{"id":"https://openalex.org/W3199488400","doi":"https://doi.org/10.1109/tcomm.2022.3189386","title":"Secure Transmission for Hierarchical Information Accessibility in Downlink MU-MIMO","display_name":"Secure Transmission for Hierarchical Information Accessibility in Downlink MU-MIMO","publication_year":2022,"publication_date":"2022-07-07","ids":{"openalex":"https://openalex.org/W3199488400","doi":"https://doi.org/10.1109/tcomm.2022.3189386","mag":"3199488400"},"language":"en","primary_location":{"id":"doi:10.1109/tcomm.2022.3189386","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tcomm.2022.3189386","pdf_url":null,"source":{"id":"https://openalex.org/S196647941","display_name":"IEEE Transactions on Communications","issn_l":"0090-6778","issn":["0090-6778","1558-0857"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310316002","host_organization_name":"IEEE Communications Society","host_organization_lineage":["https://openalex.org/P4310316002","https://openalex.org/P4310319808"],"host_organization_lineage_names":["IEEE Communications Society","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 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/A5061418323","display_name":"Kanguk Lee","orcid":"https://orcid.org/0000-0002-9283-0700"},"institutions":[{"id":"https://openalex.org/I31419693","display_name":"Kyungpook National University","ror":"https://ror.org/040c17130","country_code":"KR","type":"education","lineage":["https://openalex.org/I31419693"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Kanguk Lee","raw_affiliation_strings":["School of Electronics Engineering, College of IT Engineering, Kyungpook National University, Daegu, South Korea"],"raw_orcid":"https://orcid.org/0000-0002-9283-0700","affiliations":[{"raw_affiliation_string":"School of Electronics Engineering, College of IT Engineering, Kyungpook National University, Daegu, South Korea","institution_ids":["https://openalex.org/I31419693"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5059421639","display_name":"Jinseok Choi","orcid":"https://orcid.org/0000-0002-2619-6078"},"institutions":[{"id":"https://openalex.org/I48566637","display_name":"Ulsan National Institute of Science and Technology","ror":"https://ror.org/017cjz748","country_code":"KR","type":"education","lineage":["https://openalex.org/I48566637"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Jinseok Choi","raw_affiliation_strings":["Department of Electrical Engineering, Ulsan National Institute of Science and Technology, Ulsan, South Korea"],"raw_orcid":"https://orcid.org/0000-0002-2619-6078","affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, Ulsan National Institute of Science and Technology, Ulsan, South Korea","institution_ids":["https://openalex.org/I48566637"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5007080664","display_name":"Dong Ku Kim","orcid":"https://orcid.org/0000-0002-5226-6463"},"institutions":[{"id":"https://openalex.org/I193775966","display_name":"Yonsei University","ror":"https://ror.org/01wjejq96","country_code":"KR","type":"education","lineage":["https://openalex.org/I193775966"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Dong Ku Kim","raw_affiliation_strings":["Department of Electrical and Electronic Engineering, Yonsei University, Seoul, South Korea"],"raw_orcid":"https://orcid.org/0000-0002-5226-6463","affiliations":[{"raw_affiliation_string":"Department of Electrical and Electronic Engineering, Yonsei University, Seoul, South Korea","institution_ids":["https://openalex.org/I193775966"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5080663906","display_name":"Jeonghun Park","orcid":"https://orcid.org/0000-0003-0789-8012"},"institutions":[{"id":"https://openalex.org/I31419693","display_name":"Kyungpook National University","ror":"https://ror.org/040c17130","country_code":"KR","type":"education","lineage":["https://openalex.org/I31419693"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Jeonghun Park","raw_affiliation_strings":["School of Electronics Engineering, College of IT Engineering, Kyungpook National University, Daegu, South Korea"],"raw_orcid":"https://orcid.org/0000-0003-0789-8012","affiliations":[{"raw_affiliation_string":"School of Electronics Engineering, College of IT Engineering, Kyungpook National University, Daegu, South Korea","institution_ids":["https://openalex.org/I31419693"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":4,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.3693,"has_fulltext":false,"cited_by_count":4,"citation_normalized_percentile":{"value":0.55342195,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":96},"biblio":{"volume":"70","issue":"9","first_page":"6181","last_page":"6195"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10964","display_name":"Wireless Communication Security Techniques","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/T10964","display_name":"Wireless Communication Security Techniques","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/T10148","display_name":"Advanced