久保田 周治

研究成果

年別の研究成果 1982 1992 1993 1994 1995 2000 2007 2017

• 2082 被引用数
• 18 h-index
• 217 Article
• 36 Conference contribution
• 19 Paper
• 12 Conference article
• 1 その他
  • 1 Review article

年別の研究成果

年別の研究成果

検索結果

• Article

  60GHz Monolithic LTCC Module for Wireless Communication Systems

  Seki, T., Nishikawa, K. & Kubota, S., 2007 9月 1, In: URSI First International Symposium on Radio Systems and Space Plasma. p. 63-66

  研究成果: Article › 査読

  8 被引用数 (Scopus)

• Accretion Disk Spectra of Ultraluminous X-ray Sources in Nearby Spiral Galaxies and Galactic Superluminal Jet

  Ebisawa, K., Zycki, P., Kubota, A., Mizuno, T. & Watarai, K., 2003 11月 10, In: The Astrophysical Journal. 597, p. 780-797

  研究成果: Article › 査読

  81 被引用数 (Scopus)

• A coded vsb-qpsk transmission scheme for digital satellite communications in co-channel interference environments

  Sugiyama, T., Kubota, S., Morikura, M. & Kato, S., 1996, In: IEEE Transactions on Aerospace and Electronic Systems. 32, 3, p. 1174-1181 8 p.

  研究成果: Article › 査読

  • Communication satellites 100%
  • Interference suppression 74%
  • Quadrature phase shift keying 70%
  • Digital communication systems 40%
  • Satellite communication systems 37%
  2 被引用数 (Scopus)

• A Compact Spectrum and Interference-resistant Digital Video Transmission System

  Kubota, S., Morikura, M., Enomoto, K. & Kato, S., 1989 11月 1, In: IEEE International Conference on Global Communications (Globecom'89).

  研究成果: Article › 査読

  3 被引用数 (Scopus)

• Advanced Technologies for Broadband Wireless Access Services

  Kubota, S., 2004 5月 1, In: Default journal.

  研究成果: Article › 査読

• A Feature Extraction Technique for Fading Channels to Achieve Automatic Modulation Recognition that Employs the Nearest Neigbor Rule

  Yoshioka, H., Shirato, Y., Nakatsugawa, M. & Kubota, S., 2001 1月 1, In: URSI AP-RASC01.

  研究成果: Article › 査読

• A Frequency Utilization Efficiency Improvement on Superposed SSMA-QPSK Signal Transmission over High Speed QPSK Signals in Nonlinear Channels

  Sugiyama, T., Morikura, H. KM., Kubota, S. & Kato, S., 1993 5月 1, In: IEICE Transaction on Communications.

  研究成果: Article › 査読

  11 被引用数 (Scopus)

• A half-chip offset QPSK modulation CDMA scheme employing differential detection for advanced wireless LAN systems

  Sugiyama, T., Mizoguchi, M. & Kubota, S., 1996 1月 1, In: IEICE Transactions on Communications. E79-B, 5, p. 693-700 8 p.

  研究成果: Article › 査読

  • Quadrature phase shift keying 100%
  • Local area networks 83%
  • Code division multiple access 80%
  • Modulation 65%
  • Forward error correction 52%

• A High-accuracy Pedestrian Positioning Information System using Pico Cell Techniques

  Shibuya, A., Nakatsugawa, M., Kubota, S. & Ogawa, T., 2000 5月 1, In: IEEE International Conference on Vehicle Technology (VTC'2000-S).

  研究成果: Article › 査読

  4 被引用数 (Scopus)

• A High Efficient and Interference Resistant Half-Chip Offset QPSK-CDMA Scheme for Wireless LAN Systems

  Sugiyama, T., Mizoguchi, M., Kubota, S. & Kato, S., 1995 11月 1, In: IEEE International Conference on Global Communications (Globecom'95). p. 2166-2170

  研究成果: Article › 査読

• A High-Quality and Low Power Consumption Modem LSIC for Personal Handy Phone System

  Mizoguchi, M., Matsumoto, Y., Sakata, T., Kubota, S. & Kato, S., 1994 11月 1, In: International Workshop on Multi-Dimensional Mobile Communications (MDMC'94). p. 39-42

  研究成果: Article › 査読

• A High-speed and High-coding-gain Viterbi Decoder LSI with Low Power Consumption Employing SST Scheme

  Kubota, S., Ohtani, K. & Kato, S., 1986 4月 1, In: IEE Electronics letters.

