Tokushima University / Educator and Researcher Directory --- Oie, Takahiro

Personal Web Page

http://cms.db.tokushima-u.ac.jp/DAV/person/S10729/

https://researchmap.jp/TakahiroOie (researchmap)

https://orcid.org/0000-0003-1168-8421 (ORCID)

Field of Study

○	Communication Engineering
○	Telecommunication Engineering

Subject of Study

○	Spead Spectrum Communication, Frequency Synthesizer, Ultra Wideband (communication, frequency hopped spread spectrum communication, code division multiple access, synchronization, frequency synthesizer, ultra wideband)
○	Management of Computer Networks, Construction of Database on Computer Network (computer networks, database, internet, network management)

Book / Paper

Academic Paper (Judged Full Paper):

1.	Takayuki Kimura and Takahiro Oie : Fractional-`N` Type PLL Frequency Synthesizer with Improved Frequency Convergence Speed and Resolution, Journal of Signal Processing, Vol.13, No.4, 319-322, 2009. (Keyword) Synthesizer / Fractional / High speed convergence (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1520573330215359360 (CiNii: 1520573330215359360)
2.	Kazuhide Kanenishi, Kenji Matsuura, Takahiro Oie, Masahiko Sano, Kenji Kita and Yoneo Yano : Design Issue and Operation Method of the University Information Portal Based on the Existing Web Based System, Academic Information Processing Environment Research, Vol.12, 34-42, 2009. (Summary) 現在，高等教育機関において，学内の情報化を推進するため大学ポータルの導入が進んでいる．本稿では，大学ポータルのモデルを提案する．大学ポータルとは，単一のWEBベースのシステムではなく，分散するデータベースやWEBシステムが統合したシステムであり，学内情報の基盤となるフレームワークのことである．徳島大学の大学ポータルを事例として，大学ポータルの構築，運用に関する問題を具体的に考察する．運用の様子を示し，考察をおこなう．最後に，大学ポータルの課題について考察する． (Keyword) Single Signe On / single signe on / Authentication infrastructure / authentication infrastructure / Federation / federation / Authorization / authorization / WEB Service / web service / 認証基盤 / ニンショウキバン / 連携 / レンケイ / 認可 / ニンカ / WEB サービス / web サービス (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1521136281064684160 (CiNii: 1521136281064684160)
3.	Kenji Maegawa, Takahiro Oie and Tadamitsu Iritani : Proposal for Rapid Acquisition Method Using PSD Matching for UWB-IR (TH-FH/SS) Multiple Access, Journal of Signal Processing, Vol.10, No.4, 251-254, 2006. (Summary) Recently, data communications, e.g., animation and applications, hae demanded higher transmission speeds in the field of radio communication. To satisfy this demand, UWB-IR (ultra wide-band impulse radio) has been researched. In this communication, synchronous acquisition is neccesary to demodulate data, and sliding correlation is proposed as a basic method, but it takes a long time to resach the synchronous stage. In this research, we propose a new synchronous acquisition method that is able to greatly shorten synchronous acquisition time. In the proposed method, we divide the acquisition process in to two stages. The first stage is for finding candidate phases using power spectrum density (PSD) matching. The second stage is to acquire the phase precisely for all candidate phases using correlation. In this study, we propose a new synchronous acquisition method for UWB-IR. The proposed mehtod can signifidcantly shorten synchronous acquisition time. (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1520010381073161344 (CiNii: 1520010381073161344)
4.	Yasuo Miyoshi, Takahiro Oie, Tetsushi Ueta, Masanori Hirotomo, Yoneo Yano and Hiroshi Kawakami : Construction of e-Syllabus Supporting the Discovery of Learning Path by Using EDB, Journal of University Education Research, No.3, 1-9, 2006. (Summary) In Tokushima University, the syllabus has been published and opened on the web using an Educator and Researcher Information Database (EDB). We are now developing an e-Syllabus system that represents graphically and dynamically the relationships between lectures. This development represents one of the improvements of infrastructure for education and learning. In order to construct the e-Syllabus, three new columns have been added to each lecture of the syllabus: keywords, preceding lectures and relational lectures. XML is used as a storage format for EDB; it allows us to represent the structured data within on a text file that can be stored on a CD-ROM. Thus, without accessing the web, it is possible to represent graphically and discover the relations between the lectures. This representation of the syllabus supports the students in the discovery of learning-paths and the definition of learning plan. Thus, the e-Syllabus system improves the convenience of using the syllabus. (Keyword) Learning Path / Syllabus / Lecture Outline / EDB / XML (Tokushima University Institutional Repository) ● Metadata: 82383 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1050020697878043392 (Tokushima University Institutional Repository: 82383, CiNii: 1050020697878043392)
5.	Masaki Hashizume, 田坂英司, Hiroyuki Yotsuyanagi, Takeomi Tamesada, 茅原敏広, Ikuro Morita and Takahiro Oie : CMOSマイクロコンピュータ回路の電源電流によるブリッジ故障検出法, Journal of Japan Institute of Electronics Packaging, Vol.6, No.7, 564-572, 2003. (Summary) A new supply current test method is proposed for bridging faults in CMOS microprocessor based circuits which are implemented circuit boards with discrete ICs. The method is based on supply current of a circuit under test, which flows when a test program is executed. A commercial microcomputer circuit is tested by the proposed method. In the tests, 98.7% of the bridging faults between two neighboring pins in the circuit are detected within 326 msec. It promises us that the method can be used in production tests of microprocessor based circuits. Also, it is sown that the test program can be developed by means of timing charts in data sheets of the microprocessor. (Keyword) Bridging Fault / Microcomputer / Supply Current Testing (Link to Publication Site) ● Publication site (DOI): 10.5104/jiep.6.564 (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1520290884709986560 ● Search Scopus @ Elsevier (DOI): 10.5104/jiep.6.564 (DOI: 10.5104/jiep.6.564, CiNii: 1520290884709986560)
6.	Takahiro Oie, Tetsushi Ueta, Youji Ochi and Yoneo Yano : Education and research database in Tokushima University, --- Development and operation of the database orienting periodical publication and information disclosure ---, The Journal of University Evaluation of National Institution for Academic Degrees and University Evaluation, Research in University Evaluation, Vol.3, 31-50, 2003. (Summary) 大学機関では，紀要や各種総覧，シラバスなどの定期刊行物や，大学評価，外部評価，自己点検評価など，多くの報告書が編集され出版されている．これら出版物を制作するためのデータは，例えば学歴，職歴のように職員個人にとっては不変の情報であったり，著作リストのように既存のデータを追加するだけで済む情報である．しかし，個人のデータの記録書式や，編集者のデータ収集方法を統一することは困難であり，よって，出版物ごとにデータの再入力が強いられ，結果，編集・校正に長い期間を要し，データ入力者のみならず編集者にとっても多大な負担となる．そこで本学では，上記出版物の網羅すべき項目を洗いだし，「情報の再利用」を設計思想として，ユーザの入力と出版物の編集作業の援用を指向した教職員データベースシステム(EDB; Education and research database)を構築した．EDBは当初，徳島大学工学部においてのみ運用されていたが，大学評価や自己点検評価の資料を含む多くの出版物編集に利用された．その実績を受け，現在では全学レベルの運用に引き上げられている．本稿では，このEDBのコンセプトや提供される機能について述べ，入力から出版までの流れ，既出版物の概要，今後の展望について解説する．また，運用までの経緯や問題点について述べる． (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1050845762563877248 (CiNii: 1050845762563877248)