MIMO Systems Optimization","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"}},{"id":"https://openalex.org/T11458","display_name":"Advanced Wireless Communication Technologies","score":0.9991999864578247,"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/physical-layer","display_name":"Physical layer","score":0.6245361566543579},{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.5658936500549316},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.5638301968574524},{"id":"https://openalex.org/keywords/maximization","display_name":"Maximization","score":0.5569787621498108},{"id":"https://openalex.org/keywords/artificial-noise","display_name":"Artificial noise","score":0.5383445024490356},{"id":"https://openalex.org/keywords/precoding","display_name":"Precoding","score":0.5290518999099731},{"id":"https://openalex.org/keywords/mathematical-optimization","display_name":"Mathematical optimization","score":0.5175351500511169},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.48435840010643005},{"id":"https://openalex.org/keywords/secrecy","display_name":"Secrecy","score":0.4617806375026703},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.3975032567977905},{"id":"https://openalex.org/keywords/beamforming","display_name":"Beamforming","score":0.3257932662963867},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.2445964217185974},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.11632075905799866},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.10213863849639893},{"id":"https://openalex.org/keywords/computer-security","display_name":"Computer security","score":0.08986848592758179}],"concepts":[{"id":"https://openalex.org/C19247436","wikidata":"https://www.wikidata.org/wiki/Q192727","display_name":"Physical layer","level":3,"score":0.6245361566543579},{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.5658936500549316},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.5638301968574524},{"id":"https://openalex.org/C2776330181","wikidata":"https://www.wikidata.org/wiki/Q18358244","display_name":"Maximization","level":2,"score":0.5569787621498108},{"id":"https://openalex.org/C2780909371","wikidata":"https://www.wikidata.org/wiki/Q4801092","display_name":"Artificial noise","level":4,"score":0.5383445024490356},{"id":"https://openalex.org/C160562895","wikidata":"https://www.wikidata.org/wiki/Q7239557","display_name":"Precoding","level":4,"score":0.5290518999099731},{"id":"https://openalex.org/C126255220","wikidata":"https://www.wikidata.org/wiki/Q141495","display_name":"Mathematical optimization","level":1,"score":0.5175351500511169},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.48435840010643005},{"id":"https://openalex.org/C2776452267","wikidata":"https://www.wikidata.org/wiki/Q1503443","display_name":"Secrecy","level":2,"score":0.4617806375026703},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.3975032567977905},{"id":"https://openalex.org/C54197355","wikidata":"https://www.wikidata.org/wiki/Q5782992","display_name":"Beamforming","level":2,"score":0.3257932662963867},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.2445964217185974},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.11632075905799866},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.10213863849639893},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.08986848592758179}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/tcomm.2022.3189386","is_oa":false,"landing_page_url":"https://doi.org/10.1109/tcomm.2022.3189386","pdf_url":null,"source":{"id":"https://openalex.org/S196647941","display_name":"IEEE Transactions on Communications","issn_l":"0090-6778","issn":["0090-6778","1558-0857"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310316002","host_organization_name":"IEEE Communications Society","host_organization_lineage":["https://openalex.org/P4310316002","https://openalex.org/P4310319808"],"host_organization_lineage_names":["IEEE Communications Society","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 Communications","raw_type":"journal-article"},{"id":"pmh:oai:scholarworks.unist.ac.kr:201301/59710","is_oa":false,"landing_page_url":"https://scholarworks.unist.ac.kr/handle/201301/59710","pdf_url":null,"source":{"id":"https://openalex.org/S4306401118","display_name":"Scholarworks@UNIST (Ulsan National Institute of Science and Technology)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I48566637","host_organization_name":"Ulsan National Institute of Science and Technology","host_organization_lineage":["https://openalex.org/I48566637"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"ARTICLE"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/16","display_name":"Peace, Justice and strong institutions","score":0.8199999928474426}],"awards":[{"id":"https://openalex.org/G1286118216","display_name":null,"funder_award_id":"2019R1G1A1094703","funder_id":"https://openalex.org/F4320322120","funder_display_name":"National Research Foundation of