{"id":"https://openalex.org/W4400771441","doi":"https://doi.org/10.23919/transcom.2023ebp3217","title":"Strategies for DOA-DNN Estimation Accuracy Improvement at Low and High SNRs","display_name":"Strategies for DOA-DNN Estimation Accuracy Improvement at Low and High SNRs","publication_year":2024,"publication_date":"2024-07-18","ids":{"openalex":"https://openalex.org/W4400771441","doi":"https://doi.org/10.23919/transcom.2023ebp3217"},"language":"en","primary_location":{"id":"doi:10.23919/transcom.2023ebp3217","is_oa":false,"landing_page_url":"https://doi.org/10.23919/transcom.2023ebp3217","pdf_url":null,"source":{"id":"https://openalex.org/S2493627025","display_name":"IEICE Transactions on Communications","issn_l":"0916-8516","issn":["0916-8516","1745-1345"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4320800604","host_organization_name":"Institute of Electronics, Information and Communication Engineers","host_organization_lineage":["https://openalex.org/P4320800604"],"host_organization_lineage_names":["Institute of Electronics, Information and Communication Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEICE Transactions on Communications","raw_type":"journal-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/A5019551315","display_name":"Daniel Akira Ando","orcid":null},"institutions":[{"id":"https://openalex.org/I104234503","display_name":"Hokkaido University of Science","ror":"https://ror.org/05gqsa340","country_code":"JP","type":"education","lineage":["https://openalex.org/I104234503"]},{"id":"https://openalex.org/I205349734","display_name":"Hokkaido University","ror":"https://ror.org/02e16g702","country_code":"JP","type":"education","lineage":["https://openalex.org/I205349734"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Daniel Akira Ando","raw_affiliation_strings":["Graduate School/Faculty of Information Science &#x0026; Technology, Hokkaido University,Sapporo-shi,Japan,060-0814","Graduate School/Faculty of Information Science &#x0026; Technology, Hokkaido University, Sapporo, 0600814 Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Graduate School/Faculty of Information Science &#x0026; Technology, Hokkaido University,Sapporo-shi,Japan,060-0814","institution_ids":["https://openalex.org/I205349734","https://openalex.org/I104234503"]},{"raw_affiliation_string":"Graduate School/Faculty of Information Science &#x0026; Technology, Hokkaido University, Sapporo, 0600814 Japan","institution_ids":["https://openalex.org/I205349734"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5058947969","display_name":"Toshihiko Nishimura","orcid":"https://orcid.org/0000-0002-4759-2483"},"institutions":[{"id":"https://openalex.org/I104234503","display_name":"Hokkaido University of Science","ror":"https://ror.org/05gqsa340","country_code":"JP","type":"education","lineage":["https://openalex.org/I104234503"]},{"id":"https://openalex.org/I205349734","display_name":"Hokkaido University","ror":"https://ror.org/02e16g702","country_code":"JP","type":"education","lineage":["https://openalex.org/I205349734"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Toshihiko Nishimura","raw_affiliation_strings":["Graduate School/Faculty of Information Science &#x0026; Technology, Hokkaido University,Sapporo-shi,Japan,060-0814","Graduate School/Faculty of Information Science &#x0026; Technology, Hokkaido University, Sapporo, 0600814 Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Graduate School/Faculty of Information Science &#x0026; Technology, Hokkaido University,Sapporo-shi,Japan,060-0814","institution_ids":["https://openalex.org/I205349734","https://openalex.org/I104234503"]},{"raw_affiliation_string":"Graduate School/Faculty of Information Science &#x0026; Technology, Hokkaido University, Sapporo, 0600814 Japan","institution_ids":["https://openalex.org/I205349734"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5045532627","display_name":"Takanori Sato","orcid":"https://orcid.org/0000-0001-8460-6162"},"institutions":[{"id":"https://openalex.org/I104234503","display_name":"Hokkaido University of Science","ror":"https://ror.org/05gqsa340","country_code":"JP","type":"education","lineage":["https://openalex.org/I104234503"]},{"id":"https://openalex.org/I205349734","display_name":"Hokkaido