{"id":"https://openalex.org/W2289420784","doi":"https://doi.org/10.1109/glocomw.2015.7414015","title":"Secure Degrees of Freedom in K-Helper MIMO Cognitive Radio Systems with No Eavesdropper CSI","display_name":"Secure Degrees of Freedom in K-Helper MIMO Cognitive Radio Systems with No Eavesdropper CSI","publication_year":2015,"publication_date":"2015-12-01","ids":{"openalex":"https://openalex.org/W2289420784","doi":"https://doi.org/10.1109/glocomw.2015.7414015","mag":"2289420784"},"language":"en","primary_location":{"id":"doi:10.1109/glocomw.2015.7414015","is_oa":false,"landing_page_url":"https://doi.org/10.1109/glocomw.2015.7414015","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2015 IEEE Globecom Workshops (GC Wkshps)","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/A5013499387","display_name":"Ping L\u00fc","orcid":null},"institutions":[{"id":"https://openalex.org/I106959904","display_name":"Florida Institute of Technology","ror":"https://ror.org/04atsbb87","country_code":"US","type":"education","lineage":["https://openalex.org/I106959904"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Ping Lu","raw_affiliation_strings":["Dept. of Electrical & Computer Eng., Florida Institute of Technology, Melbourne, FL, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Dept. of Electrical & Computer Eng., Florida Institute of Technology, Melbourne, FL, USA","institution_ids":["https://openalex.org/I106959904"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5103168223","display_name":"Hua Mu","orcid":"https://orcid.org/0000-0002-5001-9928"},"institutions":[{"id":"https://openalex.org/I106959904","display_name":"Florida Institute of Technology","ror":"https://ror.org/04atsbb87","country_code":"US","type":"education","lineage":["https://openalex.org/I106959904"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Hua Mu","raw_affiliation_strings":["Dept. of Electrical & Computer Eng., Florida Institute of Technology, Melbourne, FL, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Dept. of Electrical & Computer Eng., Florida Institute of Technology, Melbourne, FL, USA","institution_ids":["https://openalex.org/I106959904"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5034880586","display_name":"J.K. Tugnait","orcid":"https://orcid.org/0000-0002-0220-2453"},"institutions":[{"id":"https://openalex.org/I82497590","display_name":"Auburn University","ror":"https://ror.org/02v80fc35","country_code":"US","type":"education","lineage":["https://openalex.org/I82497590"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Jitendra K. Tugnait","raw_affiliation_strings":["Dept. of Electrical & Computer Eng., Auburn University, Auburn, AL, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Dept. of Electrical & Computer Eng., Auburn University, Auburn, AL, USA","institution_ids":["https://openalex.org/I82497590"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"1","last_page":"6"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10964","display_name":"Wireless Communication Security Techniques","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/T10964","display_name":"Wireless Communication Security Techniques","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/T11017","display_name":"Chaos-based Image/Signal Encryption","score":0.984499990940094,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"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/T10796","display_name":"Cooperative Communication and Network Coding","score":0.9764000177383423,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/eavesdropping","display_name":"Eavesdropping","score":0.811676025390625},{"id":"https://openalex.org/keywords/cognitive-radio","display_name":"Cognitive radio","score":0.7761197090148926},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6892188191413879},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.6346235871315002},{"id":"https://openalex.org/keywords/channel-state-information","display_name":"Channel state information","score":0.6090914607048035},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.5930818319320679},{"id":"https://openalex.org/keywords/secondary-source","display_name":"Secondary source","score":0.509257435798645},{"id":"https://openalex.org/keywords/beamforming","display_name":"Beamforming","score":0.4842779040336609},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.47950464487075806},{"id":"https://openalex.org/keywords/cooperative-mimo","display_name":"Cooperative MIMO","score":0.47682636976242065},{"id":"https://openalex.org/keywords/degrees-of-freedom","display_name":"Degrees of freedom (physics and chemistry)","score":0.42721351981163025},{"id":"https://openalex.org/keywords/interference","display_name":"Interference (communication)","score":0.4270244836807251},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.24423375725746155},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.21281316876411438},{"id":"https://openalex.org/keywords/multi-user-mimo","display_name":"Multi-user