Korea"},{"id":"https://openalex.org/G5271149397","display_name":null,"funder_award_id":"2021R1C1C1004438","funder_id":"https://openalex.org/F4320322120","funder_display_name":"National Research Foundation of Korea"}],"funders":[{"id":"https://openalex.org/F4320322120","display_name":"National Research Foundation of Korea","ror":"https://ror.org/013aysd81"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":52,"referenced_works":["https://openalex.org/W2015301486","https://openalex.org/W2043769961","https://openalex.org/W2093554016","https://openalex.org/W2119792344","https://openalex.org/W2121204123","https://openalex.org/W2125607229","https://openalex.org/W2136471217","https://openalex.org/W2146107742","https://openalex.org/W2161872841","https://openalex.org/W2163762663","https://openalex.org/W2271871887","https://openalex.org/W2310675558","https://openalex.org/W2340067998","https://openalex.org/W2472357683","https://openalex.org/W2511780722","https://openalex.org/W2516684393","https://openalex.org/W2520511335","https://openalex.org/W2551126468","https://openalex.org/W2582744858","https://openalex.org/W2620915951","https://openalex.org/W2754368137","https://openalex.org/W2788700462","https://openalex.org/W2791584529","https://openalex.org/W2807295554","https://openalex.org/W2883219835","https://openalex.org/W2886997539","https://openalex.org/W2889864884","https://openalex.org/W2913340256","https://openalex.org/W2914750214","https://openalex.org/W2962967525","https://openalex.org/W2963425522","https://openalex.org/W2963674318","https://openalex.org/W2964113506","https://openalex.org/W2964733302","https://openalex.org/W2965878254","https://openalex.org/W2968746919","https://openalex.org/W2974939732","https://openalex.org/W2999490868","https://openalex.org/W3029369914","https://openalex.org/W3046681313","https://openalex.org/W3104609710","https://openalex.org/W3105516132","https://openalex.org/W3121079316","https://openalex.org/W3125330224","https://openalex.org/W3161594686","https://openalex.org/W3190377976","https://openalex.org/W3194819463","https://openalex.org/W4210735171","https://openalex.org/W4239651601","https://openalex.org/W4287024905","https://openalex.org/W6799449706","https://openalex.org/W6800138101"],"related_works":["https://openalex.org/W1979654659","https://openalex.org/W2765236478","https://openalex.org/W2951619176","https://openalex.org/W2878548210","https://openalex.org/W2952382957","https://openalex.org/W4360996312","https://openalex.org/W2994678687","https://openalex.org/W3159852908","https://openalex.org/W2529506699","https://openalex.org/W4390240227"],"abstract_inverted_index":{"Physical":[0],"layer":[1,25],"security":[2],"is":[3,40,53,78,99,124,129,139,158],"a":[4,19,42,45,65,132,155,162,171],"useful":[5],"tool":[6],"to":[7,11,73,90,141,160],"prevent":[8],"illegal":[9],"wiretapping":[10],"confidential":[12],"information.":[13],"In":[14],"this":[15,60,167],"paper,":[16],"we":[17,63,105,151,169],"consider":[18],"generalized":[20,175],"model":[21,39],"of":[22,36,146,193],"conventional":[23],"physical":[24],"security,":[26],"referred":[27],"as":[28,131],"hierarchical":[29],"information":[30,48],"accessibility":[31],"(HIA).":[32],"A":[33],"main":[34],"feature":[35],"the":[37,87,92,97,103,107,112,117,126,137,142,147,184,194],"HIA":[38,61,93,179],"that":[41,125,153,183],"network":[43],"has":[44],"hierarchy":[46],"in":[47,191],"access,":[49],"wherein":[50],"decoding":[51],"feasibility":[52],"determined":[54],"by":[55,110],"each":[56],"user\u2019s":[57],"priority.":[58],"Under":[59],"model,":[62],"formulate":[64],"sum":[66],"secrecy":[67,88,195],"rate":[68,89],"maximization":[69],"problem":[70,77,98],"with":[71],"regard":[72],"precoding":[74],"vectors.":[75],"This":[76],"challenging":[79],"since":[80],"multiple":[81],"non-smooth":[82],"functions":[83],"are":[84],"involved":[85],"into":[86],"fulfill":[91],"conditions":[94],"and":[95],"also":[96],"non-convex.":[100],"To":[101,166],"address":[102],"challenges,":[104],"approximate":[106],"minimum":[108],"function":[109,145],"using":[111],"LogSumExp":[113],"technique,":[114],"thereafter":[115],"obtain":[116],"first-order":[118],"optimality":[119],"condition.":[120],"One":[121],"key":[122],"observation":[123],"derived":[127],"condition":[128],"cast":[130],"functional":[133],"eigenvalue":[134,138],"problem,":[135],"where":[136],"equivalent":[140,159],"approximated":[143],"objective":[144],"formulated":[148],"problem.":[149],"Accordingly,":[150],"show":[152],"finding":[154,161],"principal":[156],"eigenvector":[157],"local":[163],"optimal":[164],"solution.":[165],"end,":[168],"develop":[170],"novel":[172],"method":[173],"called":[174],"power":[176],"iteration":[177],"for":[178],"(GPI-HIA).":[180],"Simulations":[181],"demonstrate":[182],"GPI-HIA":[185],"significantly":[186],"outperforms":[187],"other":[188],"baseline":[189],"methods":[190],"terms":[192],"rate.":[196]},"counts_by_year":[{"year":2025,"cited_by_count":1},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":2}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}
