{"id":"https://openalex.org/W4297911473","doi":"https://doi.org/10.1109/iccc55456.2022.9880647","title":"Pilot Contamination Precoding Method for Cell-Free Massive MIMO Systems","display_name":"Pilot Contamination Precoding Method for Cell-Free Massive MIMO Systems","publication_year":2022,"publication_date":"2022-08-11","ids":{"openalex":"https://openalex.org/W4297911473","doi":"https://doi.org/10.1109/iccc55456.2022.9880647"},"language":"en","primary_location":{"id":"doi:10.1109/iccc55456.2022.9880647","is_oa":false,"landing_page_url":"https://doi.org/10.1109/iccc55456.2022.9880647","pdf_url":null,"source":{"id":"https://openalex.org/S4363608039","display_name":"2022 IEEE/CIC International Conference on Communications in China (ICCC)","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":"2022 IEEE/CIC International Conference on Communications in China (ICCC)","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/A5031848335","display_name":"Xu Qiao","orcid":"https://orcid.org/0000-0002-5178-3899"},"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":"Xu Qiao","raw_affiliation_strings":["Wireless Communications Key laboratory of Jiangsu Province Nanjing University of Posts and Telecommunications,Nanjing,China,210003"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Wireless Communications Key laboratory of Jiangsu Province Nanjing University of Posts and Telecommunications,Nanjing,China,210003","institution_ids":["https://openalex.org/I41198531"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5075509135","display_name":"Yao Zhang","orcid":"https://orcid.org/0000-0003-4496-2650"},"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":"Yao Zhang","raw_affiliation_strings":["Wireless Communications Key laboratory of Jiangsu Province Nanjing University of Posts and Telecommunications,Nanjing,China,210003"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Wireless Communications Key laboratory of Jiangsu Province Nanjing University of Posts and Telecommunications,Nanjing,China,210003","institution_ids":["https://openalex.org/I41198531"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5059710405","display_name":"Longxiang Yang","orcid":"https://orcid.org/0000-0003-1927-0177"},"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":"Longxiang Yang","raw_affiliation_strings":["Wireless Communications Key laboratory of Jiangsu Province Nanjing University of Posts and Telecommunications,Nanjing,China,210003"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Wireless Communications Key laboratory of Jiangsu Province Nanjing University of Posts and Telecommunications,Nanjing,China,210003","institution_ids":["https://openalex.org/I41198531"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5100755735","display_name":"Hongbo Zhu","orcid":"https://orcid.org/0000-0002-1032-4434"},"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":"Hongbo Zhu","raw_affiliation_strings":["Wireless Communications Key laboratory of Jiangsu Province Nanjing University of Posts and Telecommunications,Nanjing,China,210003"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Wireless Communications Key laboratory of Jiangsu Province Nanjing University of Posts and Telecommunications,Nanjing,China,210003","institution_ids":["https://openalex.org/I41198531"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I41198531"],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":4,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"127","last_page":"132"},"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":0.9987000226974487,"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":0.9976999759674072,"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/precoding","display_name":"Precoding","score":0.8778849244117737},{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.7805140018463135},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6794701814651489},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.6742408871650696},{"id":"https://openalex.org/keywords/user-equipment","display_name":"User equipment","score":0.5533676147460938},{"id":"https://openalex.org/keywords/spectral-efficiency","display_name":"Spectral efficiency","score":0.4810538589954376},{"id":"https://openalex.org/keywords/beamforming","display_name":"Beamforming","score":0.4494820833206177},{"id":"https://openalex.org/keywords/key","display_name":"Key (lock)","score":0.44475436210632324},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.42108193039894104},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.18956515192985535},{"id":"https://openalex.org/keywords/base-station","display_name":"Base