{"id":"https://openalex.org/W3209504005","doi":"https://doi.org/10.1109/pimrc50174.2021.9569676","title":"Irregular Superimposed Multi-pilot for Grant-free Massive MIMO","display_name":"Irregular Superimposed Multi-pilot for Grant-free Massive MIMO","publication_year":2021,"publication_date":"2021-09-13","ids":{"openalex":"https://openalex.org/W3209504005","doi":"https://doi.org/10.1109/pimrc50174.2021.9569676","mag":"3209504005"},"language":"en","primary_location":{"id":"doi:10.1109/pimrc50174.2021.9569676","is_oa":false,"landing_page_url":"https://doi.org/10.1109/pimrc50174.2021.9569676","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2021 IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)","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/A5035242502","display_name":"Yihua Ma","orcid":"https://orcid.org/0000-0002-2504-5753"},"institutions":[{"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":true,"raw_author_name":"Yihua Ma","raw_affiliation_strings":["ZTE Corporation, Shenzhen,China State Key Laboratory of Mobile Network and Mobile Multimedia Technology,Shenzhen,China"],"affiliations":[{"raw_affiliation_string":"ZTE Corporation, Shenzhen,China State Key Laboratory of Mobile Network and Mobile Multimedia Technology,Shenzhen,China","institution_ids":["https://openalex.org/I4210098582","https://openalex.org/I4391767749"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100547395","display_name":"Zhifeng Yuan","orcid":null},"institutions":[{"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"]},{"id":"https://openalex.org/I4210098582","display_name":"ZTE (China)","ror":"https://ror.org/00rjhhq63","country_code":"CN","type":"company","lineage":["https://openalex.org/I4210098582"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zhifeng Yuan","raw_affiliation_strings":["ZTE Corporation, Shenzhen,China State Key Laboratory of Mobile Network and Mobile Multimedia Technology,Shenzhen,China"],"affiliations":[{"raw_affiliation_string":"ZTE Corporation, Shenzhen,China State Key Laboratory of Mobile Network and Mobile Multimedia Technology,Shenzhen,China","institution_ids":["https://openalex.org/I4210098582","https://openalex.org/I4391767749"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100367603","display_name":"Weimin Li","orcid":"https://orcid.org/0000-0001-8134-2157"},"institutions":[{"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"]},{"id":"https://openalex.org/I4210098582","display_name":"ZTE (China)","ror":"https://ror.org/00rjhhq63","country_code":"CN","type":"company","lineage":["https://openalex.org/I4210098582"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Weimin Li","raw_affiliation_strings":["ZTE Corporation, Shenzhen,China State Key Laboratory of Mobile Network and Mobile Multimedia Technology,Shenzhen,China"],"affiliations":[{"raw_affiliation_string":"ZTE Corporation, Shenzhen,China State Key Laboratory of Mobile Network and Mobile Multimedia Technology,Shenzhen,China","institution_ids":["https://openalex.org/I4210098582","https://openalex.org/I4391767749"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5100363791","display_name":"Zhigang Li","orcid":"https://orcid.org/0000-0001-7164-1049"},"institutions":[{"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":"Zhigang Li","raw_affiliation_strings":["ZTE Corporation, Shenzhen,China State Key Laboratory of Mobile Network and Mobile Multimedia Technology,Shenzhen,China"],"affiliations":[{"raw_affiliation_string":"ZTE Corporation, Shenzhen,China State Key Laboratory of Mobile Network and Mobile Multimedia Technology,Shenzhen,China","institution_ids":["https://openalex.org/I4210098582","https://openalex.org/I4391767749"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5035242502"],"corresponding_institution_ids":["https://openalex.org/I4210098582","https://openalex.org/I4391767749"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.1235391,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"703","last_page":"707"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10148","display_name":"Advanced MIMO Systems Optimization","score":1.0,"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":1.0,"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/T10936","display_name":"Millimeter-Wave Propagation and Modeling","score":0.9994999766349792,"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":0.9991999864578247,"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":0.7387189865112305},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.7255793213844299},{"id":"https://openalex.org/keywords/monte-carlo-method","display_name":"Monte Carlo method","score":0.592538595199585},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.5745267271995544},{"id":"https://openalex.org/keywords/differential","display_name":"Differential (mechanical device)","score":0.44588059186935425},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.3948725461959839},{"id":"https://openalex.org/keywords/simulation","display_name":"Simulation","score":0.3629385530948639},{"id":"https://openalex.org/keywords/computer-engineering","display_name":"Computer engineering","score":0.36119091510772705},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.19163477420806885},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.14518305659294128},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.13511160016059875},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.07443100214004517}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7387189865112305},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.7255793213844299},{"id":"https://openalex.org/C19499675","wikidata":"https://www.wikidata.org/wiki/Q232207","display_name":"Monte Carlo method","level":2,"score":0.592538595199585},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.5745267271995544},{"id":"https://openalex.org/C93226319","wikidata":"https://www.wikidata.org/wiki/Q193137","display_name":"Differential (mechanical device)","level":2,"score":0.44588059186935425},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.3948725461959839},{"id":"https://openalex.org/C44154836","wikidata":"https://www.wikidata.org/wiki/Q45045","display_name":"Simulation","level":1,"score":0.3629385530948639},{"id":"https://openalex.org/C113775141","wikidata":"https://www.wikidata.org/wiki/Q428691","display_name":"Computer engineering","level":1,"score":0.36119091510772705},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.19163477420806885},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.14518305659294128},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.13511160016059875},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.07443100214004517},{"id":"https://openalex.org/C146978453","wikidata":"https://www.wikidata.org/wiki/Q3798668","display_name":"Aerospace engineering","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/pimrc50174.2021.9569676","is_oa":false,"landing_page_url":"https://doi.org/10.1109/pimrc50174.2021.9569676","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2021 IEEE 32nd Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/16","score":0.8299999833106995,"display_name":"Peace, Justice and strong institutions"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":12,"referenced_works":["https://openalex.org/W1595159159","https://openalex.org/W2921703634","https://openalex.org/W2963265286","https://openalex.org/W2963797719","https://openalex.org/W2991631277","https://openalex.org/W3001370401","https://openalex.org/W3021735486","https://openalex.org/W3130059672","https://openalex.org/W4288550678","https://openalex.org/W6760497636","https://openalex.org/W6776049779","https://openalex.org/W6777239175"],"related_works":["https://openalex.org/W2545343974","https://openalex.org/W2393870460","https://openalex.org/W2254578859","https://openalex.org/W4284894156","https://openalex.org/W2161803855","https://openalex.org/W4291895924","https://openalex.org/W1783583321","https://openalex.org/W4224872188","https://openalex.org/W4285223123","https://openalex.org/W4386970495"],"abstract_inverted_index":{"Massive":[0],"MIMO":[1],"provides":[2,63],"a":[3,64,93],"high":[4],"spatial":[5,17],"degree":[6],"of":[7,78],"freedom":[8],"(DoF)":[9],"to":[10,29,45],"support":[11],"multiple":[12],"users.":[13],"To":[14,48],"gain":[15],"the":[16,25,40,69,76,86,102,107],"DoF,":[18],"accurate":[19],"channel":[20],"information":[21],"is":[22,27,90],"crucial,":[23],"and":[24,85,104],"pilot":[26,46,87],"important":[28],"obtain":[30],"it.":[31],"However,":[32],"in":[33,80],"grant-free":[34],"transmissions,":[35],"different":[36],"users":[37],"may":[38],"select":[39],"same":[41],"pilot,":[42],"which":[43],"leads":[44],"collisions.":[47],"solve":[49],"this":[50,52,74],"problem,":[51],"paper":[53],"proposes":[54],"an":[55],"irregular":[56],"superimposed":[57,61],"multi-pilot.":[58],"The":[59,98],"proposed":[60,108],"structure":[62],"large":[65],"multi-pilot":[66,81],"pool":[67],"than":[68],"conventional":[70],"cascaded":[71],"one.":[72],"Using":[73],"structure,":[75],"number":[77,88],"single-pilots":[79],"can":[82],"be":[83],"different,":[84],"distribution":[89],"optimized":[91],"via":[92],"novel":[94],"Monte-Carlo-based":[95],"differential":[96],"evolution.":[97],"simulation":[99],"results":[100],"verify":[101],"analysis":[103],"show":[105],"that":[106],"method":[109],"outperforms":[110],"existing":[111],"works.":[112]},"counts_by_year":[],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}