{"id":"https://openalex.org/W3171276202","doi":"https://doi.org/10.1109/vtc2021-spring51267.2021.9448831","title":"Classification-based Optimal Beamforming for NOMA Wireless Relay Networks","display_name":"Classification-based Optimal Beamforming for NOMA Wireless Relay Networks","publication_year":2021,"publication_date":"2021-04-01","ids":{"openalex":"https://openalex.org/W3171276202","doi":"https://doi.org/10.1109/vtc2021-spring51267.2021.9448831","mag":"3171276202"},"language":"en","primary_location":{"id":"doi:10.1109/vtc2021-spring51267.2021.9448831","is_oa":false,"landing_page_url":"https://doi.org/10.1109/vtc2021-spring51267.2021.9448831","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring)","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/A5077915885","display_name":"Rung-Hung Gau","orcid":"https://orcid.org/0000-0002-3981-3733"},"institutions":[{"id":"https://openalex.org/I148366613","display_name":"National Yang Ming Chiao Tung University","ror":"https://ror.org/00se2k293","country_code":"TW","type":"education","lineage":["https://openalex.org/I148366613"]}],"countries":["TW"],"is_corresponding":false,"raw_author_name":"Rung-Hung Gau","raw_affiliation_strings":["Institute of Communications Engineering, National Chiao Tung University, Hsinchu, Taiwan","Institute of Communications Engineering, National Yang Ming Chiao Tung University, Hsinchu, Taiwan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Communications Engineering, National Chiao Tung University, Hsinchu, Taiwan","institution_ids":["https://openalex.org/I148366613"]},{"raw_affiliation_string":"Institute of Communications Engineering, National Yang Ming Chiao Tung University, Hsinchu, Taiwan","institution_ids":["https://openalex.org/I148366613"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5002752764","display_name":"Hsiao-Ting Chiu","orcid":"https://orcid.org/0000-0001-8277-5915"},"institutions":[{"id":"https://openalex.org/I148366613","display_name":"National Yang Ming Chiao Tung University","ror":"https://ror.org/00se2k293","country_code":"TW","type":"education","lineage":["https://openalex.org/I148366613"]}],"countries":["TW"],"is_corresponding":false,"raw_author_name":"Hsiao-Ting Chiu","raw_affiliation_strings":["Institute of Communications Engineering, National Chiao Tung University, Hsinchu, Taiwan","Institute of Communications Engineering, National Yang Ming Chiao Tung University, Hsinchu, Taiwan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Communications Engineering, National Chiao Tung University, Hsinchu, Taiwan","institution_ids":["https://openalex.org/I148366613"]},{"raw_affiliation_string":"Institute of Communications Engineering, National Yang Ming Chiao Tung University, Hsinchu, Taiwan","institution_ids":["https://openalex.org/I148366613"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5102319486","display_name":"Tsung-Che Lu","orcid":null},"institutions":[{"id":"https://openalex.org/I148366613","display_name":"National Yang Ming Chiao Tung University","ror":"https://ror.org/00se2k293","country_code":"TW","type":"education","lineage":["https://openalex.org/I148366613"]}],"countries":["TW"],"is_corresponding":false,"raw_author_name":"Tsung-Che Lu","raw_affiliation_strings":["Institute of Communications Engineering, National Chiao Tung University, Hsinchu, Taiwan","Institute of Communications Engineering, National Yang Ming Chiao Tung University, Hsinchu, Taiwan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Communications Engineering, National Chiao Tung University, Hsinchu, Taiwan","institution_ids":["https://openalex.org/I148366613"]},{"raw_affiliation_string":"Institute of Communications Engineering, National Yang Ming Chiao Tung University, Hsinchu, Taiwan","institution_ids":["https://openalex.org/I148366613"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I148366613"],"apc_list":null,"apc_paid":null,"fwci":0.814,"has_fulltext":false,"cited_by_count":2,"citation_normalized_percentile":{"value":0.62471982,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"7"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"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"}},"topics":[{"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"}},{"id":"https://openalex.org/T10069","display_name":"Antenna Design and Analysis","score":0.9933000206947327,"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"}},{"id":"https://openalex.org/T11392","display_name":"Energy Harvesting in Wireless Networks","score":0.9922999739646912,"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/beamforming","display_name":"Beamforming","score":0.8552612066268921},{"id":"https://openalex.org/keywords/relay","display_name":"Relay","score":0.7722813487052917},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6778466701507568},{"id":"https://openalex.org/keywords/wireless-network","display_name":"Wireless