| Summary: | 碩士 === 國立臺灣大學 === 電機工程學研究所 === 95 === Recently, the field of digital signal processing is developed quickly, and design of digital filters plays a key role for the development. We propose several minimax design methods based on WLS and Karmarkar’s algorithms for optimally designing FIR Nyquist filters with low group delay and 2-D lowpass filters.
In addition, the circuit of FIR filters must have the multipliers and this makes the computation speed slow. Therefore, we use CORDIC algorithm to discretize filter coefficients, and won’t need any multipliers in circuit implementation.
From the examples presented in each chapter of this thesis, we show the effectiveness of the proposed design techniques.
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