{"id":"https://openalex.org/W4312922447","doi":"https://doi.org/10.1109/twc.2022.3211967","title":"Asynchronous Activity Detection for Cell-Free Massive MIMO: From Centralized to Distributed Algorithms","display_name":"Asynchronous Activity Detection for Cell-Free Massive MIMO: From Centralized to Distributed Algorithms","publication_year":2022,"publication_date":"2022-10-11","ids":{"openalex":"https://openalex.org/W4312922447","doi":"https://doi.org/10.1109/twc.2022.3211967"},"language":"en","primary_location":{"id":"doi:10.1109/twc.2022.3211967","is_oa":false,"landing_page_url":"https://doi.org/10.1109/twc.2022.3211967","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/A5100421710","display_name":"Yang Li","orcid":"https://orcid.org/0000-0003-1112-057X"},"institutions":[{"id":"https://openalex.org/I21193070","display_name":"Beijing Jiaotong University","ror":"https://ror.org/01yj56c84","country_code":"CN","type":"education","lineage":["https://openalex.org/I21193070"]},{"id":"https://openalex.org/I4210099586","display_name":"Shenzhen Research Institute of Big Data","ror":"https://ror.org/00z1gwf89","country_code":"CN","type":"education","lineage":["https://openalex.org/I4210099586"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Yang Li","raw_affiliation_strings":["Shenzhen Research Institute of Big Data, Shenzhen, China","State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, Beijing, China"],"raw_orcid":"https://orcid.org/0000-0003-1112-057X","affiliations":[{"raw_affiliation_string":"Shenzhen Research Institute of Big Data, Shenzhen, China","institution_ids":["https://openalex.org/I4210099586"]},{"raw_affiliation_string":"State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, Beijing, China","institution_ids":["https://openalex.org/I21193070"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5090195902","display_name":"Qingfeng Lin","orcid":"https://orcid.org/0000-0003-0181-7437"},"institutions":[{"id":"https://openalex.org/I889458895","display_name":"University of Hong Kong","ror":"https://ror.org/02zhqgq86","country_code":"HK","type":"education","lineage":["https://openalex.org/I889458895"]}],"countries":["HK"],"is_corresponding":false,"raw_author_name":"Qingfeng Lin","raw_affiliation_strings":["Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam, Hong Kong"],"raw_orcid":"https://orcid.org/0000-0003-0181-7437","affiliations":[{"raw_affiliation_string":"Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam, Hong Kong","institution_ids":["https://openalex.org/I889458895"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5020753840","display_name":"Ya\u2010Feng Liu","orcid":"https://orcid.org/0000-0002-9684-9150"},"institutions":[{"id":"https://openalex.org/I19820366","display_name":"Chinese Academy of Sciences","ror":"https://ror.org/034t30j35","country_code":"CN","type":"government","lineage":["https://openalex.org/I19820366"]},{"id":"https://openalex.org/I4210120485","display_name":"Academy of Mathematics and Systems Science","ror":"https://ror.org/02jkmyk67","country_code":"CN","type":"facility","lineage":["https://openalex.org/I19820366","https://openalex.org/I4210120485"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Ya-Feng Liu","raw_affiliation_strings":["State Key Laboratory of Scientific and Engineering Computing, Institute of Computational Mathematics and Scientific/ Engineering Computing, Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing, China"],"raw_orcid":"https://orcid.org/0000-0002-9684-9150","affiliations":[{"raw_affiliation_string":"State Key Laboratory of Scientific and Engineering Computing, Institute of Computational Mathematics and Scientific/ Engineering Computing, Academy of Mathematics and Systems Science, Chinese Academy of Sciences, Beijing, China","institution_ids":["https://openalex.org/I4210120485","https://openalex.org/I19820366"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100620739","display_name":"Bo Ai","orcid":"https://orcid.org/0000-0001-6850-0595"},"institutions":[{"id":"https://openalex.org/I21193070","display_name":"Beijing Jiaotong University","ror":"https://ror.org/01yj56c84","country_code":"CN","type":"education","lineage":["https://openalex.org/I21193070"]},{"id":"https://openalex.org/I38877650","display_name":"Zhengzhou University","ror":"https://ror.org/04ypx8c21","country_code":"CN","type":"education","lineage":["https://openalex.org/I38877650"]},{"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":"Bo Ai","raw_affiliation_strings":["State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, Beijing, China","Henan Joint International Research Laboratory of Intelligent Networking and Data Analysis, Zhengzhou University, Zhengzhou, China","Peng Cheng Laboratory, Shenzhen, China"],"raw_orcid":"https://orcid.org/0000-0001-6850-0595","affiliations":[{"raw_affiliation_string":"State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, Beijing, China","institution_ids":["https://openalex.org/I21193070"]},{"raw_affiliation_string":"Henan Joint International Research Laboratory of Intelligent Networking and Data Analysis, Zhengzhou University, Zhengzhou, China","institution_ids":["https://openalex.org/I38877650"]},{"raw_affiliation_string":"Peng