiliation_strings":["National Mobile Communications Research Laboratory, Southeast University, Nanjing, China"],"affiliations":[{"raw_affiliation_string":"National Mobile Communications Research Laboratory, Southeast University, Nanjing, China","institution_ids":["https://openalex.org/I76569877"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5100435939","display_name":"Lei Wang","orcid":"https://orcid.org/0000-0002-4994-805X"},"institutions":[{"id":"https://openalex.org/I2250955327","display_name":"Huawei Technologies (China)","ror":"https://ror.org/00cmhce21","country_code":"CN","type":"company","lineage":["https://openalex.org/I2250955327"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Lei Wang","raw_affiliation_strings":["Huawei Technologies, Co. Ltd., Shanghai, China"],"affiliations":[{"raw_affiliation_string":"Huawei Technologies, Co. Ltd., Shanghai, China","institution_ids":["https://openalex.org/I2250955327"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":6,"corresponding_author_ids":["https://openalex.org/A5035438144"],"corresponding_institution_ids":["https://openalex.org/I76569877"],"apc_list":null,"apc_paid":null,"fwci":3.4619,"has_fulltext":false,"cited_by_count":10,"citation_normalized_percentile":{"value":0.94364144,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":97},"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10148","display_name":"Advanced MIMO Systems Optimization","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/T10148","display_name":"Advanced MIMO Systems Optimization","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/T10125","display_name":"Advanced Wireless Communication Techniques","score":0.9997000098228455,"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/T12146","display_name":"Power Line Communications and Noise","score":0.9997000098228455,"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":0.78304523229599},{"id":"https://openalex.org/keywords/orthogonal-frequency-division-multiple-access","display_name":"Orthogonal frequency-division multiple access","score":0.7671020030975342},{"id":"https://openalex.org/keywords/asynchronous-communication","display_name":"Asynchronous communication","score":0.7057473659515381},{"id":"https://openalex.org/keywords/offset","display_name":"Offset (computer science)","score":0.6992014646530151},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.530451238155365},{"id":"https://openalex.org/keywords/orthogonal-frequency-division-multiplexing","display_name":"Orthogonal frequency-division multiplexing","score":0.5003077983856201},{"id":"https://openalex.org/keywords/compressed-sensing","display_name":"Compressed sensing","score":0.47766053676605225},{"id":"https://openalex.org/keywords/carrier-frequency-offset","display_name":"Carrier frequency offset","score":0.47291287779808044},{"id":"https://openalex.org/keywords/frequency-division-multiple-access","display_name":"Frequency-division multiple access","score":0.43373504281044006},{"id":"https://openalex.org/keywords/message-passing","display_name":"Message passing","score":0.42679935693740845},{"id":"https://openalex.org/keywords/transmission","display_name":"Transmission (telecommunications)","score":0.4213939309120178},{"id":"https://openalex.org/keywords/joint","display_name":"Joint (building)","score":0.4168221354484558},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.41568320989608765},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.3990265130996704},{"id":"https://openalex.org/keywords/frequency-offset","display_name":"Frequency offset","score":0.35614919662475586},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.29899588227272034},{"id":"https://openalex.org/keywords/distributed-computing","display_name":"Distributed computing","score":0.24281266331672668},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.15346699953079224},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.09236803650856018}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.78304523229599},{"id":"https://openalex.org/C2775907427","wikidata":"https://www.wikidata.org/wiki/Q2697649","display_name":"Orthogonal frequency-division multiple access","level":4,"score":0.7671020030975342},{"id":"https://openalex.org/C151319957","wikidata":"https://www.wikidata.org/wiki/Q752739","display_name":"Asynchronous communication","level":2,"score":0.7057473659515381},{"id":"https://openalex.org/C175291020","wikidata":"https://www.wikidata.org/wiki/Q1156822","display_name":"Offset (computer science)","level":2,"score":0.6992014646530151},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.530451238155365},{"id":"https://openalex.org/C40409654","wikidata":"https://www.wikidata.org/wiki/Q375889","display_name":"Orthogonal frequency-division multiplexing","level":3,"score":0.5003077983856201},{"id":"https://openalex.org/C124851039","wikidata":"https://www.wikidata.org/wiki/Q2665459","display_name":"Compressed sensing","level":2,"score":0.47766053676605225},{"id":"https://openalex.org/C2776108382","wikidata":"https://www.wikidata.org/wiki/Q25111451","display_name":"Carrier frequency