生岩 量久 HAEIWA Kazuhisa

Articles:  1-20 of 265

  • 10GHz帯集中定数型LN光変調器の開発  [in Japanese]

    生岩 量久 , 鳥羽 良和 , 神尾 武司 [他]

    放送技術 67(11), 101-105, 2014-11

  • A-5-7 Influence of Coupling Interference on C/N under SFN in a Ship  [in Japanese]

    Ito Nobuhiro , Kamio Takeshi , Haeiwa Kazuhisa , Fujisaka Hisato

    Proceedings of the IEICE General Conference 2014年_基礎・境界, 93, 2014-03-04

  • Analysis of Influence to Antenna Pattern close to Radio Transmitting Station  [in Japanese]

    HAEIWA Kazuhisa , KITAYAMA Kazuhiko , KAMIO Takeshi , Fujisaka Hisato

    In medium wave broadcasting stations, architectures close to transmitting stations affect antenna pattern and load impedance. In this paper, we show that this change of antenna patterns can be analyze …

    ITE Technical Report 38.21(0), 1-4, 2014

    J-STAGE 

  • Development and Evaluation of Complex Noise Suppression Sheet using Conductive Materials and Magnetic materials  [in Japanese]

    YAMAMOTO Kazumi , SATO Yoshiro , NIITA Mari , HOZONO Hideki , HAEIWA Kszuhisa , FUJISAKA Hisato , KAMIO Takeshi

    Attaching noise suppression sheets (NSS) that achieve magnetic loss near an EMI noise source suppresses the noise most efficiently. Despite being an EMI-prevention solution, NSS using eddy-current for …

    IEICE technical report. Electromagnetic compatibility 113(101), 57-62, 2013-06-21

  • Development and Evaluation of Complex Noise Suppression Sheet using Conductive Materials and Magnetic materials  [in Japanese]

    YAMAMOTO Kazumi , SATO Yoshiro , NIITA Mari , HOZONO Hideki , HAEIWA Kazuhisa , FUJISAKA Hisato , KAMIO Takeshi

    電気学会研究会資料. EMC, 電磁環境研究会 2013(19), 57-62, 2013-06-21

    References (5)

  • Representation and Evaluation of a High Accurate Formula for Bit Error Rate in terms of CNR to 64QAM Signal  [in Japanese]

    KITAYAMA Kazuhiko , HAEIWA Kazuhisa , KAMIO Takeshi , FUJISAKA Hisato

    地上ディジタル放送でハイビジョン伝送用として用いられている64QAM信号について,低C/N時においてもC/Nに対する誤り率(BER)の関係を高精度で表すことができる式を導出するとともに評価を行い,C/Nが0から30dBに渡る広範囲において十分な精度が得られることを確認した.

    The transactions of the Institute of Electronics, Information and Communication Engineers. C 96(5), 85-88, 2013-05-01

    References (6)

  • Mitigated Deep Faded Channel with Relay Node Allocation for MUDiv/OFDMA  [in Japanese]

    IDA Yuta , AHN Chang-Jun , KAMIO Takeshi , FUJISAKA Hisato , HAEIWA Kazuhisa

    In recent, to achieve several services with the information product, a high speed and a high quality sys- tern of wireless communications is necessary. To achieve this demand, orthogonal frequency div …

    IEICE technical report. Communication systems 112(486), 205-208, 2013-03-14

  • PSO with restricted searching dimensions  [in Japanese]

    ITAKI Yuuhei , KAMIO Takeshi , FUJISAKA Hisato , HAEIWA Kazuhisa

    In this report. We propose PSO with restricted searching dimensions. This model has been estimated using several of function optimization. We have confirmed that our model works well for problem with …

    IEICE technical report. Nonlinear problems 112(487), 115-119, 2013-03-14

  • Improvement of Limited Action Selection in Reinforcement Learning Based Search Method for Ships' Courses  [in Japanese]

    TANIGAWA Tomohiro , KAMIO Takeshi , MITSUBORI Kunihiko , TANAKA Takahiro , FUJISAKA Hisato , HAEIWA Kazuhisa

    Ship transport is important. Multi ship course problem has been treared in the engineering related to ships. But the optimality of courses and the interaction between maneuvering actions have not been …

    IEICE technical report. Nonlinear problems 112(487), 1-5, 2013-03-14

  • Mitigated Deep Faded Channel with Relay Node Allocation for MUDiv/OFDMA  [in Japanese]

    IDA Yuta , AHN Chang-Jun , KAMIO Takeshi , FUJISAKA Hisato , HAEIWA Kazuhisa

    In recent, to achieve several services with the information product, a high speed and a high quality sys- tern of wireless communications is necessary. To achieve this demand, orthogonal frequency div …

    IEICE technical report. Circuits and systems 112(484), 205-208, 2013-03-14

  • Mitigated Deep Faded Channel with Relay Node Allocation for MUDiv/OFDMA  [in Japanese]

    IDA Yuta , AHN Chang-Jun , KAMIO Takeshi , FUJISAKA Hisato , HAEIWA Kazuhisa

    In recent, to achieve several services with the information product, a high speed and a high quality sys- tern of wireless communications is necessary. To achieve this demand, orthogonal frequency div …