University","ror":"https://ror.org/02e16g702","country_code":"JP","type":"education","lineage":["https://openalex.org/I205349734"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Takanori Sato","raw_affiliation_strings":["Graduate School/Faculty of Information Science &#x0026; Technology, Hokkaido University,Sapporo-shi,Japan,060-0814","Graduate School/Faculty of Information Science &#x0026; Technology, Hokkaido University, Sapporo, 0600814 Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Graduate School/Faculty of Information Science &#x0026; Technology, Hokkaido University,Sapporo-shi,Japan,060-0814","institution_ids":["https://openalex.org/I205349734","https://openalex.org/I104234503"]},{"raw_affiliation_string":"Graduate School/Faculty of Information Science &#x0026; Technology, Hokkaido University, Sapporo, 0600814 Japan","institution_ids":["https://openalex.org/I205349734"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5064930134","display_name":"Takeo Ohgane","orcid":null},"institutions":[{"id":"https://openalex.org/I104234503","display_name":"Hokkaido University of Science","ror":"https://ror.org/05gqsa340","country_code":"JP","type":"education","lineage":["https://openalex.org/I104234503"]},{"id":"https://openalex.org/I205349734","display_name":"Hokkaido University","ror":"https://ror.org/02e16g702","country_code":"JP","type":"education","lineage":["https://openalex.org/I205349734"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Takeo Ohgane","raw_affiliation_strings":["Graduate School/Faculty of Information Science &#x0026; Technology, Hokkaido University,Sapporo-shi,Japan,060-0814","Graduate School/Faculty of Information Science &#x0026; Technology, Hokkaido University, Sapporo, 0600814 Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Graduate School/Faculty of Information Science &#x0026; Technology, Hokkaido University,Sapporo-shi,Japan,060-0814","institution_ids":["https://openalex.org/I205349734","https://openalex.org/I104234503"]},{"raw_affiliation_string":"Graduate School/Faculty of Information Science &#x0026; Technology, Hokkaido University, Sapporo, 0600814 Japan","institution_ids":["https://openalex.org/I205349734"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5102847414","display_name":"Yasutaka Ogawa","orcid":"https://orcid.org/0000-0002-9835-9948"},"institutions":[{"id":"https://openalex.org/I104234503","display_name":"Hokkaido University of Science","ror":"https://ror.org/05gqsa340","country_code":"JP","type":"education","lineage":["https://openalex.org/I104234503"]},{"id":"https://openalex.org/I205349734","display_name":"Hokkaido University","ror":"https://ror.org/02e16g702","country_code":"JP","type":"education","lineage":["https://openalex.org/I205349734"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Yasutaka Ogawa","raw_affiliation_strings":["Graduate School/Faculty of Information Science &#x0026; Technology, Hokkaido University,Sapporo-shi,Japan,060-0814","Graduate School/Faculty of Information Science &#x0026; Technology, Hokkaido University, Sapporo, 0600814 Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Graduate School/Faculty of Information Science &#x0026; Technology, Hokkaido University,Sapporo-shi,Japan,060-0814","institution_ids":["https://openalex.org/I205349734","https://openalex.org/I104234503"]},{"raw_affiliation_string":"Graduate School/Faculty of Information Science &#x0026; Technology, Hokkaido University, Sapporo, 0600814 Japan","institution_ids":["https://openalex.org/I205349734"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5112392077","display_name":"Junichiro Hagiwara","orcid":null},"institutions":[{"id":"https://openalex.org/I112821123","display_name":"Mukogawa Women's University","ror":"https://ror.org/009x65438","country_code":"JP","type":"education","lineage":["https://openalex.org/I112821123"]}],"countries":["JP"],"is_corresponding":false,"raw_author_name":"Junichiro Hagiwara","raw_affiliation_strings":["Mukogawa Women&#x0027;s University,Faculty of Social Informatics,Nishinomiya-shi,Japan,663-8137","Faculty of Social Informatics, Mukogawa Women's University, Nishinomiya, 663-8137 