{"id":"https://openalex.org/W2133898381","doi":"https://doi.org/10.1109/glocom.2012.6503295","title":"Enhancing the performance of spectrum-sharing systems via collaborative distributed beamforming and AF relaying","display_name":"Enhancing the performance of spectrum-sharing systems via collaborative distributed beamforming and AF relaying","publication_year":2012,"publication_date":"2012-12-01","ids":{"openalex":"https://openalex.org/W2133898381","doi":"https://doi.org/10.1109/glocom.2012.6503295","mag":"2133898381"},"language":"en","primary_location":{"id":"doi:10.1109/glocom.2012.6503295","is_oa":false,"landing_page_url":"https://doi.org/10.1109/glocom.2012.6503295","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2012 IEEE Global Communications Conference (GLOBECOM)","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/A5071889415","display_name":"Ali Afana","orcid":"https://orcid.org/0000-0001-5253-2429"},"institutions":[{"id":"https://openalex.org/I60158472","display_name":"Concordia University","ror":"https://ror.org/0420zvk78","country_code":"CA","type":"education","lineage":["https://openalex.org/I60158472"]}],"countries":["CA"],"is_corresponding":true,"raw_author_name":"Ali Afana","raw_affiliation_strings":["ECE Department, Concordia University, Montréal, Québec, Canada","ECE Department, Concordia University, Montreal, QUE, Canada"],"affiliations":[{"raw_affiliation_string":"ECE Department, Concordia University, Montréal, Québec, Canada","institution_ids":["https://openalex.org/I60158472"]},{"raw_affiliation_string":"ECE Department, Concordia University, Montreal, QUE, Canada","institution_ids":["https://openalex.org/I60158472"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5102911212","display_name":"Vahid Asghari","orcid":"https://orcid.org/0000-0002-3319-2753"},"institutions":[{"id":"https://openalex.org/I39481719","display_name":"Institut National de la Recherche Scientifique","ror":"https://ror.org/04td37d32","country_code":"CA","type":"education","lineage":["https://openalex.org/I39481719","https://openalex.org/I49663120"]},{"id":"https://openalex.org/I159129438","display_name":"Universit\u00e9 du Qu\u00e9bec \u00e0 Montr\u00e9al","ror":"https://ror.org/002rjbv21","country_code":"CA","type":"education","lineage":["https://openalex.org/I159129438","https://openalex.org/I49663120"]},{"id":"https://openalex.org/I60158472","display_name":"Concordia University","ror":"https://ror.org/0420zvk78","country_code":"CA","type":"education","lineage":["https://openalex.org/I60158472"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Vahid Asghari","raw_affiliation_strings":["ECE Department, Concordia University, Montréal, Québec, Canada","INRS-EMT, University of Quebec, Montreal, QUE, Canada","ECE Department, Concordia University, Montreal, QUE, Canada"],"affiliations":[{"raw_affiliation_string":"ECE Department, Concordia University, Montréal, Québec, Canada","institution_ids":["https://openalex.org/I60158472"]},{"raw_affiliation_string":"INRS-EMT, University of Quebec, Montreal, QUE, Canada","institution_ids":["https://openalex.org/I159129438","https://openalex.org/I39481719"]},{"raw_affiliation_string":"ECE Department, Concordia University, Montreal, QUE, Canada","institution_ids":["https://openalex.org/I60158472"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5014049864","display_name":"Ali Ghrayeb","orcid":"https://orcid.org/0000-0002-6808-5886"},"institutions":[{"id":"https://openalex.org/I60158472","display_name":"Concordia University","ror":"https://ror.org/0420zvk78","country_code":"CA","type":"education","lineage":["https://openalex.org/I60158472"]},{"id":"https://openalex.org/I58152225","display_name":"Texas A&M University at Qatar","ror":"https://ror.org/03vb4dm14","country_code":"QA","type":"education","lineage":["https://openalex.org/I58152225","https://openalex.org/I91045830"]}],"countries":["CA","QA"],"is_corresponding":false,"raw_author_name":"Ali Ghrayeb","raw_affiliation_strings":["ECE Department, Concordia University, Montréal, Québec, Canada","ECE Department, Concordia University, Montreal, QUE, Canada","ECE Department, Texas A and M University, Doha, Qatar"],"affiliations":[{"raw_affiliation_string":"ECE Department, Concordia University, Montréal, Québec, Canada","institution_ids":["https://openalex.org/I60158472"]},{"raw_affiliation_string":"ECE Department, Concordia University, Montreal, QUE, Canada","institution_ids":["https://openalex.org/I60158472"]},{"raw_affiliation_string":"ECE Department, Texas A and M University, Doha, Qatar","institution_ids":["https://openalex.org/I58152225"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5076850812","display_name":"Sofi\u00e8ne Affes","orcid":"https://orcid.org/0000-0002-1729-3503"},"institutions":[{"id":"https://openalex.org/I39481719","display_name":"Institut National de la Recherche Scientifique","ror":"https://ror.org/04td37d32","country_code":"CA","type":"education","lineage":["https://openalex.org/I39481719","https://openalex.org/I49663120"]},{"id":"https://openalex.org/I159129438","display_name":"Universit\u00e9 du Qu\u00e9bec \u00e0 