{"id":"https://openalex.org/W3191539991","doi":"https://doi.org/10.1109/twc.2021.3100573","title":"Joint Power and User Grouping Optimization in Cell-Free Massive MIMO Systems","display_name":"Joint Power and User Grouping Optimization in Cell-Free Massive MIMO Systems","publication_year":2021,"publication_date":"2021-08-04","ids":{"openalex":"https://openalex.org/W3191539991","doi":"https://doi.org/10.1109/twc.2021.3100573","mag":"3191539991"},"language":"en","primary_location":{"id":"doi:10.1109/twc.2021.3100573","is_oa":false,"landing_page_url":"https://doi.org/10.1109/twc.2021.3100573","pdf_url":null,"source":{"id":"https://openalex.org/S63459445","display_name":"IEEE Transactions on Wireless Communications","issn_l":"1536-1276","issn":["1536-1276","1558-2248"],"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 Wireless Communications","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/A5003613250","display_name":"Fengqian Guo","orcid":"https://orcid.org/0000-0002-7614-5631"},"institutions":[{"id":"https://openalex.org/I126520041","display_name":"University of Science and Technology of China","ror":"https://ror.org/04c4dkn09","country_code":"CN","type":"education","lineage":["https://openalex.org/I126520041","https://openalex.org/I19820366"]}],"countries":["CN"],"is_corresponding":true,"raw_author_name":"Fengqian Guo","raw_affiliation_strings":["CAS Key Laboratory of Wireless-Optical Communications, University of Science and Technology of China, Hefei, China"],"affiliations":[{"raw_affiliation_string":"CAS Key Laboratory of Wireless-Optical Communications, University of Science and Technology of China, Hefei, China","institution_ids":["https://openalex.org/I126520041"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5056273339","display_name":"Hancheng Lu","orcid":"https://orcid.org/0000-0001-8302-4996"},"institutions":[{"id":"https://openalex.org/I126520041","display_name":"University of Science and Technology of China","ror":"https://ror.org/04c4dkn09","country_code":"CN","type":"education","lineage":["https://openalex.org/I126520041","https://openalex.org/I19820366"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Hancheng Lu","raw_affiliation_strings":["CAS Key Laboratory of Wireless-Optical Communications, University of Science and Technology of China, Hefei, China"],"affiliations":[{"raw_affiliation_string":"CAS Key Laboratory of Wireless-Optical Communications, University of Science and Technology of China, Hefei, China","institution_ids":["https://openalex.org/I126520041"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5062370091","display_name":"Zhuojia Gu","orcid":"https://orcid.org/0000-0002-6754-4462"},"institutions":[{"id":"https://openalex.org/I126520041","display_name":"University of Science and Technology of China","ror":"https://ror.org/04c4dkn09","country_code":"CN","type":"education","lineage":["https://openalex.org/I126520041","https://openalex.org/I19820366"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Zhuojia Gu","raw_affiliation_strings":["CAS Key Laboratory of Wireless-Optical Communications, University of Science and Technology of China, Hefei, China"],"affiliations":[{"raw_affiliation_string":"CAS Key Laboratory of Wireless-Optical Communications, University of Science and Technology of China, Hefei, China","institution_ids":["https://openalex.org/I126520041"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5003613250"],"corresponding_institution_ids":["https://openalex.org/I126520041"],"apc_list":null,"apc_paid":null,"fwci":2.9079,"has_fulltext":false,"cited_by_count":34,"citation_normalized_percentile":{"value":0.91421118,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":95,"max":99},"biblio":{"volume":"21","issue":"2","first_page":"991","last_page":"1006"},"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/T12791","display_name":"Full-Duplex Wireless Communications","score":0.9998999834060669,"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":0.9997000098228455,"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":0.7831281423568726},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.7136114835739136},{"id":"https://openalex.org/keywords/decoding-methods","display_name":"Decoding