{"id":"https://openalex.org/W2805598364","doi":"https://doi.org/10.3390/s18061809","title":"Cooperative Feedback Bits Allocation and Transmit Power Control in Underlay Cognitive Radio Networks","display_name":"Cooperative Feedback Bits Allocation and Transmit Power Control in Underlay Cognitive Radio Networks","publication_year":2018,"publication_date":"2018-06-04","ids":{"openalex":"https://openalex.org/W2805598364","doi":"https://doi.org/10.3390/s18061809","mag":"2805598364","pmid":"https://pubmed.ncbi.nlm.nih.gov/29867017"},"language":"en","primary_location":{"id":"doi:10.3390/s18061809","is_oa":true,"landing_page_url":"https://doi.org/10.3390/s18061809","pdf_url":"https://www.mdpi.com/1424-8220/18/6/1809/pdf?version=1528102515","source":{"id":"https://openalex.org/S101949793","display_name":"Sensors","issn_l":"1424-8220","issn":["1424-8220"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj","pubmed"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.mdpi.com/1424-8220/18/6/1809/pdf?version=1528102515","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5103200458","display_name":"Deokhui Lee","orcid":"https://orcid.org/0000-0003-1835-0861"},"institutions":[{"id":"https://openalex.org/I148751991","display_name":"Sogang University","ror":"https://ror.org/056tn4839","country_code":"KR","type":"education","lineage":["https://openalex.org/I148751991"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Deokhui Lee","raw_affiliation_strings":["Department of Electronic Engineering, Sogang University, Seoul 04107, Korea"],"raw_orcid":"https://orcid.org/0000-0003-1835-0861","affiliations":[{"raw_affiliation_string":"Department of Electronic Engineering, Sogang University, Seoul 04107, Korea","institution_ids":["https://openalex.org/I148751991"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5079888022","display_name":"Jaewoo So","orcid":"https://orcid.org/0000-0001-7868-7197"},"institutions":[{"id":"https://openalex.org/I148751991","display_name":"Sogang University","ror":"https://ror.org/056tn4839","country_code":"KR","type":"education","lineage":["https://openalex.org/I148751991"]}],"countries":["KR"],"is_corresponding":true,"raw_author_name":"Jaewoo So","raw_affiliation_strings":["Department of Electronic Engineering, Sogang University, Seoul 04107, Korea"],"raw_orcid":"https://orcid.org/0000-0001-7868-7197","affiliations":[{"raw_affiliation_string":"Department of Electronic Engineering, Sogang University, Seoul 04107, Korea","institution_ids":["https://openalex.org/I148751991"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":["https://openalex.org/A5079888022"],"corresponding_institution_ids":["https://openalex.org/I148751991"],"apc_list":{"value":2400,"currency":"CHF","value_usd":2673},"apc_paid":{"value":2400,"currency":"CHF","value_usd":2673},"fwci":0.6855,"has_fulltext":false,"cited_by_count":6,"citation_normalized_percentile":{"value":0.75587645,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":96},"biblio":{"volume":"18","issue":"6","first_page":"1809","last_page":"1809"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10579","display_name":"Cognitive Radio Networks and Spectrum Sensing","score":1.0,"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/T10579","display_name":"Cognitive Radio Networks and Spectrum Sensing","score":1.0,"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":0.9998999834060669,"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/T10796","display_name":"Cooperative Communication and Network Coding","score":0.9995999932289124,"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/underlay","display_name":"Underlay","score":0.8971448540687561},{"id":"https://openalex.org/keywords/cognitive-radio","display_name":"Cognitive radio","score":0.757312536239624},{"id":"https://openalex.org/keywords/beamforming","display_name":"Beamforming","score":0.7558037042617798},{"id":"https://openalex.org/keywords/transmitter","display_name":"Transmitter","score":0.6943925023078918},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6665523052215576},{"id":"https://openalex.org/keywords/transmitter-power-output","display_name":"Transmitter power output","score":0.6654531955718994},{"id":"https://openalex.org/keywords/interference","display_name":"Interference (communication)","score":0.6283140778541565},{"id":"https://openalex.org/keywords/power-control","display_name":"Power control","score":0.5898704528808594},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.5357356071472168},{"id":"https://openalex.org/keywords/constraint","display_name":"Constraint (computer-aided design)","score":0.46923476457595825},{"id":"https://openalex.org/keywords/cognitive-network","display_name":"Cognitive