Presentation | 2000/1/21 Weighted Least-Squares Method for Designing Arbitrarily Variable 1-D FIR Filters Tian-Bo Deng, |
---|---|
PDF Download Page | PDF download Page Link |
Abstract(in Japanese) | (See Japanese page) |
Abstract(in English) | Variable digital filters with variable cutoff frequencies can be designed by frequency trans-formation methods. Such methods are simple, but they are not applicable to the design of variable filters with arbitrarily variable frequency responses. This paper proposes an efficient method for de-signing variable 1-D FIR digital filters with arbitrarily variable magnitude characteristics and specified linear or nonlinear phase responses. First, each coefficient of the variable FIR filter is assumed to be a multi-dimensional (M-D) polynomial of the spectral parameters that specify different variable magnitude characteristics. Then we present a pair of least-squares algorithms for finding the optimal polynomial coefficients by minimizing the weighted squared error between the desired and the actual variable fre-quency response. The first one is for designing 1-D FIR filters with variable magnitude response and linear-phase, and the second one is for designing variable 1-D FIR filters with variable magnitude response and nonlinear-phase. Although the first algorithm can be regarded as a special case of the second one, using the first one in the linear case can simplify the design significantly. |
Keyword(in Japanese) | (See Japanese page) |
Keyword(in English) | variable digital filter / M-D polynomial index mapping / spectral parameter |
Paper # | DSP99-185,SAT99-140,RCS99-190 |
Date of Issue |
Conference Information | |
Committee | RCS |
---|---|
Conference Date | 2000/1/21(1days) |
Place (in Japanese) | (See Japanese page) |
Place (in English) | |
Topics (in Japanese) | (See Japanese page) |
Topics (in English) | |
Chair | |
Vice Chair | |
Secretary | |
Assistant |
Paper Information | |
Registration To | Radio Communication Systems (RCS) |
---|---|
Language | JPN |
Title (in Japanese) | (See Japanese page) |
Sub Title (in Japanese) | (See Japanese page) |
Title (in English) | Weighted Least-Squares Method for Designing Arbitrarily Variable 1-D FIR Filters |
Sub Title (in English) | |
Keyword(1) | variable digital filter |
Keyword(2) | M-D polynomial index mapping |
Keyword(3) | spectral parameter |
1st Author's Name | Tian-Bo Deng |
1st Author's Affiliation | Department of Information Science, Faculty of Science, Toho University() |
Date | 2000/1/21 |
Paper # | DSP99-185,SAT99-140,RCS99-190 |
Volume (vol) | vol.99 |
Number (no) | 569 |
Page | pp.pp.- |
#Pages | 8 |
Date of Issue |