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Globally Optimal Variable-Phase Compensator With Robust Stability

Research Project

Project/Area Number 16K06368
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Communication/Network engineering
Research InstitutionToho University

Principal Investigator

ITO Noboru  東邦大学, 理学部, 教授 (00237041)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords線形位相 / 非線形位相 / 位相補償器 / 最適化法 / 可変位相補償器
Outline of Final Research Achievements

A non-linear phase communication channel cannot preserve the original waveform of a transmitted signal and thus causes waveform distortions. To solve this waveform
distortion problem, various design methods are developed for designing both fixed-phase and variable-phase compensators. After deriving the cost functions (both phase-error functions and frequency-response error functions), we minimize the cost functions by employing various mathematical programming methods, including linear programming, second-order cone programming, and non-linear mathematical programming. Cascading the designed phase compensators to the original non-linear phase communication channel produces an overall system with approximately linear phase. This overall system is able to preserve the original signal waveform. Moreover, a novel method is developed for deriving the generalized stability triangle that is applied to the design of the second-order phase compensator with a prescribed stability margin.

Academic Significance and Societal Importance of the Research Achievements

ディジタル信号処理システムとディジタル通信システムは線形位相システムと非線形位相システムに分類できる。信号波形を維持したまま信号処理と信号伝送を行うため、線形位相が要求される。もし位相特性が非線形であれば、信号処理後、又は信号伝送後の信号波形が歪んでしまい、元の信号波形のもつ情報が失われてしまう。このような波形歪問題を解決するため、本研究では、様々な数理計画法を駆使した位相補償器の設計法を開発し、設計した固定位相補償器と可変位相補償器を元の非線形位相システムに接続することにより位相補償を行い、システム全体の位相特性を線形化することで波形歪を回避ができ、高品質波形伝送が可能となる。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (22 results)

All 2019 2018 2017 2016

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (17 results) (of which Int'l Joint Research: 17 results)

  • [Journal Article] Biquadratic Digital Phase-Compensator Design with Stability-Margin Controllability2019

    • Author(s)
      Deng Tian-Bo
    • Journal Title

      Journal of Circuits, Systems and Computers

      Volume: 28 Issue: 04 Pages: 1950068-1950068

    • DOI

      10.1142/s0218126619500683

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Convergent method for designing high-accuracy bi-equiripple variable-delay filters using new delay-error expression2018

    • Author(s)
      Deng Tian-Bo
    • Journal Title

      Multidimensional Systems and Signal Processing

      Volume: 30 Issue: 1 Pages: 343-361

    • DOI

      10.1007/s11045-018-0559-3

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The Lp-Norm-Minimization Design of Stable Variable-Bandwidth Digital Filters2018

    • Author(s)
      Deng Tian-Bo
    • Journal Title

      Journal of Circuits, Systems and Computers

      Volume: 27 Issue: 07 Pages: 1850102-1850102

    • DOI

      10.1142/s0218126618501025

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] High-accuracy variable-phase filter design utilising iterative linear-programming strategy2017

    • Author(s)
      Deng Tian-Bo
    • Journal Title

      International Journal of Electronics

      Volume: 104 Issue: 10 Pages: 1658-1674

    • DOI

      10.1080/00207217.2017.1321143

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Low-Complexity and High-Modularity Structure for Implementing Transient-Free Pascal-Delay Filter2017

    • Author(s)
      Soontornwong Parinya、Deng Tian-Bo、Chivapreecha Sorawat
    • Journal Title

      IEEE Transactions on Signal Processing

      Volume: 65 Issue: 23 Pages: 6233-6243

    • DOI

      10.1109/tsp.2017.2750117

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] Biquadratic phase-compensating system with robust stability2019

    • Author(s)
      T.-B. Deng
    • Organizer
      IMECS 2019
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Generalized linear-fractional programming (LFP) for designing phase-compensation system2019

    • Author(s)
      T.-B. Deng
    • Organizer
      IEEE iEECON 2019
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Simplified phase-equalization system design via linearizing nonlinear design constraints2019

    • Author(s)
      T.-B. Deng
    • Organizer
      IEEE KST 2019
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Novel constraint-linearization methodology for designing high-accuracy phase equalizer2018

    • Author(s)
      T.-B. Deng
    • Organizer
      IEEE TIMES-iCON 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Closed stability-margined regions for the second-order system with robust stability2018

    • Author(s)
      T.-B. Deng
    • Organizer
      IEEE TENCON 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] High-accuracy phase-compensating system design using successively linearized constraints2018

    • Author(s)
      T.-B. Deng
    • Organizer
      IEEE ISCIT 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Reshaping different-forms of error functions for allpass phase-system design2018

    • Author(s)
      T.-B. Deng
    • Organizer
      ITC-CSCC 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Phase-compensator design via checking complex-constrained Qcone feasibility2018

    • Author(s)
      T.-B. Deng
    • Organizer
      IEEE ECTI-NCON 2018
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Further-step optimization towards accuracy-enhanced digital phase system2018

    • Author(s)
      T.-B. Deng
    • Organizer
      2018 International MultiConference of Engineers and Computer Scientists (IMECS 2018)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Two-stage-optimized phase-compensating filter using equivalent error criteria2017

    • Author(s)
      T.-B. Deng
    • Organizer
      The 2017 International Conference on Multimedia and Image Processing (ICMIP 2017)
    • Place of Presentation
      武漢(中国)
    • Year and Date
      2017-03-18
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] New method for deriving shrunk stability-triangle and its variable-case generalization2017

    • Author(s)
      T.-B. Deng
    • Organizer
      The 2017 International Conference on Machine Vision and Information Technology (CMVIT 2017)
    • Place of Presentation
      シンガポール(シンガポール)
    • Year and Date
      2017-02-18
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Enhanced-accuracy phase-equalizer using conic-plus-nonlinear optimizations2017

    • Author(s)
      T.-B. Deng
    • Organizer
      2017 IEEE International Conference on Computer, Information, and Telecommunication Systems (IEEE CITS 2017)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Phase system design using linearized constraint2017

    • Author(s)
      T.-B. Deng
    • Organizer
      2017 International Symposium on Advanced Intelligent Systems (ISIS 2017)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Accelerated convergent method for designing high-accuracy digital phase-system2016

    • Author(s)
      T.-B. Deng
    • Organizer
      The 2016 (5th) Hong Kong International Conference on Engineering and Applied Sciences (HKICEAS 2016)
    • Place of Presentation
      香港(中国)
    • Year and Date
      2016-12-15
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Phase-compensator design using two-step mathematical programming2016

    • Author(s)
      T.-B. Deng
    • Organizer
      The 2016 IEEE Region 10 Conference (TENCON 2016)
    • Place of Presentation
      シンガポール (シンガポール)
    • Year and Date
      2016-11-24
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Further improvement on phase-compensating-system design2016

    • Author(s)
      T.-B. Deng
    • Organizer
      The 2016 (16th) IEEE International Conference on Control, Automation and Systems (IEEE ICCAS 2016)
    • Place of Presentation
      慶州(韓国)
    • Year and Date
      2016-10-18
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Phase-compensator design using convex-programming scheme2016

    • Author(s)
      T.-B. Deng
    • Organizer
      The 2016 (12th) IEEE World Congress on Intelligent Control and Automation (WCICA 2016)
    • Place of Presentation
      桂林(中国)
    • Year and Date
      2016-06-13
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2020-03-30  

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