Japan"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Mukogawa Women&#x0027;s University,Faculty of Social Informatics,Nishinomiya-shi,Japan,663-8137","institution_ids":["https://openalex.org/I112821123"]},{"raw_affiliation_string":"Faculty of Social Informatics, Mukogawa Women's University, Nishinomiya, 663-8137 Japan","institution_ids":["https://openalex.org/I112821123"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":6,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.3055,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.62696216,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":91,"max":95},"biblio":{"volume":"E108-B","issue":"1","first_page":"94","last_page":"108"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10711","display_name":"Target Tracking and Data Fusion in Sensor Networks","score":0.9674999713897705,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"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/T10711","display_name":"Target Tracking and Data Fusion in Sensor Networks","score":0.9674999713897705,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"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/T10876","display_name":"Fault Detection and Control Systems","score":0.92330002784729,"subfield":{"id":"https://openalex.org/subfields/2207","display_name":"Control and Systems 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/T11609","display_name":"Geophysical Methods and Applications","score":0.920199990272522,"subfield":{"id":"https://openalex.org/subfields/2212","display_name":"Ocean 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/computer-science","display_name":"Computer science","score":0.9214827418327332},{"id":"https://openalex.org/keywords/estimation","display_name":"Estimation","score":0.5945243835449219},{"id":"https://openalex.org/keywords/speech-recognition","display_name":"Speech recognition","score":0.4671463668346405},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.3951556086540222},{"id":"https://openalex.org/keywords/pattern-recognition","display_name":"Pattern recognition (psychology)","score":0.33743059635162354},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.33344218134880066}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.9214827418327332},{"id":"https://openalex.org/C96250715","wikidata":"https://www.wikidata.org/wiki/Q965330","display_name":"Estimation","level":2,"score":0.5945243835449219},{"id":"https://openalex.org/C28490314","wikidata":"https://www.wikidata.org/wiki/Q189436","display_name":"Speech recognition","level":1,"score":0.4671463668346405},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.3951556086540222},{"id":"https://openalex.org/C153180895","wikidata":"https://www.wikidata.org/wiki/Q7148389","display_name":"Pattern recognition (psychology)","level":2,"score":0.33743059635162354},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.33344218134880066},{"id":"https://openalex.org/C187736073","wikidata":"https://www.wikidata.org/wiki/Q2920921","display_name":"Management","level":1,"score":0.0},{"id":"https://openalex.org/C162324750","wikidata":"https://www.wikidata.org/wiki/Q8134","display_name":"Economics","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.23919/transcom.2023ebp3217","is_oa":false,"landing_page_url":"https://doi.org/10.23919/transcom.2023ebp3217","pdf_url":null,"source":{"id":"https://openalex.org/S2493627025","display_name":"IEICE Transactions on Communications","issn_l":"0916-8516","issn":["0916-8516","1745-1345"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4320800604","host_organization_name":"Institute of Electronics, Information and Communication Engineers","host_organization_lineage":["https://openalex.org/P4320800604"],"host_organization_lineage_names":["Institute of Electronics, Information and Communication Engineers"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"IEICE Transactions on Communications","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G4004336745","display_name":null,"funder_award_id":"23H01406","funder_id":"https://openalex.org/F4320334764","funder_display_name":"Japan Society for the Promotion of Science"}],"funders":[{"id":"https://openalex.org/F4320334764","display_name":"Japan Society for the