{"id":"https://openalex.org/W4408048544","doi":"https://doi.org/10.1109/tvt.2025.3546021","title":"A Frequency-Domain Opportunistic Approach for Spectral-Efficient Cell-Free Massive MIMO","display_name":"A Frequency-Domain Opportunistic Approach for Spectral-Efficient Cell-Free Massive MIMO","publication_year":2025,"publication_date":"2025-02-28","ids":{"openalex":"https://openalex.org/W4408048544","doi":"https://doi.org/10.1109/tvt.2025.3546021"},"language":"en","primary_location":{"id":"doi:10.1109/tvt.2025.3546021","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tvt.2025.3546021","pdf_url":null,"source":{"id":"https://openalex.org/S10936095","display_name":"IEEE Transactions on Vehicular Technology","issn_l":"0018-9545","issn":["0018-9545","1939-9359"],"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 Vehicular Technology","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/A5059828821","display_name":"Wei Jiang","orcid":"https://orcid.org/0000-0002-3719-3710"},"institutions":[{"id":"https://openalex.org/I33256026","display_name":"German Research Centre for Artificial Intelligence","ror":"https://ror.org/01ayc5b57","country_code":"DE","type":"funder","lineage":["https://openalex.org/I33256026"]}],"countries":["DE"],"is_corresponding":true,"raw_author_name":"Wei Jiang","raw_affiliation_strings":["Intelligent Networking Research Group, German Research Centre for Artificial Intelligence (DFKI), Kaiserslautern, Germany"],"affiliations":[{"raw_affiliation_string":"Intelligent Networking Research Group, German Research Centre for Artificial Intelligence (DFKI), Kaiserslautern, Germany","institution_ids":["https://openalex.org/I33256026"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5008473850","display_name":"Hans D. Schotten","orcid":"https://orcid.org/0000-0001-5005-3635"},"institutions":[{"id":"https://openalex.org/I33256026","display_name":"German Research Centre for Artificial Intelligence","ror":"https://ror.org/01ayc5b57","country_code":"DE","type":"funder","lineage":["https://openalex.org/I33256026"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Hans D. Schotten","raw_affiliation_strings":["Intelligent Networking Research Group, German Research Centre for Artificial Intelligence (DFKI), Kaiserslautern, Germany"],"affiliations":[{"raw_affiliation_string":"Intelligent Networking Research Group, German Research Centre for Artificial Intelligence (DFKI), Kaiserslautern, Germany","institution_ids":["https://openalex.org/I33256026"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5059828821"],"corresponding_institution_ids":["https://openalex.org/I33256026"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.03444608,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"74","issue":"7","first_page":"10772","last_page":"10788"},"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/T10796","display_name":"Cooperative Communication and Network Coding","score":0.9998000264167786,"subfield":{"id":"https://openalex.org/subfields/1705","display_name":"Computer Networks and Communications"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11458","display_name":"Advanced Wireless Communication Technologies","score":0.9998000264167786,"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":0.6377198100090027},{"id":"https://openalex.org/keywords/frequency-domain","display_name":"Frequency domain","score":0.5657355189323425},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.5351969003677368},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.4802142083644867},{"id":"https://openalex.org/keywords/spectral-efficiency","display_name":"Spectral efficiency","score":0.42850708961486816},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.35784077644348145},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.3144848346710205},{"id":"https://openalex.org/keywords/beamforming","display_name":"Beamforming","score":0.11960390210151672}],"concepts":[{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.6377198100090027},{"id":"https://openalex.org/C19118579","wikidata":"https://www.wikidata.org/wiki/Q786423","display_name":"Frequency domain","level":2,"score":0.5657355189323425},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.5351969003677368},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.4802142083644867},{"id":"https://openalex.org/C137246740","wikidata":"https://www.wikidata.org/wiki/Q583970","display_name":"Spectral efficiency","level":3,"score":0.42850708961486816},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.35784077644348145},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.3144848346710205},{"id":"https://openalex.org/C54197355","wikidata":"https://www.wikidata.org/wiki/Q5782992","display_name":"Beamforming","level":2,"score":0.11960390210151672},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/tvt.2025.3546021","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tvt.2025.3546021","pdf_url":null,"source":{"id":"https://openalex.org/S10936095","display_name":"IEEE