station","score":0.15747085213661194},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.14765691757202148}],"concepts":[{"id":"https://openalex.org/C160562895","wikidata":"https://www.wikidata.org/wiki/Q7239557","display_name":"Precoding","level":4,"score":0.8778849244117737},{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.7805140018463135},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6794701814651489},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.6742408871650696},{"id":"https://openalex.org/C2781327853","wikidata":"https://www.wikidata.org/wiki/Q3552547","display_name":"User equipment","level":3,"score":0.5533676147460938},{"id":"https://openalex.org/C137246740","wikidata":"https://www.wikidata.org/wiki/Q583970","display_name":"Spectral efficiency","level":3,"score":0.4810538589954376},{"id":"https://openalex.org/C54197355","wikidata":"https://www.wikidata.org/wiki/Q5782992","display_name":"Beamforming","level":2,"score":0.4494820833206177},{"id":"https://openalex.org/C26517878","wikidata":"https://www.wikidata.org/wiki/Q228039","display_name":"Key (lock)","level":2,"score":0.44475436210632324},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.42108193039894104},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.18956515192985535},{"id":"https://openalex.org/C68649174","wikidata":"https://www.wikidata.org/wiki/Q1379116","display_name":"Base station","level":2,"score":0.15747085213661194},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.14765691757202148},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/iccc55456.2022.9880647","is_oa":false,"landing_page_url":"https://doi.org/10.1109/iccc55456.2022.9880647","pdf_url":null,"source":{"id":"https://openalex.org/S4363608039","display_name":"2022 IEEE/CIC International Conference on Communications in China (ICCC)","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":"2022 IEEE/CIC International Conference on Communications in China (ICCC)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":16,"referenced_works":["https://openalex.org/W1518945650","https://openalex.org/W1965392255","https://openalex.org/W2013546591","https://openalex.org/W2147601077","https://openalex.org/W2286275639","https://openalex.org/W2592341259","https://openalex.org/W2742503793","https://openalex.org/W2770606349","https://openalex.org/W2839005931","https://openalex.org/W2964050245","https://openalex.org/W2965123227","https://openalex.org/W2971415724","https://openalex.org/W2974046131","https://openalex.org/W3035475152","https://openalex.org/W3082453238","https://openalex.org/W3104746390"],"related_works":["https://openalex.org/W4210847162","https://openalex.org/W2888906845","https://openalex.org/W2545392450","https://openalex.org/W2603427126","https://openalex.org/W2523249769","https://openalex.org/W2595519126","https://openalex.org/W4285190684","https://openalex.org/W3027510301","https://openalex.org/W1764924767","https://openalex.org/W2964229094"],"abstract_inverted_index":{"In":[0],"this":[1],"paper,":[2],"in":[3,11],"order":[4],"to":[5,120],"effectively":[6],"eliminate":[7],"the":[8,18,30,38,59,64,82,109,122,126],"pilot":[9,19,61],"contamination":[10,20],"cell-free":[12],"massive":[13],"multiple-input":[14],"multiple-output":[15],"(MIMO)":[16],"systems,":[17],"precoding":[21],"(PCP)":[22],"method":[23,40],"is":[24,41,93,101],"applied":[25],"by":[26],"means":[27],"of":[28,37,53,111,124],"introducing":[29],"power":[31,87],"scaling":[32,88],"factor.":[33],"The":[34,90],"key":[35,112],"idea":[36],"PCP":[39,72,100,127],"that":[42,57],"central":[43],"processing":[44],"unit":[45],"(CPU)":[46],"linearly":[47],"combine":[48],"symbols":[49],"for":[50,95],"a":[51],"fraction":[52],"user":[54],"equipments":[55],"(UEs)":[56],"reusing":[58],"same":[60],"sequence.":[62],"Specifically,":[63],"achievable":[65],"downlink":[66,96],"UE":[67,97],"spectral":[68],"efficiency":[69],"(SE)":[70],"with":[71],"and":[73,86],"conjugate":[74],"beamforming":[75],"(CB)":[76],"preprocessing":[77],"are":[78,118],"derived":[79,91],"based":[80],"on":[81],"defined":[83],"combination":[84],"factors":[85],"factors.":[89],"expression":[92],"versatile":[94],"SE":[98],"whether":[99],"used":[102],"or":[103],"not,":[104],"which":[105],"also":[106],"facilitates":[107],"analyzing":[108],"impacts":[110],"system":[113],"parameters.":[114],"Finally,":[115],"simulation":[116],"results":[117],"provided":[119],"demonstrate":[121],"superiority":[123],"adopting":[125],"method.":[128]},"counts_by_year":[{"year":2025,"cited_by_count":3},{"year":2023,"cited_by_count":1}],"updated_date":"2026-07-14T23:27:15.235271","created_date":"2025-10-10T00:00:00"}