{"created":"2021-03-01T06:00:57.450777+00:00","id":8624,"links":{},"metadata":{"_buckets":{"deposit":"40f2b5a0-2ac0-45f2-a34c-53ab8dfd80ed"},"_deposit":{"id":"8624","owners":[],"pid":{"revision_id":0,"type":"depid","value":"8624"},"status":"published"},"_oai":{"id":"oai:kitami-it.repo.nii.ac.jp:00008624","sets":["10"]},"author_link":["89924","298","220","89925","89926","89927"],"control_number":"8624","item_5_biblio_info_6":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2013-12-12","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"52","bibliographicPageEnd":"142","bibliographicPageStart":"137","bibliographicVolumeNumber":"SIS2013","bibliographic_titles":[{"bibliographic_title":"信学技報 SIS","bibliographic_titleLang":"ja"},{"bibliographic_title":"IEICE Technical Report SIS","bibliographic_titleLang":"en"}]}]},"item_5_description_4":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"本稿では,OFDM方式ベースバンド受信機においてサブキャリア毎の受信SNRに基づいて語長を動的可変制御する手法を提案し,OFDM受信機で用いられるFFTプロセッサの消費電力評価結果を報告する.パケット受信成功回数を基準とした語長選択を行う従来手法では,マルチパスフェージング環境で時間変動する伝搬路に対する語長追従動作が遅いため,通信特性が劣化する問題があった.提案手法では復調可能な最小語長を自動で決定し,サブキャリアSNR最小値情報に基づいて語長選択を行い,追従性の問題を解決している.提案手法の通信特性や消費電力評価を行った結果,提案手法は固定長と同等の通信特性を維持し,QPSK, 16QAM復調において消費電力をそれぞれ32%, 22%削減する成果が得られた.","subitem_description_language":"ja","subitem_description_type":"Abstract"},{"subitem_description":"In this paper, we propose a dynamic variable wordlength control method using subcarrier received SNRs for OFDM baseband receivers and report the results of power consumption evaluation in a FFT processor. The conventional method that performs wordlength selection based on the number of successful packet receptions tends to be slow in wordlength tracking operation and degrade communication performance in time-variable multipath fading environments. The proposed method performs wordlength selection using minimum value information of subcarrier SNRs and solves the problem of tracking operation. In the results of evaluating communication performance and power consumption, the proposed method provided the same communication performance as the use of fixed-wordlength and reduced power consumption by 32% and 22% for QPSK and 16QAM demodulations.","subitem_description_language":"en","subitem_description_type":"Abstract"}]},"item_5_publisher_32":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"電子情報通信学会","subitem_publisher_language":"ja"}]},"item_5_rights_12":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"c2013 by IEICE"}]},"item_5_select_15":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_select_item":"publisher"}]},"item_5_source_id_7":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0913-5685","subitem_source_identifier_type":"PISSN"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"佐々木, 大地","creatorNameLang":"ja"}],"nameIdentifiers":[{"nameIdentifier":"89924","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"吉澤 , 真吾","creatorNameLang":"ja"}],"nameIdentifiers":[{"nameIdentifier":"298","nameIdentifierScheme":"WEKO"},{"nameIdentifier":"20447080","nameIdentifierScheme":"KAKEN - 研究者検索","nameIdentifierURI":"https://nrid.nii.ac.jp/ja/nrid/1000020447080/"}]},{"creatorNames":[{"creatorName":"谷本, 洋","creatorNameLang":"ja"}],"nameIdentifiers":[{"nameIdentifier":"220","nameIdentifierScheme":"WEKO"},{"nameIdentifier":"20322886","nameIdentifierScheme":"KAKEN - 研究者検索","nameIdentifierURI":"https://nrid.nii.ac.jp/ja/nrid/1000020322886/"}]},{"creatorNames":[{"creatorName":"SASAKI, Daichi","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"89925","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"YOSHIZAWA, Shingo","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"89926","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"TANIMOTO, Hiroshi","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"89927","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2018-02-16"}],"displaytype":"detail","filename":"SIS2013-52.pdf","filesize":[{"value":"1.4 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"SIS2013-52","url":"https://kitami-it.repo.nii.ac.jp/record/8624/files/SIS2013-52.pdf"},"version_id":"710b95e1-fdcc-4384-932f-b7488c818ecf"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"可変語長","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"低消費電力","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"OFDM","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Variable Wordlength","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Low Power","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"keyword/OFDM","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"conference paper","resourceuri":"http://purl.org/coar/resource_type/c_5794"}]},"item_title":"自律学習による可変語長制御OFDM受信機の低消費電力化 (スマートインフォメディアシステム)","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"自律学習による可変語長制御OFDM受信機の低消費電力化 (スマートインフォメディアシステム)","subitem_title_language":"ja"},{"subitem_title":"A Low Power Variable Wordlength Control OFDM Receiver Based on Autonomy Learning","subitem_title_language":"en"}]},"item_type_id":"5","owner":"1","path":["10"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2018-02-16"},"publish_date":"2018-02-16","publish_status":"0","recid":"8624","relation_version_is_last":true,"title":["自律学習による可変語長制御OFDM受信機の低消費電力化 (スマートインフォメディアシステム)"],"weko_creator_id":"1","weko_shared_id":3},"updated":"2022-12-13T02:23:53.796922+00:00"}