7.	Eiji Okada, Takahiro Oie and Tadamitsu Iritani : High Frequency Resolution 2.4GHz band Rapid Frequency Changes Synthesizer, The Transactions of the Institute of Electronics, Information and Communication Engineers B, Vol.J83-B, No.10, 1394-1402, 2000. (Summary) 高速周波数ホッピングスペクトル拡散通信(FFH-SS)には，高速に周波数を切り替えることのできる周波数シンセサイザが必要不可欠である．そこで筆者らは，位相差の差分を利用することにより出力周波数の切り替える新しい方式の高速ホッピング周波数シンセサイザをさきに提案し，周波数切換時に発生するVCOの位相ずれの影響を受けず，ホッピングレートをリファレンス周波数の1/2まで上げられることを示した．しかし，この周波数シンセサイザでは，出力周波数の分解能を細かくすると，実現可能なホッピングレートの上限が分解能に反比例して低くなるという欠点があった．本論文では，ホッピングレートを維持しつつ出力周波数分解能を細かくすることが可能なGHz帯の周波数シンセサイザを提案する．本方式では，位相比較器の出力値からその間の非整数分周比に対応する値を補間し，これを位相差としてシンセサイザの出力を収束させる． (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1520572358401444480 (CiNii: 1520572358401444480)
8.	Masakatu Morii, Yoshiaki Shiraishi, Naoto Sone, Ken-ichi Iwata, Chikara Ohta and Takahiro Oie : A Packet Distribution Experiment of Still and Moving Images over the Internet, --- The Project of Awadance Internet Live '96 and '97 ---, The Journal of the Institute of Image Electronics Engineers of Japan, Vol.27, No.3, 253-262, 1998. (Summary) We make an experiment in packets transmission of still and moving images over the Internet. We uuse StreamWorks developed by Xing Technology for transmission moving images. And for uusers which do not watch by it, we develop a SnapShot system on WWW, that is not restricted in time. Moreover, Internet Service Providers (ISPs) propagate StreamWorks packets and mirror http packets that are sent from the key statio. the university of Tokushima. We establish temporary lines between ISPs and the key station. The University of Tokushima, so that many user watch more comfortable than generally live broadcasting. In this paper, we report the project, the systems, and its result.
9.	Takahiro Oie : Supporting Administration of Internet Provider with Membership Organization Information Database, Bulletin of Faculty of Engineering, The University of Tokushima, Vol.43, 89-100, 1998. (Summary) In recent years, the intermediation of the Internet service provider (ISP) is required in order that ordinary organizations connect their network to the Internet. ISP provides not only the network connection for its member, but also the technical configuration with other ISP, the registeration about its members to upper level Interet administration system and the supporting the administration of members' networks. These are very important to preserving the Internet environment. So the miss-configuring induces fatal troubles on the wide-area-network, the ISP must have the exact information about its members' network and configure the network facilities (router, name-server and the others) with those information. In this paper, we have been constructed the system for supporting administration of ISP. This system is characterized by 1) management of membership organization information with database, 2) check out miss-configuring and conflicting, 3) automatic generation of the information for registering and configuring. Since 1995, we have applied this system to Osaka Regional Information and Open Network Systems, which is one of academic ISP.
10.	Takahiro Oie, Tadamitsu Iritani and Masashi Nanbu : Fast Hopping Frequency Synthesizer using Difference of Phase-errors, The Transactions of the Institute of Electronics, Information and Communication Engineers B, Vol.J81-B-II, No.2, 125-133, 1998. (Summary) 高速周波数ホッピングスペクトル拡散(Fast Frequency Hopped-Spread Spectrum: FFH-SS)通信は耐干渉性，耐妨害性，秘話性に優れた通信方式である．これを実現するためには高速に周波数を切り替え可能なシンセサイザが不可欠である．そこで初期値提示方式を用いた高速ホッピングPLLシンセサイザを先に提案したが，高周波で位相ずれ補償等の課題があった．本論文では，上記の問題点を解決したゼロ位相差で出力周波数を変更する高速ホッピングPLLシンセサイザを提案する．これはVCOの位相ずれ誤差がなく，ホッピング周波数がリファレンス周波数の1/2とより高速に動作可能である．また，A/D変換器のビット数をD/A変換器のビット数よりも少なくできるなどの特徴がある．
11.	Takahiro Oie : Automatic Name-server Configuration by Network Information Database, Bulletin of Faculty of Engineering, The University of Tokushima, Vol.42, 81-92, 1997. (Summary) Recently, a lot of organization have been connected their network to Internet. In order to use the resources of Internet, it is necessary to administrate the domain name system (DNS) about own network. The DNS serves the information about hosts, domain and IP-networks to outer network. There are important information, such as mail delivery routing information. But, DNS configuring needs the expert knowledges, and the miss-configuring maybe induce fatal troubles on the network. In this paper, we have been constructed the system for automatic configuring DNS. This system is characterized by 1) registering information by hosts' administrator, 2) check out miss-configuring and conflicting, 3) automatic generating the configuration files for DNS from information registered in database. And we applied this system to the Campus Information Network of the University of Tokushima.
12.	Takahiro Oie, Tadamitsu Iritani and Hiroshi Kawakami : Response of PLL Demodulator by Two Sinusoidal Inputs, IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol.E 77-A, No.11, 1771-1776, 1994. (Summary) 本論文では周波数ホッピングスペクトル拡散(FH-SS)通信において周波数シフトキーキング(FSK)変調された信号をPLL (Phase Locked Loop)によって復調する場合を想定し，目的局信号以外に干渉信号が受信信号に混入する状況における復調性能を調べるため，2つの正弦波が入力されたときのPLLの応答を調べた．まず，2つの正弦波が入力されたときのPLLの同期ダイアグラムを作成し，目的局のFSK変調指数を変化させたときの干渉信号による同期外れの影響を調べた．その結果，目的局のFSK変調指数を十分に小さくしたとしても許容できる目的-干渉信号比の大きさには限界があることを示した．
13.	Tadamitsu Iritani, Junzo Kuge and Takahiro Oie : Fast Convergence PLL Syntesizer with Initial Phase Difference, The Transactions of the Institute of Electronics, Information and Communication Engineers B-II, Vol.J77-B-II, No.7, 367-375, 1994. (Summary) 周波数ホッピングスペクトル拡散通信への応用を想定し，周波数切替え時間の短いPLLシンセサイザを提案した．提案シンセサイザでは，周波数切替え時にPLLに初期値を与えることによりPLL特有の周波数収束の時間遅れを解消した．更に，周波数切替え時に発生するPLL位相ずれについても補償を行なった．結果として，周波数切替え時間を100ns以下にし，また周波数切替え頻度をPLLの基本周波数の1/3まで上げることに成功した． (Keyword) PLL / シンセサイザ / スペクトル拡散 / 符号分割多重通信 / 周波数ホッピング (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1520853835205291776 (CiNii: 1520853835205291776)
14.	Takahiro Oie and Shunsuke Sato : Adaptive Laplacian Gaussian Filter Method for Edge Detection and Diameter Estimation of Coronary Arteries on Cineangiogram, --- Application to Phantom Profiles ---, The Transactions of the Institute of Electronics, Information and Communication Engineers D-II, Vol.J74-D-II, No.7, 966-974, 1990. (Summary) 最近，冠動脈狭窄(きょうさく)の定量的な診断を目的として，冠動脈造影像から血管の径や断面積の計測が試みられている．しかし，血管径の計測や血管断面積の計測の手掛かりとなる血管像の辺縁抽出のための，精度の点で十分に満足できる方法はまだ確立されていない．本稿では，血管像の辺縁抽出を正確に行なうために，ゼロ交差法を改良した適応型2次微分ガウシアンフィルタ法を提案する．本方法によれば，血管径の変化に対して血管像の形状が相似的に変化するときには，径に応じた位置に辺縁が抽出される．また，撮影系にぼけが存在するときには血管像は相似形を保たないが，ぼけがガウス関数で表されるときには径推定が可能であることが示される．ファントム実験により撮影系のぼけを測定した結果，ぼけは2つのガウス関数の荷重和で表されるが，この場合にも本方法により血管像の辺縁をほぼ正確に抽出できるばかりでなく，血管径をも精度良く推定できることが示される．
15.	Takahiro Oie, Shunsuke Sato, Chikao Uyama, Tetsuo Sugahara and Yoshio Yanagihara : Extraction of Coronary Arteries on Cineangiograms Using an Adaptive Tracing Method, The Transactions of the Institute of Electronics, Information and Communication Engineers D-II, Vol.J73-D-II, No.7, 1084-1091, 1990. (Summary) 冠動脈狭窄病変の診断は心臓血管X線映画撮影法によって撮影した映画像を読映する事により行われている．他方，臨床研究の立場から冠動脈造影像を対象とした定量測定の要望が高まってきた．本論文では，画像処理による狭窄率推定の際に必要となる冠動脈の位置情報を自動的に抽出することを試みた．この方法として，血管像の濃度最大値をたどることで血管を抽出し，また，複数の血管枝の抽出が可能な血管追跡法を提案した．本方法の適用においては，狭窄のある冠動脈の造影画像を計算機に入力し，この画像に背景処理を施した画像(以下，背景処理画像)を対象とした．背景処理は，原画像濃度から方向性のある局所濃度平均値を差し引くことで行う．背景処理の結果，造影画像中の細い血管や狭窄などの血管像と背景との濃度差が小さい部分のコントラストを強調できることがわかった．また，この背景処理画像に本血管追跡法を適用した結果，冠動脈に強度の狭窄がある場合でも主要な血管を全て抽出可能であったことから，本方法の有効性が確かめられた．