MIMO","score":0.21215850114822388},{"id":"https://openalex.org/keywords/physics","display_name":"Physics","score":0.09249365329742432}],"concepts":[{"id":"https://openalex.org/C2776788033","wikidata":"https://www.wikidata.org/wiki/Q320769","display_name":"Eavesdropping","level":2,"score":0.811676025390625},{"id":"https://openalex.org/C149946192","wikidata":"https://www.wikidata.org/wiki/Q3235733","display_name":"Cognitive radio","level":3,"score":0.7761197090148926},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6892188191413879},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.6346235871315002},{"id":"https://openalex.org/C148063708","wikidata":"https://www.wikidata.org/wiki/Q5072511","display_name":"Channel state information","level":3,"score":0.6090914607048035},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.5930818319320679},{"id":"https://openalex.org/C82979123","wikidata":"https://www.wikidata.org/wiki/Q905511","display_name":"Secondary source","level":2,"score":0.509257435798645},{"id":"https://openalex.org/C54197355","wikidata":"https://www.wikidata.org/wiki/Q5782992","display_name":"Beamforming","level":2,"score":0.4842779040336609},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.47950464487075806},{"id":"https://openalex.org/C2778079784","wikidata":"https://www.wikidata.org/wiki/Q25000112","display_name":"Cooperative MIMO","level":5,"score":0.47682636976242065},{"id":"https://openalex.org/C208081375","wikidata":"https://www.wikidata.org/wiki/Q274502","display_name":"Degrees of freedom (physics and chemistry)","level":2,"score":0.42721351981163025},{"id":"https://openalex.org/C32022120","wikidata":"https://www.wikidata.org/wiki/Q797225","display_name":"Interference (communication)","level":3,"score":0.4270244836807251},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.24423375725746155},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.21281316876411438},{"id":"https://openalex.org/C91330434","wikidata":"https://www.wikidata.org/wiki/Q738298","display_name":"Multi-user MIMO","level":4,"score":0.21215850114822388},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.09249365329742432},{"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/C36289849","wikidata":"https://www.wikidata.org/wiki/Q34749","display_name":"Social science","level":1,"score":0.0},{"id":"https://openalex.org/C144024400","wikidata":"https://www.wikidata.org/wiki/Q21201","display_name":"Sociology","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/glocomw.2015.7414015","is_oa":false,"landing_page_url":"https://doi.org/10.1109/glocomw.2015.7414015","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2015 IEEE Globecom Workshops (GC Wkshps)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.8299999833106995,"id":"https://metadata.un.org/sdg/16","display_name":"Peace, Justice and strong institutions"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":15,"referenced_works":["https://openalex.org/W1965903274","https://openalex.org/W1985665652","https://openalex.org/W1997701566","https://openalex.org/W1997834106","https://openalex.org/W2005700966","https://openalex.org/W2040918887","https://openalex.org/W2043430224","https://openalex.org/W2043769961","https://openalex.org/W2049181381","https://openalex.org/W2058772250","https://openalex.org/W2124620429","https://openalex.org/W2128153585","https://openalex.org/W3100037902","https://openalex.org/W6641868592","https://openalex.org/W6665282799"],"related_works":["https://openalex.org/W4387918499","https://openalex.org/W2772112465","https://openalex.org/W4386360526","https://openalex.org/W2368710903","https://openalex.org/W2158905603","https://openalex.org/W2766105476","https://openalex.org/W2735171729","https://openalex.org/W2769254131","https://openalex.org/W1993212162","https://openalex.org/W2011751543"],"abstract_inverted_index":{"Secure":[0],"degrees":[1],"of":[2,96],"freedom":[3],"(DoF)":[4],"in":[5,12],"MIMO":[6],"cognitive":[7,18],"radio":[8,19],"system":[9,20],"is":[10,105],"studied":[11],"this":[13,44],"paper.":[14],"We":[15,88],"consider":[16],"a":[17],"with":[21,85],"one":[22],"primary":[23,36,53,67,73,113],"source-destination":[24,28],"pair,":[25,75],"multiple":[26,46],"secondary":[27,47,61,77,120],"pairs":[29,49,79],"and":[30,80,115],"an":[31],"eavesdropper":[32,82],"against":[33,56],"whom":[34],"the":[35,81,90,94,127],"user":[37,48,74,78,114],"intends":[38],"to":[39,51,65,107],"secure":[40,52,91,109],"its":[41],"data.":[42],"In":[43,58],"system,":[45],"help":[50],"user's":[54,68],"data":[55],"eavesdropping.":[57],"return,":[59],"these":[60],"users":[62,121],"are":[63,83,130],"allowed":[64],"access":[66],"spectrum.":[69],"All":[70],"users,":[71],"including":[72],"K\u22652":[76],"equipped":[84],"M":[86],"antennas.":[87],"investigate":[89],"DoF":[92,110,116],"without":[93],"knowledge":[95],"eavesdropper's":[97],"channel":[98],"state":[99],"information":[100],"(CSI).":[101],"A":[102],"beamforming":[103],"design":[104],"proposed":[106],"achieve":[108],"d":[111,117],"for":[112,118],"all":[119],"if":[122],"Kd\u2264M.":[123],"Simulation":[124],"examples":[125],"corroborating":[126],"theoretical":[128],"results":[129],"presented.":[131]},"counts_by_year":[],"updated_date":"2026-07-14T23:27:15.235271","created_date":"2025-10-10T00:00:00"}