methods","score":0.7000956535339355},{"id":"https://openalex.org/keywords/quality-of-service","display_name":"Quality of service","score":0.6305458545684814},{"id":"https://openalex.org/keywords/transmitter-power-output","display_name":"Transmitter power output","score":0.573708713054657},{"id":"https://openalex.org/keywords/power-control","display_name":"Power control","score":0.49858784675598145},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.47581154108047485},{"id":"https://openalex.org/keywords/computational-complexity-theory","display_name":"Computational complexity theory","score":0.4721163511276245},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.4613751173019409},{"id":"https://openalex.org/keywords/optimization-problem","display_name":"Optimization problem","score":0.4152667820453644},{"id":"https://openalex.org/keywords/power","display_name":"Power (physics)","score":0.4102003574371338},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.34421953558921814},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.28576791286468506},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.27275243401527405},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.15837624669075012},{"id":"https://openalex.org/keywords/transmitter","display_name":"Transmitter","score":0.14522573351860046}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7831281423568726},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.7136114835739136},{"id":"https://openalex.org/C57273362","wikidata":"https://www.wikidata.org/wiki/Q576722","display_name":"Decoding methods","level":2,"score":0.7000956535339355},{"id":"https://openalex.org/C5119721","wikidata":"https://www.wikidata.org/wiki/Q220501","display_name":"Quality of service","level":2,"score":0.6305458545684814},{"id":"https://openalex.org/C65422117","wikidata":"https://www.wikidata.org/wiki/Q358527","display_name":"Transmitter power output","level":4,"score":0.573708713054657},{"id":"https://openalex.org/C56685638","wikidata":"https://www.wikidata.org/wiki/Q2300474","display_name":"Power control","level":3,"score":0.49858784675598145},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.47581154108047485},{"id":"https://openalex.org/C179799912","wikidata":"https://www.wikidata.org/wiki/Q205084","display_name":"Computational complexity theory","level":2,"score":0.4721163511276245},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.4613751173019409},{"id":"https://openalex.org/C137836250","wikidata":"https://www.wikidata.org/wiki/Q984063","display_name":"Optimization problem","level":2,"score":0.4152667820453644},{"id":"https://openalex.org/C163258240","wikidata":"https://www.wikidata.org/wiki/Q25342","display_name":"Power (physics)","level":2,"score":0.4102003574371338},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.34421953558921814},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.28576791286468506},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.27275243401527405},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.15837624669075012},{"id":"https://openalex.org/C47798520","wikidata":"https://www.wikidata.org/wiki/Q190157","display_name":"Transmitter","level":3,"score":0.14522573351860046},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/twc.2021.3100573","is_oa":false,"landing_page_url":"https://doi.org/10.1109/twc.2021.3100573","pdf_url":null,"source":{"id":"https://openalex.org/S63459445","display_name":"IEEE Transactions on Wireless Communications","issn_l":"1536-1276","issn":["1536-1276","1558-2248"],"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 Wireless Communications","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G4220777412","display_name":null,"funder_award_id":"61631017","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G4239754536","display_name":null,"funder_award_id":"61771445","funder_id":"https://openalex.org/F4320321001","funder_display_name":"National Natural Science Foundation of