network","score":0.4638180136680603},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.444810152053833},{"id":"https://openalex.org/keywords/channel-state-information","display_name":"Channel state information","score":0.4438195824623108},{"id":"https://openalex.org/keywords/power","display_name":"Power (physics)","score":0.37050873041152954},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.2925029397010803},{"id":"https://openalex.org/keywords/signal-to-noise-ratio","display_name":"Signal-to-noise ratio (imaging)","score":0.2081756293773651},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.1759413182735443},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.1373911201953888}],"concepts":[{"id":"https://openalex.org/C2777679929","wikidata":"https://www.wikidata.org/wiki/Q7883709","display_name":"Underlay","level":3,"score":0.8971448540687561},{"id":"https://openalex.org/C149946192","wikidata":"https://www.wikidata.org/wiki/Q3235733","display_name":"Cognitive radio","level":3,"score":0.757312536239624},{"id":"https://openalex.org/C54197355","wikidata":"https://www.wikidata.org/wiki/Q5782992","display_name":"Beamforming","level":2,"score":0.7558037042617798},{"id":"https://openalex.org/C47798520","wikidata":"https://www.wikidata.org/wiki/Q190157","display_name":"Transmitter","level":3,"score":0.6943925023078918},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6665523052215576},{"id":"https://openalex.org/C65422117","wikidata":"https://www.wikidata.org/wiki/Q358527","display_name":"Transmitter power output","level":4,"score":0.6654531955718994},{"id":"https://openalex.org/C32022120","wikidata":"https://www.wikidata.org/wiki/Q797225","display_name":"Interference (communication)","level":3,"score":0.6283140778541565},{"id":"https://openalex.org/C56685638","wikidata":"https://www.wikidata.org/wiki/Q2300474","display_name":"Power control","level":3,"score":0.5898704528808594},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.5357356071472168},{"id":"https://openalex.org/C2776036281","wikidata":"https://www.wikidata.org/wiki/Q48769818","display_name":"Constraint (computer-aided design)","level":2,"score":0.46923476457595825},{"id":"https://openalex.org/C32542511","wikidata":"https://www.wikidata.org/wiki/Q5141225","display_name":"Cognitive network","level":4,"score":0.4638180136680603},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.444810152053833},{"id":"https://openalex.org/C148063708","wikidata":"https://www.wikidata.org/wiki/Q5072511","display_name":"Channel state information","level":3,"score":0.4438195824623108},{"id":"https://openalex.org/C163258240","wikidata":"https://www.wikidata.org/wiki/Q25342","display_name":"Power (physics)","level":2,"score":0.37050873041152954},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.2925029397010803},{"id":"https://openalex.org/C13944312","wikidata":"https://www.wikidata.org/wiki/Q7512748","display_name":"Signal-to-noise ratio (imaging)","level":2,"score":0.2081756293773651},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.1759413182735443},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.1373911201953888},{"id":"https://openalex.org/C78519656","wikidata":"https://www.wikidata.org/wiki/Q101333","display_name":"Mechanical engineering","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/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0}],"mesh":[],"locations_count":5,"locations":[{"id":"doi:10.3390/s18061809","is_oa":true,"landing_page_url":"https://doi.org/10.3390/s18061809","pdf_url":"https://www.mdpi.com/1424-8220/18/6/1809/pdf?version=1528102515","source":{"id":"https://openalex.org/S101949793","display_name":"Sensors","issn_l":"1424-8220","issn":["1424-8220"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors","raw_type":"journal-article"},{"id":"pmid:29867017","is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/29867017","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors (Basel, Switzerland)","raw_type":null},{"id":"pmh:oai:doaj.org/article:0483edf89b4b4b9da7ddbf8040784ff0","is_oa":true,"landing_page_url":"https://doaj.org/article/0483edf89b4b4b9da7ddbf8040784ff0","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Sensors, Vol 18, Iss 6, p 1809 (2018)","raw_type":"article"},{"id":"pmh:oai:europepmc.org:4978384","is_oa":true,"landing_page_url":"https://www.ncbi.nlm.nih.gov/pmc/articles/6022095","pdf_url":null,"source":{"id":"https://openalex.org/S4306400806","display_name":"Europe PMC (PubMed Central)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1303153112","host_organization_name":"European Bioinformatics Institute","host_organization_lineage":["https://openalex.org/I1303153112"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"Text"},{"id":"pmh:oai:mdpi.com:/1424-8220/18/6/1809/","is_oa":true,"landing_page_url":"http://dx.doi.org/10.3390/s18061809","pdf_url":null,"source":{"id":"https://openalex.org/S4306400947","display_name":"MDPI (MDPI AG)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210097602","host_organization_name":"Multidisciplinary Digital Publishing Institute (Switzerland)","host_organization_lineage":["https://openalex.org/I4210097602"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Sensors","raw_type":"Text"}],"best_oa_location":{"id":"doi:10.3390/s18061809","is_oa":true,"landing_page_url":"https://doi.org/10.3390/s18061809","pdf_url":"https://www.mdpi.com/1424-8220/18/6/1809/pdf?version=1528102515","source":{"id":"https://openalex.org/S101949793","display_name":"Sensors","issn_l":"1424-8220","issn":["1424-8220"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G1130137903","display_name":null,"funder_award_id":"2016R1D1A1B03934150","funder_id":"https://openalex.org/F4320311687","funder_display_name":"Ministry of Education"}],"funders":[{"id":"https://openalex.org/F4320311687","display_name":"Ministry of Education","ror":"https://ror.org/03m01yf64"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":26,"referenced_works":["https://openalex.org/W1965009232","https://openalex.org/W1989127018","https://openalex.org/W2012276979","https://openalex.org/W2012418988","https://openalex.org/W2030142387","https://openalex.org/W2034991012","https://openalex.org/W2057721665","https://openalex.org/W2071707134","https://openalex.org/W2074120933","https://openalex.org/W2113271807","https://openalex.org/W2114058115","https://openalex.org/W2120509191","https://openalex.org/W2124858630","https://openalex.org/W2125434117","https://openalex.org/W2126059022","https://openalex.org/W2127593435","https://openalex.org/W2132505286","https://openalex.org/W2144369278","https://openalex.org/W2148124193","https://openalex.org/W2168124633","https://openalex.org/W2171871057","https://openalex.org/W2290556159","https://openalex.org/W2312519639","https://openalex.org/W3103721439","https://openalex.org/W4250589301","https://openalex.org/W6698672798"],"related_works":["https://openalex.org/W2006266362","https://openalex.org/W2131684146","https://openalex.org/W2885238370","https://openalex.org/W2034845478","https://openalex.org/W4386391606","https://openalex.org/W2561983451","https://openalex.org/W2989790135","https://openalex.org/W2519403816","https://openalex.org/W2124240980","https://openalex.org/W4306952706"],"abstract_inverted_index":{"In":[0],"this":[1],"paper,":[2],"we":[3,125,155],"consider":[4],"an":[5,87,157],"underlay":[6],"cognitive":[7,69,123],"radio":[8],"network":[9,58],"where":[10,97],"the":[11,16,21,35,39,46,52,56,60,63,68,73,79,98,105,111,117,122,127,131,134,137,145,150,167,173,182,187,194],"spectrum":[12],"is":[13,108],"shared":[14],"with":[15,33,166],"primary":[17,24,28,57],"network.":[18],"Due":[19],"to":[20,71,75,110,115],"coexistence":[22],"of":[23,82,130,136,190],"and":[25,59,95,149,172],"secondary":[26,42,61,64],"networks,":[27],"users":[29,43],"(PUs)":[30],"are":[31],"interfered":[32],"by":[34],"inter-network":[36],"interference,":[37],"at":[38,140,198],"same":[40],"time":[41],"(SUs)":[44],"counteract":[45],"intra-network":[47],"(inter-user)":[48],"interference.":[49],"Based":[50],"on":[51,121],"cooperative":[53],"feedback":[54,89,146,169],"between":[55],"network,":[62],"transmitter":[65],"(ST)":[66],"applies":[67],"beamforming":[70],"suppress":[72],"interference":[74,106,139,196],"PUs":[76,94],"while":[77,192],"improving":[78],"sum":[80,188],"rate":[81,189],"SUs.":[83],"We":[84],"herein":[85],"propose":[86],"adaptive":[88],"bits":[90,147,170],"allocation":[91,148,171],"among":[92],"multiple":[93],"SUs":[96,191],"quantized":[99],"channel":[100,107],"direction":[101],"information":[102],"(CDI)":[103],"for":[104],"forwarded":[109],"ST":[112,132],"in":[113],"order":[114],"utilize":[116],"beamforming.":[118],"Moreover,":[119],"based":[120],"beamforming,":[124],"adjust":[126],"transmit":[128,151,174],"power":[129,152,175],"under":[133],"constraint":[135,197],"average":[138,195],"PUs.":[141,199],"To":[142],"jointly":[143],"solve":[144],"control":[153,176],"problems,":[154],"formulate":[156],"optimization":[158],"problem":[159],"which":[160],"requires":[161],"a":[162],"little":[163],"iterations":[164],"compared":[165],"separated":[168],"problems.":[177],"Numerical":[178],"results":[179],"show":[180],"that":[181],"proposed":[183],"scheme":[184],"significantly":[185],"improves":[186],"satisfying":[193]},"counts_by_year":[{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":1},{"year":2020,"cited_by_count":1},{"year":2019,"cited_by_count":2},{"year":2018,"cited_by_count":1}],"updated_date":"2026-07-22T07:51:19.307946","created_date":"2025-10-10T00:00:00"}