Promotion of Science","ror":"https://ror.org/00hhkn466"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":19,"referenced_works":["https://openalex.org/W1501676610","https://openalex.org/W2113638573","https://openalex.org/W2136172079","https://openalex.org/W2146610201","https://openalex.org/W2734408173","https://openalex.org/W2810871807","https://openalex.org/W2897361856","https://openalex.org/W2900011057","https://openalex.org/W2973265422","https://openalex.org/W3017927858","https://openalex.org/W3045520156","https://openalex.org/W3046051215","https://openalex.org/W3159296164","https://openalex.org/W3215357490","https://openalex.org/W4200194059","https://openalex.org/W4317642784","https://openalex.org/W4386585508","https://openalex.org/W4390551947","https://openalex.org/W6675354045"],"related_works":["https://openalex.org/W2051487156","https://openalex.org/W2073681303","https://openalex.org/W2053286651","https://openalex.org/W2181743346","https://openalex.org/W2187401768","https://openalex.org/W2181413294","https://openalex.org/W2989452537","https://openalex.org/W2052122378","https://openalex.org/W2033914206","https://openalex.org/W2042327336"],"abstract_inverted_index":{"Implementation":[0],"of":[1,16,57,73,94,109,130,236,251,262,269,272],"several":[2,180],"wireless":[3],"applications":[4],"such":[5,165,201],"as":[6],"radar":[7],"systems":[8],"and":[9,81,107,241],"source":[10],"localization":[11],"is":[12,61,124,148,156,176,229,253,274],"possible":[13],"with":[14,111,145,186,219],"direction":[15],"arrival":[17],"(DOA)":[18],"estimation,":[19],"an":[20],"array":[21],"signal":[22,50],"processing":[23],"technique.":[24],"In":[25,86,255],"the":[26,46,55,71,92,137,151,154,224,234,249,260,267],"past,":[27],"we":[28,97,211],"proposed":[29,75,215,264],"a":[30,125,142,177,194],"DOA":[31,119,171,188],"estimation":[32,120,172,217],"method":[33,106],"using":[34],"deep":[35],"neural":[36],"networks":[37],"(DNNs),":[38],"which":[39,117,159,169,220],"presented":[40],"very":[41],"good":[42],"performance":[43,72,163,261],"compared":[44],"to":[45,161,192,206],"traditional":[47],"root":[48],"multiple":[49],"classification":[51],"(root-MUSIC)":[52],"algorithm":[53],"when":[54,248],"number":[56,250,271],"radio":[58,66,184],"wave":[59,67],"sources":[60,68,252,273],"two.":[62],"However,":[63],"once":[64],"three":[65,95],"are":[69,189],"considered,":[70],"that":[74,127,150],"DNN":[76,138],"decays":[77],"especially":[78],"at":[79,121,164,173],"low":[80,122],"high":[82,174],"signal-to-noise":[83],"ratios":[84],"(SNRs).":[85],"this":[87],"paper,":[88],"mainly":[89],"focusing":[90],"on":[91,103,259],"case":[93,268],"sources,":[96],"present":[98],"two":[99,225],"additional":[100],"strategies":[101],"based":[102],"our":[104,213,237,242],"previous":[105,243],"capable":[108],"dealing":[110],"each":[112],"SNR":[113,216],"region.":[114],"The":[115,167],"first,":[116],"supports":[118,170],"SNRs,":[123,175],"scheme":[126,178],"makes":[128],"use":[129,212],"principal":[131],"component":[132],"analysis":[133],"(PCA).":[134],"By":[135],"representing":[136],"input":[139],"data":[140,155],"in":[141,183,200,204],"lower":[143],"dimension":[144],"PCA,":[146],"it":[147],"believed":[149],"noise":[152],"corrupting":[153],"greatly":[157],"reduced,":[158],"leads":[160],"improved":[162],"SNRs.":[166],"second,":[168],"where":[179],"DNNs":[181],"specialized":[182],"waves":[185],"close":[187],"accordingly":[190],"selected":[191],"produce":[193],"more":[195],"reliable":[196],"angular":[197],"spectrum":[198],"grid":[199],"circumstances.":[202],"Finally,":[203],"order":[205],"merge":[207],"both":[208],"ideas":[209],"together,":[210],"previously":[214],"technique,":[218],"appropriate":[221],"selection":[222],"between":[223],"schemes":[226],"mentioned":[227],"above":[228],"performed.":[230],"We":[231],"have":[232],"verified":[233],"superiority":[235],"methods":[238,265],"over":[239],"root-MUSIC":[240],"technique":[244],"through":[245],"computer":[246],"simulation":[247],"three.":[254],"addition,":[256],"brief":[257],"discussion":[258],"these":[263],"for":[266],"higher":[270],"also":[275],"given.":[276]},"counts_by_year":[{"year":2025,"cited_by_count":1}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}
