渡部 英二

研究成果

年別の研究成果 1985 1985 1987 1988 1993 1994 1998 1999 2002 2005 2013

• 39 Article
• 9 Conference contribution
• 4 Paper
• 3 Conference article

年別の研究成果

年別の研究成果

検索結果

• 2011

  Synthesis of 2-channel IIR paraunitary filter banks by successive extraction of 2-port lattice sections

  Ueda, N., Watanabe, E. & Nishihara, A., 2011 2月, In: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. E94-A, 2, p. 653-660 8 p.

  研究成果: Article › 査読

  • Filter Banks 100%
  • IIR filters 94%
  • Filter banks 82%
  • Synthesis 67%
  • Elliptic filters 55%
• 2010

  Alternating Distribution of Poles of Power-Symmetric IIR Filters

  Ueda, N., Watanabe, E. & Nishihara, A., 2010 12月 1, In: Proceedings of the Second APSIPA Annual Summit and Conference (Student Symposium). p. 51

  研究成果: Article › 査読
• 2008

  A digital filter bank for the reconstruction of uniformly smpled signals from nonuniform samples

  Itami, F., Watanabe, E. & Nishihara, A., 2008 6月 1, In: Technical Report of IEICE. CAS2008-32

  研究成果: Article › 査読
• 2007

  A realization method of cyclic filter banks

  Itami, F., Watanabe, E. & Nishihara, A., 2007 5月 1, In: Electronics and Communications in Japan, Part III: Fundamental Electronic Science (English translation of Denshi Tsushin Gakkai Ronbunshi). 90, 5, p. 9-18 10 p.

  研究成果: Article › 査読

  • Filter banks 100%
  • Discrete Fourier transforms 24%
  • Modulation 17%
  • Convolution 14%
  • Linear equations 8%
  1 被引用数 (Scopus)
• 2006

  Multirate Filter Bank-based Approach for The Conversion of Image Resolution

  Itami, F., Watanabe, E. & Nishihara, A., 2006 11月 1, In: Signal Processing Symposium.

  研究成果: Article › 査読
• 2005

  A change detection method for image sequences based on physical models

  Itami, F., Watanabe, E. & Nishihara, A., 2005 8月, In: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. E88-A, 8, p. 2100-2107 8 p.

  研究成果: Article › 査読

  • Image Sequence 100%
  • Change Detection 97%
  • Physical Model 78%
  • Lighting 52%
  • Light sources 47%

• A New Multirate Processing Scheme for the Conversion of Image Resolution Based on Integer/Fractional Sampling Filter Banks

  Itami, F., Watanabe, E. & Nishihara, A., 2005 6月 1, In: Technical Report of IEICE. CAS2005

  研究成果: Article › 査読
• 2003

  A New Change Detection Method for Image Sequences using Sub-band Filters

  Itami, F., Nishihara, F. IEA. & Watanabe, E., 2003 12月 7, In: 2003 IEEE International Symposium on Intelligent Signal Processing and Communication Systems. p. 620-623

  研究成果: Article › 査読
• 2002

  An implementation of lattice filters using four operands real multiply accumulation

  Negishi, Y., Watanabe, E. & Nishihara, A., 2002 4月, In: Journal of Circuits, Systems and Computers. 11, 2, p. 115-121 7 p.

  研究成果: Article › 査読

  • Networks (circuits) 100%
  • Digital signal processors 56%

• A realization of oversampled cosine modulated filter banks with perfect reconstruction

  Itami, F., Watanabe, E., Nishihara, A. & Yanagisawa, T., 2002 1月 30, In: Electronics and Communications in Japan, Part III: Fundamental Electronic Science (English translation of Denshi Tsushin Gakkai Ronbunshi). 85, 2, p. 32-42 11 p.

  研究成果: Article › 査読

  • Filter banks 100%
  • Transfer functions 61%
  • Sampling 15%
• 1999

  A Complex Multiplier using Redundant Binary Adders for the Four Operands Real Multiply-Accumulation

  Negishi, Y., Watanabe, E., Nishihara, A. & Yanagisawa, T., 1999 12月 1, In: 1999 IEEE International Symposium on Intelligent Signal Processing and Communication Systems. p. 593-596

  研究成果: Article › 査読

• A Complex Multiplier using Redundant Binary Adders with Partial Products Selector

  Negishi, Y., Nishihara, A., Yanagisawa, T. & Watanabe, E., 1999 7月 1, In: Proceedings of 1999 International Technical Conference on Circuits/Systems, Computers and Communications. p. 84-87

  研究成果: Article › 査読

• A Design of Oversampled Cosine Modulated Filter Banks with Perfect Reconstruction

  Itami, F., Watanabe, E., Nishihara, A. & Yanagisawa, T., 1999 12月 1, In: 1999 IEEE International Symposium on Intelligent Signal Processing and Communication Systems. p. 33-36

  研究成果: Article › 査読

• Performance enhancement on digital signal processors with complex arithmetic capability

  Negishi, Y. & Watanabe, E., 1999, In: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. E82-A, 2, p. 238-244 7 p.

