{"id":"https://openalex.org/W4200056222","doi":"https://doi.org/10.1109/meditcom49071.2021.9647463","title":"Energy-Efficient Hybrid Precoding Schemes for RIS-Assisted Millimeter-wave Massive MIMO","display_name":"Energy-Efficient Hybrid Precoding Schemes for RIS-Assisted Millimeter-wave Massive MIMO","publication_year":2021,"publication_date":"2021-09-07","ids":{"openalex":"https://openalex.org/W4200056222","doi":"https://doi.org/10.1109/meditcom49071.2021.9647463"},"language":"en","primary_location":{"id":"doi:10.1109/meditcom49071.2021.9647463","is_oa":false,"landing_page_url":"https://doi.org/10.1109/meditcom49071.2021.9647463","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2021 IEEE International Mediterranean Conference on Communications and Networking (MeditCom)","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/A5040097614","display_name":"Nura K. Daghari","orcid":null},"institutions":[{"id":"https://openalex.org/I23906160","display_name":"University of Tripoli","ror":"https://ror.org/00taa2s29","country_code":"LY","type":"education","lineage":["https://openalex.org/I23906160"]}],"countries":["LY"],"is_corresponding":false,"raw_author_name":"Nura K. Daghari","raw_affiliation_strings":["Department of Electrical and Electronic Engineering, University of Tripoli, Libya"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical and Electronic Engineering, University of Tripoli, Libya","institution_ids":["https://openalex.org/I23906160"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5068313736","display_name":"Taissir Y. Elganimi","orcid":"https://orcid.org/0000-0002-2401-6264"},"institutions":[{"id":"https://openalex.org/I23906160","display_name":"University of Tripoli","ror":"https://ror.org/00taa2s29","country_code":"LY","type":"education","lineage":["https://openalex.org/I23906160"]}],"countries":["LY"],"is_corresponding":false,"raw_author_name":"Taissir Y. Elganimi","raw_affiliation_strings":["Department of Electrical and Electronic Engineering, University of Tripoli, Libya"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical and Electronic Engineering, University of Tripoli, Libya","institution_ids":["https://openalex.org/I23906160"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5030692615","display_name":"Khaled M. Rabie","orcid":"https://orcid.org/0000-0002-9784-3703"},"institutions":[{"id":"https://openalex.org/I11983389","display_name":"Manchester Metropolitan University","ror":"https://ror.org/02hstj355","country_code":"GB","type":"education","lineage":["https://openalex.org/I11983389"]},{"id":"https://openalex.org/I24027795","display_name":"University of Johannesburg","ror":"https://ror.org/04z6c2n17","country_code":"ZA","type":"education","lineage":["https://openalex.org/I24027795"]}],"countries":["GB","ZA"],"is_corresponding":false,"raw_author_name":"Khaled M. Rabie","raw_affiliation_strings":["Manchester Metropolitan University, United Kingdom","University of Johannesburg, South Africa"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Manchester Metropolitan University, United Kingdom","institution_ids":["https://openalex.org/I11983389"]},{"raw_affiliation_string":"University of Johannesburg, South Africa","institution_ids":["https://openalex.org/I24027795"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.8307,"has_fulltext":false,"cited_by_count":19,"citation_normalized_percentile":{"value":0.85604917,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":99},"biblio":{"volume":null,"issue":null,"first_page":"294","last_page":"299"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11458","display_name":"Advanced Wireless Communication Technologies","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"}},"topics":[{"id":"https://openalex.org/T11458","display_name":"Advanced Wireless Communication Technologies","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/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/T10069","display_name":"Antenna Design and Analysis","score":0.9972000122070312,"subfield":{"id":"https://openalex.org/subfields/2202","display_name":"Aerospace 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":0.9738162159919739},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7022828459739685},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.6289414763450623},{"id":"https://openalex.org/keywords/efficient-energy-use","display_name":"Efficient energy use","score":0.6208232045173645},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.557666540145874},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.5273869037628174},{"id":"https://openalex.org/keywords/zero-forcing-precoding","display_name":"Zero-forcing precoding","score":0.46027421951293945},{"id":"https://openalex.org/keywords/transmission","display_name":"Transmission (telecommunications)","score":0.4457828104496002},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.39808031916618347},{"id":"https://openalex.org/keywords/computer-engineering","display_name":"Computer engineering","score":0.32830941677093506},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.23869693279266357},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.22362250089645386},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.18338117003440857},{"id":"https://openalex.org/keywords/electrical-engineering","display_name":"Electrical