network","score":0.6413947343826294},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.5686376094818115},{"id":"https://openalex.org/keywords/noma","display_name":"Noma","score":0.49410703778266907},{"id":"https://openalex.org/keywords/transmission","display_name":"Transmission (telecommunications)","score":0.4803427457809448},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.45045357942581177},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.23341819643974304},{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.1435619294643402}],"concepts":[{"id":"https://openalex.org/C54197355","wikidata":"https://www.wikidata.org/wiki/Q5782992","display_name":"Beamforming","level":2,"score":0.8552612066268921},{"id":"https://openalex.org/C2778156585","wikidata":"https://www.wikidata.org/wiki/Q174053","display_name":"Relay","level":3,"score":0.7722813487052917},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6778466701507568},{"id":"https://openalex.org/C108037233","wikidata":"https://www.wikidata.org/wiki/Q11375","display_name":"Wireless network","level":3,"score":0.6413947343826294},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.5686376094818115},{"id":"https://openalex.org/C2775918612","wikidata":"https://www.wikidata.org/wiki/Q994794","display_name":"Noma","level":3,"score":0.49410703778266907},{"id":"https://openalex.org/C761482","wikidata":"https://www.wikidata.org/wiki/Q118093","display_name":"Transmission (telecommunications)","level":2,"score":0.4803427457809448},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.45045357942581177},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.23341819643974304},{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.1435619294643402},{"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},{"id":"https://openalex.org/C163258240","wikidata":"https://www.wikidata.org/wiki/Q25342","display_name":"Power (physics)","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/vtc2021-spring51267.2021.9448831","is_oa":false,"landing_page_url":"https://doi.org/10.1109/vtc2021-spring51267.2021.9448831","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring)","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/W1991312775","https://openalex.org/W1996215314","https://openalex.org/W2109005286","https://openalex.org/W2165350939","https://openalex.org/W2509696551","https://openalex.org/W2582550924","https://openalex.org/W2736774982","https://openalex.org/W2756040329","https://openalex.org/W2769321253","https://openalex.org/W2781540262","https://openalex.org/W2951205086","https://openalex.org/W2963698325","https://openalex.org/W2971360792","https://openalex.org/W3000499030","https://openalex.org/W3013691481","https://openalex.org/W3040048928"],"related_works":["https://openalex.org/W3030525848","https://openalex.org/W4385197910","https://openalex.org/W2340639785","https://openalex.org/W3010814398","https://openalex.org/W4385197899","https://openalex.org/W3005957545","https://openalex.org/W2076432172","https://openalex.org/W4309235375","https://openalex.org/W2887349183","https://openalex.org/W2886972134"],"abstract_inverted_index":{"In":[0],"this":[1],"paper,":[2],"we":[3,35,77,107],"study":[4],"the":[5,47,63,74,79,93,104,109,128,140,144,149],"problem":[6,113,119],"of":[7,25,89,135],"optimal":[8,87,111],"beamforming":[9,43,90,112,142,151],"for":[10,45,96],"non-orthogonal":[11],"multiple-access":[12],"(NOMA)":[13],"wireless":[14,20,55,68,98],"relay":[15,21,56,69,99],"networks.":[16],"For":[17,66],"a":[18,26,31,37,67,97,115,133],"two-hop":[19],"network":[22,70,100],"that":[23,40,71,101,127],"consists":[24],"NOMA":[27,54],"broadcasting":[28],"channel":[29,64],"and":[30,120,148],"Gaussian":[32],"interference":[33],"channel,":[34],"propose":[36],"novel":[38],"algorithm":[39],"efficiently":[41],"obtains":[42],"vectors":[44],"maximizing":[46],"end-to-end":[48],"sum":[49],"rate.":[50],"We":[51],"first":[52,75],"classifies":[53],"networks":[57],"into":[58,114],"two":[59],"classes":[60],"based":[61],"on":[62],"coefficients.":[65],"belongs":[72,102],"to":[73,84,103],"class,":[76,106],"use":[78],"maximal-ratio":[80,145],"transmission":[81,146],"(MRT)":[82],"technique":[83],"obtain":[85],"an":[86],"set":[88],"vectors.":[91],"On":[92],"other":[94],"hand,":[95],"second":[105],"transform":[108],"non-convex":[110],"semidefinite":[116],"programming":[117],"(SDP)":[118],"then":[121],"solve":[122],"it.":[123],"Simulation":[124],"results":[125],"show":[126],"proposed":[129],"approach":[130],"significantly":[131],"outperforms":[132],"number":[134],"alternative":[136],"schemes":[137],"such":[138],"as":[139],"random-phase":[141],"scheme,":[143,147],"zero-forcing":[150],"scheme.":[152]},"counts_by_year":[{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":1}],"updated_date":"2026-07-29T14:22:42.915294","created_date":"2025-10-10T00:00:00"}
