{"id":"https://openalex.org/W2146695965","doi":"https://doi.org/10.1109/iwcmc.2014.6906458","title":"Joint channel estimation and pilot allocation in underlay cognitive MISO networks","display_name":"Joint channel estimation and pilot allocation in underlay cognitive MISO networks","publication_year":2014,"publication_date":"2014-08-01","ids":{"openalex":"https://openalex.org/W2146695965","doi":"https://doi.org/10.1109/iwcmc.2014.6906458","mag":"2146695965"},"language":"en","primary_location":{"id":"doi:10.1109/iwcmc.2014.6906458","is_oa":false,"landing_page_url":"https://doi.org/10.1109/iwcmc.2014.6906458","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2014 International Wireless Communications and Mobile Computing Conference (IWCMC)","raw_type":"proceedings-article"},"type":"preprint","indexed_in":["arxiv","crossref","datacite"],"open_access":{"is_oa":true,"oa_status":"green","oa_url":"https://arxiv.org/pdf/1505.02027","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5086735979","display_name":"Maha Alodeh","orcid":"https://orcid.org/0000-0001-9326-1100"},"institutions":[{"id":"https://openalex.org/I186903577","display_name":"University of Luxembourg","ror":"https://ror.org/036x5ad56","country_code":"LU","type":"education","lineage":["https://openalex.org/I186903577"]}],"countries":["LU"],"is_corresponding":true,"raw_author_name":"Maha Alodeh","raw_affiliation_strings":["Interdisciplinary Centre for Security, Reliability and Trust, University of Luxembourg, Luxembourg","University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) >"],"affiliations":[{"raw_affiliation_string":"Interdisciplinary Centre for Security, Reliability and Trust, University of Luxembourg, Luxembourg","institution_ids":["https://openalex.org/I186903577"]},{"raw_affiliation_string":"University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) >","institution_ids":["https://openalex.org/I186903577"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5016154330","display_name":"Symeon Chatzinotas","orcid":"https://orcid.org/0000-0001-5122-0001"},"institutions":[{"id":"https://openalex.org/I186903577","display_name":"University of Luxembourg","ror":"https://ror.org/036x5ad56","country_code":"LU","type":"education","lineage":["https://openalex.org/I186903577"]}],"countries":["LU"],"is_corresponding":false,"raw_author_name":"Symeon Chatzinotas","raw_affiliation_strings":["Interdisciplinary Centre for Security, Reliability and Trust, University of Luxembourg, Luxembourg","University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) >"],"affiliations":[{"raw_affiliation_string":"Interdisciplinary Centre for Security, Reliability and Trust, University of Luxembourg, Luxembourg","institution_ids":["https://openalex.org/I186903577"]},{"raw_affiliation_string":"University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) >","institution_ids":["https://openalex.org/I186903577"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5080037825","display_name":"Bj\u00f6rn Ottersten","orcid":"https://orcid.org/0000-0003-2298-6774"},"institutions":[{"id":"https://openalex.org/I186903577","display_name":"University of Luxembourg","ror":"https://ror.org/036x5ad56","country_code":"LU","type":"education","lineage":["https://openalex.org/I186903577"]}],"countries":["LU"],"is_corresponding":false,"raw_author_name":"Bjorn Ottersten","raw_affiliation_strings":["Interdisciplinary Centre for Security, Reliability and Trust, University of Luxembourg, Luxembourg","University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) >"],"affiliations":[{"raw_affiliation_string":"Interdisciplinary Centre for Security, Reliability and Trust, University of Luxembourg, Luxembourg","institution_ids":["https://openalex.org/I186903577"]},{"raw_affiliation_string":"University of Luxembourg > Interdisciplinary Centre for Security, Reliability and Trust (SNT) >","institution_ids":["https://openalex.org/I186903577"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5086735979"],"corresponding_institution_ids":["https://openalex.org/I186903577"],"apc_list":null,"apc_paid":null,"fwci":0.2128,"has_fulltext":true,"cited_by_count":1,"citation_normalized_percentile":{"value":0.6215016,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":90,"max":94},"biblio":{"volume":null,"issue":null,"first_page":"797","last_page":"802"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"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"}},"topics":[{"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/T10579","display_name":"Cognitive Radio Networks and Spectrum Sensing","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/T10796","display_name":"Cooperative Communication and Network Coding","score":0.9980999827384949,"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":0.7866052389144897},{"id":"https://openalex.org/keywords/cognitive-radio","display_name":"Cognitive radio","score":0.7027109861373901},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7025139331817627},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.6537570953369141},{"id":"https://openalex.org/keywords/channel-state-information","display_name":"Channel state information","score":0.6520029902458191},{"id":"https://openalex.org/keywords/telecommunications-link","display_name":"Telecommunications link","score":0.6091395616531372},{"id":"https://openalex.org/keywords/interference","display_name":"Interference (communication)","score":0.5975328683853149},{"id":"https://openalex.org/keywords/cognitive-network","display_name":"Cognitive network","score":0.5760047435760498},{"id":"https://openalex.org/keywords/beamforming","display_name":"Beamforming","score":0.572503387928009},{"id":"https://openalex.org/keywords/base-station","display_name":"Base station","score":0.5168643593788147},{"id":"https://openalex.org/keywords/precoding","display_name":"Precoding","score":0.48185646533966064},{"id":"https://openalex.org/keywords/covariance","display_name":"Covariance","score":0.4237239360809326},{"id":"https://openalex.org/keywords/exploit","display_name":"Exploit","score":0.41601982712745667},{"id":"https://openalex.org/keywords/mimo","display_name":"MIMO","score":0.39271023869514465},{"id":"https://openalex.org/keywords/computer-network","display_name":"Computer network","score":0.3330783545970917},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.3095189929008484},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.21136420965194702},{"id":"https://openalex.org/keywords/signal-to-noise-ratio","display_name":"Signal-to-noise ratio (imaging)","score":0.17230260372161865},{"id":"https://openalex.org/keywords/statistics","display_name":"Statistics","score":0.12056130170822144},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.11782309412956238},{"id":"https://openalex.org/keywords/computer-security","display_name":"Computer security","score":0.06386920809745789}],"concepts":[{"id":"https://openalex.org/C2777679929","wikidata":"https://www.wikidata.org/wiki/Q7883709","display_name":"Underlay","level":3,"score":0.7866052389144897},{"id":"https://openalex.org/C149946192","wikidata":"https://www.wikidata.org/wiki/Q3235733","display_name":"Cognitive radio","level":3,"score":0.7027109861373901},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7025139331817627},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.6537570953369141},{"id":"https://openalex.org/C148063708","wikidata":"https://www.wikidata.org/wiki/Q5072511","display_name":"Channel state information","level":3,"score":0.6520029902458191},{"id":"https://openalex.org/C138660444","wikidata":"https://www.wikidata.org/wiki/Q5607897","display_name":"Telecommunications link","level":2,"score":0.6091395616531372},{"id":"https://openalex.org/C32022120","wikidata":"https://www.wikidata.org/wiki/Q797225","display_name":"Interference (communication)","level":3,"score":0.5975328683853149},{"id":"https://openalex.org/C32542511","wikidata":"https://www.wikidata.org/wiki/Q5141225","display_name":"Cognitive network","level":4,"score":0.5760047435760498},{"id":"https://openalex.org/C54197355","wikidata":"https://www.wikidata.org/wiki/Q5782992","display_name":"Beamforming","level":2,"score":0.572503387928009},{"id":"https://openalex.org/C68649174","wikidata":"https://www.wikidata.org/wiki/Q1379116","display_name":"Base station","level":2,"score":0.5168643593788147},{"id":"https://openalex.org/C160562895","wikidata":"https://www.wikidata.org/wiki/Q7239557","display_name":"Precoding","level":4,"score":0.48185646533966064},{"id":"https://openalex.org/C178650346","wikidata":"https://www.wikidata.org/wiki/Q201984","display_name":"Covariance","level":2,"score":0.4237239360809326},{"id":"https://openalex.org/C165696696","wikidata":"https://www.wikidata.org/wiki/Q11287","display_name":"Exploit","level":2,"score":0.41601982712745667},{"id":"https://openalex.org/C207987634","wikidata":"https://www.wikidata.org/wiki/Q176862","display_name":"MIMO","level":3,"score":0.39271023869514465},{"id":"https://openalex.org/C31258907","wikidata":"https://www.wikidata.org/wiki/Q1301371","display_name":"Computer network","level":1,"score":0.3330783545970917},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.3095189929008484},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.21136420965194702},{"id":"https://openalex.org/C13944312","wikidata":"https://www.wikidata.org/wiki/Q7512748","display_name":"Signal-to-noise ratio (imaging)","level":2,"score":0.17230260372161865},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.12056130170822144},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.11782309412956238},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.06386920809745789}],"mesh":[],"locations_count":5,"locations":[{"id":"doi:10.1109/iwcmc.2014.6906458","is_oa":false,"landing_page_url":"https://doi.org/10.1109/iwcmc.2014.6906458","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2014 International Wireless Communications and Mobile Computing Conference (IWCMC)","raw_type":"proceedings-article"},{"id":"pmh:oai:arXiv.org:1505.02027","is_oa":true,"landing_page_url":"http://arxiv.org/abs/1505.02027","pdf_url":"https://arxiv.org/pdf/1505.02027","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},{"id":"mag:2146695965","is_oa":true,"landing_page_url":"https://arxiv.org/pdf/1505.02027.pdf","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"arXiv (Cornell University)","raw_type":null},{"id":"pmh:oai:orbilu.uni.lu:10993/16089","is_oa":true,"landing_page_url":"https://orbilu.uni.lu/handle/10993/16089","pdf_url":null,"source":{"id":"https://openalex.org/S4306401815","display_name":"Open Repository and Bibliography (University of Luxembourg)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I186903577","host_organization_name":"University of Luxembourg","host_organization_lineage":["https://openalex.org/I186903577"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"IEEE International Wireless Communications and Mobile Computing Conference.  (2014).","raw_type":null},{"id":"doi:10.48550/arxiv.1505.02027","is_oa":true,"landing_page_url":"https://doi.org/10.48550/arxiv.1505.02027","pdf_url":null,"source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":null,"raw_source_name":null,"raw_type":"article"}],"best_oa_location":{"id":"pmh:oai:arXiv.org:1505.02027","is_oa":true,"landing_page_url":"http://arxiv.org/abs/1505.02027","pdf_url":"https://arxiv.org/pdf/1505.02027","source":{"id":"https://openalex.org/S4306400194","display_name":"arXiv (Cornell University)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I205783295","host_organization_name":"Cornell University","host_organization_lineage":["https://openalex.org/I205783295"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"text"},"sustainable_development_goals":[],"awards":[],"funders":[{"id":"https://openalex.org/F4320321038","display_name":"Fonds