Cheng Laboratory, Shenzhen, China","institution_ids":["https://openalex.org/I4210136793"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5085964667","display_name":"Yik\u2010Chung Wu","orcid":"https://orcid.org/0000-0002-2738-0387"},"institutions":[{"id":"https://openalex.org/I889458895","display_name":"University of Hong Kong","ror":"https://ror.org/02zhqgq86","country_code":"HK","type":"education","lineage":["https://openalex.org/I889458895"]}],"countries":["HK"],"is_corresponding":false,"raw_author_name":"Yik-Chung Wu","raw_affiliation_strings":["Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam, Hong Kong"],"raw_orcid":"https://orcid.org/0000-0002-2738-0387","affiliations":[{"raw_affiliation_string":"Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam, Hong Kong","institution_ids":["https://openalex.org/I889458895"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":7,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":3.7294,"has_fulltext":false,"cited_by_count":51,"citation_normalized_percentile":{"value":0.94315036,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":100},"biblio":{"volume":"22","issue":"4","first_page":"2477","last_page":"2492"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11932","display_name":"Wireless Body Area Networks","score":0.9997000098228455,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical 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/T11932","display_name":"Wireless Body Area Networks","score":0.9997000098228455,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical 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/T12079","display_name":"IoT Networks and Protocols","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/T11458","display_name":"Advanced Wireless Communication Technologies","score":0.9988999962806702,"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/asynchronous-communication","display_name":"Asynchronous communication","score":0.8756636381149292},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.816810667514801},{"id":"https://openalex.org/keywords/distributed-algorithm","display_name":"Distributed algorithm","score":0.6803765296936035},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.6740952730178833},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.6067972183227539},{"id":"https://openalex.org/keywords/synchronization","display_name":"Synchronization (alternating current)","score":0.5566549301147461},{"id":"https://openalex.org/keywords/distributed-computing","display_name":"Distributed computing","score":0.46107152104377747},{"id":"https://openalex.org/keywords/sequence","display_name":"Sequence (biology)","score":0.4346829950809479},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.22671577334403992},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.21128377318382263}],"concepts":[{"id":"https://openalex.org/C151319957","wikidata":"https://www.wikidata.org/wiki/Q752739","display_name":"Asynchronous communication","level":2,"score":0.8756636381149292},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.816810667514801},{"id":"https://openalex.org/C130120984","wikidata":"https://www.wikidata.org/wiki/Q2835898","display_name":"Distributed algorithm","level":2,"score":0.6803765296936035},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.6740952730178833},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.6067972183227539},{"id":"https://openalex.org/C2778562939","wikidata":"https://www.wikidata.org/wiki/Q1298791","display_name":"Synchronization (alternating current)","level":3,"score":0.5566549301147461},{"id":"https://openalex.org/C120314980","wikidata":"https://www.wikidata.org/wiki/Q180634","display_name":"Distributed computing","level":1,"score":0.46107152104377747},{"id":"https://openalex.org/C2778112365","wikidata":"https://www.wikidata.org/wiki/Q3511065","display_name":"Sequence (biology)","level":2,"score":0.4346829950809479},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.22671577334403992},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.21128377318382263},{"id":"https://openalex.org/C54355233","wikidata":"https://www.wikidata.org/wiki/Q7162","display_name":"Genetics","level":1,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/twc.2022.3211967","is_oa":false,"landing_page_url":"https://doi.org/10.1109/twc.2022.3211967","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/G3990962312","display_name":null,"funder_award_id":"62231019","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G4291666805","display_name":null,"funder_award_id":"62101349","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G4323983085","display_name":null,"funder_award_id":"12022116","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G6967058303","display_name":null,"funder_award_id":"11688101","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G8002638976","display_name":null,"funder_award_id":"RCS2022K010","funder_id":"https://openalex.org/F4320323067","funder_display_name":"State Key Laboratory of Rail Traffic Control and Safety"}],"funders":[{"id":"https://openalex.org/F4320321001","display_name":"National Natural