Montr\u00e9al","ror":"https://ror.org/002rjbv21","country_code":"CA","type":"education","lineage":["https://openalex.org/I159129438","https://openalex.org/I49663120"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Sofi\u00e9ne Affes","raw_affiliation_strings":["INRS-EMT, University of Quebec, Montréal, Canada","INRS-EMT, University of Quebec, Montreal, QUE, Canada"],"affiliations":[{"raw_affiliation_string":"INRS-EMT, University of Quebec, Montréal, Canada","institution_ids":["https://openalex.org/I39481719"]},{"raw_affiliation_string":"INRS-EMT, University of Quebec, Montreal, QUE, Canada","institution_ids":["https://openalex.org/I159129438","https://openalex.org/I39481719"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":4,"corresponding_author_ids":["https://openalex.org/A5071889415"],"corresponding_institution_ids":["https://openalex.org/I60158472"],"apc_list":null,"apc_paid":null,"fwci":2.4822,"has_fulltext":false,"cited_by_count":9,"citation_normalized_percentile":{"value":0.90098385,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":90,"max":97},"biblio":{"volume":null,"issue":null,"first_page":"1314","last_page":"1319"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10796","display_name":"Cooperative Communication and Network Coding","score":0.9998999834060669,"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/T10796","display_name":"Cooperative Communication and Network Coding","score":0.9998999834060669,"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/T10579","display_name":"Cognitive Radio Networks and Spectrum Sensing","score":0.9998000264167786,"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/T10148","display_name":"Advanced MIMO Systems Optimization","score":0.9993000030517578,"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/cognitive-radio","display_name":"Cognitive radio","score":0.8091328144073486},{"id":"https://openalex.org/keywords/relay","display_name":"Relay","score":0.7393062710762024},{"id":"https://openalex.org/keywords/rayleigh-fading","display_name":"Rayleigh fading","score":0.6734901666641235},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6689873337745667},{"id":"https://openalex.org/keywords/beamforming","display_name":"Beamforming","score":0.6261670589447021},{"id":"https://openalex.org/keywords/spectral-efficiency","display_name":"Spectral efficiency","score":0.572051465511322},{"id":"https://openalex.org/keywords/moment-generating-function","display_name":"Moment-generating function","score":0.5378476977348328},{"id":"https://openalex.org/keywords/cumulative-distribution-function","display_name":"Cumulative distribution function","score":0.5007009506225586},{"id":"https://openalex.org/keywords/interference","display_name":"Interference (communication)","score":0.49386030435562134},{"id":"https://openalex.org/keywords/context","display_name":"Context (archaeology)","score":0.4753964841365814},{"id":"https://openalex.org/keywords/signal-to-noise-ratio","display_name":"Signal-to-noise ratio (imaging)","score":0.4234289228916168},{"id":"https://openalex.org/keywords/fading","display_name":"Fading","score":0.38442230224609375},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.373857319355011},{"id":"https://openalex.org/keywords/topology","display_name":"Topology (electrical circuits)","score":0.37076833844184875},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.3265136480331421},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.2947029769420624},{"id":"https://openalex.org/keywords/probability-density-function","display_name":"Probability density function","score":0.23811915516853333},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.2292582094669342},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.2218833565711975},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.1889115869998932},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.18793246150016785},{"id":"https://openalex.org/keywords/electrical-engineering","display_name":"Electrical engineering","score":0.1077958345413208},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.07296022772789001}],"concepts":[{"id":"https://openalex.org/C149946192","wikidata":"https://www.wikidata.org/wiki/Q3235733","display_name":"Cognitive radio","level":3,"score":0.8091328144073486},{"id":"https://openalex.org/C2778156585","wikidata":"https://www.wikidata.org/wiki/Q174053","display_name":"Relay","level":3,"score":0.7393062710762024},{"id":"https://openalex.org/C56985126","wikidata":"https://www.wikidata.org/wiki/Q854039","display_name":"Rayleigh fading","level":4,"score":0.6734901666641235},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6689873337745667},{"id":"https://openalex.org/C54197355","wikidata":"https://www.wikidata.org/wiki/Q5782992","display_name":"Beamforming","level":2,"score":0.6261670589447021},{"id":"https://openalex.org/C137246740","wikidata":"https://www.wikidata.org/wiki/Q583970","display_name":"Spectral efficiency","level":3,"score":0.572051465511322},{"id":"https://openalex.org/C101796028","wikidata":"https://www.wikidata.org/wiki/Q535587","display_name":"Moment-generating function","level":3,"score":0.5378476977348328},{"id":"https://openalex.org/C103784038","wikidata":"https://www.wikidata.org/wiki/Q386228","display_name":"Cumulative distribution