{"id":"https://openalex.org/W4412170899","doi":"https://doi.org/10.1109/lwc.2025.3587761","title":"Beamfocusing and Power Allocation for AN-Based PLS in Multiuser XL-MIMO With Multiple Eavesdroppers","display_name":"Beamfocusing and Power Allocation for AN-Based PLS in Multiuser XL-MIMO With Multiple Eavesdroppers","publication_year":2025,"publication_date":"2025-07-10","ids":{"openalex":"https://openalex.org/W4412170899","doi":"https://doi.org/10.1109/lwc.2025.3587761"},"language":"en","primary_location":{"id":"doi:10.1109/lwc.2025.3587761","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lwc.2025.3587761","pdf_url":null,"source":{"id":"https://openalex.org/S2500830676","display_name":"IEEE Wireless Communications Letters","issn_l":"2162-2337","issn":["2162-2337","2162-2345"],"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 Wireless Communications Letters","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/A5084162678","display_name":"Xiangjun Ma","orcid":"https://orcid.org/0000-0002-6104-4563"},"institutions":[{"id":"https://openalex.org/I134085113","display_name":"King Fahd University of Petroleum and Minerals","ror":"https://ror.org/03yez3163","country_code":"SA","type":"education","lineage":["https://openalex.org/I134085113"]}],"countries":["SA"],"is_corresponding":true,"raw_author_name":"Xiangjun Ma","raw_affiliation_strings":["Department of Electrical Engineering, Interdisciplinary Research Center for Communication Systems and Sensing, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia"],"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, Interdisciplinary Research Center for Communication Systems and Sensing, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia","institution_ids":["https://openalex.org/I134085113"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5090544525","display_name":"Ali A. Nasir","orcid":"https://orcid.org/0000-0001-5012-1562"},"institutions":[{"id":"https://openalex.org/I134085113","display_name":"King Fahd University of Petroleum and Minerals","ror":"https://ror.org/03yez3163","country_code":"SA","type":"education","lineage":["https://openalex.org/I134085113"]}],"countries":["SA"],"is_corresponding":false,"raw_author_name":"Ali Arshad Nasir","raw_affiliation_strings":["Department of Electrical Engineering, Interdisciplinary Research Center for Communication Systems and Sensing, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia"],"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, Interdisciplinary Research Center for Communication Systems and Sensing, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia","institution_ids":["https://openalex.org/I134085113"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5021191255","display_name":"Daniel Benevides da Costa","orcid":"https://orcid.org/0000-0002-5439-7475"},"institutions":[{"id":"https://openalex.org/I134085113","display_name":"King Fahd University of Petroleum and Minerals","ror":"https://ror.org/03yez3163","country_code":"SA","type":"education","lineage":["https://openalex.org/I134085113"]}],"countries":["SA"],"is_corresponding":false,"raw_author_name":"Daniel Benevides da Costa","raw_affiliation_strings":["Department of Electrical Engineering, Interdisciplinary Research Center for Communication Systems and Sensing, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia"],"affiliations":[{"raw_affiliation_string":"Department of Electrical Engineering, Interdisciplinary Research Center for Communication Systems and Sensing, King Fahd University of Petroleum and Minerals, Dhahran, Saudi Arabia","institution_ids":["https://openalex.org/I134085113"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5084162678"],"corresponding_institution_ids":["https://openalex.org/I134085113"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.17743354,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"14","issue":"10","first_page":"3149","last_page":"3153"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10575","display_name":"Wireless Communication Networks Research","score":0.9970999956130981,"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"}},"topics":[{"id":"https://openalex.org/T10575","display_name":"Wireless Communication Networks Research","score":0.9970999956130981,"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/T10125","display_name":"Advanced Wireless Communication Techniques","score":0.9930999875068665,"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":0.9882000088691711,"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":0.6925908327102661},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6350699663162231},{"id":"https://openalex.org/keywords/power","display_name":"Power (physics)","score":0.5110660791397095},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.40762606263160706},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.07059818506240845}],"concepts":[{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.6925908327102661},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6350699663162231},{"id":"https://openalex.org/C163258240","wikidata":"https://www.wikidata.org/wiki/Q25342","display_name":"Power (physics)","level":2,"score":0.5110660791397095},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.40762606263160706},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.07059818506240845},{"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/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/lwc.2025.3587761","is_oa":false,"landing_page_url":"https://doi.org/10.1109/lwc.2025.3587761","pdf_url":null,"source":{"id":"https://openalex.org/S2500830676","display_name":"IEEE Wireless Communications Letters","issn_l":"2162-2337","issn":["2162-2337","2162-2345"],"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 Wireless Communications Letters","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G1102151313","display_name":null,"funder_award_id":"DUP24103","funder_id":"https://openalex.org/F4320322323","funder_display_name":"King Fahd University of Petroleum and Minerals"},{"id":"https://openalex.org/G5886921738","display_name":null,"funder_award_id":"EC231014","funder_id":"https://openalex.org/F4320322323","funder_display_name":"King Fahd University of Petroleum and Minerals"}],"funders":[{"id":"https://openalex.org/F4320322323","display_name":"King Fahd University of Petroleum and Minerals","ror":"https://ror.org/03yez3163"}],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":13,"referenced_works":["https://openalex.org/W2316339223","https://openalex.org/W2974046131","https://openalex.org/W3040433108","https://openalex.org/W3101985270","https://openalex.org/W3175835023","https://openalex.org/W4293057548","https://openalex.org/W4297094903","https://openalex.org/W4313049690","https://openalex.org/W4385885073","https://openalex.org/W4391807577","https://openalex.org/W4394897019","https://openalex.org/W4399110306","https://openalex.org/W4399486976"],"related_works":["https://openalex.org/W4391375266","https://openalex.org/W2899084033","https://openalex.org/W2748952813","https://openalex.org/W2390279801","https://openalex.org/W4391913857","https://openalex.org/W2358668433","https://openalex.org/W4396701345","https://openalex.org/W2376932109","https://openalex.org/W2001405890","https://openalex.org/W4396696052"],"abstract_inverted_index":{"This":[0],"paper":[1],"investigates":[2],"downlink":[3],"(DL)":[4],"physical":[5],"layer":[6],"security":[7],"(PLS)":[8],"in":[9],"near-field":[10],"(NF)":[11],"extra-large":[12],"MIMO":[13],"(XL-MIMO)":[14],"systems.":[15],"To":[16],"enhance":[17],"secrecy":[18],"rate":[19],"(SR),":[20],"null-space":[21,111],"artificial":[22],"noise":[23],"(AN)":[24],"is":[25,40],"transmitted":[26],"alongside":[27],"confidential":[28],"messages,":[29],"remaining":[30],"orthogonal":[31],"to":[32,41],"legitimate":[33],"user":[34,106],"equipment":[35],"(LUE)":[36],"channels.":[37],"The":[38,72],"goal":[39],"maximize":[42],"the":[43,49,57,123],"minimum":[44],"SR":[45,100],"by":[46],"jointly":[47],"optimizing":[48],"NF":[50],"beamfocusing":[51],"matrix":[52],"and":[53,59,68,83,104,122],"power":[54,70,89],"allocation":[55],"between":[56],"signal":[58],"AN,":[60],"under":[61],"various":[62],"channel":[63],"state":[64],"information":[65],"(CSI)":[66],"conditions":[67],"transmit":[69],"constraints.":[71],"proposed":[73],"method":[74],"combines":[75],"successive":[76],"convex":[77],"approximation":[78],"(SCA)":[79],"for":[80,88],"beam":[81],"design":[82],"golden":[84],"section":[85],"search":[86],"(GSS)":[87],"allocation.":[90],"It":[91],"addresses":[92],"two":[93],"key":[94],"questions:":[95],"(i)":[96],"Can":[97,110],"AN":[98,112,131],"improve":[99],"with":[101],"multiple":[102],"LUEs":[103],"eavesdropping":[105],"equipments":[107],"(EUEs)?":[108],"(ii)":[109],"remain":[113],"effective":[114],"without":[115,130],"EUE":[116],"CSI?":[117],"Both":[118],"are":[119],"answered":[120],"affirmatively,":[121],"algorithm":[124],"shows":[125],"clear":[126],"gains":[127],"over":[128],"approaches":[129],"or":[132],"using":[133],"maximal-ratio":[134],"transmission":[135],"(MRT).":[136]},"counts_by_year":[],"updated_date":"2026-04-09T08:11:56.329763","created_date":"2025-10-10T00:00:00"}