  研究成果: Article › 査読

  • Digital Signal Processor 100%
  • Enhancement 61%
  • Digital signal processors 57%
  • Performance 31%
  • Networks (circuits) 28%
  3 被引用数 (Scopus)

• Performance enhancement on digital signal processor with complex arithmetic capability

  Negishi, Y., Watanabe, E., Nishihara, A. & Yanagisawa, T., 1999 2月 1, In: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. E82-A, p. 238-245

  研究成果: Article › 査読

  3 被引用数 (Scopus)
• 1998

  An effective processing on a digital signal processor with complex arithmetic capability

  Negishi, Y., Watanabe, E., Nishihara, A. & Yanagisawa, T., 1998 11月 1, In: The 1998 IEEE Asia-Pacific Conference on Circuits and Systems Proceedings. p. 619-612

  研究成果: Article › 査読
• 1996

  Adaptive line enhancers with discriminated structures

  Watanabe, E., Okamura, Y. & Nishihara, A., 1996 11月, In: Electronics and Communications in Japan, Part III: Fundamental Electronic Science (English translation of Denshi Tsushin Gakkai Ronbunshi). 79, 11, p. 57-68 12 p.

  研究成果: Article › 査読

  • Discriminators 100%
  • Bandwidth 75%
  • Bandpass filters 40%
  • Computer simulation 21%
  1 被引用数 (Scopus)
• 1994

  A synthesis of variable wave digital filters

  E.Watanabe, E. W., M.Ito, M. I., M.Murakoshi, M. M., A.Nishihara, A. N. & Watanabe, E., 1994 1月 1, In: IEICE Transactions on Fundamentals of Electronics,Communications and Computer Sciences. E77-A, p. 263-271

  研究成果: Article › 査読

  9 被引用数 (Scopus)

• Synthesis of separable‐denominator multidimensional digital lattice filters

  Watanabe, E. & Nishihara, A., 1994, In: Electronics and Communications in Japan (Part III: Fundamental Electronic Science). 77, 3, p. 97-105 9 p.

  研究成果: Article › 査読

  • Digital filters 100%
  • Transfer functions 56%
  • Polynomials 48%
  • IIR filters 39%
  • Deterioration 28%
  2 被引用数 (Scopus)

• Synthesis of variable IIR digital filters with complex coefficients

  Murakoshi, N., Nishihara, A. & Watanabe, E., 1994, In: Electronics and Communications in Japan (Part III: Fundamental Electronic Science). 77, 5, p. 46-57 12 p.

  研究成果: Article › 査読

  • IIR filters 100%
  • Digital filters 84%
  • Cutoff frequency 61%
  • Frequency response 48%
  • Networks (circuits) 43%
  2 被引用数 (Scopus)

• Synthesis of variable wave digital filters

  Watanabe, E., Ito, M., Murakoshi, N. & Nishihara, A., 1994 1月 1, In: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. E77-A, 1, p. 263-271 9 p.

  研究成果: Article › 査読

  • Digital Filter 100%
  • Digital filters 83%
  • Synthesis 70%
  • Design 48%
  • Cutoff frequency 45%
  9 被引用数 (Scopus)
• 1993

  A synthesis of complex allpass circuits using the factorization of scattering matrices -Explicit formulae for even-order real complementary filters having Butterworth or Chebyshev responses-

  Nobuo.Murakoshi, N. M., Eiji.Watanabe, E. W., Akinori.Nishihara, A. N. & Watanabe, E., 1993 3月 1, In: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. E76-A, p. 317-325

  研究成果: Article › 査読

• Interpolated digital sinusoidal oscillators

  Watanabe, E., Nakajima, N. & Saito, T., 1993, In: Electronics and Communications in Japan (Part III: Fundamental Electronic Science). 76, 1, p. 78-89 12 p.

  研究成果: Article › 査読

  • Interpolation 100%
  • Sampling 23%
  • Table lookup 20%
  • Digital signal processing 17%
  • Feedback 10%

• Synthesis of complex allpass circuits using the factorization of scattering matrices - explicit formulae for even-order real complementary filters having Butterworth or Chebyshev responses

  Murakoshi, N., Watanabe, E. & Nishihara, A., 1993 3月 1, In: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. E76-A, 3, p. 317-325 9 p.

  研究成果: Article › 査読

  • Chebyshev filters 100%
  • Butterworth filters 95%
  • Scattering Matrix 86%
  • Factorization 67%
  • Chebyshev 66%

• Synthesis of low‐sensitivity second‐order real digital filters using complex two‐port adapters

  Murakoshi, N., Nishihara, A. & Watanabe, E., 1993, In: Electronics and Communications in Japan, Part III: Fundamental Electronic Science (English translation of Denshi Tsushin Gakkai Ronbunshi). 76, 1, p. 31-39 9 p.

  研究成果: Article › 査読

  • Digital filters 100%
  • Networks (circuits) 51%
  • Transfer functions 24%
  • IIR filters 16%
  • Computational complexity 10%
• 1992

  A synthesis of pipelineable wave digital filters by scattering matrix factorization

  Watanabe, E., Mogi, Y. & Nishihara, A., 1992, In: Electronics and Communications in Japan (Part III: Fundamental Electronic Science). 75, 7, p. 1-10 10 p.

