{"id":"https://openalex.org/W7127677231","doi":"https://doi.org/10.1109/ccnc65079.2026.11366314","title":"Predictive Calibration of Phase Impairments across Access Points for Coherent Joint Transmission in Cell-Free Massive MIMO","display_name":"Predictive Calibration of Phase Impairments across Access Points for Coherent Joint Transmission in Cell-Free Massive MIMO","publication_year":2026,"publication_date":"2026-01-09","ids":{"openalex":"https://openalex.org/W7127677231","doi":"https://doi.org/10.1109/ccnc65079.2026.11366314"},"language":null,"primary_location":{"id":"doi:10.1109/ccnc65079.2026.11366314","is_oa":false,"landing_page_url":"https://doi.org/10.1109/ccnc65079.2026.11366314","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2026 IEEE 23rd Consumer Communications &amp;amp; Networking Conference (CCNC)","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/A5124979917","display_name":"Takahide Murakami","orcid":null},"institutions":[{"id":"https://openalex.org/I4210164495","display_name":"KDDI Research (Japan)","ror":"https://ror.org/05qsqt662","country_code":"JP","type":"company","lineage":["https://openalex.org/I4210164495"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Takahide Murakami","raw_affiliation_strings":["KDDI Research, Inc.,Wireless Technology Division,Saitama,Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"KDDI Research, Inc.,Wireless Technology Division,Saitama,Japan","institution_ids":["https://openalex.org/I4210164495"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5046352527","display_name":"Amr Amrallah","orcid":"https://orcid.org/0000-0003-1606-567X"},"institutions":[{"id":"https://openalex.org/I4210164495","display_name":"KDDI Research (Japan)","ror":"https://ror.org/05qsqt662","country_code":"JP","type":"company","lineage":["https://openalex.org/I4210164495"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Amr Amrallah","raw_affiliation_strings":["KDDI Research, Inc.,Wireless Technology Division,Saitama,Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"KDDI Research, Inc.,Wireless Technology Division,Saitama,Japan","institution_ids":["https://openalex.org/I4210164495"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5041281576","display_name":"Yu Tsukamoto","orcid":"https://orcid.org/0000-0002-7028-5545"},"institutions":[{"id":"https://openalex.org/I4210164495","display_name":"KDDI Research (Japan)","ror":"https://ror.org/05qsqt662","country_code":"JP","type":"company","lineage":["https://openalex.org/I4210164495"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Yu Tsukamoto","raw_affiliation_strings":["KDDI Research, Inc.,Wireless Technology Division,Saitama,Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"KDDI Research, Inc.,Wireless Technology Division,Saitama,Japan","institution_ids":["https://openalex.org/I4210164495"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5003324571","display_name":"Akio Ikami","orcid":"https://orcid.org/0000-0002-2560-085X"},"institutions":[{"id":"https://openalex.org/I4210164495","display_name":"KDDI Research (Japan)","ror":"https://ror.org/05qsqt662","country_code":"JP","type":"company","lineage":["https://openalex.org/I4210164495"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Akio Ikami","raw_affiliation_strings":["KDDI Research, Inc.,Wireless Technology Division,Saitama,Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"KDDI Research, Inc.,Wireless Technology Division,Saitama,Japan","institution_ids":["https://openalex.org/I4210164495"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I4210164495"],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"2"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10148","display_name":"Advanced MIMO Systems Optimization","score":0.23430000245571136,"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":0.23430000245571136,"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/T11248","display_name":"Advanced Power Amplifier Design","score":0.1898999959230423,"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/T12791","display_name":"Full-Duplex Wireless Communications","score":0.18639999628067017,"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/transmission","display_name":"Transmission (telecommunications)","score":0.5680999755859375},{"id":"https://openalex.org/keywords/phase","display_name":"Phase (matter)","score":0.5651999711990356},{"id":"https://openalex.org/keywords/joint","display_name":"Joint (building)","score":0.5400999784469604},{"id":"https://openalex.org/keywords/calibration","display_name":"Calibration","score":0.5202999711036682},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.44859999418258667},{"id":"https://openalex.org/keywords/degradation","display_name":"Degradation (telecommunications)","score":0.4178999960422516},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.3846000134944916},{"id":"https://openalex.org/keywords/spectral-efficiency","display_name":"Spectral efficiency","score":0.3659000098705292}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6538000106811523},{"id":"https://openalex.org/C761482","wikidata":"https://www.wikidata.org/wiki/Q118093","display_name":"Transmission (telecommunications)","level":2,"score":0.5680999755859375},{"id":"https://openalex.org/C44280652","wikidata":"https://www.wikidata.org/wiki/Q104837","display_name":"Phase (matter)","level":2,"score":0.5651999711990356},{"id":"https://openalex.org/C18555067","wikidata":"https://www.wikidata.org/wiki/Q8375051","display_name":"Joint (building)","level":2,"score":0.5400999784469604},{"id":"https://openalex.org/C165838908","wikidata":"https://www.wikidata.org/wiki/Q736777","display_name":"Calibration","level":2,"score":0.5202999711036682},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.48730000853538513},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.4546000063419342},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.44859999418258667},{"id":"https://openalex.org/C2779679103","wikidata":"https://www.wikidata.org/wiki/Q5251805","display_name":"Degradation (telecommunications)","level":2,"score":0.4178999960422516},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.4156000018119812},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.3846000134944916},{"id":"https://openalex.org/C137246740","wikidata":"https://www.wikidata.org/wiki/Q583970","display_name":"Spectral efficiency","level":3,"score":0.3659000098705292},{"id":"https://openalex.org/C60327585","wikidata":"https://www.wikidata.org/wiki/Q723733","display_name":"Millisecond","level":2,"score":0.36250001192092896},{"id":"https://openalex.org/C2778562939","wikidata":"https://www.wikidata.org/wiki/Q1298791","display_name":"Synchronization (alternating current)","level":3,"score":0.3594000041484833},{"id":"https://openalex.org/C47446073","wikidata":"https://www.wikidata.org/wiki/Q5165890","display_name":"Control theory (sociology)","level":3,"score":0.3450999855995178},{"id":"https://openalex.org/C2779530757","wikidata":"https://www.wikidata.org/wiki/Q1207505","display_name":"Quality (philosophy)","level":2,"score":0.3407000005245209},{"id":"https://openalex.org/C557945733","wikidata":"https://www.wikidata.org/wiki/Q389772","display_name":"Data transmission","level":2,"score":0.31290000677108765},{"id":"https://openalex.org/C28719098","wikidata":"https://www.wikidata.org/wiki/Q44946","display_name":"Point (geometry)","level":2,"score":0.30489999055862427},{"id":"https://openalex.org/C61797465","wikidata":"https://www.wikidata.org/wiki/Q1188986","display_name":"Term (time)","level":2,"score":0.28209999203681946},{"id":"https://openalex.org/C83546350","wikidata":"https://www.wikidata.org/wiki/Q1139051","display_name":"Regression","level":2,"score":0.2799000144004822},{"id":"https://openalex.org/C60798267","wikidata":"https://www.wikidata.org/wiki/Q1226939","display_name":"Division (mathematics)","level":2,"score":0.2741999924182892},{"id":"https://openalex.org/C89631360","wikidata":"https://www.wikidata.org/wiki/Q1428766","display_name":"Phase noise","level":2,"score":0.26649999618530273},{"id":"https://openalex.org/C3017413879","wikidata":"https://www.wikidata.org/wiki/Q185553","display_name":"Phase difference","level":3,"score":0.2637999951839447},{"id":"https://openalex.org/C104267543","wikidata":"https://www.wikidata.org/wiki/Q208163","display_name":"Signal processing","level":3,"score":0.25290000438690186}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/ccnc65079.2026.11366314","is_oa":false,"landing_page_url":"https://doi.org/10.1109/ccnc65079.2026.11366314","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2026 IEEE 23rd Consumer Communications &amp;amp; Networking Conference (CCNC)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.4637109041213989,"id":"https://metadata.un.org/sdg/7","display_name":"Affordable and clean energy"}],"awards":[],"funders":[{"id":"https://openalex.org/F4320335839","display_name":"National Institute of Information and Communications Technology","ror":"https://ror.org/016bgq349"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":5,"referenced_works":["https://openalex.org/W1540562499","https://openalex.org/W2770606349","https://openalex.org/W2989983234","https://openalex.org/W4382888720","https://openalex.org/W4392910471"],"related_works":[],"abstract_inverted_index":{"We":[0],"address":[1],"the":[2,50,80,85],"degradation":[3],"of":[4],"wireless":[5],"quality":[6],"caused":[7],"by":[8,92],"phase":[9,45,72],"difference":[10],"variations":[11,73],"among":[12],"access":[13],"points":[14],"(APs)":[15],"in":[16],"cell-free":[17],"massive":[18],"multiple-input":[19],"multiple-output":[20],"(CFmMIMO)":[21],"systems":[22],"employing":[23],"coherent":[24],"joint":[25],"transmission":[26],"(CJT)":[27],"under":[28],"time":[29],"division":[30],"duplexing":[31],"(TDD).":[32],"Using":[33],"5G-compliant":[34],"equipment,":[35],"we":[36,57],"analyze":[37],"real":[38],"measurement":[39],"data":[40,82],"and":[41,69],"show":[42],"that":[43,63,84],"inter-AP":[44],"differences":[46],"can":[47],"fluctuate":[48],"on":[49,79],"millisecond":[51],"timescale.":[52],"To":[53],"mitigate":[54],"this":[55],"issue,":[56],"propose":[58],"a":[59],"predictive":[60],"calibration":[61],"method":[62,87],"employs":[64],"time-series":[65],"regression":[66],"to":[67,94],"estimate":[68],"compensate":[70],"short-term":[71],"during":[74],"precoding.":[75],"Simulation":[76],"results":[77],"based":[78],"measured":[81],"demonstrate":[83],"proposed":[86],"improves":[88],"spectral":[89],"efficiency":[90],"(SE)":[91],"up":[93],"0.63":[95],"bit/s/Hz.":[96]},"counts_by_year":[],"updated_date":"2026-07-14T23:27:15.235271","created_date":"2026-02-06T00:00:00"}
