{"id":"https://openalex.org/W2148246615","doi":"https://doi.org/10.1109/vetecf.2009.5379047","title":"Spectrum Sensing of Unsynchronized OFDM Signals for Cognitive Radio Communications","display_name":"Spectrum Sensing of Unsynchronized OFDM Signals for Cognitive Radio Communications","publication_year":2009,"publication_date":"2009-09-01","ids":{"openalex":"https://openalex.org/W2148246615","doi":"https://doi.org/10.1109/vetecf.2009.5379047","mag":"2148246615"},"language":"en","primary_location":{"id":"doi:10.1109/vetecf.2009.5379047","is_oa":false,"landing_page_url":"https://doi.org/10.1109/vetecf.2009.5379047","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2009 IEEE 70th Vehicular Technology Conference Fall","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/A5101615700","display_name":"Hanwei Chen","orcid":"https://orcid.org/0000-0001-9796-2414"},"institutions":[{"id":"https://openalex.org/I25846049","display_name":"National Tsing Hua University","ror":"https://ror.org/00zdnkx70","country_code":"TW","type":"education","lineage":["https://openalex.org/I25846049"]}],"countries":["TW"],"is_corresponding":false,"raw_author_name":"Han-Wei Chen","raw_affiliation_strings":["Institute of Communications Engineering, National Tsing Hua University, Taiwan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Communications Engineering, National Tsing Hua University, Taiwan","institution_ids":["https://openalex.org/I25846049"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100733413","display_name":"Xianbin Wang","orcid":"https://orcid.org/0000-0003-4890-0748"},"institutions":[{"id":"https://openalex.org/I125749732","display_name":"Western University","ror":"https://ror.org/02grkyz14","country_code":"CA","type":"education","lineage":["https://openalex.org/I125749732"]}],"countries":["CA"],"is_corresponding":false,"raw_author_name":"Xianbin Wang","raw_affiliation_strings":["Department of Electrical and Computer Engineering, University of Western Ontario, Canada"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical and Computer Engineering, University of Western Ontario, Canada","institution_ids":["https://openalex.org/I125749732"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5005169457","display_name":"Chin-Liang Wang","orcid":"https://orcid.org/0000-0002-3544-3165"},"institutions":[{"id":"https://openalex.org/I25846049","display_name":"National Tsing Hua University","ror":"https://ror.org/00zdnkx70","country_code":"TW","type":"education","lineage":["https://openalex.org/I25846049"]}],"countries":["TW"],"is_corresponding":false,"raw_author_name":"Chin-Liang Wang","raw_affiliation_strings":["Institute of Communications Engineering, National Tsing Hua University, Taiwan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Institute of Communications Engineering, National Tsing Hua University, Taiwan","institution_ids":["https://openalex.org/I25846049"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5011665213","display_name":"Hai Lin","orcid":"https://orcid.org/0000-0002-6364-348X"},"institutions":[{"id":"https://openalex.org/I15807432","display_name":"Osaka Prefecture University","ror":"https://ror.org/02cf1je33","country_code":"JP","type":"education","lineage":["https://openalex.org/I15807432"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Hai Lin","raw_affiliation_strings":["Department of Electrical and Information Systems, Osaka Prefecture University, Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Electrical and Information Systems, Osaka Prefecture University, Japan","institution_ids":["https://openalex.org/I15807432"]}]}],"institutions":[],"countries_distinct_count":3,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.3515,"has_fulltext":false,"cited_by_count":12,"citation_normalized_percentile":{"value":0.81278699,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":97},"biblio":{"volume":"1","issue":null,"first_page":"1","last_page":"5"},"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/T11233","display_name":"Advanced Adaptive Filtering Techniques","score":0.9977999925613403,"subfield":{"id":"https://openalex.org/subfields/2206","display_name":"Computational Mechanics"},"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/T12146","display_name":"Power Line Communications and Noise","score":0.9973000288009644,"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/orthogonal-frequency-division-multiplexing","display_name":"Orthogonal frequency-division multiplexing","score":0.8845340013504028},{"id":"https://openalex.org/keywords/cognitive-radio","display_name":"Cognitive radio","score":0.779788613319397},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6830735206604004},{"id":"https://openalex.org/keywords/frequency-offset","display_name":"Frequency offset","score":0.6204952001571655},{"id":"https://openalex.org/keywords/carrier-frequency-offset","display_name":"Carrier frequency offset","score":0.5701649188995361},{"id":"https://openalex.org/keywords/electronic-engineering","display_name":"Electronic engineering","score":0.542923629283905},{"id":"https://openalex.org/keywords/rician-fading","display_name":"Rician fading","score":0.4911591708660126},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.47004786133766174},{"id":"https://openalex.org/keywords/frequency-domain","display_name":"Frequency domain","score":0.42674708366394043},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.36529484391212463},{"id":"https://openalex.org/keywords/channel","display_name":"Channel (broadcasting)","score":0.3214643895626068},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.28265756368637085},{"id":"https://openalex.org/keywords/fading","display_name":"Fading","score":0.23629814386367798},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.2159298062324524}],"concepts":[{"id":"https://openalex.org/C40409654","wikidata":"https://www.wikidata.org/wiki/Q375889","display_name":"Orthogonal frequency-division multiplexing","level":3,"score":0.8845340013504028},{"id":"https://openalex.org/C149946192","wikidata":"https://www.wikidata.org/wiki/Q3235733","display_name":"Cognitive radio","level":3,"score":0.779788613319397},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6830735206604004},{"id":"https://openalex.org/C49319798","wikidata":"https://www.wikidata.org/wiki/Q5502874","display_name":"Frequency offset","level":4,"score":0.6204952001571655},{"id":"https://openalex.org/C2776108382","wikidata":"https://www.wikidata.org/wiki/Q25111451","display_name":"Carrier frequency offset","level":5,"score":0.5701649188995361},{"id":"https://openalex.org/C24326235","wikidata":"https://www.wikidata.org/wiki/Q126095","display_name":"Electronic engineering","level":1,"score":0.542923629283905},{"id":"https://openalex.org/C60472773","wikidata":"https://www.wikidata.org/wiki/Q7331156","display_name":"Rician fading","level":4,"score":0.4911591708660126},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.47004786133766174},{"id":"https://openalex.org/C19118579","wikidata":"https://www.wikidata.org/wiki/Q786423","display_name":"Frequency domain","level":2,"score":0.42674708366394043},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.36529484391212463},{"id":"https://openalex.org/C127162648","wikidata":"https://www.wikidata.org/wiki/Q16858953","display_name":"Channel (broadcasting)","level":2,"score":0.3214643895626068},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.28265756368637085},{"id":"https://openalex.org/C81978471","wikidata":"https://www.wikidata.org/wiki/Q1196572","display_name":"Fading","level":3,"score":0.23629814386367798},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.2159298062324524},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1109/vetecf.2009.5379047","is_oa":false,"landing_page_url":"https://doi.org/10.1109/vetecf.2009.5379047","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2009 IEEE 70th Vehicular Technology Conference Fall","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":12,"referenced_works":["https://openalex.org/W1501351613","https://openalex.org/W1982637280","https://openalex.org/W1991567646","https://openalex.org/W2019454257","https://openalex.org/W2024864662","https://openalex.org/W2045057445","https://openalex.org/W2109608267","https://openalex.org/W2153090463","https://openalex.org/W2155207829","https://openalex.org/W2170270064","https://openalex.org/W2172139273","https://openalex.org/W6682468974"],"related_works":["https://openalex.org/W2181352736","https://openalex.org/W2164367930","https://openalex.org/W4385774821","https://openalex.org/W1965281974","https://openalex.org/W2161400403","https://openalex.org/W24185419","https://openalex.org/W3126424621","https://openalex.org/W2509553561","https://openalex.org/W2183273440","https://openalex.org/W2539608886"],"abstract_inverted_index":{"Sensing":[0],"of":[1,14,27,48,53,61,112,202],"orthogonal":[2],"frequency":[3,127,159],"division":[4],"multiplexing":[5],"(OFDM)":[6],"signals":[7,92,118],"at":[8,75],"low":[9,77,103,180],"signal-to-noise":[10],"ratio":[11],"(SNR)":[12],"is":[13,56,72,86,120,152],"great":[15],"importance":[16],"for":[17,108],"cognitive":[18],"radio":[19],"(CR)":[20],"communications":[21],"due":[22],"to":[23,57,87,100,134,155,167,169],"the":[24,41,59,82,89,101,113,139,143,148,164,200],"wide":[25],"applications":[26],"OFDM":[28,49,65,91,117],"in":[29,64,199],"many":[30],"existing":[31],"and":[32,116,130,158,173,184,196,206],"evolving":[33],"broadband":[34],"wireless":[35],"communications.":[36],"In-band":[37],"pilots,":[38],"multiplexed":[39],"with":[40,93,137,178],"data-carrying":[42],"subcarriers,":[43],"provides":[44],"one":[45],"distinct":[46],"feature":[47],"signals.":[50],"The":[51],"objective":[52],"this":[54,80],"paper":[55],"investigate":[58],"application":[60],"in-band":[62],"pilots":[63],"signal":[66,146],"spectrum":[67],"sensing,":[68],"particularly":[69],"when":[70],"synchronization":[71,111],"not":[73,121],"achievable":[74],"very":[76,153,179],"SNR.":[78],"In":[79],"paper,":[81],"proposed":[83,149,165],"sensing":[84,106,114,140,150,186],"technique":[85,151,166],"match":[88],"received":[90],"a":[94,124],"self-defined":[95],"pilot":[96],"tone":[97],"filter.":[98],"Due":[99],"extremely":[102],"requirement":[104],"on":[105],"SNR":[107],"CR":[109],"applications,":[110],"receiver":[115],"usually":[119],"achievable.":[122],"As":[123],"result,":[125],"carrier":[126],"offset":[128,132,205],"(CFO)":[129],"timing":[131,157,204],"have":[133],"be":[135],"dealt":[136],"during":[138],"process.":[141],"With":[142],"hybrid":[144],"domain":[145],"processing,":[147],"robust":[154],"both":[156],"offset.":[160],"We":[161],"also":[162],"apply":[163],"DVB-T":[168],"verify":[170],"our":[171],"proposal":[172],"subsequent":[174],"analysis.":[175],"Robust":[176],"performance":[177],"false":[181],"alarm":[182],"probability":[183],"short":[185],"time":[187],"were":[188],"achieved":[189],"under":[190],"various":[191],"channel":[192],"conditions":[193],"including":[194],"Rician":[195],"Rayleigh":[197],"channels,":[198],"presence":[201],"random":[203],"CFO.":[207]},"counts_by_year":[{"year":2017,"cited_by_count":2},{"year":2015,"cited_by_count":1},{"year":2014,"cited_by_count":1},{"year":2013,"cited_by_count":3},{"year":2012,"cited_by_count":2}],"updated_date":"2026-07-29T14:22:42.915294","created_date":"2025-10-10T00:00:00"}