    IEICE technical report. Signal processing 112(485), 205-208, 2013-03-14

  • CI-3-3 Development ofLumped Constant Type LN Optical Modulators Operating at 10GHz Band  [in Japanese]

    Toba Yoshikazu , Haeiwa Kazuhisa , Kamio Takeshi , Fujisaka Hisato

    Proceedings of the IEICE General Conference 2013年_エレクトロニクス(1), "SS-20"-"SS-21", 2013-03-05

  • Influence and Countermeasures of Direct Wave's Side Lobes Overlap for Delay Profile Measurement in Digital Terrestrial TV Broadcasting  [in Japanese]

    HARUNA Tatsuaki , HAEIWA Kazuhisa , KITAYAMA Kazuhiko , KAMIO Takeshi , FUJISAKA Hisato

    地上デジタル放送の遅延プロファイル測定において,遅延波が直接波に近接している場合には,遅延波が直接波の広がり成分(妨害成分)に埋没し,測定が困難になる.そこで,このような場合でも直接波成分をキャンセルすることにより遅延波の電界強度測定を可能とする手法を新たに提案した.

    The Transactions of the Institute of Electronics, Information and Communication Engineers. A 96(3), 125-128, 2013-03-01

    References (6)

  • Development of Lumped Constant Type LN Optical Modulators Operating at 10GHz Band  [in Japanese]

    TOBA Yoshikazu , HAEIWA Kazuhisa , KAMIO Takeshi , FUJISAKA Hisato

    7-10GHz帯で高感度動作する集中定数型LN (LiNbO_3)光変調器(番組伝送用)を実現するためには電極端子容量・リードインダクタンスなどが与える影響の把握が必要となる.このため,電磁界シミュレータにより,LN結晶基板幅が高周波化・高感度化を阻害している主原因であることなどを明らかにしてきたが,今回この結果に基づき,10GHz帯集中定数型LN光変調器(4タイプ)を試作し,性能評価を行った.そ …

    The transactions of the Institute of Electronics, Information and Communication Engineers. C 96(2), 24-30, 2013-02-01

    References (7)

  • Creation and Annihilation of Trajectories in Discrete-Time Piecewise Constant Systems  [in Japanese]

    FUJISAKA Hisato , KAMIO Takeshi , HAEIWA Kazuhisa

    Switched-capacitor sigma-delta modulators possessing quantizers are considered as discrete-time systems with piecewise constant functions. Trajectories of the systems in a phase space contain distinct …

    IEICE technical report. Nonlinear problems 112(301), 43-48, 2012-11-12

    References (3)

  • Studies on Couplings of SET Ring Oscillators for In-Phase Oscillation  [in Japanese]

    Noda HARUKA , NAGATA Keisuke , FUJISAKA Hisato , KAMIO Takeshi , HAEIWA Kazuhisa

    Ring oscillator with single-electron tunneling (SET) transistors has a very large phase noise because electron tunneling behave stochastically. This report shows coupled oscillators can be reduced pha …

    IEICE technical report. Nonlinear problems 112(205), 87-91, 2012-09-20

  • A Primary Study on Classical Particle Modeling of Electron-Wave Interference Systems  [in Japanese]

    NAGATA Keisuke , FUJISAKA Hisato , KAMIO Takeshi , HAEIWA Kazuhisa

    This manuscript reports a procedure and numerical simulation results of classical particle modeling of quantum interference phenomena. By applying Nelson's stochastic quantization to some quantum inte …

    IEICE technical report. Nonlinear problems 112(205), 25-29, 2012-09-20

  • Studies on Couplings of SET Ring Oscillators for In-Phase Oscillation  [in Japanese]

    NODA Haruka , NAGATA Keisuke , FUJISAKA Hisato , KAMIO Takeshi , HAEIWA Kazuhisa

    Ring oscillator with single-electron tunneling (SET) transistors has a very large phase noise because electron tunneling behave stochastically. This report shows coupled oscillators can be reduced pha …

    IEICE technical report. Circuits and systems 112(204), 87-91, 2012-09-20

  • A Primary Study on Classical Particle Modeling of Electron-Wave Interference Systems  [in Japanese]

    NAGATA Keisuke , FUJISAKA Hisato , KAMIO Takeshi , HAEIWA Kazuhisa

    This manuscript reports a procedure and numerical simulation results of classical particle modeling of quantum interference phenomena. By applying Nelson's stochastic quantization to some quantum inte …

    IEICE technical report. Circuits and systems 112(204), 25-29, 2012-09-20

  • Searching Ability of PSO with Non-Convergent Particles  [in Japanese]

    KAMIO Takeshi , ITAKI Yuhei , FUJISAKA Hisato , HAEIWA Kazuhisa

    Since the number of particles affects the searching diversity of PSO, the increment of particles is the simplest way to improve the searching ability of PSO. However, if PSO does not have enough contr …

    IEICE technical report. Nonlinear problems 112(6), 67-72, 2012-04-12

    References (11)

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