Academic Paper (Unrefereed Paper):

1.	Ken'ichi Fujimoto, Tetsuya Yoshinaga, Takahiro Oie and Yasuo Miyoshi : EDB/CMSと汎用LMSを用いたe-ラーニングシステムの構築, 大学教育研究ジャーナル(別冊), No.3, 43-44, 2006.

Proceeding of International Conference:

1.	Yu Yamasumi and Takahiro Oie : Fractional N Frequency Synthesizer Using Accumulator-type Frequency Detector, Proc. of NCSP'12, 651-654, Honolulu, Mar. 2012. (Keyword) frecuency synthesizer / fractional ratio / accumulator-type frequency detector
2.	Tetsuya Hikida and Takahiro Oie : Consideration of channel capacity guaranteed on MIMO communication with array antenna placed on spherical surface, Proc. of NCSP'12, 579-582, Honolulu, Mar. 2012. (Keyword) MIMO / channel capacity / array antenna
3.	Yoshiro Yamaguchi and Takahiro Oie : Designing UWB-IR Pulse by Convolving in Window Function and Sinc Function, Proc. of NCSP'09, 691-694, Honolulu, Mar. 2009. (Keyword) UWB-IR / Basic Pulse / Window Function
4.	Takayuki Kimura and Takahiro Oie : Convergence Speed of Fractional-`N` PLL Frequency Synthesizer Improving with Frequency High Speed Convergence and High Resolution, Proc. of NCSP'09, 645-648, Honolulu, Mar. 2009. (Keyword) Synthesizer / Fractional / High speed convergence
5.	Takayuki Ishikawa and Takahiro Oie : Design of Pulse Shape for UWB-IR by Combining Modulated Gaussian Pulses, Proc. of NCSP'08, 399-402, Gold Coast, Mar. 2008. (Keyword) UWB-IR / Pulse shape / Spectrum Mask
6.	Takayuki Kimura, Takahiro Oie and Keishiro Nakahigashi : Prototype of Fractional-`N` PLL Frequency Synthesizer with High Speed Convergence, Proc. of NCSP'08, 363-366, Gold Coast, Mar. 2008. (Keyword) Synthesizer / Fractional / High speed
7.	Kenji Maegawa, Takahiro Oie and Tadamitsu Iritani : Improvement of Rapid Acquisition Method using PSD Matching for UWB-IR (TH-FH/SS) Multiple Access, Proc. of NCSP'07, 265-268, Shanghai, Mar. 2007. (Keyword) UWB-IR / Acquisition / PSD Matching
8.	Eiji Tasaka, Masaki Hashizume, Seiichi Nishimoto, Hiroyuki Yotsuyanagi, Takahiro Oie, Ikuro Morita and Toshihiro Kayahara : At Speed Testing of Bus Interconnects in Microcomputers, 7th Workshop on RTL and High Level Testing (WRTLT06), 123-127, Fukuoka, Nov. 2006.
9.	Kazuhide Kanenishi, Kenji Matsuura, Takahiro Oie, Yasuo Miyoshi, Masahiko Sano and Yoneo Yano : Construction and Operation of a Portal System at Tokushima University, Proceedings of E-Learn 2006, 642-647, Honolulu, Oct. 2006. (Summary) Presently, in order to promote on-campus computerization, the introduction of the university information portal has been advanced in higher education institutes. There are many university information portals. However, the university information portal is in a transition period as a learning/research support system, leaving its definition still ambiguous. In this paper we propose a model for the university information portal. We clarify the difference between enterprise and university information portals then organize the functions of the university information portal. The university information portal is not a single WEB based system. The university information portal is a system that integrates the distributed database and the WEB based system, and is also a framework that becomes the information foundation. In this paper, the information portal of Tokushima University is taken as a case example and the problems of its development and operation are examined. First, the current state of the WEB system in Tokushima University is described. Next, the method of the WEB system integration is described. Sharing contents and authentication information is important for the construction of a university.
10.	Yasuo Miyoshi, Takahiro Oie, Hiroshi Kawakami, Tetsushi Ueta and Yoneo Yano : e-Syllabus System Supporting the Discovery of Learning Paths, Proceedings of E-Learn 2006, 784-789, Honolulu, Oct. 2006. (Summary) We have developed an e-Syllabus system that represents graphically and dynamically the relationships between lectures. This development represents one of the improvements of infrastructure for education and learning. In order to construct the e-Syllabus, three new columns have been added to each lecture of the syllabus: keywords, preceding lectures and relational lectures. XML is used as a storage format; it allows us to represent the structured data within on a text file that can be stored on a CD-ROM. Thus, without accessing the web, it is possible to represent graphically and discover the relations between the lectures. This representation of the syllabus supports the students in the discovery of learning-paths and the definition of learning plan. Thus, the e-Syllabus system improves the convenience of using the syllabus.
11.	Kenji Maegawa, Takahiro Oie and Tadamitsu Iritani : Proposal of Rapid Acquisition Method using PSD Matching for UWB-IR (TH-FH/SS) Multiple Access, Proc. of NCSP'06, 413-416, Honolulu, Mar. 2006.
12.	Takafumi Yamada, Takahiro Oie and Tadamitsu Iritani : Dual Loop Coherent Synthesizer for UWB-IR, --- For Generating Modulated Gaussian Pulse ---, Proc. of NCSP'05, 363-366, Honolulu, Mar. 2005.