National de la Recherche Luxembourg","ror":"https://ror.org/039z13y21"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2146695965.pdf","grobid_xml":"https://content.openalex.org/works/W2146695965.grobid-xml"},"referenced_works_count":12,"referenced_works":["https://openalex.org/W1974750125","https://openalex.org/W2015301486","https://openalex.org/W2051349938","https://openalex.org/W2071094343","https://openalex.org/W2071707134","https://openalex.org/W2113900577","https://openalex.org/W2121315337","https://openalex.org/W2124301782","https://openalex.org/W2127593435","https://openalex.org/W2145013959","https://openalex.org/W2165735999","https://openalex.org/W6661316620"],"related_works":["https://openalex.org/W1656030408","https://openalex.org/W2121170607","https://openalex.org/W2097677664","https://openalex.org/W2138388259","https://openalex.org/W1993134763","https://openalex.org/W2040674147","https://openalex.org/W2102109141","https://openalex.org/W2040622500","https://openalex.org/W2093391152","https://openalex.org/W2015998793","https://openalex.org/W1995741386","https://openalex.org/W2054512295","https://openalex.org/W2270647190","https://openalex.org/W2078039657","https://openalex.org/W2040812804","https://openalex.org/W2545689583","https://openalex.org/W2043419228","https://openalex.org/W2081018567","https://openalex.org/W2903129088","https://openalex.org/W2042398831"],"abstract_inverted_index":{"Cognitive":[0],"radios":[1],"have":[2],"been":[3],"proposed":[4,191],"as":[5],"agile":[6],"technologies":[7],"to":[8,68,119,130,145,164,198,217],"boost":[9],"the":[10,16,54,65,71,75,81,98,122,126,132,137,147,157,161,167,194,200,206,218,221],"spectrum":[11],"utilization.":[12],"This":[13],"paper":[14],"tackles":[15],"problem":[17,149],"of":[18,80,100,134,220],"channel":[19,83,103,113,123,168],"estimation":[20,114,124],"and":[21,36,45,115,129,139,152,214],"its":[22],"impact":[23,133],"on":[24],"downlink":[25],"transmissions":[26,72],"in":[27,91,150,160,174],"an":[28,88,143],"underlay":[29],"cognitive":[30,37,55,66,127,140,153,176],"radio":[31],"scenario.":[32],"We":[33,208],"consider":[34],"primary":[35,76,138,151],"base":[38],"stations,":[39],"each":[40],"equipped":[41],"with":[42,121],"multiple":[43,47,179],"antennas":[44],"serving":[46],"users.":[48],"Primary":[49],"networks":[50],"often":[51],"suffer":[52],"from":[53,74,170],"interference,":[56],"which":[57],"can":[58,96],"be":[59],"mitigated":[60],"by":[61,107,192,212],"deploying":[62],"beamforming":[63],"at":[64,125,136],"systems":[67],"spatially":[69],"direct":[70],"away":[73],"receivers.":[77],"The":[78],"accuracy":[79],"estimated":[82],"state":[84,219],"information":[85,158],"(CSI)":[86],"plays":[87],"important":[89],"role":[90],"designing":[92],"accurate":[93],"beamformers":[94],"that":[95,204],"regulate":[97],"amount":[99],"interference.":[101,108,207],"However,":[102],"estimate":[104,169],"is":[105,190],"affected":[106],"Therefore,":[109],"we":[110,155],"propose":[111],"different":[112],"pilot":[116],"allocation":[117],"techniques":[118],"deal":[120],"systems,":[128,154],"reduce":[131],"contamination":[135,148],"systems.":[141],"In":[142],"effort":[144],"tackle":[146],"exploit":[156],"embedded":[159],"covariance":[162],"matrices":[163],"successfully":[165],"separate":[166,199],"other":[171],"users'":[172],"channels":[173],"correlated":[175],"single":[177],"input":[178,180],"(SIMO)":[181],"channels.":[182],"A":[183],"minimum":[184],"mean":[185],"square":[186],"error":[187],"(MMSE)":[188],"framework":[189],"utilizing":[193],"second":[195],"order":[196],"statistics":[197],"overlapping":[201],"spatial":[202],"paths":[203],"create":[205],"validate":[209],"our":[210],"algorithms":[211],"simulation":[213],"compare":[215],"them":[216],"art":[222],"techniques.":[223]},"counts_by_year":[{"year":2015,"cited_by_count":1}],"updated_date":"2026-03-27T05:58:40.876381","created_date":"2025-10-10T00:00:00"}