offset","level":5,"score":0.47291287779808044},{"id":"https://openalex.org/C2776208322","wikidata":"https://www.wikidata.org/wiki/Q844071","display_name":"Frequency-division multiple access","level":4,"score":0.43373504281044006},{"id":"https://openalex.org/C854659","wikidata":"https://www.wikidata.org/wiki/Q1859284","display_name":"Message passing","level":2,"score":0.42679935693740845},{"id":"https://openalex.org/C761482","wikidata":"https://www.wikidata.org/wiki/Q118093","display_name":"Transmission (telecommunications)","level":2,"score":0.4213939309120178},{"id":"https://openalex.org/C18555067","wikidata":"https://www.wikidata.org/wiki/Q8375051","display_name":"Joint (building)","level":2,"score":0.4168221354484558},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.41568320989608765},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.3990265130996704},{"id":"https://openalex.org/C49319798","wikidata":"https://www.wikidata.org/wiki/Q5502874","display_name":"Frequency offset","level":4,"score":0.35614919662475586},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.29899588227272034},{"id":"https://openalex.org/C120314980","wikidata":"https://www.wikidata.org/wiki/Q180634","display_name":"Distributed computing","level":1,"score":0.24281266331672668},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.15346699953079224},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.09236803650856018},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","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}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/wcsp52459.2021.9613257","is_oa":false,"landing_page_url":"https://doi.org/10.1109/wcsp52459.2021.9613257","pdf_url":null,"source":{"id":"https://openalex.org/S4363607893","display_name":"2021 13th International Conference on Wireless Communications and Signal Processing (WCSP)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"conference"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2021 13th International Conference on Wireless Communications and Signal Processing (WCSP)","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":22,"referenced_works":["https://openalex.org/W1909826856","https://openalex.org/W2020282020","https://openalex.org/W2054692642","https://openalex.org/W2103972037","https://openalex.org/W2104214294","https://openalex.org/W2134295053","https://openalex.org/W2137813581","https://openalex.org/W2166670884","https://openalex.org/W2318485605","https://openalex.org/W2338465892","https://openalex.org/W2492495631","https://openalex.org/W2784331297","https://openalex.org/W2890736047","https://openalex.org/W2942034734","https://openalex.org/W2958747101","https://openalex.org/W2963717880","https://openalex.org/W2966540897","https://openalex.org/W3001370401","https://openalex.org/W3100505697","https://openalex.org/W3102437242","https://openalex.org/W3133692331","https://openalex.org/W3145775433"],"related_works":["https://openalex.org/W2884849751","https://openalex.org/W1486522140","https://openalex.org/W3190354038","https://openalex.org/W2093099276","https://openalex.org/W2065600682","https://openalex.org/W2789566811","https://openalex.org/W1836907912","https://openalex.org/W2087148214","https://openalex.org/W2051220555","https://openalex.org/W2166055722"],"abstract_inverted_index":{"In":[0,33],"the":[1,10,29,34,37,45,48,55,61,89,112,123,126,133],"massive":[2],"grant-free":[3,130],"orthogonal":[4],"frequency":[5],"division":[6],"multiple":[7,71],"access":[8],"(OFDMA),":[9],"timing":[11,38,59,136],"offsets":[12],"between":[13],"users":[14],"impose":[15],"new":[16],"challenges":[17],"on":[18,47],"joint":[19,62],"active":[20],"user":[21],"detection":[22],"(AUD)":[23],"and":[24],"channel":[25],"estimation":[26,63],"(CE)":[27],"for":[28],"subsequent":[30],"data":[31],"recovery.":[32],"asynchronous":[35],"OFDMA,":[36],"offset":[39],"effects":[40],"can":[41,65],"be":[42,66,86],"modeled":[43],"as":[44,68,116],"phase-shifting":[46],"pilot":[49],"matrix.":[50],"As":[51],"such,":[52],"by":[53,88],"constructing":[54],"measurement":[56,72],"matrix":[57],"with":[58,77],"offsets,":[60],"problem":[64,76],"formulated":[67],"a":[69,82,117],"generalized":[70,104],"vector":[73],"(MMV)":[74],"recovery":[75],"structured":[78,83,103],"sparsity.":[79],"However,":[80],"such":[81],"sparsity":[84],"cannot":[85],"tackled":[87],"existing":[90],"compressed":[91],"sensing":[92],"(CS)":[93],"techniques.":[94],"To":[95],"address":[96],"this":[97],"issue,":[98],"we":[99],"develop":[100],"an":[101],"efficient":[102],"approximate":[105],"message":[106],"passing":[107],"(S-GAMP)":[108],"algorithm,":[109],"which":[110],"includes":[111],"parallel":[113],"AMP-MMV":[114],"algorithm":[115,128],"particular":[118],"case.":[119],"Simulation":[120],"results":[121],"confirm":[122],"superiority":[124],"of":[125,135],"proposed":[127],"in":[129,132],"OFDMA":[131],"presence":[134],"offset.":[137]},"counts_by_year":[{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":3},{"year":2023,"cited_by_count":2},{"year":2022,"cited_by_count":1},{"year":2021,"cited_by_count":2}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}