13.	Hirofumi Eboshi, Takahiro Oie and Tadamitsu Iritani : Manufacturing of PC Built-in Ethernet Bridge for Internet Monitoring System, Proc. of NCSP'05, 339-342, Honolulu, Mar. 2005.
14.	Takafumi Yamada, Takahiro Oie and Tadamitsu Iritani : Dual Loop Coherent Synthesizer for UWB-IR, Proc. of NCSP'04, 455-458, Honolulu, Mar. 2004.
15.	Hirofumi Eboshi, Takahiro Oie and Tadamitsu Iritani : CPU Load Reduction by PCI-PLD Packet Filtering for Internet Monitoring System, Proc. of NCSP'04, 61-64, Honolulu, Mar. 2004.
16.	Masahiro Nakabayashi, Takahiro Oie and Tadamitsu Iritani : MHz Hopping Narrow-GHz-band Frequency Synthesizer Assuming Piecewise Linearity of VCO Characteristics, Proceedings of the 2002 International Symposium on Information Theory and Its Applications, No.S3-6-3, Xi'an, Oct. 2002.
17.	Masashi Nanbu, Takahiro Oie and Tadamitsu Iritani : Phase-difference interpolating SHPD-PLL frequency synthesizer with optimized loop gain control, Proceedings of the IASTED International Conference 2002, Wireless and Optical Communications, 635-640, Banff, Jul. 2002.
18.	Satoshi Furukawa, Takahiro Oie and Tadamitsu Iritani : Spur Reduction by Phase Truncation Error Compensation on Direct Digital Synthesis, --- using non-`2ⁿ` phase accumulator ---, Proceedings of the 2001 International Technical Conference on Circuits/Systems, Computers and Communications, Vol.II, 1304-1307, Tokushima, Jul. 2001.
19.	Makoto Honjou, Tadamitsu Iritani and Takahiro Oie : First-Order SHPD-PLL Released Lock Range, Proceedings of the 2001 International Technical Conference on Circuits/Systems, Computers and Communications, Vol.II, 1013-1016, Tokushima, Jul. 2001.
20.	Masashi Nanbu, Tsuyoshi Wasamoto, Takahiro Oie and Tadamitsu Iritani : Phase-difference interpolating SHPD-PLL frequency synthesizer driven by variable-rate reference, Proceedings of the 2001 International Technical Conference on Circuits/Systems, Computers and Communications, Vol.II, 1009-1012, Tokushima, Jul. 2001.
21.	Takashi Kitagawa, Tetsuji Uebo, Takahiro Oie and Tadamitsu Iritani : Range-finding by Short-range Radar Using Standing Wave, Proceedings of the 2001 International Technical Conference on Circuits/Systems, Computers and Communications, Vol.I, 17-20, Tokushima, Jul. 2001.
22.	Takahiro Oie, Youji Ochi, Tetsushi Ueta, Yoneo Yano and Hiroshi Kawakami : A Database Orienting Information Disclosure on Campus Network, Proceedings of 2nd International Conference on Information Technology Based Higher Education and Training, Kumamoto, Jul. 2001.
23.	Tsuyoshi Wasamoto, Masashi Nanbu, Takahiro Oie and Tadamitsu Iritani : Phase-difference interpolating SHPD-PLL frequency synthesizer driven by high-rate reference, Proceedings of the 6th Asia-Pacific Conference on Communications, Vol.II, 1012-1016, Seoul, Nov. 2000.
24.	Eiji Okada, Takahiro Oie and Tadamitsu Iritani : High frequency resolution 2.4GHz band rapid frequency change synthesizer, Proceedings of the European Conference on Circuit Theory and Design ECCTD '99, Vol.I, 297-300, Stresa, Aug. 1999.
25.	Takahiro Oie and Tadamitsu Iritani : Spur-Reduced Digital Sinusoid Synthesis with Small Sine ROM, Proceedings of the 1998 International Symposium on Nonlinear Theory and its Applications, Vol.3, 1015-1018, Crans-Montana, Switzerland, Sep. 1998.
26.	Tomofumi Yamaguchi, Tadamitsu Iritani and Takahiro Oie : A New FSK Modulation Method with Fast Frequency Hopping PLL Synthesizer for FH-SS Communication System, Proceedings of the Third Asia-Pacific Conference on Communication, 613-617, Australia, Nov. 1997.
27.	Masashi Nanbu, Tadamitsu Iritani and Takahiro Oie : GHz Band Fast Hopping PLL Synthesizer, Proceedings of Personal, Indoor and Mobile Radio Communication PIMRC '96, Vol.1, 223-227, Taipei, Nov. 1996.
28.	Takahiro Oie : Transient Behavior of PLL Demodulator by Multi-sinusoidal Inputs, Proceedings of 1996 International Symposium on Nonlinear Theory and its Applications, 495-498, Kochi, Oct. 1996.
29.	Takahiro Oie : Response of 2nd Order PLL Demodulator by Two Sinusoidal Inputs, Proceedings of 1995 International Symposium on Nonlinear Theory and its Applications, Vol.1E, No.6, 155-158, Las Vegas, Dec. 1995.
30.	Takahiro Oie, Tadamitsu Iritani and Hiroshi Kawakami : Response of PLL Demodulator by Two Sinusoidal Inputs, Proceedings of 1993 International Symposium on Nonlinear Theory and its Applications, Vol.1.3, No.2, 67-70, Honolulu, Dec. 1993.
31.	Shinkichi Fujino, Tadamitsu Iritani and Takahiro Oie : A Study of Performance of Frequency Hopping-Spread Spectrum Communication Using Rapidly Synchronous Acquisition System, Communication on the Move Singapore ICCS/ISITA '92 Conference Proceedings, Vol.3, 745-749, Singapore, Nov. 1992.
32.	Tsutomu Kamitani, Tadamitsu Iritani, Takahiro Oie and Koichiro Masuda : Noncoherent FSK Receiver Using Variable Threshold Level, Communication on the Move Singapore ICCS/ISITA '92 Conference Proceedings, Vol.1, 117-121, Singapore, Nov. 1992.
33.	Junzo Kuge, Tadamitsu Iritani and Takahiro Oie : Fast Convergence Frequency Syntesizer with Small Frequency Error, Proceedings of IEEE International Conference on Selected Topics in Wireless Communication, 215-218, Vancouver, Jun. 1992.

