{"id":"https://openalex.org/W4200531198","doi":"https://doi.org/10.1109/wcsp52459.2021.9613341","title":"Two User Clustering Schemes for Cell-Free Massive MIMO-NOMA System","display_name":"Two User Clustering Schemes for Cell-Free Massive MIMO-NOMA System","publication_year":2021,"publication_date":"2021-10-20","ids":{"openalex":"https://openalex.org/W4200531198","doi":"https://doi.org/10.1109/wcsp52459.2021.9613341"},"language":"en","primary_location":{"id":"doi:10.1109/wcsp52459.2021.9613341","is_oa":false,"landing_page_url":"https://doi.org/10.1109/wcsp52459.2021.9613341","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/A5047196187","display_name":"Wei Zhao","orcid":"https://orcid.org/0000-0003-2407-7312"},"institutions":[{"id":"https://openalex.org/I41198531","display_name":"Nanjing University of Posts and Telecommunications","ror":"https://ror.org/043bpky34","country_code":"CN","type":"education","lineage":["https://openalex.org/I41198531"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Wei Zhao","raw_affiliation_strings":["College of Telecommunication and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing, China"],"affiliations":[{"raw_affiliation_string":"College of Telecommunication and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing, China","institution_ids":["https://openalex.org/I41198531"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100371001","display_name":"Hong Wang","orcid":"https://orcid.org/0000-0003-4260-3734"},"institutions":[{"id":"https://openalex.org/I41198531","display_name":"Nanjing University of Posts and Telecommunications","ror":"https://ror.org/043bpky34","country_code":"CN","type":"education","lineage":["https://openalex.org/I41198531"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Hong Wang","raw_affiliation_strings":["College of Telecommunication and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing, China"],"affiliations":[{"raw_affiliation_string":"College of Telecommunication and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing, China","institution_ids":["https://openalex.org/I41198531"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5054278847","display_name":"Rongfang Song","orcid":"https://orcid.org/0000-0002-8170-3618"},"institutions":[{"id":"https://openalex.org/I41198531","display_name":"Nanjing University of Posts and Telecommunications","ror":"https://ror.org/043bpky34","country_code":"CN","type":"education","lineage":["https://openalex.org/I41198531"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Rongfang Song","raw_affiliation_strings":["College of Telecommunication and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing, China"],"affiliations":[{"raw_affiliation_string":"College of Telecommunication and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing, China","institution_ids":["https://openalex.org/I41198531"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5047196187"],"corresponding_institution_ids":["https://openalex.org/I41198531"],"apc_list":null,"apc_paid":null,"fwci":1.731,"has_fulltext":false,"cited_by_count":5,"citation_normalized_percentile":{"value":0.83954816,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":91,"max":98},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"5"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11458","display_name":"Advanced Wireless Communication Technologies","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/T11458","display_name":"Advanced Wireless Communication Technologies","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/T10148","display_name":"Advanced MIMO Systems Optimization","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/T11392","display_name":"Energy Harvesting in Wireless Networks","score":0.9932000041007996,"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/mimo","display_name":"MIMO","score":0.7977583408355713},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7144376039505005},{"id":"https://openalex.org/keywords/noma","display_name":"Noma","score":0.7117068767547607},{"id":"https://openalex.org/keywords/cluster-analysis","display_name":"Cluster analysis","score":0.6943854689598083},{"id":"https://openalex.org/keywords/overhead","display_name":"Overhead (engineering)","score":0.6399109959602356},{"id":"https://openalex.org/keywords/user-equipment","display_name":"User equipment","score":0.5547406673431396},{"id":"https://openalex.org/keywords/interference","display_name":"Interference (communication)","score":0.506964921951294},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.48748278617858887},{"id":"https://openalex.org/keywords/single-antenna-interference-cancellation","display_name":"Single antenna interference cancellation","score":0.46627238392829895},{"id":"https://openalex.org/keywords/base-station","display_name":"Base station","score":0.2975582480430603},{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.2628815770149231},{"id":"https://openalex.org/keywords/decoding-methods","display_name":"Decoding methods","score":0.17503127455711365},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.16183790564537048},{"id":"https://openalex.org/keywords/beamforming","display_name":"Beamforming","score":0.10336896777153015}],"concepts":[{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.7977583408355713},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7144376039505005},{"id":"https://openalex.org/C2775918612","wikidata":"https://www.wikidata.org/wiki/Q994794","display_name":"Noma","level":3,"score":0.7117068767547607},{"id":"https://openalex.org/C73555534","wikidata":"https://www.wikidata.org/wiki/Q622825","display_name":"Cluster