  研究成果: Article › 査読

  • Digital filters 100%
  • Factorization 93%
  • Scattering 88%
  • Transfer functions 84%
  • Wave filters 25%
  2 被引用数 (Scopus)

• A synthesis of varible IIR digital filters

  Watanabe, E., 1992 3月 1, In: IEICE Transactions on Fundamentals of Electronics,Communications and Computer Sciences. E75-A, p. 362-368

  研究成果: Article › 査読
• 1991

  A synthesis of a class of complex digital filters based on circuitry transformations

  E.Watanabe, E. W., A.Nishihara, A. N. & Watanabe, E., 1991 11月 1, In: IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences. E74, p. 3622-3624

  研究成果: Article › 査読
• 1990

  A synthesis of low‐sensitivity digital filters using T‐cascade connections. Extraction of wave digital lattice filter sections

  Watanabe, E., Minagawa, K. & Nishihara, A., 1990, In: Electronics and Communications in Japan (Part III: Fundamental Electronic Science). 73, 5, p. 87-95 9 p.

  研究成果: Article › 査読

  • Wave filters 100%
  • Digital filters 78%
  • Scattering 29%
  • Pipelines 24%
  • Digital circuits 23%
  1 被引用数 (Scopus)
• 1989

  Digital sinusoidal oscillators based on lattice structures

  Watanabe, E. & Ihara, T., 1989 4月 1, In: Electronics and Communications in Japan, Part III: Fundamental Electronic Science (English translation of Denshi Tsushin Gakkai Ronbunshi). 72, 4, p. 42-51 10 p.

  研究成果: Article › 査読

  • Frequency bands 100%
  • Networks (circuits) 62%
  • White noise 61%
  • Computer simulation 30%
• 1988

  A synthesis of low-sensitivity digital filters using T-cascade of wave lattice sections

  Watanabe, E., Minagawa, K. & Nishihara, A., 1988 6月 1, In: 1988 IEEE International Symposium on Circuits and Systems Proceedings. p. 535-538

  研究成果: Article › 査読

  1 被引用数 (Scopus)

• A synthesis of low‐sensitivity digital filters using t‐casade connection

  Watanabe, E., Murakoshi, N. & Nishihara, A., 1988 10月, In: Electronics and Communications in Japan (Part I: Communications). 71, 10, p. 34-44 11 p.

  研究成果: Article › 査読

  • Digital filters 100%
  • Pipelines 23%
  • IIR filters 19%
  • FIR filters 17%
  • Networks (circuits) 17%
• 1987

  A synthesis of low-sensitivity digital filters using T-cascade connection

  Watanabe, E., Murakoshi, N., Nishihara, A. & Kishi, G., 1987 8月 1, In: First IASTED International Symposium on Signal Processing and Its Applications. p. 142-147

  研究成果: Article › 査読

• Equivalent transformations and sensitivity of wave digital filters

  Watanabe, E. & Nishihara, A., 1987, In: Electronics and Communications in Japan (Part I: Communications). 70, 12, p. 1-10 10 p.

  研究成果: Article › 査読

  • Digital filters 100%
  • Networks (circuits) 25%

• EXTENDED DESIGN OF DIGITAL LATTICE FILTERS.

  Watanabe, E. & Nishihara, A., 1987 1月 1, In: Electronics and Communications in Japan, Part I: Communications (English translation of Denshi Tsushin Gakkai Ronbunshi). 70, 1, p. 11-20 10 p.

  研究成果: Article › 査読

  • Transfer functions 100%
  • Rational functions 74%
  • Poles 47%
  • Networks (circuits) 30%
• 1985

  Code optimization of digital networks for signal processors

  Sakamoto, H., Watanabe, E. & Nishihara, A., 1985 6月 1, In: 1985 IEEE International Symposium on Circuits and Systems Proceedings. p. 1403-1405

  研究成果: Article › 査読

  1 被引用数 (Scopus)

• Design of wave digital filters with simplified structures

  E.Watanabe, E. W., A.Nishihara, A. N. & Watanabe, E., 1985 7月 1, In: Transactions of Institute of Electronics and Communication Engineers Japan. E68, p. 441-447

  研究成果: Article › 査読

• Digital Lattice Filters With Reduced Number Of Tap-Multipliers

  Watanabe, E. & Nishihara, A., 1985 1月 1, In: Electronics Letters. 21, 4, p. 137-138 2 p.

  研究成果: Article › 査読

  • Polynomials 100%
  • Mirrors 66%
  • Transfer functions 58%
  1 被引用数 (Scopus)

• Digital lattice filters with reduced number of tap-multi pliers

  E.Watanabe, E. W., A.Nishihara, A. N. & Watanabe, E., 1985 2月 1, In: Electronics Letters. 21, p. 137-138

  研究成果: Article › 査読

  1 被引用数 (Scopus)