{"id":"https://openalex.org/W2924482941","doi":"https://doi.org/10.1109/icaiic.2019.8669089","title":"Spectrum Database Construction based on HMM and Spectrum Sharing in Multiple Primary Users Environment","display_name":"Spectrum Database Construction based on HMM and Spectrum Sharing in Multiple Primary Users Environment","publication_year":2019,"publication_date":"2019-02-01","ids":{"openalex":"https://openalex.org/W2924482941","doi":"https://doi.org/10.1109/icaiic.2019.8669089","mag":"2924482941"},"language":"en","primary_location":{"id":"doi:10.1109/icaiic.2019.8669089","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icaiic.2019.8669089","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2019 International Conference on Artificial Intelligence in Information and Communication (ICAIIC)","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/A5050050948","display_name":"Yuya Aoki","orcid":null},"institutions":[{"id":"https://openalex.org/I20529979","display_name":"University of Electro-Communications","ror":"https://ror.org/02x73b849","country_code":"JP","type":"education","lineage":["https://openalex.org/I20529979"]}],"countries":["JP"],"is_corresponding":true,"raw_author_name":"Yuya Aoki","raw_affiliation_strings":["Advanced Wireless and Communication research Center (AWCC), The University of Electro-Communications, 1-5-1, Choufugaoka, Chofu, Tokyo, Japan"],"affiliations":[{"raw_affiliation_string":"Advanced Wireless and Communication research Center (AWCC), The University of Electro-Communications, 1-5-1, Choufugaoka, Chofu, Tokyo, Japan","institution_ids":["https://openalex.org/I20529979"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5054932044","display_name":"Takeo Fujii","orcid":"https://orcid.org/0000-0002-7886-5560"},"institutions":[{"id":"https://openalex.org/I20529979","display_name":"University of Electro-Communications","ror":"https://ror.org/02x73b849","country_code":"JP","type":"education","lineage":["https://openalex.org/I20529979"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Takeo Fujii","raw_affiliation_strings":["Advanced Wireless and Communication research Center (AWCC), The University of Electro-Communications, 1-5-1, Choufugaoka, Chofu, Tokyo, Japan"],"affiliations":[{"raw_affiliation_string":"Advanced Wireless and Communication research Center (AWCC), The University of Electro-Communications, 1-5-1, Choufugaoka, Chofu, Tokyo, Japan","institution_ids":["https://openalex.org/I20529979"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5050050948"],"corresponding_institution_ids":["https://openalex.org/I20529979"],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.03059916,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"118","issue":"421","first_page":"200","last_page":"204"},"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":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/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/T10148","display_name":"Advanced MIMO Systems Optimization","score":0.9940000176429749,"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/T10575","display_name":"Wireless Communication Networks Research","score":0.9930999875068665,"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/white-spaces","display_name":"White spaces","score":0.860914409160614},{"id":"https://openalex.org/keywords/hidden-markov-model","display_name":"Hidden Markov model","score":0.8168847560882568},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.7694156169891357},{"id":"https://openalex.org/keywords/reuse","display_name":"Reuse","score":0.6998963952064514},{"id":"https://openalex.org/keywords/enabling","display_name":"Enabling","score":0.5133053660392761},{"id":"https://openalex.org/keywords/spectrum","display_name":"Spectrum (functional analysis)","score":0.4891265034675598},{"id":"https://openalex.org/keywords/cognitive-radio","display_name":"Cognitive radio","score":0.46751290559768677},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.4032822549343109},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.3981388211250305},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.37741294503211975},{"id":"https://openalex.org/keywords/telecommunications","display_name":"Telecommunications","score":0.21715977787971497},{"id":"https://openalex.org/keywords/wireless","display_name":"Wireless","score":0.2112785279750824},{"id":"https://openalex.org/keywords/engineering","display_name":"Engineering","score":0.13559028506278992}],"concepts":[{"id":"https://openalex.org/C96391052","wikidata":"https://www.wikidata.org/wiki/Q256313","display_name":"White spaces","level":4,"score":0.860914409160614},{"id":"https://openalex.org/C23224414","wikidata":"https://www.wikidata.org/wiki/Q176769","display_name":"Hidden Markov