Proceeding of Domestic Conference:

1.	Taku Tsuchida, Mitsuru Kakita and Takahiro Oie : 共同研究萌芽期における研究者間の研究関連性, ⼤学評価・IR 担当者集会 2022, Sep. 2022.
2.	Taku Tsuchida, Mitsuru Kakita, Takahiro Oie and 傳田理沙 : 地方大学における研究エフォート確保に向けた教員職務活動の状況把握, RA協議会第7回年次大会, Sep. 2021.
3.	Yu Yamasumi and Takahiro Oie : Fractional `N` Frequency Synthesizer with Automatic Loop Gain Control, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, 174, Sep. 2012. (Keyword) frequency synthesizer
4.	Tetsuya Hikida and Takahiro Oie : Consideration of the channel capacity on MIMO communication with polyhedral placed antennas, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, 195, Sep. 2011.
5.	Yu Yamasumi and Takahiro Oie : Fractional `N` Frequency Synthesizer Using Accumulator-type Frequency Comparator, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, 164, Sep. 2011.
6.	Ryuichi Moriya and Takahiro Oie : Improvement of Traffic Recorder and Inspector for After Incident, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, 316, Sep. 2011.
7.	Ryuichi Moriya and Takahiro Oie : Development of Traffic Recorder and Inspector for After Incident, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, 294, Sep. 2010.
8.	Takahiro Morimoto and Takahiro Oie : Multithreaded Analyser on High-speed Ethernet Bridge, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, 139, Sep. 2010.
9.	Norihiro Sakamoto and Takahiro Oie : System for detecting and blocking XSS by using bridge PC, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, 319, Sep. 2009.
10.	Kazuya Matsuda and Takahiro Oie : Improvement of Rapid Acquisition Method Using PSD Matching for UWB-IR (FH-TH/SS), Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, 187, Sep. 2009.
11.	Yoshiro Yamaguchi and Takahiro Oie : Design of UWB-IR Primary Pulse by Combining Weighted Sinusoids Using Sinc Function Interpolation, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, 186, Sep. 2009.
12.	Takayuki Kimura and Takahiro Oie : High Speed Convergence Fractional-`N` PLL Frequency Synthesizer with Improved Phase Comparator, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, 185, Sep. 2009.
13.	Kenji Matsuura, Kazuhide Kanenishi, Takahiro Oie, Tetsushi Ueta, Masahiro Nakagawa and Yoneo Yano : Designing authentication and authorization for federated systems, Proceedings of the 2009 IEICE General Conference, S-141-S-142, Mar. 2009. (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1573387452362391168 (CiNii: 1573387452362391168)
14.	Kazuya Matsuda and Takahiro Oie : Proposal for Rapid Acquisition Method Using PSD Matching for UWB-IR (FH-TH/SS), --- Norrowing of candidate point using high-order filter ---, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, 171, Sep. 2008.
15.	Takayuki Ishikawa and Takahiro Oie : Improvement of Fundamental Pulse Shape for UWB-IR by Combining Modulated Gaussian Pulses, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, 170, Sep. 2008.
16.	Yoshiro Yamaguchi and Takahiro Oie : Comparison and Examination of UWB-IR Basic Pulse by Convolving in Window Function and Sinc Function, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, 169, Sep. 2008.
17.	Keishiro Nakahigashi, Takayuki Kimura and Takahiro Oie : Design of Phase Detector Control of Fractional-`N` PLL Frequency Synthesizer with High Speed Convergence, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, 167, Sep. 2008.
18.	Takayuki Kimura, Takahiro Oie and Keishiro Nakahigashi : Convergence Speed of Fractional-`N` PLL Frequency Synthesizer Compatible with Frequency High Speed Convergence and High Resolution, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, 166, Sep. 2008.
19.	Norihiro Sakamoto and Takahiro Oie : OS embedded packet analyzing driver for supervising network traffic, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, 349, Sep. 2008.
20.	Tatsuya Shimamoto, Eiji Tasaka, Toshihiro Kayahara, Hiroyuki Yotsuyanagi, Takahiro Oie and Masaki Hashizume : At-Speed Test Program for Stuck-at Faults at Buses in Z80, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, 100, Sep. 2007.
21.	Takayuki Ishikawa and Takahiro Oie : Suitable Pulse Shaping for UWB-IR Modulation and Demodulation by Modulated Gaussian Pulse, 平成19年度電気関係学会四国支部連合大会講演論文集, No.12-20, 170, Sep. 2007.
22.	Hiroki Yuasa and Takahiro Oie : A Study of Adequate Modulated Gaussian Pulse Sequence for UWB-IR, 平成19年度電気関係学会四国支部連合大会講演論文集, No.12-19, 169, Sep. 2007.
23.	Takayuki Kimura, Takahiro Oie and Tadamitsu Iritani : Design of Fractional-N PLL Frequency Synthesizer with High Speed Convergence, 平成19年度電気関係学会四国支部連合大会講演論文集, No.12-15, 165, Sep. 2007.
24.	Yasuo Miyoshi, Takahiro Oie, Akitsugu Murakami and Yoneo Yano : Development of Content Management System Based on the WebDAV Standard, 日本教育工学会第23回全国大会講演論文集, 721-722, Sep. 2007. (Summary) 我々は徳島大学教育・研究者情報データベース (EDB) の独自開発・運用を行っている．そして新たにEDBと連携するeコンテンツサーバ (EDB/CMS) を構築した．本システムではWebDAVを用いることで，外付HDDやUSBメモリ等にファイルをコピーする感覚でコンテンツの登録が行える． (Keyword) コンテンツマネージメントシステム / WebDAV / 教材管理 / 教材公開
25.	Kenji Maegawa, Takahiro Oie and Tadamitsu Iritani : Evaluation of Rapid Acquisition Method Using PSD Matching for UWB-IR (TH-FH/SS) MA with cos-sin Modulated Gaussian Pulse, 平成18年度電気関係学会四国支部連合大会講演論文集, No.12-11, 127, Sep. 2006.
26.	Yasuo Miyoshi, Takahiro Oie, Tetsushi Ueta, Masanori Hirotomo, Yoneo Yano and Hiroshi Kawakami : Support for Finding Learning Path by Relevant Lectures in e-Syllabus, JSiSE Research Report, Vol.20, No.4, 7-12, Nov. 2005. (Summary) 徳島大学では教育·研究者情報データベース (EDB) を利用してシラバスを作成してきた．現在，EDBに登録されたXML形式のシラバス情報を元に科目間の関連性をグラフ表示するLearning Path Finderの開発を行っている．これにより履修時の学習経路検索が支援されシラバスの使い勝手が向上する． (Keyword) Learning Path / Syllabus / XML / XML / Relational Database
27.	Hidehito Hirajima, Takahiro Oie and Tadamitsu Iritani : Research on the TTL Value Distribution Analysis of IP Header and IP Packet Camouflage Detection, 平成17年度電気関係学会四国支部連合大会講演論文集, No.16-31, 317, Sep. 2005.
28.	Takahiro Miki, Takahiro Oie and Tadamitsu Iritani : Spoofing Detection using Analysis of TCP Connections, 平成17年度電気関係学会四国支部連合大会講演論文集, No.16-30, 316, Sep. 2005.