Transactions on Vehicular Technology","issn_l":"0018-9545","issn":["0018-9545","1939-9359"],"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 Vehicular Technology","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":44,"referenced_works":["https://openalex.org/W1675889409","https://openalex.org/W1733806262","https://openalex.org/W1976109068","https://openalex.org/W1997834106","https://openalex.org/W2009171710","https://openalex.org/W2106929598","https://openalex.org/W2114004090","https://openalex.org/W2147601077","https://openalex.org/W2158057034","https://openalex.org/W2171066806","https://openalex.org/W2286275639","https://openalex.org/W2514684141","https://openalex.org/W2593893328","https://openalex.org/W2610350904","https://openalex.org/W2742503793","https://openalex.org/W2797535556","https://openalex.org/W2928963866","https://openalex.org/W2963116507","https://openalex.org/W2963508491","https://openalex.org/W2965123227","https://openalex.org/W2968074955","https://openalex.org/W2974046131","https://openalex.org/W2984884920","https://openalex.org/W2985994751","https://openalex.org/W3094713224","https://openalex.org/W3099019646","https://openalex.org/W3126686235","https://openalex.org/W3157785677","https://openalex.org/W3158832185","https://openalex.org/W3171146543","https://openalex.org/W3174518893","https://openalex.org/W3182706449","https://openalex.org/W3197134600","https://openalex.org/W4221142974","https://openalex.org/W4293231719","https://openalex.org/W4309353558","https://openalex.org/W4376480543","https://openalex.org/W4382317677","https://openalex.org/W4382888720","https://openalex.org/W4385270080","https://openalex.org/W4388426785","https://openalex.org/W4399601919","https://openalex.org/W4400276497","https://openalex.org/W4401508692"],"related_works":["https://openalex.org/W3209566644","https://openalex.org/W2093292593","https://openalex.org/W2545343974","https://openalex.org/W4291895924","https://openalex.org/W2134916061","https://openalex.org/W2520729674","https://openalex.org/W4393237428","https://openalex.org/W2155567810","https://openalex.org/W3010469571","https://openalex.org/W2463053673"],"abstract_inverted_index":{"Constrained":[0],"by":[1,73,146,172],"weak":[2],"signal":[3],"strength":[4],"and":[5,78,133],"significant":[6],"inter-cell":[7],"interference,":[8],"users":[9,119],"located":[10],"at":[11,167],"the":[12,44,69,85,90,141,148,168,184],"cell":[13],"edge":[14],"in":[15,84,112],"a":[16,80,156],"cellular":[17],"network":[18],"suffer":[19],"from":[20],"inferior":[21],"service":[22],"quality.":[23],"Recently,":[24],"cell-free":[25,86],"massive":[26],"MIMO":[27],"(CFmMIMO)":[28],"has":[29],"gained":[30],"considerable":[31,179],"attention":[32],"due":[33],"to":[34,37,49,104,129,155,183],"its":[35],"capability":[36],"offer":[38],"uniform":[39],"quality":[40],"of":[41,143,150],"service,":[42],"alleviating":[43],"cell-edge":[45],"problem.":[46],"In":[47],"contrast":[48],"previous":[50],"studies":[51,59],"focused":[52],"on":[53],"narrow-band":[54],"CFmMIMO":[55,61],"systems,":[56],"this":[57,138],"paper":[58],"wideband":[60],"communications":[62],"against":[63],"channel":[64],"frequency":[65],"selectivity.":[66],"By":[67],"exploiting":[68],"frequency-domain":[70],"flexibility":[71],"offered":[72],"orthogonal":[74],"frequency-division":[75],"multiplexing":[76],"(OFDM),":[77],"leveraging":[79],"particular":[81],"spatial":[82],"characteristic":[83],"structure":[87],"\u2013":[88,98],"namely,":[89],"near-far":[91],"effect":[92],"among":[93],"distributed":[94],"access":[95],"points":[96],"(APs)":[97],"we":[99],"propose":[100],"an":[101],"opportunistic":[102],"approach":[103,139,177],"boost":[105],"spectral":[106],"efficiency.":[107],"The":[108],"core":[109],"concept":[110],"lies":[111],"opportunistically":[113],"activating":[114],"nearby":[115],"APs":[116,128,152],"for":[117],"certain":[118],"across":[120],"their":[121],"assigned":[122],"OFDM":[123],"subcarriers":[124],"while":[125],"deactivating":[126],"distant":[127],"prevent":[130],"power":[131],"wastage":[132],"lower":[134],"inter-user":[135],"interference.":[136],"Furthermore,":[137],"enables":[140],"use":[142],"downlink":[144,162],"pilots":[145],"reducing":[147],"number":[149],"active":[151],"per":[153],"subcarrier":[154],"small":[157],"subset,":[158],"thereby":[159],"substantially":[160],"improving":[161],"performance":[163,180],"through":[164],"coherent":[165],"detection":[166],"user":[169],"receiver.":[170],"Verified":[171],"numerical":[173],"results,":[174],"our":[175],"proposed":[176],"demonstrates":[178],"improvement":[181],"compared":[182],"two":[185],"benchmark":[186],"approaches.":[187]},"counts_by_year":[],"updated_date":"2025-12-28T23:10:05.387466","created_date":"2025-10-10T00:00:00"}