analysis","level":2,"score":0.6943854689598083},{"id":"https://openalex.org/C2779960059","wikidata":"https://www.wikidata.org/wiki/Q7113681","display_name":"Overhead (engineering)","level":2,"score":0.6399109959602356},{"id":"https://openalex.org/C2781327853","wikidata":"https://www.wikidata.org/wiki/Q3552547","display_name":"User equipment","level":3,"score":0.5547406673431396},{"id":"https://openalex.org/C32022120","wikidata":"https://www.wikidata.org/wiki/Q797225","display_name":"Interference (communication)","level":3,"score":0.506964921951294},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.48748278617858887},{"id":"https://openalex.org/C83204339","wikidata":"https://www.wikidata.org/wiki/Q7523915","display_name":"Single antenna interference cancellation","level":3,"score":0.46627238392829895},{"id":"https://openalex.org/C68649174","wikidata":"https://www.wikidata.org/wiki/Q1379116","display_name":"Base station","level":2,"score":0.2975582480430603},{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.2628815770149231},{"id":"https://openalex.org/C57273362","wikidata":"https://www.wikidata.org/wiki/Q576722","display_name":"Decoding methods","level":2,"score":0.17503127455711365},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.16183790564537048},{"id":"https://openalex.org/C54197355","wikidata":"https://www.wikidata.org/wiki/Q5782992","display_name":"Beamforming","level":2,"score":0.10336896777153015},{"id":"https://openalex.org/C119857082","wikidata":"https://www.wikidata.org/wiki/Q2539","display_name":"Machine learning","level":1,"score":0.0},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.0},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/wcsp52459.2021.9613341","is_oa":false,"landing_page_url":"https://doi.org/10.1109/wcsp52459.2021.9613341","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":[{"id":"https://openalex.org/G6503700858","display_name":null,"funder_award_id":"BK20181392","funder_id":"https://openalex.org/F4320322769","funder_display_name":"Natural Science Foundation of Jiangsu Province"},{"id":"https://openalex.org/G884242597","display_name":null,"funder_award_id":"62171235,62171237,61801246","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/F4320322769","display_name":"Natural Science Foundation of Jiangsu Province","ror":"https://ror.org/01h0zpd94"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":10,"referenced_works":["https://openalex.org/W2286275639","https://openalex.org/W2522847968","https://openalex.org/W2807553547","https://openalex.org/W2839005931","https://openalex.org/W2896566269","https://openalex.org/W3000346173","https://openalex.org/W3009656397","https://openalex.org/W3038829241","https://openalex.org/W3101450547","https://openalex.org/W3215888462"],"related_works":["https://openalex.org/W2962936331","https://openalex.org/W3039370918","https://openalex.org/W2756429284","https://openalex.org/W2980162015","https://openalex.org/W2621874875","https://openalex.org/W2769732439","https://openalex.org/W4361208685","https://openalex.org/W4297882612","https://openalex.org/W4235843916","https://openalex.org/W3214327504"],"abstract_inverted_index":{"User":[0],"clustering":[1],"(UC)":[2],"has":[3],"a":[4,67],"significant":[5],"impact":[6,117],"on":[7],"the":[8,35,39,46,54,63,78,81,104,111,116,154,159],"sum":[9],"spectrum":[10],"efficiency":[11],"(SSE)":[12],"and":[13,95,114,126,150],"user":[14],"equipment":[15],"(UE)":[16],"fairness":[17,152],"in":[18,103,158],"cell-free":[19,135],"massive":[20,136],"multiple-input":[21],"multiple-output":[22],"non-orthogonal":[23],"multiple":[24],"access":[25,112],"(MIMO-NOMA)":[26],"systems.":[27],"The":[28],"exhaustive":[29],"search":[30],"UC":[31,65,73,145,156],"algorithm":[32,94],"can":[33],"achieve":[34],"maximum":[36],"SSE":[37,132,149],"of":[38,48,56,69,80,83,106,118,134],"system,":[40],"but":[41],"it":[42],"will":[43],"greatly":[44],"increase":[45],"overload":[47],"central":[49],"processing":[50],"unit,":[51],"notably":[52],"for":[53],"systems":[55],"medium-to-large":[57],"size.":[58],"In":[59,101],"order":[60],"to":[61],"approximate":[62],"optimal":[64],"without":[66],"lot":[68],"computational":[70],"overhead,":[71],"two":[72],"algorithms":[74,146,157],"are":[75,88],"proposed":[76,144],"from":[77],"perspective":[79],"similarity":[82],"large-scale":[84],"fading":[85],"coefficients,":[86],"which":[87],"named":[89],"as":[90],"UE":[91,151],"Similarity":[92],"Combination":[93],"Mean":[96],"Shift":[97],"Clustering":[98],"algorithm,":[99],"respectively.":[100],"addition,":[102],"case":[105],"leveraging":[107],"full-pilot":[108],"zero-forcing":[109],"at":[110],"point":[113],"considering":[115],"imperfect":[119],"successive":[120],"interference":[121],"cancellation,":[122],"intra-cluster":[123],"pilot":[124],"contamination":[125],"inter-cluster":[127],"interference,":[128],"we":[129],"derive":[130],"closed-form":[131],"expression":[133],"MIMO-NOMA":[137],"system.":[138],"Our":[139],"results":[140],"confirm":[141],"that":[142],"our":[143],"have":[147],"better":[148],"than":[153],"existing":[155],"literature.":[160]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2024,"cited_by_count":4}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}