  研究成果: Article › 査読

• A High Speed QPSK/OQPSK Digital Burst Modem for LSIC Implementation

  Seki, K., Matsumoto, Y., Kobayashi, K., Sakata, T., Morikura, M., Kubota, S. & Kato, S., 1992 12月 1, In: IEEE International Conference on Global Communications (Globecom'92). p. 422-426

  研究成果: Article › 査読

• A Low Power Demodulator LSIC for Personal Communications -High Performance Coherent Detection Demodulator-

  Matsumoto, Y., Kubota, S. & Kato, S., 1994 9月 1, In: IEEE International Symposium on Personal Indoor Mobile Radio Communications (PIMRC'94). p. 476-480

  研究成果: Article › 査読

  1 被引用数 (Scopus)

• An effective data transmission control method for mobile terminals in spot communication systems

  Yoshioka, H., Nakatsugawa, M. & Kubota, S., 2000, In: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. E82-A, 7, p. 1328-1337 10 p.

  研究成果: Article › 査読

  • Data Transmission 100%
  • Communication Systems 85%
  • Data communication systems 61%
  • Communication systems 54%
  • Quality of Service 42%
  5 被引用数 (Scopus)

• An Efficient and Effective Layer Ordering Rule for Spartial Multiplexing Systems

  Jiang, J., Asai, A. & Kubota, K., 2007 9月 1, In: Default journal.

  研究成果: Article › 査読

• A New Burst Coherent Demodulator for Microcellular TDMA/TDD Systems

  Matsumoto, Y., Kubota, S. & Kato, S., 1993 9月 1, In: IEEE International Symposium on Personal Indoor Mobile Radio Communications (PIMRC'93).

  研究成果: Article › 査読

• A New Carrier Recovery Circuit for Land Mobile Satellite Communication

  Kobayashi, K., Sakai, T., Kubota, S., Morikura, M. & Kato, S., 1992 10月, In: IEEE Journal on Selected Areas in Communications. 10, 8, p. 1306-1314 9 p.

  研究成果: Article › 査読

  • Communication satellites 100%
  • Modulation 69%
  • Recovery 61%
  • Networks (circuits) 49%
  • Limiters 36%
  3 被引用数 (Scopus)

• A New Coherent Detection Scheme without Feedback Loop -Open Loop Coherent Detection Scheme-

  Sakata, T., Matsumoto, Y., Kubota, S. & Kato, S., 1993 9月 1, In: IEEE International Symposium on Personal Indoor Mobile Radio Communications (PIMRC'93).

  研究成果: Article › 査読

• A New Fully-Digitalized Pi/4-Shift QPSK Modulator for Personal Communication Terminals

  Sakata, T., Seki, K., Kubota, S. & Kato, S., 1993 10月 1, In: IEEE International Conference on Universal Personal Communications (ICUPC'93). p. 926-930

  研究成果: Article › 査読

  1 被引用数 (Scopus)

• A new user selection measure in Block Diagonalization algorithm for multiuser MIMO systems

  Kudo, R., Takatori, Y., Nishimori, K., Ohta, A., Kubota, S. & Mizoguchi, M., 2009 10月, In: IEICE Transactions on Communications. E92-B, 10, p. 3206-3218 13 p.

  研究成果: Article › 査読

  • MIMO systems 100%
  • Computer simulation 29%
  • Channel state information 27%
  • Vector spaces 27%
  • Physical layer 27%
  6 被引用数 (Scopus)

• An FEC Scheme for TDMA-TDD Communication Systems in Slow Fading Channels

  Suzuki, M., Kubota, S. & Kato, S., 1993 9月 1, In: IEEE International Symposium on Personal Indoor Mobile Radio Communications (PIMRC'93).

  研究成果: Article › 査読

• An FFT interference detection scheme for interference suppression in digital satellite communication systems

  Sugiyama, T., Suzuki, M. & Kubota, S., 1997, In: IEICE Transactions on Communications. E80-B, 9, p. 1352-1362 11 p.

  研究成果: Article › 査読

  • Digital communication systems 100%
  • Satellite communication systems 93%
  • Interference suppression 92%
  • Notch filters 91%
  • Fast Fourier transforms 71%

• An integrated interference suppression scheme with an adaptive equalizer for digital satellite communication systems

  Sugiyama, T., Suzuki, M. & Kubota, S., 1996, In: IEICE Transactions on Communications. E79-B, 2, p. 191-196 6 p.