29.	Kenji Maegawa, Takahiro Oie and Tadamitsu Iritani : Proposal of Rapid Acquisition Method using PSD Matching for UWB-IR (TH-FH/SS) Multiple Access, 平成17年度電気関係学会四国支部連合大会講演論文集, No.12-7, 168, Sep. 2005.
30.	Yasuo Miyoshi, Takahiro Oie, Tetsushi Ueta and Yoneo Yano : Publication of Syllabus with Educators and Researchers' Information Database in Tokushima University, 教育システム情報学会30周年記念全国大会講演論文集, 553-554, Aug. 2005. (Summary) 徳島大学では，情報の再利用を設計思想とした教育·研究者情報データベース(EDB: Educators and Researchers' Information Database, 以下 EDB)を独自に開発，運用を行っている．大学においては，種々の定期刊行物(紀要，教育要覧，研究要覧など)を出版しているが，EDBの各種刊行物のためのLaTeX形式の出力機能により，それにかかるコスト削減に成功している．具体的には，教員が登録した情報から冊子の版下までをEDBで作成できるため，校正が不要となり，冊子を印刷するための時間と費用が節約できる． (Keyword) syllabus / 講義概要 / XML / Relational Database
31.	Hirofumi Eboshi, Takahiro Oie and Tadamitsu Iritani : Manufacturing of PC built-in Ethernet Bridge for Internet Monitoring System, 平成16年度電気関係学会四国支部連合大会講演論文集, No.16-9, 275, Sep. 2004.
32.	Takahiro Miki, Takahiro Oie and Tadamitsu Iritani : Spoofing detection using analysis of TCP header option, 平成16年度電気関係学会四国支部連合大会講演論文集, No.16-10, 276, Sep. 2004.
33.	Hidehito Hirajima, Takahiro Oie and Tadamitsu Iritani : Research on the TTL value distribution analysis of IP header and IP packet camouflage detection, 平成16年度電気関係学会四国支部連合大会講演論文集, No.12-11, 175, Sep. 2004.
34.	Takafumi Yamada, Takahiro Oie and Tadamitsu Iritani : Coherent frequency synthesizer for generating modulated Gaussian pulse on UWB-IR, 平成16年度電気関係学会四国支部連合大会講演論文集, No.12-1, 165, Sep. 2004.
35.	Masashi Nanbu, Takahiro Oie and Tadamitsu Iritani : Fractional-`N` divider PLL synthesizer which used the DA converter for the charge pump, 平成15年度電気関係学会四国支部連合大会講演論文集, No.12-12, 199, Oct. 2003.
36.	Yuya Yamaguchi, Takahiro Oie and Tadamitsu Iritani : The Fast Hopping Frequency Synthesizer using Approximation of VCO's Characteristics for FFH-SS Communication, --- The correction method of reference voltage using inverse matrix of the coefficients of Lagrange interpolation ---, 平成15年度電気関係学会四国支部連合大会講演論文集, No.12-11, 198, Oct. 2003.
37.	Takafumi Yamada, Takahiro Oie and Tadamitsu Iritani : Improvement of accuracy of the FFH-SS fractional frequency synthesizer, 平成15年度電気関係学会四国支部連合大会講演論文集, No.12-10, 197, Oct. 2003.
38.	Hirofumi Eboshi, Takahiro Oie and Tadamitsu Iritani : CPU Load Reduction by PCI-PLD Packet Filtering for Internet Monitoring System, 平成15年度電気関係学会四国支部連合大会講演論文集, No.16-23, 324, Oct. 2003.
39.	Takahiro Oie, Tetsushi Ueta and Yoneo Yano : Development and operation of education and research database in Tokushima University, 平成15年度工学·工業教育研究講演会講演論文集, 633-636, Sep. 2003. (Summary) 大学においては，教育・研究活動を広報する目的で，紀要，教育要覧，研究要覧などの定期刊行物(以下，刊行物)を出版している．刊行物に収録することにより読者に効果的にアピールできる項目としては，構成員の業績リストが挙げられる．一方で，大学の構成員に対する業績調査も頻繁に行われており，教職員はその都度調書の作成を行っている．これの刊行物や調書を制作するためのデータは，例えば学歴，職歴のように職員個人にとっては不変の情報であったり，著作リストのように既存のデータを追加するだけで済む情報である．しかし，個人のデータの記録書式や，編集者のデータ収集方法を統一することは困難であり，よって，刊行物ごとにデータの再入力が強いられ，結果，編集・校正に長い期間を要し，データ入力者のみならず編集者にとっても多大な負担となる．そこで本学では，上記刊行物の網羅すべき項目を洗いだし，「情報の再利用」を設計思想として，ユーザの入力と刊行物の編集作業の援用を指向した「教育・研究者情報データベース」(EDB; Education and research database, 以下，EDB)を構築した．本稿ではこの EDB の開発と運用について述べる． (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1390001206110975744 (CiNii: 1390001206110975744)
40.	Kei Shinkubo, Takahiro Oie and Tadamitsu Iritani : Spoofing Detection Using Analysis of User's Key Stroke, 電子情報通信学会2003年総合大会講演論文集, No.D-9-1, 125, Mar. 2003.
41.	Yuya Yamaguchi, Takahiro Oie and Tadamitsu Iritani : The Fast Hopping Frequency Synthesizer using Approximation of VCO's Characteristics, 電子情報通信学会2003年総合大会講演論文集, No.A-5-4, 143, Mar. 2003.
42.	Tadashi Okamoto, Yoshiaki Shiraishi, Takahiro Oie and Masakatu Morii : ユーザを識別する侵入検知システム(IDS)に関する研究, 第三回コンピュータ犯罪に関する白浜シンポジウム, Vol.B-1, May 1999.
43.	Takahiro Oie : Reduction of WWW traffic by inter-connecting quasi-public caches, Proceedings of the 1998 IEICE General Conference, Vol.D, No.9-30, 193, Mar. 1998.
44.	Koji Kasahara, Yuya Tonai, Takahiro Oie and Tadamitsu Iritani : 干渉および2パスフェージング下のFH-SS通信同期獲得時間の測定, Proceedings of the 1998 IEICE General Conference, Vol.A, No.5-2, Mar. 1998.
45.	Masakazu Kimura, Tadamitsu Iritani and Takahiro Oie : 2πをこえる位相差で動作可能なPLL, Proceedings of the 1998 IEICE General Conference, Vol.B, No.5-5, Mar. 1998.
46.	Koji Kasahara, Takahiro Oie and Tadamitsu Iritani : Acquisition-time of frequency-waiting method with multipath-fading and interference signals on FH-SS communication, Proceedings of The 20th Symposium on Information Theory and Its Applications, Vol.II, 907-910, Dec. 1997.
47.	Takahiro Oie : Reduction of extra-ISP traffic using WWW object cache, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.16-11, 260, Oct. 1997.
48.	Koji Kasahara, Takahiro Oie and Tadamitsu Iritani : Acquisition time with interference signals and multi-path fading on FH-SS communication, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.12-4, 170, Oct. 1997.
49.	Masakazu Kimura, Tadamitsu Iritani and Takahiro Oie : PLL demodulator used in high frequency with variable threshold, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.12-2, 168, Oct. 1997.
50.	Tomofumi Yamaguchi, Tadamitsu Iritani and Takahiro Oie : Fast FH-SS/m-FSK Modulator, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.12-1, 167, Oct. 1997.
51.	Takahiro Oie : WWW Directory with Related Words, 電子情報通信学会総合大会講演論文集, Vol.D, No.9-20, 213, Mar. 1997.
52.	Kazuya Uragami, Takahiro Oie and Tadamitsu Iritani : Re-acquisition time for characteristic of signal detector in FH-SS Communication System, 電子情報通信学会総合大会講演論文集, Vol.A, No.5-1, 206, Mar. 1997.
53.	Takahiro Oie : WWW Directory with Synonym and Reference Words, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.16-22, 260, Oct. 1996.
54.	T. Tshering, Takahiro Oie and Tadamitsu Iritani : Fast Frequency Hopping Technique to combat Multipath fading in Rural Radio communication environment, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.12-4, 156, Oct. 1996.
