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A Novel DCGA Optimization Technique for Guaranteed BIBO-Stable Frequency-Response Masking Digital Filters Incorporating Bilinear Lossless Discrete-integrator IIR Interpolation Sub-Filters
| Content Provider | Semantic Scholar |
|---|---|
| Author | Bokhari, Syed Nowrouzian, Behrouz |
| Copyright Year | 2011 |
| Abstract | This work is concerned with the development of a novel diversity-controlled (DC) genetic algorithm (GA) for the design and rapid optimization of frequency-response masking (FRM) digital filters incorporating bilinear lossless discrete-integrator (LDI) IIR interpolation sub-filters. The selection of FRM approach is inspired by the fact it lends itself to the design of practical sharp-transition band digital filters in terms of gradual-transition band FIR interpolation sub-filters. The proposed DCGA optimization is carried out over the canonical-signed-digit (CSD) multiplier coefficient space, resulting in FRM digital filters which are capable of direct implementation in digital hardware. A novel CSD look-up table (LUT) scheme is developed so that in every stage of DCGA optimization, the IIR interpolation sub-filters constituent in the intermediate and final FRM digital filters are guaranteed to be automatically BIBO stable. The proposed DCGA optimization permits simultaneous optimization of the magnitude-frequency as well of the group-delay frequency response of the desired FRM digital filters. An example is given to illustrate the application of the resulting DCGA optimization to the design of a lowpass FRM digital filter incorporating a fifth-order bilinear-LDI interpolation subfilter. |
| Starting Page | 309 |
| Ending Page | 325 |
| Page Count | 17 |
| File Format | PDF HTM / HTML |
| DOI | 10.4018/978-1-60960-018-1.ch014 |
| Alternate Webpage(s) | http://www.igi-global.com/viewtitlesample.aspx?id=48901&ptid=41883&t=a+novel+dcga+optimization+technique+for+guaranteed+bibo-stable+frequency-response+masking+digital+filters+incorporating+bilinear+lossless+discrete-integrator+iir+interpolation+sub-filters |
| Alternate Webpage(s) | https://www.igi-global.com/viewtitlesample.aspx?id=48901&ptid=41883&t=a+novel+dcga+optimization+technique+for+guaranteed+bibo-stable+frequency-response+masking+digital+filters+incorporating+bilinear+lossless+discrete-integrator+iir+interpolation+sub-filters |
| Alternate Webpage(s) | https://doi.org/10.4018/978-1-60960-018-1.ch014 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