engineering","score":0.14811056852340698}],"concepts":[{"id":"https://openalex.org/C160562895","wikidata":"https://www.wikidata.org/wiki/Q7239557","display_name":"Precoding","level":4,"score":0.9738162159919739},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7022828459739685},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.6289414763450623},{"id":"https://openalex.org/C2742236","wikidata":"https://www.wikidata.org/wiki/Q924713","display_name":"Efficient energy use","level":2,"score":0.6208232045173645},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.557666540145874},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.5273869037628174},{"id":"https://openalex.org/C155437304","wikidata":"https://www.wikidata.org/wiki/Q8069444","display_name":"Zero-forcing precoding","level":5,"score":0.46027421951293945},{"id":"https://openalex.org/C761482","wikidata":"https://www.wikidata.org/wiki/Q118093","display_name":"Transmission (telecommunications)","level":2,"score":0.4457828104496002},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.39808031916618347},{"id":"https://openalex.org/C113775141","wikidata":"https://www.wikidata.org/wiki/Q428691","display_name":"Computer engineering","level":1,"score":0.32830941677093506},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.23869693279266357},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.22362250089645386},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.18338117003440857},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.14811056852340698}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/meditcom49071.2021.9647463","is_oa":false,"landing_page_url":"https://doi.org/10.1109/meditcom49071.2021.9647463","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2021 IEEE International Mediterranean Conference on Communications and Networking (MeditCom)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.8999999761581421,"id":"https://metadata.un.org/sdg/7","display_name":"Affordable and clean energy"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":19,"referenced_works":["https://openalex.org/W1586395257","https://openalex.org/W1921359321","https://openalex.org/W2009618608","https://openalex.org/W2053521124","https://openalex.org/W2138020668","https://openalex.org/W2789683520","https://openalex.org/W2805166665","https://openalex.org/W2830550862","https://openalex.org/W2963182751","https://openalex.org/W2964076076","https://openalex.org/W2966939294","https://openalex.org/W2970297297","https://openalex.org/W2978495917","https://openalex.org/W2990747873","https://openalex.org/W3003050920","https://openalex.org/W3027460437","https://openalex.org/W3035386068","https://openalex.org/W3094017251","https://openalex.org/W3122864568"],"related_works":["https://openalex.org/W2111825998","https://openalex.org/W2326544815","https://openalex.org/W2489379490","https://openalex.org/W1973158664","https://openalex.org/W1731022149","https://openalex.org/W1996933839","https://openalex.org/W2000226056","https://openalex.org/W4315778014","https://openalex.org/W4386858283","https://openalex.org/W1979957996"],"abstract_inverted_index":{"Reconfigurable":[0],"intelligent":[1,32],"surfaces":[2],"(RIS)-assisted":[3],"multiuser":[4],"millimeter-wave":[5],"(mmWave)":[6],"wireless":[7,20],"transmitters":[8],"are":[9],"envisioned":[10],"to":[11,44,84,96,125],"be":[12],"an":[13,81],"attractive":[14,82],"paradigm":[15],"for":[16],"the":[17,46,65,86,98,102,107,116,119,126,137,143,147,155],"future":[18],"6G":[19],"systems":[21],"that":[22,55,136],"can":[23,160],"achieve":[24],"a":[25,28,41],"transmission":[26],"in":[27],"cost-effective,":[29],"energy-efficient":[30,51,59],"and":[31,58,61,63,101,159],"way.":[33],"In":[34,114],"this":[35],"paper,":[36],"RIS":[37],"is":[38,78,123,152],"introduced":[39],"as":[40,80],"promising":[42],"technology":[43],"assist":[45],"machine":[47],"learning":[48],"(ML)":[49],"inspired":[50],"hybrid":[52,111,121,130,139],"precoding":[53,89,112,131,140],"scheme":[54],"requires":[56],"low-cost":[57],"switches":[60],"inverters,":[62],"employs":[64],"idea":[66],"of":[67,106,118,128,149,157],"cross":[68],"entropy":[69],"(CE)":[70],"optimization.":[71],"More":[72],"specifically,":[73],"adaptive":[74],"CE":[75],"(ACE)":[76],"algorithm":[77],"adopted":[79],"technique":[83],"find":[85],"corresponding":[87],"optimal":[88],"weights.":[90],"Extensive":[91],"simulations":[92],"have":[93],"been":[94],"conducted":[95],"evaluate":[97],"achievable":[99],"sum-rate":[100],"energy":[103],"efficiency":[104],"(EE)":[105],"proposed":[108,120,138],"RIS-assisted":[109],"ACE-based":[110],"scheme.":[113],"addition,":[115],"performance":[117,127],"precoder":[122],"compared":[124],"conventional":[129,144],"schemes.":[132],"The":[133],"results":[134],"demonstrate":[135],"architecture":[141],"outperforms":[142],"schemes":[145],"when":[146],"number":[148,156],"reflecting":[150],"elements":[151],"higher":[153],"than":[154],"users,":[158],"potentially":[161],"offer":[162],"high":[163],"EE.":[164]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2024,"cited_by_count":5},{"year":2023,"cited_by_count":5},{"year":2022,"cited_by_count":7},{"year":2021,"cited_by_count":1}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}