Science Foundation of China","ror":"https://ror.org/01h0zpd94"},{"id":"https://openalex.org/F4320323066","display_name":"Beijing Jiaotong University","ror":"https://ror.org/01yj56c84"},{"id":"https://openalex.org/F4320323067","display_name":"State Key Laboratory of Rail Traffic Control and Safety","ror":"https://ror.org/01yj56c84"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":51,"referenced_works":["https://openalex.org/W1916337001","https://openalex.org/W1974691449","https://openalex.org/W1981361008","https://openalex.org/W2003321974","https://openalex.org/W2012961725","https://openalex.org/W2164278908","https://openalex.org/W2167020016","https://openalex.org/W2203973972","https://openalex.org/W2422021507","https://openalex.org/W2643502490","https://openalex.org/W2706056020","https://openalex.org/W2784331297","https://openalex.org/W2791712414","https://openalex.org/W2794457407","https://openalex.org/W2811365745","https://openalex.org/W2883289908","https://openalex.org/W2890736047","https://openalex.org/W2920228847","https://openalex.org/W2952268029","https://openalex.org/W2961179947","https://openalex.org/W2963116117","https://openalex.org/W2963116507","https://openalex.org/W2963245348","https://openalex.org/W2974046131","https://openalex.org/W2980983508","https://openalex.org/W2981917204","https://openalex.org/W2985210419","https://openalex.org/W2998719573","https://openalex.org/W3001370401","https://openalex.org/W3008218996","https://openalex.org/W3010632924","https://openalex.org/W3042527581","https://openalex.org/W3081279169","https://openalex.org/W3089248281","https://openalex.org/W3091852078","https://openalex.org/W3100966058","https://openalex.org/W3109886790","https://openalex.org/W3133759829","https://openalex.org/W3135158731","https://openalex.org/W3147028311","https://openalex.org/W3160389596","https://openalex.org/W3161432870","https://openalex.org/W3188366979","https://openalex.org/W3196979233","https://openalex.org/W3197124993","https://openalex.org/W3206148293","https://openalex.org/W3206898142","https://openalex.org/W3206974489","https://openalex.org/W3212851577","https://openalex.org/W4244393449","https://openalex.org/W4295789396"],"related_works":["https://openalex.org/W2116677773","https://openalex.org/W2155261584","https://openalex.org/W2584231425","https://openalex.org/W2150611273","https://openalex.org/W4207086172","https://openalex.org/W2042919702","https://openalex.org/W2120877146","https://openalex.org/W2333224782","https://openalex.org/W2766289720","https://openalex.org/W4310174516"],"abstract_inverted_index":{"Device":[0],"activity":[1,101],"detection":[2,86,102,183],"in":[3,19,22,66,122],"the":[4,30,42,47,55,74,85,99,106,118,127,133,137,148,152,166,176,188,203],"emerging":[5],"cell-free":[6],"massive":[7],"multiple-input":[8],"multiple-output":[9],"(MIMO)":[10],"systems":[11],"has":[12],"been":[13],"recognized":[14],"as":[15,126],"a":[16,34,109,113,123,157,193],"crucial":[17],"task":[18],"machine-type":[20],"communications,":[21],"which":[23,77,104],"multiple":[24],"access":[25],"points":[26],"(APs)":[27],"jointly":[28],"identify":[29],"active":[31,60],"devices":[32,39,61],"from":[33],"large":[35],"number":[36,129,196],"of":[37,46,108,151,187,197],"potential":[38],"based":[40],"on":[41,54,202],"received":[43],"signals.":[44],"Most":[45],"existing":[48],"works":[49],"addressing":[50],"this":[51,90,92],"problem":[52],"rely":[53],"impractical":[56],"assumption":[57],"that":[58,116,132,165,186],"different":[59],"transmit":[62],"signals":[63],"synchronously.":[64],"However,":[65],"practice,":[67],"synchronization":[68],"cannot":[69],"be":[70,200],"guaranteed":[71],"due":[72],"to":[73,84,98,185,199],"low-cost":[75],"oscillators,":[76],"brings":[78],"additional":[79],"discontinuous":[80],"and":[81,112,169,175],"nonconvex":[82,120],"constraints":[83,121],"problem.":[87],"To":[88,146],"address":[89],"challenge,":[91],"paper":[93],"reveals":[94],"an":[95],"equivalent":[96],"reformulation":[97],"asynchronous":[100],"problem,":[103],"facilitates":[105],"development":[107],"centralized":[110,168,189],"algorithm":[111,115,180,190],"distributed":[114,160,170,179],"satisfy":[117],"highly":[119],"gentle":[124],"fashion":[125],"iteration":[128],"increases,":[130],"so":[131],"sequence":[134],"generated":[135],"by":[136],"proposed":[138,167,177],"algorithms":[139,171],"can":[140],"get":[141],"around":[142],"bad":[143],"stationary":[144],"points.":[145],"reduce":[147],"capacity":[149],"requirements":[150],"fronthauls,":[153],"we":[154],"further":[155],"design":[156],"communication-efficient":[158],"accelerated":[159,178],"algorithm.":[161],"Simulation":[162],"results":[163],"demonstrate":[164],"outperform":[172],"state-of-the-art":[173],"approaches,":[174],"achieves":[181],"close":[182],"performance":[184],"but":[191],"with":[192],"much":[194],"smaller":[195],"bits":[198],"transmitted":[201],"fronthaul":[204],"links.":[205]},"counts_by_year":[{"year":2026,"cited_by_count":4},{"year":2025,"cited_by_count":15},{"year":2024,"cited_by_count":22},{"year":2023,"cited_by_count":9},{"year":2022,"cited_by_count":1}],"updated_date":"2026-03-27T05:58:40.876381","created_date":"2025-10-10T00:00:00"}
