Development of High-Performance Adaptive Signal Processing Systems Using Gramian-Preserving Frequency Transformation

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This research project has established a new method for design and realization of high-accuracy variable digital filters that simultaneously attain high-accuracy structure and arbitrary control of filter characteristics. This result has been obtained by applying the Gramian-preserving frequency transformation for linear discrete-time systems to the field of digital signal processing. In addition, this research project has applied the proposed high-accuracy variable digital filters to adaptive signal processing and achieved significant performance improvement of the adaptive signal processing systems based on variable digital filters.