55.	Kazuya Uragami, Takahiro Oie and Tadamitsu Iritani : Re-acquisition time for bandwidth of signal detector in FH-SS Communication System, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.12-3, 155, Oct. 1996.
56.	Tomofumi Yamaguchi, Tadamitsu Iritani and Takahiro Oie : Fast Hopped FSK Modulation in Frequency Hopped Spread Spectrum Communication System, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.12-2, 154, Oct. 1996.
57.	Takahiro Oie : WWW Information Directory Indexed by Japanese Pronounce, 電子情報通信学会総合大会講演論文集, Vol.D, 171, Mar. 1996.
58.	Kazuya Uragami, Takahiro Oie and Tadamitsu Iritani : Re-acquisition Method by Waiting Frequency in FH-SS Communication System, 電子情報通信学会総合大会講演論文集, Vol.A, No.239, 241, Mar. 1996.
59.	Masashi Nishiyam, Tadamitsu Iritani and Takahiro Oie : FSK Demodulation with Variable Threshold Level, 電子情報通信学会総合大会講演論文集, Vol.B, No.934, 366, Mar. 1996.
60.	Takahiro Oie : WWWページ情報検索データベースの運用, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.16-44, 352, Nov. 1995.
61.	Yoshihiro Kanayama, Takahiro Oie and Tadamitsu Iritani : 通信用任意波形発生機のグラフィカルユーザインターフェースの製作, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.12-17, 219, Nov. 1995.
62.	Masashi Nishiyam, Tadamitsu Iritani and Takahiro Oie : 可変しきい値方式を用いたFSK復調のS/N, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.12-16, 218, Nov. 1995.
63.	Kazuya Uragami, Takahiro Oie and Tadamitsu Iritani : FH-SS通信の同期復帰法に関する研究, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.12-10, 212, Nov. 1995.
64.	Junji Ishitobi, Takahiro Oie and Tadamitsu Iritani : FH-SS受信機の同期獲得回路の高速化, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.12-9, 211, Nov. 1995.
65.	Masashi Nanbu, Tadamitsu Iritani and Takahiro Oie : 30MHz帯高速ホッピングPLL周波数シンセサイザ, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.12-8, 210, Nov. 1995.
66.	Takashi Hoshiba, Tadamitsu Iritani and Takahiro Oie : FH-SS通信における変復調器, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.12-28, 223, Oct. 1994.
67.	Junji Ishitobi, Takahiro Oie and Tadamitsu Iritani : 周波数ホッピング方式スペクトル拡散通信の検波回路に関する研究, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.12-27, 222, Oct. 1994.
68.	Yoshihisa Tamai, Tadamitsu Iritani and Takahiro Oie : VCO位相ずれ誤差のない高速ホッピング周波数シンセサイザ, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.12-26, 221, Oct. 1994.
69.	Takahiro Oie and Tadamitsu Iritani : FH-SS通信2次PLL-FSK復調器の同期特性, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.12-25, 220, Oct. 1994.
70.	Yoshimitsu Yoshida, Tadamitsu Iritani and Takahiro Oie : 符号間干渉を避けたFSK復調, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.12-23, 218, Oct. 1994.
71.	Yoshikazu Miyamura, Takahiro Oie and Tadamitsu Iritani : Saving Memory DDS Arbitrary Wave Generator, 電子情報通信学会総合大会講演論文集, Vol.A, No.45, 46, Mar. 1994.
72.	Yoshimitsu Yoshida, Tadamitsu Iritani and Takahiro Oie : 低S/N時におけるFH-SS通信の同期獲得法, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.12-12, 213, Oct. 1993.
73.	Shinkichi Fujino, Takahiro Oie and Tadamitsu Iritani : FH-SS通信同期獲得回路の改良, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.12-11, 212, Oct. 1993.
74.	Hiroaki Mizogui, Tadamitsu Iritani and Takahiro Oie : 初期値提示型800MHz帯高速ホッピング周波数シンセサイザと位相差補償方式, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.12-6, 207, Oct. 1993.
75.	Takahiro Oie, Tadamitsu Iritani and Hiroshi Kawakami : 2つの正弦波入力に対するPLLの応答, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.12-5, 206, Oct. 1993.
76.	Suguru Yoshioka, Tadamitsu Iritani and Takahiro Oie : 位相差のリセットが可能なPLL復調器, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.12-4, 205, Oct. 1993.
77.	Tadamitsu Iritani and Takahiro Oie : PLLを用いたしきい値可変のFSK復調, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.12-3, 204, Oct. 1993.
78.	Tsutomu Kamitani, Tadamitsu Iritani and Takahiro Oie : データフィルタを用いた2レベル可変しきい値FSK復調, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.12-2, 203, Oct. 1993.
79.	Yoshikazu Miyamura, Takahiro Oie and Tadamitsu Iritani : 波形階層化による通信用任意波形発生器の省RAM化, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.12-1, 202, Oct. 1993.
80.	Shinkichi Fujino, Takahiro Oie and Tadamitsu Iritani : 20MHz帯周波数ホッピング方式スペクトル拡散通信のふるまい, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.4-21, 143-144, Oct. 1992.
81.	Takahiro Oie and Tadamitsu Iritani : FH-SS通信における同期獲得時間短縮法の検討, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.4-20, 141-142, Oct. 1992.
82.	Junzo Kuge, Tadamitsu Iritani and Takahiro Oie : 高速初期値提示型高速ホッピング周波数シンセサイザ, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.4-19, 139-140, Oct. 1992.
83.	Hiroaki Mizogui, Junzo Kuge, Takahiro Oie and Tadamitsu Iritani : 800MHz帯高速ホッピング周波数シンセサイザの製作, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.4-18, 137-138, Oct. 1992.
84.	Tsutomu Kamitani, Tadamitsu Iritani and Takahiro Oie : 可変しきい値方式を用いたFSK復調の誤差伝播を考慮したビット誤り率, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.4-17, 135-136, Oct. 1992.
85.	Yoshikazu Miyamura, Takahiro Oie and Tadamitsu Iritani : 通信用任意波形発生器におけるRAMの小容量化について, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.4-16, 133-134, Oct. 1992.
86.	Junzo Kuge, Tadamitsu Iritani and Takahiro Oie : 高速ホッピング周波数シンセサイザにおける周波数誤差, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.4-19, 153-154, Oct. 1991.
87.	Takahiro Oie, Tadamitsu Iritani and Junzo Kuge : 周波数ホッピング方式スペクトル拡散通信機の同期回路の検討, Journal of Shikoku-Section Joint Convention of the Institutes of Electrical and Related Engineers, No.4-18, 151-152, Oct. 1991.
88.	Takahiro Oie, Shunsuke Sato, Chikao Uyama, Tetsuo Sugahara, Yoshio Yanagihara and Naozo Sugimoto : 冠動脈造影像における血管像抽出, 日本脈管学会総会, Oct. 1989.
89.	Takahiro Oie, Shunsuke Sato, Chikao Uyama, Tetsuo Sugahara, Yoshio Yanagihara and Naozo Sugimoto : Extraction of Coronary Artery on Cineangiograms, 医用電子と生体工学第27巻特別号, No.3-A-2, 350, May 1989.
90.	Takahiro Oie, Shunsuke Sato, Chikao Uyama, Tetsuo Sugahara, Yoshio Yanagihara and Naozo Sugimoto : 冠動脈造影像における血管追跡, 日本脈管学会総会, Oct. 1988.
91.	Takahiro Oie, Shunsuke Sato, Chikao Uyama, Tetsuo Sugahara, Yoshio Yanagihara and Naozo Sugimoto : Computer Vessel-tracing and Estimation of Coronary Stenosis on Cineangiograms, 医用電子と生体工学第26巻特別号, No.1-D-66, 293, Apr. 1988.