model","level":2,"score":0.8168847560882568},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7694156169891357},{"id":"https://openalex.org/C206588197","wikidata":"https://www.wikidata.org/wiki/Q846574","display_name":"Reuse","level":2,"score":0.6998963952064514},{"id":"https://openalex.org/C22607594","wikidata":"https://www.wikidata.org/wiki/Q5375150","display_name":"Enabling","level":2,"score":0.5133053660392761},{"id":"https://openalex.org/C156778621","wikidata":"https://www.wikidata.org/wiki/Q1365748","display_name":"Spectrum (functional analysis)","level":2,"score":0.4891265034675598},{"id":"https://openalex.org/C149946192","wikidata":"https://www.wikidata.org/wiki/Q3235733","display_name":"Cognitive radio","level":3,"score":0.46751290559768677},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.4032822549343109},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.3981388211250305},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.37741294503211975},{"id":"https://openalex.org/C76155785","wikidata":"https://www.wikidata.org/wiki/Q418","display_name":"Telecommunications","level":1,"score":0.21715977787971497},{"id":"https://openalex.org/C555944384","wikidata":"https://www.wikidata.org/wiki/Q249","display_name":"Wireless","level":2,"score":0.2112785279750824},{"id":"https://openalex.org/C127413603","wikidata":"https://www.wikidata.org/wiki/Q11023","display_name":"Engineering","level":0,"score":0.13559028506278992},{"id":"https://openalex.org/C548081761","wikidata":"https://www.wikidata.org/wiki/Q180388","display_name":"Waste management","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/C15744967","wikidata":"https://www.wikidata.org/wiki/Q9418","display_name":"Psychology","level":0,"score":0.0},{"id":"https://openalex.org/C542102704","wikidata":"https://www.wikidata.org/wiki/Q183257","display_name":"Psychotherapist","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}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.1109/icaiic.2019.8669089","is_oa":false,"landing_page_url":"https://doi.org/10.1109/icaiic.2019.8669089","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"2019 International Conference on Artificial Intelligence in Information and Communication (ICAIIC)","raw_type":"proceedings-article"},{"id":"mag:2954277870","is_oa":false,"landing_page_url":"https://www.ieice.org/ken/paper/2019012541jT/eng/","pdf_url":null,"source":{"id":"https://openalex.org/S4306512848","display_name":"IEICE Technical Report; IEICE Tech. Rep.","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":null,"raw_source_name":"IEICE Technical Report; IEICE Tech. Rep.","raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.47999998927116394,"id":"https://metadata.un.org/sdg/9","display_name":"Industry, innovation and infrastructure"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":10,"referenced_works":["https://openalex.org/W2051511531","https://openalex.org/W2071707134","https://openalex.org/W2093540532","https://openalex.org/W2133039196","https://openalex.org/W2147856005","https://openalex.org/W2562190277","https://openalex.org/W2581865685","https://openalex.org/W2789470429","https://openalex.org/W2791994988","https://openalex.org/W2897803399"],"related_works":["https://openalex.org/W1994734174","https://openalex.org/W2229545378","https://openalex.org/W2111066923","https://openalex.org/W2185800257","https://openalex.org/W1971967461","https://openalex.org/W2091417597","https://openalex.org/W2775301649","https://openalex.org/W2048427509","https://openalex.org/W4233632157","https://openalex.org/W2330895226"],"abstract_inverted_index":{"In":[0,30,84],"recent":[1],"years,":[2],"many":[3],"researchers":[4],"focus":[5],"on":[6],"a":[7,44],"measurement-based":[8],"spectrum":[9,20,28,45,70,103],"database":[10],"(SD)":[11],"that":[12],"utilizes":[13],"the":[14,50,65,75,85,113,116],"actual":[15],"received":[16],"power":[17],"obtained":[18],"by":[19,60,79,101],"sensing":[21,71],"as":[22],"an":[23,26,34],"enabler":[24],"for":[25,68],"efficient":[27],"sharing.":[29],"this":[31],"paper,":[32],"in":[33,64,105],"environment":[35,67],"where":[36],"multiple":[37,62],"transmitters":[38],"are":[39],"switched":[40],"ON/OFF,":[41],"we":[42],"propose":[43],"sharing":[46,104],"method":[47],"and":[48,72,94],"verify":[49],"influence":[51],"of":[52,77,115],"error":[53],"at":[54],"SD":[55,57],"construction.":[56],"is":[58,89],"constructed":[59],"placing":[61],"sensors":[63],"radio":[66],"performing":[69],"statistically":[73],"processing":[74],"result":[76],"learning":[78],"Hidden":[80],"Markov":[81],"Model":[82],"(HMM).":[83],"proposed":[86,117],"method,":[87],"it":[88],"possible":[90],"to":[91],"reuse":[92],"temporal":[93],"spatial":[95],"white":[96],"space":[97],"with":[98,107],"high":[99],"efficiency":[100],"using":[102],"cooperation":[106],"SD.":[108],"The":[109],"simulation":[110],"results":[111],"confirm":[112],"effectiveness":[114],"method.":[118]},"counts_by_year":[],"updated_date":"2026-04-04T16:13:02.066488","created_date":"2025-10-10T00:00:00"}