China"},{"id":"https://openalex.org/G7079021369","display_name":null,"funder_award_id":"91538203","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"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":42,"referenced_works":["https://openalex.org/W1540562499","https://openalex.org/W2023535408","https://openalex.org/W2061962896","https://openalex.org/W2101876299","https://openalex.org/W2147056723","https://openalex.org/W2286275639","https://openalex.org/W2289191545","https://openalex.org/W2502734103","https://openalex.org/W2536952334","https://openalex.org/W2558631043","https://openalex.org/W2568685990","https://openalex.org/W2593893328","https://openalex.org/W2597206177","https://openalex.org/W2610350904","https://openalex.org/W2739171486","https://openalex.org/W2739866486","https://openalex.org/W2790360669","https://openalex.org/W2793094603","https://openalex.org/W2794129933","https://openalex.org/W2802123921","https://openalex.org/W2807212950","https://openalex.org/W2807553547","https://openalex.org/W2808276562","https://openalex.org/W2894085760","https://openalex.org/W2901631215","https://openalex.org/W2907461669","https://openalex.org/W2922989912","https://openalex.org/W2943093986","https://openalex.org/W2962123958","https://openalex.org/W2963491643","https://openalex.org/W2963651047","https://openalex.org/W2963728200","https://openalex.org/W2964181991","https://openalex.org/W2966510405","https://openalex.org/W2969445624","https://openalex.org/W3003247710","https://openalex.org/W3004382263","https://openalex.org/W3010366679","https://openalex.org/W3100217887","https://openalex.org/W3174152832","https://openalex.org/W4250589301","https://openalex.org/W4252084011"],"related_works":["https://openalex.org/W2124240980","https://openalex.org/W2134520490","https://openalex.org/W2519403816","https://openalex.org/W2138759004","https://openalex.org/W2292005531","https://openalex.org/W2003870685","https://openalex.org/W2606858825","https://openalex.org/W2533637577","https://openalex.org/W4232438839","https://openalex.org/W938762042"],"abstract_inverted_index":{"To":[0],"relieve":[1],"the":[2,44,68,81,85,98,112,123,133,147,153,162,167,178,189],"stress":[3],"on":[4,30,39,80],"channel":[5,156],"estimation":[6,157],"and":[7,43,88,115,158,183],"decoding":[8],"complexity":[9,154],"in":[10,22,138],"cell-free":[11,139],"massive":[12],"multiple-input":[13],"multiple-output":[14],"(MIMO)":[15],"systems,":[16],"user":[17,77,89,131,164,180],"grouping":[18,90,165,181],"problem":[19,91,114,117],"is":[20,62,109],"investigated":[21],"this":[23],"paper,":[24],"where":[25,111],"access":[26],"points":[27],"(APs)":[28],"based":[29,107],"time-division":[31],"duplex":[32],"(TDD)":[33],"are":[34,56,118],"considered":[35],"to":[36,121],"serve":[37],"users":[38,136],"different":[40],"time":[41],"resources":[42],"same":[45],"frequency":[46],"resource.":[47],"In":[48],"addition,":[49],"when":[50],"quality":[51],"of":[52,135,149,155],"service":[53],"(QoS)":[54],"requirements":[55,75],"considered,":[57],"widely-used":[58],"max-min":[59],"power":[60,70,87,168,192],"control":[61],"no":[63],"longer":[64],"applicable.":[65],"We":[66],"derive":[67],"minimum":[69],"constraints":[71],"under":[72,92],"diverse":[73],"QoS":[74,93],"considering":[76],"grouping.":[78,194],"Based":[79],"analysis,":[82],"we":[83],"formulate":[84],"joint":[86],"constraints,":[94],"aiming":[95],"at":[96],"minimizing":[97],"total":[99,190],"transmit":[100,191],"power.":[101],"A":[102],"generalized":[103],"benders":[104],"decomposition":[105],"(GBD)":[106],"algorithm":[108],"proposed,":[110],"primal":[113],"master":[116],"solved":[119],"iteratively":[120],"approach":[122],"optimal":[124],"solution.":[125],"Simulation":[126],"results":[127],"demonstrate":[128],"that":[129],"by":[130,173,184],"grouping,":[132],"number":[134,148],"served":[137],"MIMO":[140],"systems":[141],"can":[142,170],"be":[143,171],"as":[144,146],"much":[145],"APs":[150],"without":[151,193],"increasing":[152],"decoding.":[159],"Furthermore,":[160],"with":[161,177,188],"proposed":[163],"strategy,":[166,182],"consumption":[169],"reduced":[172],"2\u20133":[174],"dB":[175,186],"compared":[176,187],"reference":[179],"7":[185]},"counts_by_year":[{"year":2025,"cited_by_count":5},{"year":2024,"cited_by_count":11},{"year":2023,"cited_by_count":8},{"year":2022,"cited_by_count":7},{"year":2021,"cited_by_count":3}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}