Et cetera, Workshop:

1.	Takahiro Oie : EDB/PKI and Campus Wireless LAN Authentication, ITRC 20th Meeting, Oct. 2006.
2.	Kazuhide Kanenishi, Kenji Matsuura, Takahiro Oie, Yasuo Miyoshi, Masahiko Sano, Shunichiro Oe and Yoneo Yano : 大学ポータルの徳島大学における構築とその運用について, 平成17年度情報処理研究集会講演論文集, 113-116, Nov. 2005.
3.	Kazuhide Kanenishi, Kenji Matsuura, Takahiro Oie, Yasuo Miyoshi, Masahiko Sano, Shunichiro Oe and Yoneo Yano : Construction and Operation Method of the University Information Portal in the Tokushima University, IPSJ SIG Technical Report (2005-DSM-39), Vol.2005, No.101, 1-6, Oct. 2005.
4.	Yasuo Miyoshi, Takahiro Oie, Kenji Matsuura, Kazuhide Kanenishi, Masahiko Sano, Shunichiro Oe and Yoneo Yano : Implementation and Operation of Authentication Infrastructure for Wireless Network in Tokushima University, IPSJ SIG Technical Reports (2005-DSM-39), Vol.2005, No.101, 61-66, Oct. 2005. (Summary) We have created and maintained the wireless network infrastructure for students and staff in Tokushima University. Both of the students and staff can equally use campus network with wireless LAN connection through base stations placed at campus public area. We have standardized setting of the base stations in our campus and provided authentication information and certificate servers. Registration of users, setting of additional certification servers and expense of maintenance are not necessary for extended base stations in future. (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1520009409507823104 (CiNii: 1520009409507823104)
5.	Kenji Maegawa, Takahiro Oie and Tadamitsu Iritani : Proposal of Rapid Acquisition Method using PSD Matching for UWB-IR (FH/SS) Multiple Access, IEICE Technical Report, Vol.105, No.137, 31-36, Jun. 2005. (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1520009407533820032 (CiNii: 1520009407533820032)
6.	Yasunori Mori, Takahiro Oie and Tadamitsu Iritani : Coherent Frequency Synthesizer for FH-SS Communication, IEICE Technical Report, Vol.SST2000, No.193, 241-245, Mar. 2001. (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1520290883545650560 (CiNii: 1520290883545650560)
7.	Masahiro Nakabayashi, Takahiro Oie and Tadamitsu Iritani : Improvement of MHz Hopping Frequency Synthesizer for FH-SS Communication, IEICE Technical Report, Vol.SST2000, No.172, 97-101, Mar. 2001. (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1520009407032381568 (CiNii: 1520009407032381568)
8.	Takahiro Oie, Tsuyoshi Wasamoto and Tadamitsu Iritani : Rapid Acquire SHPD Synthesizer with High-rate Reference by Interpolating Phase Difference, Proceedings of the 13th Karuizawa Workshop on Circuits and Systems, 343-348, Apr. 2000. (Summary) サンプルホールド型位相比較周波数シンセイサイザは，ループにローパスフィルタを含まないことから，1次の周波数収束が可能である．更に基本(リファレンス)周波数を高くすることで，基本周波数に比例した速さで周波数収束が可能である．しかし，合成可能な出力周波数の間隔が基本周波数に等しくなるという制約があり，出力周波数の分解能が荒くなる．本稿では，基本周波数を高くしたときに，特定の規則で分周比を変化させ，連続する2つの位相差から目的周波数に対応する位相差を補間することで，出力周波数間隔を保ったまま，高速な周波数切換えが可能なシンセサイザを提案する．また，数値シミュレーションにより，基本周波数に比例した速さで収束が可能であることを示す．
9.	Tsuyoshi Wasamoto, Takahiro Oie and Tadamitsu Iritani : Rapid SHPD frequency synthesizer by converging phase difference transition, Proceedings of the 2000 IEICE General Conference, Vol.1, 9, Mar. 2000.
10.	Eiji Okada, Takahiro Oie and Tadamitsu Iritani : MHz Hopping Frequency Synthesizer for FFH-SS Communication, IEICE Technical Report, Vol.SST99, No.140, 39-44, Mar. 2000. (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1520572360247781248 (CiNii: 1520572360247781248)
11.	Tadashi Okamoto, Yoshiaki Shiraishi, Takahiro Oie and Masakatu Morii : ネットワークの監視による不正ユーザ検知システム, IEICE Technical Report, Vol.CQ99-74, Feb. 2000.
12.	Tadamitsu Iritani, Hidetaka Miyatake, 片岡実, 山下悟郎 and Takahiro Oie : 見通し外交差点の出会い頭事故防止にも有効な車車間通信方式, IEICE Technical Report, Vol.ITS99, No.30, 37-42, Nov. 1999.
13.	Tadashi Okamoto, Yoshiaki Shiraishi, Takahiro Oie and Masakatu Morii : なりすましに対する不正侵入検知システム(IDS-M), IEICE Technical Report, Vol.OFS99-15, 39-46, Jul. 1999.
14.	Takahiro Oie : 準公開Squid接続計画におけるキャッシュ間接続の利用統計, 情報処理学会全国大会講演論文集, Vol.3, 367-368, Mar. 1999.
15.	Tadamitsu Iritani, 井原敬能, 片岡実 and Takahiro Oie : 交差点等の交通事故防止のための見通し外車車間通信方式, IEICE Technical Report, Vol.SST98, No.36, 37-40, Oct. 1998.
16.	Eiji Okada, Takahiro Oie and Tadamitsu Iritani : High Frequency Resolution 2.4GHz band Rapid Frequency Change Synthesizer, IEICE Technical Report, Vol.SST98, No.9, 45-50, Jun. 1998. (Link to Search Site for Scientific Articles) ● CiNii @ National Institute of Informatics (CRID): 1572824502268921216 (CiNii: 1572824502268921216)
17.	Tadamitsu Iritani, Masashi Nishiyama and Takahiro Oie : Noncoherent FSK-PLL Demodulation Free From Intersymbol Interference Using Variable Threshold Level, IEICE Technical Report, Vol.SST97, No.69, 79-84, Sep. 1997.
18.	Tomofumi Yamaguchi, Tadamitsu Iritani and Takahiro Oie : Fast FH-FSK Modulation Method Using Fast Frequency Hopping PLL Synthesizer, IEICE Technical Report, Vol.SST97, No.68, 73-78, Sep. 1997.
19.	Koji Kasahara, Takahiro Oie and Tadamitsu Iritani : Acquisition-time of frequency-waiting method with interference transmitters on FH-SS communication, IEICE Technical Report, Vol.SST97, No.9, 55-60, Jun. 1997.
20.	Yoshiaki Shiraishi, Takahiro Oie and Masakatu Morii : 広域インターネット上での静止および動画像配送実験, IEICE Technical Report, Vol.OFS97-4, 15-20, May 1997.
21.	Takahiro Oie : ISP Administration with Organization Information Database, 分散システム研究会, 7-12, Jul. 1996.
22.	Takahiro Oie : Auutomatic Name-server Configuration by Host Information Database, IEICE Technical Report, Vol.OSF96, No.11, 7-12, May 1996.
23.	Takahiro Oie and Tadamitsu Iritani : A Study of Rapid Synchronous Acquisition Method on FH-SS Communication, IEICE Technical Report, Vol.SST94, No.54, 1-6, Oct. 1994.
24.	Tadamitsu Iritani, Takahiro Oie and Yoshimitsu Yoshida : Noncoherent FSK Demodulation Free From InterSymbol Interference Using Variable Threshold Level, IEICE Technical Report, Vol.SST93, No.108, 49-53, Mar. 1994.
25.	Hiroaki Mizogui, Tadamitsu Iritani and Takahiro Oie : Fast Hopping Frequency Synthesizer on the 800HHz Band, IEICE Technical Report, Vol.SST93, No.29, 61-66, Aug. 1993.
26.	Junzo Kuge, Tadamitsu Iritani and Takahiro Oie : Error Analysis of Fast Hopping Frequency Synthesizer by substituting initial phase diffference into the PLL every hopping, IEICE Technical Report, Vol.SST92, No.6, 33-38, Apr. 1992.
27.	Takahiro Oie, Tadamitsu Iritani and Junzo Kuge : A Method for Rapid Acquisition on Frequency Hopping Spread Spectrum Communication, IEICE Technical Report, Vol.SST91, No.59, 61-66, Mar. 1992.
28.	Takahiro Oie and Shunsuke Sato : Study of Edge Detection of Coronary Arteries Applying Laplacian Gaussian on Cineangiogram, IEICE Technical Report, Vol.MBE90, No.50, 77-84, Jul. 1990.
29.	Takahiro Oie, Shunsuke Sato, Chikao Uyama, Tetsuo Sugahara, Yoshio Yanagihara and Naozo Sugimoto : Measurement of Cross-sectional Area of Coronary Artery by Videodensitometric Method on Cineangiograms, --- Approach using Adaptive Laplacian Gaussian Filter ---, IEICE Technical Report, Vol.MBE89, No.122, 67-74, Feb. 1990.
30.	Takahiro Oie, Shunsuke Sato and Chikao Uyama : 冠動脈狭窄の医用画像処理, 第13回大阪大学BME研究会コロキアム, 1-6, Feb. 1990.
31.	Takahiro Oie, Shunsuke Sato, Chikao Uyama, Tetsuo Sugahara, Yoshio Yanagihara and Naozo Sugimoto : Computer Vessel-tracing and Estimation of Coronary Stenosis on Cineangiograms, IEICE Technical Report, Vol.MBE88, No.46, 85-92, Jul. 1988.
32.	Takahiro Oie, Shunsuke Sato, Chikao Uyama, Tetsuo Sugahara, Yoshio Yanagihara and Naozo Sugimoto : 冠動脈造影像における血管追跡と狭窄検出, 心臓放射線研究会, Jun. 1988.

Patent:

1.	Tadamitsu Iritani, Takahiro Oie and Tomofumi Yamaguchi : 周波数シンセサイザ, H9-83613 (Apr. 1997), H10-285025 (Oct. 1998), 3775886 (Mar. 2006).
2.	Tadamitsu Iritani and Takahiro Oie : 周波数シンセサイザ, H6-249682 (Oct. 1994), H8-116255 (May 1996), 3040319 (Mar. 2000).
3.	Tadamitsu Iritani, Takahiro Oie and Tomofumi Yamaguchi : 周波数偏移キーイング信号の復調装置, H6-75864 (Apr. 1994), H7-288552 (Oct. 1995), .

Grants-in-Aid for Scientific Research (KAKEN Grants Database @ NII.ac.jp)

メガヘルツホッピング高周波数分解能シンセサイザに関する研究 (Project/Area Number: 11750329 )
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Professor : Oie, Takahiro

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