function","level":3,"score":0.5007009506225586},{"id":"https://openalex.org/C32022120","wikidata":"https://www.wikidata.org/wiki/Q797225","display_name":"Interference (communication)","level":3,"score":0.49386030435562134},{"id":"https://openalex.org/C2779343474","wikidata":"https://www.wikidata.org/wiki/Q3109175","display_name":"Context (archaeology)","level":2,"score":0.4753964841365814},{"id":"https://openalex.org/C13944312","wikidata":"https://www.wikidata.org/wiki/Q7512748","display_name":"Signal-to-noise ratio (imaging)","level":2,"score":0.4234289228916168},{"id":"https://openalex.org/C81978471","wikidata":"https://www.wikidata.org/wiki/Q1196572","display_name":"Fading","level":3,"score":0.38442230224609375},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.373857319355011},{"id":"https://openalex.org/C184720557","wikidata":"https://www.wikidata.org/wiki/Q7825049","display_name":"Topology (electrical circuits)","level":2,"score":0.37076833844184875},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.3265136480331421},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.2947029769420624},{"id":"https://openalex.org/C197055811","wikidata":"https://www.wikidata.org/wiki/Q207522","display_name":"Probability density function","level":2,"score":0.23811915516853333},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.2292582094669342},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.2218833565711975},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.1889115869998932},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.18793246150016785},{"id":"https://openalex.org/C119599485","wikidata":"https://www.wikidata.org/wiki/Q43035","display_name":"Electrical engineering","level":1,"score":0.1077958345413208},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.07296022772789001},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.0},{"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/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","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/glocom.2012.6503295","is_oa":false,"landing_page_url":"https://doi.org/10.1109/glocom.2012.6503295","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2012 IEEE Global Communications Conference (GLOBECOM)","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":17,"referenced_works":["https://openalex.org/W604181985","https://openalex.org/W1497583621","https://openalex.org/W1555197957","https://openalex.org/W1667165204","https://openalex.org/W2017931108","https://openalex.org/W2127593435","https://openalex.org/W2138123984","https://openalex.org/W2139794367","https://openalex.org/W2139887674","https://openalex.org/W2142116497","https://openalex.org/W2152121970","https://openalex.org/W2157005274","https://openalex.org/W2162146405","https://openalex.org/W2162539719","https://openalex.org/W2164402548","https://openalex.org/W2274604105","https://openalex.org/W2942228371"],"related_works":["https://openalex.org/W2168519368","https://openalex.org/W2049434049","https://openalex.org/W2115571348","https://openalex.org/W55148799","https://openalex.org/W2094966688","https://openalex.org/W2111779131","https://openalex.org/W2884577765","https://openalex.org/W2782728373","https://openalex.org/W4226479829","https://openalex.org/W2053548547"],"abstract_inverted_index":{"In":[0,31,75],"this":[1,76],"paper,":[2],"we":[3,33,78,109],"use":[4],"a":[5,35,40,49,58],"distributed":[6,126],"beamforming":[7,137],"method":[8],"in":[9,14,54,66,138,144],"cognitive":[10,28],"radio":[11],"relay":[12],"networks":[13],"an":[15,67],"effort":[16],"to":[17,47,105,146,150],"enhance":[18],"the":[19,24,27,55,80,84,90,96,101,107,114,134,140,148,151],"spectrum":[20,36],"efficiency":[21],"and":[22,69,89,117,124],"improve":[23],"performance":[25,143],"of":[26,42,51,57,95,136],"(secondary)":[29],"system.":[30],"particular,":[32],"consider":[34],"sharing":[37],"system":[38,142],"where":[39],"set":[41],"potential":[43],"relays":[44],"are":[45],"employed":[46],"help":[48],"pair":[50],"secondary":[52,102,141],"users":[53],"presence":[56],"licensed":[59],"(primary)":[60],"user.":[61],"A":[62],"selection":[63],"relaying":[64],"scenario":[65],"amplify":[68],"forward":[70],"(AF)":[71],"scheme":[72],"is":[73],"investigated.":[74],"context,":[77],"obtain":[79],"exact":[81],"expressions":[82,112],"for":[83,113],"cumulative":[85],"distribution":[86],"function":[87,93],"(CDF)":[88],"moment":[91],"generating":[92],"(MGF)":[94],"equivalent":[97],"end-to-end":[98],"SNR":[99],"at":[100],"destination.":[103],"Then,":[104],"analyze":[106],"performance,":[108],"derive":[110],"closed-form":[111],"outage":[115],"probability":[116],"bit":[118],"error":[119],"rate":[120],"(BER)":[121],"over":[122],"independent":[123],"identically":[125],"(i.i.d.)":[127],"Rayleigh":[128],"fading":[129],"channels.":[130],"Numerical":[131],"results":[132],"demonstrate":[133],"efficacy":[135],"improving":[139],"addition":[145],"limiting":[147],"interference":[149],"primary":[152],"users.":[153]},"counts_by_year":[{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":1},{"year":2015,"cited_by_count":1},{"year":2014,"cited_by_count":3},{"year":2013,"cited_by_count":3}],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}