  研究成果: Article › 査読

  • Digital communication systems 100%
  • Satellite communication systems 93%
  • Interference suppression 92%
  • Equalizers 80%
  • Signal interference 77%
  14 被引用数 (Scopus)

• Another Interpretation of the Power-law type Spectrum of an Ultralunminous Compact X-ray Source in IC 342

  Kubota, A., Done, C. & Makishima, K., 2002 12月 1, In: Monthly Notices of the Royal Astronomical Society. 337, p. L11-L15

  研究成果: Article › 査読

• Antenna Selection Method for Terminal Antennas Employing Orthogonal Polarization and Patterns in Outdooe Multiuser MIMO System

  Honma, H., Kudo, K., Nishimori, N., Takatori, T., Ohta, O. & Kubota, K., 2008 6月 1, In: IEICE Transactions on Communications. E91-B, p. 1752-1759

  研究成果: Article › 査読

  6 被引用数 (Scopus)

• Antenna selection method for terminal antennas employing orthogonal polarizations and patterns in outdoor MultiUser MIMO system

  Honma, N., Kudo, R., Nishimori, K., Takatori, Y., Ohta, A. & Kubota, S., 2008 1月 1, In: IEICE Transactions on Communications. E91-B, 6, p. 1752-1759 8 p.

  研究成果: Article › 査読

  • MIMO systems 100%
  • Polarization 96%
  • Antennas 68%
  • Channel capacity 16%
  • Signal to noise ratio 12%
  6 被引用数 (Scopus)

• Application of Advanced Microelectronics to Large Scale Communication Equipment: Compact & Maintenance Free TDMA Equipment

  Kato, S., Morikura, M., Umehira, M., Enomoto, K. & Kubota, S., 1989 6月 1, In: Default journal.

  研究成果: Article › 査読

• Application of Advanced Microelectronics to Large-Scale Communication Equipment—Compact and Maintenance-Free TDMA Equipment

  Kato, S., Morikura, M., Umehira, M., Enomoto, K. & Kubota, S., 1990 10月, In: IEEE Journal on Selected Areas in Communications. 8, 8, p. 1551-1564 14 p.

  研究成果: Article › 査読

  • LSI circuits 100%
  • Time division multiple access 85%
  • Microelectronics 79%
  • Communication 37%
  • Analog integrated circuits 29%
  6 被引用数 (Scopus)

• Application of Spread Spectrum Multiple Access System to Space Communications

  Masamura, T. & Kubota, S., 1982 10月 1, In: International Symposium on Space Technology and Science (ISTS'82).

  研究成果: Article › 査読

  3 被引用数 (Scopus)

• Approximate Maximum Likelihood Detecters for MIMO Spartial Multiplexing Systems

  Jiang, J., Asai, A. & Kubota, K., 2008 3月 1, In: IEEE Wireless Communications and Networking Conference (WCNC'2008). p. 153-158

  研究成果: Article › 査読

• Approximate Maximum Likelihood Detection Algorithm for Multiple Antenna Systems

  Jiang, J., Jiang;Asai;Kubota, JAK. & Kubota, S., 2008 7月 1, In: IEICE Anntenas and Propagation. p. 105-110

  研究成果: Article › 査読

• A Prediction Eye-Monitoring Method for Carrier Hopping TDMA-TDD Systems

  Nagura, T., Kawazoe, K., Kubota, S. & Kato, S., 1993 9月 1, In: IEEE International Symposium on Personal Indoor Mobile Radio Communications (PIMRC'93).

  研究成果: Article › 査読

• A Priority Control Method for Wireless Multi-hop Access using IEEE802.11 DCF Mechanism

  Kawamura, K., Inoue, Y. & Kubota, S., 2004 9月 1, In: IEEE International Symposium on Personal Indoor Mobile Radio Communications (PIMRC'2004). p. 520-524

  研究成果: Article › 査読

• A Proposal of Universal-coding-rate Viterbi Decoder

  Kubota, S., Kato, S., Ishitani, T. & Nagatani, M., 1987 6月 1, In: IEEE International Conference on Communications (ICC'87).

  研究成果: Article › 査読

  1 被引用数 (Scopus)

• A Reliable and Low Power Consumption Personal Terminal Architecture for Wireless Multimedia Communications

  Kawazoe, K., Sugimura, Y. & Kubota, S., 1995 9月 1, In: IEEE International Symposium on Personal Indoor Mobile Radio Communications (PIMRC'95). p. 1362-1366

  研究成果: Article › 査読

• A Reliable Channel Control Method for Wireless Multimedia Communications

  Sugimura, Y., Kawazoe, K. & Kubota, S., 1995 11月 1, In: IEEE International Conference on Universal Personal Communications (ICUPC'95). p. 476-480

  研究成果: Article › 査読

• A reliable packet transmission method for tdma based wireless multimedia communications

  Kawazoe, K., Sugimura, Y. & Kubota, S., 1996 1月 1, In: IEICE Transactions on Communications. E79-B, 3, p. 251-256 6 p.

  研究成果: Article › 査読

  • Time division multiple access 100%
  • Communication 88%
  • Global system for mobile communications 46%
  • Rayleigh fading 46%
  • Fading channels 40%
  2 被引用数 (Scopus)

• ASCA Observation of Cygnus X-1 in the Soft State; Mass of the Compact Object

  Dotani, T., Inoue, H., Mitsuda, K., Nagase, F., Negoro, H., Ueda, Y., Makishima, K., Kubota, A. & ?2?, ., 1997 8月 20, In: The Astrophysical Journal. 485, p. 87-90

  研究成果: Article › 査読

• ASCA Observation of ultra-Luminous X-ray Source in the Nearby Spiral Galaxy NGC 2403

  Kotoku, J., Mizuno, T., Kubota, A. & Makishima, K., 2000 12月 1, In: Publications of the Astronomical Society of Japan. 52, p. 1081-L1085

  研究成果: Article › 査読

  13 被引用数 (Scopus)

• ASCA observations of the X-ray transient YTE J1550-564 : change of accretion disk parameters

  Kubota, A., Marchall, F., Makishima, K., Dotani, T., Inoue, H. & Negoro, H., 1999 4月 1, In: Astronomische Nachrichten. 320, p. 353

  研究成果: Article › 査読

• A Scarce State Transition Viterbi Decoder VLSI for Bit Error Correction

  Ishitani, T., Tansho, K., Miyahara, N., Kubota, S. & Kato, S., 1987 8月 1, In: IEEE Journal of Solid State Circuits.

  研究成果: Article › 査読

  25 被引用数 (Scopus)

• A Scarce-State-Transition Viterbi-Decoder VLSI for Bit Error Correction

  Ishitani, T., Tansho, K., Miyahara, N., Kubota, S. & Kato, S., 1987 8月, In: IEEE Journal of Solid-State Circuits. 22, 4, p. 575-582 8 p.

  研究成果: Article › 査読

  • Metallizing 100%
  • Error correction 91%
  • Bit error rate 39%
  • Energy dissipation 36%
  • Decoding 36%
  25 被引用数 (Scopus)

• A study of radio zone length of dual-polarized omnidirectional antennas mounted on rooftop for personal handy-phone system

  Ando, A., Kondo, A. & Kubota, S., 2008 1月, In: IEEE Transactions on Vehicular Technology. 57, 1, p. 2-10 9 p.

  研究成果: Article › 査読

  • Omnidirectional antennas 100%
  • Antenna 85%
  • Antennas 45%
  • Mobile antennas 32%
  • Collinear 23%
  28 被引用数 (Scopus)

• A Study of Radio Zone Length of Dual-Polarized Omni-Directional Antennas Mounted on Rooftop for Personal Handy-Phone System

  Ando, A., Kondo, K. & Kubota, S., 2008 1月 1, In: IEEE Transaction on Vehicle Technologies (VT). 57, p. 2-10

  研究成果: Article › 査読

  28 被引用数 (Scopus)

• A Study on an Over-the Air Download Scheme for Software Radios

  Shiba, H., Shono, T., Uehara, K. & Kubota, S., 2000 11月 1, In: International Workshop on Mobile Multimedia Communications.

  研究成果: Article › 査読

• A study on entrance link employing MIMO/unsymmetrical STBC scheme in wireless lan service over high-speed vehicle environments

  Nagasaki, T. & Kubota, S., 2016, In: IEEJ Transactions on Electronics, Information and Systems. 136, 10, p. 1431-1436 6 p.

  研究成果: Article › 査読

  • Space-time block coding (STBC) 100%
  • Local area networks 74%
  • Telecommunication links 69%
  • Telecommunication traffic 52%
  • Communication 37%

• A Suitable Combination of Modulation and FEC Schemes for Satellite Digital Video Communication Networks

  Kubota, S., Morikura, M. & Enomoto, K., 1993 5月 1, In: IEICE Transaction on Communications.

  研究成果: Article › 査読

• A Superposed SSMA-QPSK Signal Transmission Scheme over High Speed QPSK Signals in Nonlinear Channels

  Sugiyama, T., Kazama, H., Morikura, M., Kubota, S. & Kato, S., 1992 12月 1, In: International Symposium on Spread Spectrum Technology (ISSSTA'92). p. 283-286

  研究成果: Article › 査読

• A TDMA Satellite Communication System for ISDN

  Kato, S., Morikura, M., Kubota, S., Kazama, H., Enomoto, K. & Umehira, M., 1992 2月 1, In: IEEE Journal on Selected Areas in Communications.

  研究成果: Article › 査読

  11 被引用数 (Scopus)